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Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
[deliverable/linux.git] / fs / nfs / nfs4xdr.c
1 /*
2 * fs/nfs/nfs4xdr.c
3 *
4 * Client-side XDR for NFSv4.
5 *
6 * Copyright (c) 2002 The Regents of the University of Michigan.
7 * All rights reserved.
8 *
9 * Kendrick Smith <kmsmith@umich.edu>
10 * Andy Adamson <andros@umich.edu>
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 *
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
26 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
27 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
28 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
32 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
33 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
34 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
35 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 */
37
38 #include <linux/param.h>
39 #include <linux/time.h>
40 #include <linux/mm.h>
41 #include <linux/slab.h>
42 #include <linux/utsname.h>
43 #include <linux/errno.h>
44 #include <linux/string.h>
45 #include <linux/in.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>
54 #include "nfs4_fs.h"
55
56 #define NFSDBG_FACILITY NFSDBG_XDR
57
58 /* Mapping from NFS error code to "errno" error code. */
59 #define errno_NFSERR_IO EIO
60
61 static int nfs4_stat_to_errno(int);
62
63 /* NFSv4 COMPOUND tags are only wanted for debugging purposes */
64 #ifdef DEBUG
65 #define NFS4_MAXTAGLEN 20
66 #else
67 #define NFS4_MAXTAGLEN 0
68 #endif
69
70 /* lock,open owner id:
71 * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2)
72 */
73 #define owner_id_maxsz (1 + 1)
74 #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
75 #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2))
76 #define op_encode_hdr_maxsz (1)
77 #define op_decode_hdr_maxsz (2)
78 #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \
79 (NFS4_FHSIZE >> 2))
80 #define decode_putfh_maxsz (op_decode_hdr_maxsz)
81 #define encode_putrootfh_maxsz (op_encode_hdr_maxsz)
82 #define decode_putrootfh_maxsz (op_decode_hdr_maxsz)
83 #define encode_getfh_maxsz (op_encode_hdr_maxsz)
84 #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \
85 ((3+NFS4_FHSIZE) >> 2))
86 #define nfs4_fattr_bitmap_maxsz 3
87 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
88 #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2))
89 #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2))
90 /* This is based on getfattr, which uses the most attributes: */
91 #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \
92 3 + 3 + 3 + 2 * nfs4_name_maxsz))
93 #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \
94 nfs4_fattr_value_maxsz)
95 #define decode_getattr_maxsz (op_decode_hdr_maxsz + nfs4_fattr_maxsz)
96 #define encode_savefh_maxsz (op_encode_hdr_maxsz)
97 #define decode_savefh_maxsz (op_decode_hdr_maxsz)
98 #define encode_restorefh_maxsz (op_encode_hdr_maxsz)
99 #define decode_restorefh_maxsz (op_decode_hdr_maxsz)
100 #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2)
101 #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11)
102 #define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
103 #define decode_renew_maxsz (op_decode_hdr_maxsz)
104 #define encode_setclientid_maxsz \
105 (op_encode_hdr_maxsz + \
106 4 /*server->ip_addr*/ + \
107 1 /*Netid*/ + \
108 6 /*uaddr*/ + \
109 6 + (NFS4_VERIFIER_SIZE >> 2))
110 #define decode_setclientid_maxsz \
111 (op_decode_hdr_maxsz + \
112 2 + \
113 1024) /* large value for CLID_INUSE */
114 #define encode_setclientid_confirm_maxsz \
115 (op_encode_hdr_maxsz + \
116 3 + (NFS4_VERIFIER_SIZE >> 2))
117 #define decode_setclientid_confirm_maxsz \
118 (op_decode_hdr_maxsz)
119 #define encode_lookup_maxsz (op_encode_hdr_maxsz + \
120 1 + ((3 + NFS4_FHSIZE) >> 2))
121 #define encode_remove_maxsz (op_encode_hdr_maxsz + \
122 nfs4_name_maxsz)
123 #define encode_rename_maxsz (op_encode_hdr_maxsz + \
124 2 * nfs4_name_maxsz)
125 #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5)
126 #define encode_link_maxsz (op_encode_hdr_maxsz + \
127 nfs4_name_maxsz)
128 #define decode_link_maxsz (op_decode_hdr_maxsz + 5)
129 #define encode_symlink_maxsz (op_encode_hdr_maxsz + \
130 1 + nfs4_name_maxsz + \
131 1 + \
132 nfs4_fattr_maxsz)
133 #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8)
134 #define encode_create_maxsz (op_encode_hdr_maxsz + \
135 2 + nfs4_name_maxsz + \
136 nfs4_fattr_maxsz)
137 #define decode_create_maxsz (op_decode_hdr_maxsz + 8)
138 #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4)
139 #define decode_delegreturn_maxsz (op_decode_hdr_maxsz)
140 #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */
141 #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */
142 #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \
143 encode_putfh_maxsz + \
144 op_encode_hdr_maxsz + 7)
145 #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \
146 decode_putfh_maxsz + \
147 op_decode_hdr_maxsz + 2)
148 #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \
149 encode_putfh_maxsz + \
150 op_encode_hdr_maxsz)
151 #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \
152 decode_putfh_maxsz + \
153 op_decode_hdr_maxsz)
154 #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \
155 encode_putfh_maxsz + \
156 op_encode_hdr_maxsz + 9)
157 #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \
158 decode_putfh_maxsz + \
159 op_decode_hdr_maxsz + 2)
160 #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \
161 encode_putfh_maxsz + \
162 op_encode_hdr_maxsz + 8 + \
163 encode_getattr_maxsz)
164 #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \
165 decode_putfh_maxsz + \
166 op_decode_hdr_maxsz + 4 + \
167 decode_getattr_maxsz)
168 #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \
169 encode_putfh_maxsz + \
170 op_encode_hdr_maxsz + 3 + \
171 encode_getattr_maxsz)
172 #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \
173 decode_putfh_maxsz + \
174 op_decode_hdr_maxsz + 2 + \
175 decode_getattr_maxsz)
176 #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \
177 encode_putfh_maxsz + \
178 op_encode_hdr_maxsz + \
179 13 + 3 + 2 + 64 + \
180 encode_getattr_maxsz + \
181 encode_getfh_maxsz)
182 #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \
183 decode_putfh_maxsz + \
184 op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \
185 decode_getattr_maxsz + \
186 decode_getfh_maxsz)
187 #define NFS4_enc_open_confirm_sz \
188 (compound_encode_hdr_maxsz + \
189 encode_putfh_maxsz + \
190 op_encode_hdr_maxsz + 5)
191 #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \
192 decode_putfh_maxsz + \
193 op_decode_hdr_maxsz + 4)
194 #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \
195 encode_putfh_maxsz + \
196 op_encode_hdr_maxsz + \
197 11)
198 #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \
199 decode_putfh_maxsz + \
200 op_decode_hdr_maxsz + \
201 4 + 5 + 2 + 3)
202 #define NFS4_enc_open_downgrade_sz \
203 (compound_encode_hdr_maxsz + \
204 encode_putfh_maxsz + \
205 op_encode_hdr_maxsz + 7 + \
206 encode_getattr_maxsz)
207 #define NFS4_dec_open_downgrade_sz \
208 (compound_decode_hdr_maxsz + \
209 decode_putfh_maxsz + \
210 op_decode_hdr_maxsz + 4 + \
211 decode_getattr_maxsz)
212 #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \
213 encode_putfh_maxsz + \
214 op_encode_hdr_maxsz + 5 + \
215 encode_getattr_maxsz)
216 #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \
217 decode_putfh_maxsz + \
218 op_decode_hdr_maxsz + 4 + \
219 decode_getattr_maxsz)
220 #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \
221 encode_putfh_maxsz + \
222 op_encode_hdr_maxsz + 4 + \
223 nfs4_fattr_maxsz + \
224 encode_getattr_maxsz)
225 #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \
226 decode_putfh_maxsz + \
227 op_decode_hdr_maxsz + 3)
228 #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \
229 encode_putfh_maxsz + \
230 encode_fsinfo_maxsz)
231 #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \
232 decode_putfh_maxsz + \
233 decode_fsinfo_maxsz)
234 #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \
235 encode_renew_maxsz)
236 #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \
237 decode_renew_maxsz)
238 #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \
239 encode_setclientid_maxsz)
240 #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \
241 decode_setclientid_maxsz)
242 #define NFS4_enc_setclientid_confirm_sz \
243 (compound_encode_hdr_maxsz + \
244 encode_setclientid_confirm_maxsz + \
245 encode_putrootfh_maxsz + \
246 encode_fsinfo_maxsz)
247 #define NFS4_dec_setclientid_confirm_sz \
248 (compound_decode_hdr_maxsz + \
249 decode_setclientid_confirm_maxsz + \
250 decode_putrootfh_maxsz + \
251 decode_fsinfo_maxsz)
252 #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \
253 encode_putfh_maxsz + \
254 encode_getattr_maxsz + \
255 op_encode_hdr_maxsz + \
256 1 + 1 + 2 + 2 + \
257 1 + 4 + 1 + 2 + \
258 owner_id_maxsz)
259 #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \
260 decode_putfh_maxsz + \
261 decode_getattr_maxsz + \
262 op_decode_hdr_maxsz + \
263 2 + 2 + 1 + 2 + \
264 owner_id_maxsz)
265 #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \
266 encode_putfh_maxsz + \
267 encode_getattr_maxsz + \
268 op_encode_hdr_maxsz + \
269 1 + 2 + 2 + 2 + \
270 owner_id_maxsz)
271 #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz)
272 #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \
273 encode_putfh_maxsz + \
274 encode_getattr_maxsz + \
275 op_encode_hdr_maxsz + \
276 1 + 1 + 4 + 2 + 2)
277 #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \
278 decode_putfh_maxsz + \
279 decode_getattr_maxsz + \
280 op_decode_hdr_maxsz + 4)
281 #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \
282 encode_putfh_maxsz + \
283 op_encode_hdr_maxsz + 1)
284 #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \
285 decode_putfh_maxsz + \
286 op_decode_hdr_maxsz + 2)
287 #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \
288 encode_putfh_maxsz + \
289 encode_getattr_maxsz)
290 #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \
291 decode_putfh_maxsz + \
292 decode_getattr_maxsz)
293 #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \
294 encode_putfh_maxsz + \
295 encode_lookup_maxsz + \
296 encode_getattr_maxsz + \
297 encode_getfh_maxsz)
298 #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \
299 decode_putfh_maxsz + \
300 op_decode_hdr_maxsz + \
301 decode_getattr_maxsz + \
302 decode_getfh_maxsz)
303 #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \
304 encode_putrootfh_maxsz + \
305 encode_getattr_maxsz + \
306 encode_getfh_maxsz)
307 #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \
308 decode_putrootfh_maxsz + \
309 decode_getattr_maxsz + \
310 decode_getfh_maxsz)
311 #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \
312 encode_putfh_maxsz + \
313 encode_remove_maxsz + \
314 encode_getattr_maxsz)
315 #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \
316 decode_putfh_maxsz + \
317 op_decode_hdr_maxsz + 5 + \
318 decode_getattr_maxsz)
319 #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \
320 encode_putfh_maxsz + \
321 encode_savefh_maxsz + \
322 encode_putfh_maxsz + \
323 encode_rename_maxsz + \
324 encode_getattr_maxsz + \
325 encode_restorefh_maxsz + \
326 encode_getattr_maxsz)
327 #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \
328 decode_putfh_maxsz + \
329 decode_savefh_maxsz + \
330 decode_putfh_maxsz + \
331 decode_rename_maxsz + \
332 decode_getattr_maxsz + \
333 decode_restorefh_maxsz + \
334 decode_getattr_maxsz)
335 #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \
336 encode_putfh_maxsz + \
337 encode_savefh_maxsz + \
338 encode_putfh_maxsz + \
339 encode_link_maxsz + \
340 decode_getattr_maxsz + \
341 encode_restorefh_maxsz + \
342 decode_getattr_maxsz)
343 #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \
344 decode_putfh_maxsz + \
345 decode_savefh_maxsz + \
346 decode_putfh_maxsz + \
347 decode_link_maxsz + \
348 decode_getattr_maxsz + \
349 decode_restorefh_maxsz + \
350 decode_getattr_maxsz)
351 #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \
352 encode_putfh_maxsz + \
353 encode_symlink_maxsz + \
354 encode_getattr_maxsz + \
355 encode_getfh_maxsz)
356 #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \
357 decode_putfh_maxsz + \
358 decode_symlink_maxsz + \
359 decode_getattr_maxsz + \
360 decode_getfh_maxsz)
361 #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \
362 encode_putfh_maxsz + \
363 encode_savefh_maxsz + \
364 encode_create_maxsz + \
365 encode_getfh_maxsz + \
366 encode_getattr_maxsz + \
367 encode_restorefh_maxsz + \
368 encode_getattr_maxsz)
369 #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \
370 decode_putfh_maxsz + \
371 decode_savefh_maxsz + \
372 decode_create_maxsz + \
373 decode_getfh_maxsz + \
374 decode_getattr_maxsz + \
375 decode_restorefh_maxsz + \
376 decode_getattr_maxsz)
377 #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \
378 encode_putfh_maxsz + \
379 encode_getattr_maxsz)
380 #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \
381 decode_putfh_maxsz + \
382 decode_getattr_maxsz)
383 #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \
384 encode_putfh_maxsz + \
385 encode_getattr_maxsz)
386 #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \
387 decode_putfh_maxsz + \
388 op_decode_hdr_maxsz + 12)
389 #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \
390 encode_getattr_maxsz)
391 #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \
392 decode_getattr_maxsz)
393 #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \
394 encode_putfh_maxsz + \
395 encode_delegreturn_maxsz + \
396 encode_getattr_maxsz)
397 #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \
398 decode_delegreturn_maxsz + \
399 decode_getattr_maxsz)
400 #define NFS4_enc_getacl_sz (compound_encode_hdr_maxsz + \
401 encode_putfh_maxsz + \
402 encode_getattr_maxsz)
403 #define NFS4_dec_getacl_sz (compound_decode_hdr_maxsz + \
404 decode_putfh_maxsz + \
405 op_decode_hdr_maxsz + \
406 nfs4_fattr_bitmap_maxsz + 1)
407 #define NFS4_enc_setacl_sz (compound_encode_hdr_maxsz + \
408 encode_putfh_maxsz + \
409 op_encode_hdr_maxsz + 4 + \
410 nfs4_fattr_bitmap_maxsz + 1)
411 #define NFS4_dec_setacl_sz (compound_decode_hdr_maxsz + \
412 decode_putfh_maxsz + \
413 op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz)
414 #define NFS4_enc_fs_locations_sz \
415 (compound_encode_hdr_maxsz + \
416 encode_putfh_maxsz + \
417 encode_getattr_maxsz)
418 #define NFS4_dec_fs_locations_sz \
419 (compound_decode_hdr_maxsz + \
420 decode_putfh_maxsz + \
421 op_decode_hdr_maxsz + \
422 nfs4_fattr_bitmap_maxsz)
423
424 static struct {
425 unsigned int mode;
426 unsigned int nfs2type;
427 } nfs_type2fmt[] = {
428 { 0, NFNON },
429 { S_IFREG, NFREG },
430 { S_IFDIR, NFDIR },
431 { S_IFBLK, NFBLK },
432 { S_IFCHR, NFCHR },
433 { S_IFLNK, NFLNK },
434 { S_IFSOCK, NFSOCK },
435 { S_IFIFO, NFFIFO },
436 { 0, NFNON },
437 { 0, NFNON },
438 };
439
440 struct compound_hdr {
441 int32_t status;
442 uint32_t nops;
443 uint32_t taglen;
444 char * tag;
445 };
446
447 /*
448 * START OF "GENERIC" ENCODE ROUTINES.
449 * These may look a little ugly since they are imported from a "generic"
450 * set of XDR encode/decode routines which are intended to be shared by
451 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
452 *
453 * If the pain of reading these is too great, it should be a straightforward
454 * task to translate them into Linux-specific versions which are more
455 * consistent with the style used in NFSv2/v3...
456 */
457 #define WRITE32(n) *p++ = htonl(n)
458 #define WRITE64(n) do { \
459 *p++ = htonl((uint32_t)((n) >> 32)); \
460 *p++ = htonl((uint32_t)(n)); \
461 } while (0)
462 #define WRITEMEM(ptr,nbytes) do { \
463 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
464 } while (0)
465
466 #define RESERVE_SPACE(nbytes) do { \
467 p = xdr_reserve_space(xdr, nbytes); \
468 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
469 BUG_ON(!p); \
470 } while (0)
471
472 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
473 {
474 uint32_t *p;
475
476 p = xdr_reserve_space(xdr, 4 + len);
477 BUG_ON(p == NULL);
478 xdr_encode_opaque(p, str, len);
479 }
480
481 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
482 {
483 uint32_t *p;
484
485 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
486 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
487 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
488 WRITE32(hdr->taglen);
489 WRITEMEM(hdr->tag, hdr->taglen);
490 WRITE32(NFS4_MINOR_VERSION);
491 WRITE32(hdr->nops);
492 return 0;
493 }
494
495 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
496 {
497 uint32_t *p;
498
499 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
500 BUG_ON(p == NULL);
501 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
502 }
503
504 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
505 {
506 char owner_name[IDMAP_NAMESZ];
507 char owner_group[IDMAP_NAMESZ];
508 int owner_namelen = 0;
509 int owner_grouplen = 0;
510 uint32_t *p;
511 uint32_t *q;
512 int len;
513 uint32_t bmval0 = 0;
514 uint32_t bmval1 = 0;
515 int status;
516
517 /*
518 * We reserve enough space to write the entire attribute buffer at once.
519 * In the worst-case, this would be
520 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
521 * = 36 bytes, plus any contribution from variable-length fields
522 * such as owner/group.
523 */
524 len = 16;
525
526 /* Sigh */
527 if (iap->ia_valid & ATTR_SIZE)
528 len += 8;
529 if (iap->ia_valid & ATTR_MODE)
530 len += 4;
531 if (iap->ia_valid & ATTR_UID) {
532 owner_namelen = nfs_map_uid_to_name(server->nfs_client, iap->ia_uid, owner_name);
533 if (owner_namelen < 0) {
534 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
535 iap->ia_uid);
536 /* XXX */
537 strcpy(owner_name, "nobody");
538 owner_namelen = sizeof("nobody") - 1;
539 /* goto out; */
540 }
541 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
542 }
543 if (iap->ia_valid & ATTR_GID) {
544 owner_grouplen = nfs_map_gid_to_group(server->nfs_client, iap->ia_gid, owner_group);
545 if (owner_grouplen < 0) {
546 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
547 iap->ia_gid);
548 strcpy(owner_group, "nobody");
549 owner_grouplen = sizeof("nobody") - 1;
550 /* goto out; */
551 }
552 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
553 }
554 if (iap->ia_valid & ATTR_ATIME_SET)
555 len += 16;
556 else if (iap->ia_valid & ATTR_ATIME)
557 len += 4;
558 if (iap->ia_valid & ATTR_MTIME_SET)
559 len += 16;
560 else if (iap->ia_valid & ATTR_MTIME)
561 len += 4;
562 RESERVE_SPACE(len);
563
564 /*
565 * We write the bitmap length now, but leave the bitmap and the attribute
566 * buffer length to be backfilled at the end of this routine.
567 */
568 WRITE32(2);
569 q = p;
570 p += 3;
571
572 if (iap->ia_valid & ATTR_SIZE) {
573 bmval0 |= FATTR4_WORD0_SIZE;
574 WRITE64(iap->ia_size);
575 }
576 if (iap->ia_valid & ATTR_MODE) {
577 bmval1 |= FATTR4_WORD1_MODE;
578 WRITE32(iap->ia_mode & S_IALLUGO);
579 }
580 if (iap->ia_valid & ATTR_UID) {
581 bmval1 |= FATTR4_WORD1_OWNER;
582 WRITE32(owner_namelen);
583 WRITEMEM(owner_name, owner_namelen);
584 }
585 if (iap->ia_valid & ATTR_GID) {
586 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
587 WRITE32(owner_grouplen);
588 WRITEMEM(owner_group, owner_grouplen);
589 }
590 if (iap->ia_valid & ATTR_ATIME_SET) {
591 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
592 WRITE32(NFS4_SET_TO_CLIENT_TIME);
593 WRITE32(0);
594 WRITE32(iap->ia_mtime.tv_sec);
595 WRITE32(iap->ia_mtime.tv_nsec);
596 }
597 else if (iap->ia_valid & ATTR_ATIME) {
598 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
599 WRITE32(NFS4_SET_TO_SERVER_TIME);
600 }
601 if (iap->ia_valid & ATTR_MTIME_SET) {
602 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
603 WRITE32(NFS4_SET_TO_CLIENT_TIME);
604 WRITE32(0);
605 WRITE32(iap->ia_mtime.tv_sec);
606 WRITE32(iap->ia_mtime.tv_nsec);
607 }
608 else if (iap->ia_valid & ATTR_MTIME) {
609 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
610 WRITE32(NFS4_SET_TO_SERVER_TIME);
611 }
612
613 /*
614 * Now we backfill the bitmap and the attribute buffer length.
615 */
616 if (len != ((char *)p - (char *)q) + 4) {
617 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
618 len, ((char *)p - (char *)q) + 4);
619 BUG();
620 }
621 len = (char *)p - (char *)q - 12;
622 *q++ = htonl(bmval0);
623 *q++ = htonl(bmval1);
624 *q++ = htonl(len);
625
626 status = 0;
627 /* out: */
628 return status;
629 }
630
631 static int encode_access(struct xdr_stream *xdr, u32 access)
632 {
633 uint32_t *p;
634
635 RESERVE_SPACE(8);
636 WRITE32(OP_ACCESS);
637 WRITE32(access);
638
639 return 0;
640 }
641
642 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
643 {
644 uint32_t *p;
645
646 RESERVE_SPACE(8+sizeof(arg->stateid->data));
647 WRITE32(OP_CLOSE);
648 WRITE32(arg->seqid->sequence->counter);
649 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
650
651 return 0;
652 }
653
654 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
655 {
656 uint32_t *p;
657
658 RESERVE_SPACE(16);
659 WRITE32(OP_COMMIT);
660 WRITE64(args->offset);
661 WRITE32(args->count);
662
663 return 0;
664 }
665
666 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
667 {
668 uint32_t *p;
669
670 RESERVE_SPACE(8);
671 WRITE32(OP_CREATE);
672 WRITE32(create->ftype);
673
674 switch (create->ftype) {
675 case NF4LNK:
676 RESERVE_SPACE(4);
677 WRITE32(create->u.symlink.len);
678 xdr_write_pages(xdr, create->u.symlink.pages, 0, create->u.symlink.len);
679 break;
680
681 case NF4BLK: case NF4CHR:
682 RESERVE_SPACE(8);
683 WRITE32(create->u.device.specdata1);
684 WRITE32(create->u.device.specdata2);
685 break;
686
687 default:
688 break;
689 }
690
691 RESERVE_SPACE(4 + create->name->len);
692 WRITE32(create->name->len);
693 WRITEMEM(create->name->name, create->name->len);
694
695 return encode_attrs(xdr, create->attrs, create->server);
696 }
697
698 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
699 {
700 uint32_t *p;
701
702 RESERVE_SPACE(12);
703 WRITE32(OP_GETATTR);
704 WRITE32(1);
705 WRITE32(bitmap);
706 return 0;
707 }
708
709 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
710 {
711 uint32_t *p;
712
713 RESERVE_SPACE(16);
714 WRITE32(OP_GETATTR);
715 WRITE32(2);
716 WRITE32(bm0);
717 WRITE32(bm1);
718 return 0;
719 }
720
721 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
722 {
723 return encode_getattr_two(xdr,
724 bitmask[0] & nfs4_fattr_bitmap[0],
725 bitmask[1] & nfs4_fattr_bitmap[1]);
726 }
727
728 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
729 {
730 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
731 bitmask[1] & nfs4_fsinfo_bitmap[1]);
732 }
733
734 static int encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask)
735 {
736 return encode_getattr_two(xdr,
737 bitmask[0] & nfs4_fs_locations_bitmap[0],
738 bitmask[1] & nfs4_fs_locations_bitmap[1]);
739 }
740
741 static int encode_getfh(struct xdr_stream *xdr)
742 {
743 uint32_t *p;
744
745 RESERVE_SPACE(4);
746 WRITE32(OP_GETFH);
747
748 return 0;
749 }
750
751 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
752 {
753 uint32_t *p;
754
755 RESERVE_SPACE(8 + name->len);
756 WRITE32(OP_LINK);
757 WRITE32(name->len);
758 WRITEMEM(name->name, name->len);
759
760 return 0;
761 }
762
763 static inline int nfs4_lock_type(struct file_lock *fl, int block)
764 {
765 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
766 return block ? NFS4_READW_LT : NFS4_READ_LT;
767 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
768 }
769
770 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
771 {
772 if (fl->fl_end == OFFSET_MAX)
773 return ~(uint64_t)0;
774 return fl->fl_end - fl->fl_start + 1;
775 }
776
777 /*
778 * opcode,type,reclaim,offset,length,new_lock_owner = 32
779 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
780 */
781 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
782 {
783 uint32_t *p;
784
785 RESERVE_SPACE(32);
786 WRITE32(OP_LOCK);
787 WRITE32(nfs4_lock_type(args->fl, args->block));
788 WRITE32(args->reclaim);
789 WRITE64(args->fl->fl_start);
790 WRITE64(nfs4_lock_length(args->fl));
791 WRITE32(args->new_lock_owner);
792 if (args->new_lock_owner){
793 RESERVE_SPACE(40);
794 WRITE32(args->open_seqid->sequence->counter);
795 WRITEMEM(args->open_stateid->data, sizeof(args->open_stateid->data));
796 WRITE32(args->lock_seqid->sequence->counter);
797 WRITE64(args->lock_owner.clientid);
798 WRITE32(4);
799 WRITE32(args->lock_owner.id);
800 }
801 else {
802 RESERVE_SPACE(20);
803 WRITEMEM(args->lock_stateid->data, sizeof(args->lock_stateid->data));
804 WRITE32(args->lock_seqid->sequence->counter);
805 }
806
807 return 0;
808 }
809
810 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
811 {
812 uint32_t *p;
813
814 RESERVE_SPACE(40);
815 WRITE32(OP_LOCKT);
816 WRITE32(nfs4_lock_type(args->fl, 0));
817 WRITE64(args->fl->fl_start);
818 WRITE64(nfs4_lock_length(args->fl));
819 WRITE64(args->lock_owner.clientid);
820 WRITE32(4);
821 WRITE32(args->lock_owner.id);
822
823 return 0;
824 }
825
826 static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
827 {
828 uint32_t *p;
829
830 RESERVE_SPACE(44);
831 WRITE32(OP_LOCKU);
832 WRITE32(nfs4_lock_type(args->fl, 0));
833 WRITE32(args->seqid->sequence->counter);
834 WRITEMEM(args->stateid->data, sizeof(args->stateid->data));
835 WRITE64(args->fl->fl_start);
836 WRITE64(nfs4_lock_length(args->fl));
837
838 return 0;
839 }
840
841 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
842 {
843 int len = name->len;
844 uint32_t *p;
845
846 RESERVE_SPACE(8 + len);
847 WRITE32(OP_LOOKUP);
848 WRITE32(len);
849 WRITEMEM(name->name, len);
850
851 return 0;
852 }
853
854 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
855 {
856 uint32_t *p;
857
858 RESERVE_SPACE(8);
859 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
860 case FMODE_READ:
861 WRITE32(NFS4_SHARE_ACCESS_READ);
862 break;
863 case FMODE_WRITE:
864 WRITE32(NFS4_SHARE_ACCESS_WRITE);
865 break;
866 case FMODE_READ|FMODE_WRITE:
867 WRITE32(NFS4_SHARE_ACCESS_BOTH);
868 break;
869 default:
870 BUG();
871 }
872 WRITE32(0); /* for linux, share_deny = 0 always */
873 }
874
875 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
876 {
877 uint32_t *p;
878 /*
879 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
880 * owner 4 = 32
881 */
882 RESERVE_SPACE(8);
883 WRITE32(OP_OPEN);
884 WRITE32(arg->seqid->sequence->counter);
885 encode_share_access(xdr, arg->open_flags);
886 RESERVE_SPACE(16);
887 WRITE64(arg->clientid);
888 WRITE32(4);
889 WRITE32(arg->id);
890 }
891
892 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
893 {
894 uint32_t *p;
895
896 RESERVE_SPACE(4);
897 switch(arg->open_flags & O_EXCL) {
898 case 0:
899 WRITE32(NFS4_CREATE_UNCHECKED);
900 encode_attrs(xdr, arg->u.attrs, arg->server);
901 break;
902 default:
903 WRITE32(NFS4_CREATE_EXCLUSIVE);
904 encode_nfs4_verifier(xdr, &arg->u.verifier);
905 }
906 }
907
908 static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg)
909 {
910 uint32_t *p;
911
912 RESERVE_SPACE(4);
913 switch (arg->open_flags & O_CREAT) {
914 case 0:
915 WRITE32(NFS4_OPEN_NOCREATE);
916 break;
917 default:
918 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
919 WRITE32(NFS4_OPEN_CREATE);
920 encode_createmode(xdr, arg);
921 }
922 }
923
924 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
925 {
926 uint32_t *p;
927
928 RESERVE_SPACE(4);
929 switch (delegation_type) {
930 case 0:
931 WRITE32(NFS4_OPEN_DELEGATE_NONE);
932 break;
933 case FMODE_READ:
934 WRITE32(NFS4_OPEN_DELEGATE_READ);
935 break;
936 case FMODE_WRITE|FMODE_READ:
937 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
938 break;
939 default:
940 BUG();
941 }
942 }
943
944 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
945 {
946 uint32_t *p;
947
948 RESERVE_SPACE(4);
949 WRITE32(NFS4_OPEN_CLAIM_NULL);
950 encode_string(xdr, name->len, name->name);
951 }
952
953 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
954 {
955 uint32_t *p;
956
957 RESERVE_SPACE(4);
958 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
959 encode_delegation_type(xdr, type);
960 }
961
962 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
963 {
964 uint32_t *p;
965
966 RESERVE_SPACE(4+sizeof(stateid->data));
967 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
968 WRITEMEM(stateid->data, sizeof(stateid->data));
969 encode_string(xdr, name->len, name->name);
970 }
971
972 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
973 {
974 encode_openhdr(xdr, arg);
975 encode_opentype(xdr, arg);
976 switch (arg->claim) {
977 case NFS4_OPEN_CLAIM_NULL:
978 encode_claim_null(xdr, arg->name);
979 break;
980 case NFS4_OPEN_CLAIM_PREVIOUS:
981 encode_claim_previous(xdr, arg->u.delegation_type);
982 break;
983 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
984 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
985 break;
986 default:
987 BUG();
988 }
989 return 0;
990 }
991
992 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
993 {
994 uint32_t *p;
995
996 RESERVE_SPACE(8+sizeof(arg->stateid->data));
997 WRITE32(OP_OPEN_CONFIRM);
998 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
999 WRITE32(arg->seqid->sequence->counter);
1000
1001 return 0;
1002 }
1003
1004 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
1005 {
1006 uint32_t *p;
1007
1008 RESERVE_SPACE(8+sizeof(arg->stateid->data));
1009 WRITE32(OP_OPEN_DOWNGRADE);
1010 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
1011 WRITE32(arg->seqid->sequence->counter);
1012 encode_share_access(xdr, arg->open_flags);
1013 return 0;
1014 }
1015
1016 static int
1017 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1018 {
1019 int len = fh->size;
1020 uint32_t *p;
1021
1022 RESERVE_SPACE(8 + len);
1023 WRITE32(OP_PUTFH);
1024 WRITE32(len);
1025 WRITEMEM(fh->data, len);
1026
1027 return 0;
1028 }
1029
1030 static int encode_putrootfh(struct xdr_stream *xdr)
1031 {
1032 uint32_t *p;
1033
1034 RESERVE_SPACE(4);
1035 WRITE32(OP_PUTROOTFH);
1036
1037 return 0;
1038 }
1039
1040 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1041 {
1042 nfs4_stateid stateid;
1043 uint32_t *p;
1044
1045 RESERVE_SPACE(16);
1046 if (ctx->state != NULL) {
1047 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1048 WRITEMEM(stateid.data, sizeof(stateid.data));
1049 } else
1050 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1051 }
1052
1053 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1054 {
1055 uint32_t *p;
1056
1057 RESERVE_SPACE(4);
1058 WRITE32(OP_READ);
1059
1060 encode_stateid(xdr, args->context);
1061
1062 RESERVE_SPACE(12);
1063 WRITE64(args->offset);
1064 WRITE32(args->count);
1065
1066 return 0;
1067 }
1068
1069 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1070 {
1071 struct rpc_auth *auth = req->rq_task->tk_auth;
1072 uint32_t attrs[2] = {
1073 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1074 FATTR4_WORD1_MOUNTED_ON_FILEID,
1075 };
1076 int replen;
1077 uint32_t *p;
1078
1079 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1080 WRITE32(OP_READDIR);
1081 WRITE64(readdir->cookie);
1082 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1083 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1084 WRITE32(readdir->count);
1085 WRITE32(2);
1086 /* Switch to mounted_on_fileid if the server supports it */
1087 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1088 attrs[0] &= ~FATTR4_WORD0_FILEID;
1089 else
1090 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1091 WRITE32(attrs[0] & readdir->bitmask[0]);
1092 WRITE32(attrs[1] & readdir->bitmask[1]);
1093 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1094 __FUNCTION__,
1095 (unsigned long long)readdir->cookie,
1096 ((u32 *)readdir->verifier.data)[0],
1097 ((u32 *)readdir->verifier.data)[1],
1098 attrs[0] & readdir->bitmask[0],
1099 attrs[1] & readdir->bitmask[1]);
1100
1101 /* set up reply kvec
1102 * toplevel_status + taglen + rescount + OP_PUTFH + status
1103 * + OP_READDIR + status + verifer(2) = 9
1104 */
1105 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1106 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1107 readdir->pgbase, readdir->count);
1108 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1109 __FUNCTION__, replen, readdir->pages,
1110 readdir->pgbase, readdir->count);
1111
1112 return 0;
1113 }
1114
1115 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1116 {
1117 struct rpc_auth *auth = req->rq_task->tk_auth;
1118 unsigned int replen;
1119 uint32_t *p;
1120
1121 RESERVE_SPACE(4);
1122 WRITE32(OP_READLINK);
1123
1124 /* set up reply kvec
1125 * toplevel_status + taglen + rescount + OP_PUTFH + status
1126 * + OP_READLINK + status + string length = 8
1127 */
1128 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1129 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1130 readlink->pgbase, readlink->pglen);
1131
1132 return 0;
1133 }
1134
1135 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1136 {
1137 uint32_t *p;
1138
1139 RESERVE_SPACE(8 + name->len);
1140 WRITE32(OP_REMOVE);
1141 WRITE32(name->len);
1142 WRITEMEM(name->name, name->len);
1143
1144 return 0;
1145 }
1146
1147 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1148 {
1149 uint32_t *p;
1150
1151 RESERVE_SPACE(8 + oldname->len);
1152 WRITE32(OP_RENAME);
1153 WRITE32(oldname->len);
1154 WRITEMEM(oldname->name, oldname->len);
1155
1156 RESERVE_SPACE(4 + newname->len);
1157 WRITE32(newname->len);
1158 WRITEMEM(newname->name, newname->len);
1159
1160 return 0;
1161 }
1162
1163 static int encode_renew(struct xdr_stream *xdr, const struct nfs_client *client_stateid)
1164 {
1165 uint32_t *p;
1166
1167 RESERVE_SPACE(12);
1168 WRITE32(OP_RENEW);
1169 WRITE64(client_stateid->cl_clientid);
1170
1171 return 0;
1172 }
1173
1174 static int
1175 encode_restorefh(struct xdr_stream *xdr)
1176 {
1177 uint32_t *p;
1178
1179 RESERVE_SPACE(4);
1180 WRITE32(OP_RESTOREFH);
1181
1182 return 0;
1183 }
1184
1185 static int
1186 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1187 {
1188 uint32_t *p;
1189
1190 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1191 WRITE32(OP_SETATTR);
1192 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1193 RESERVE_SPACE(2*4);
1194 WRITE32(1);
1195 WRITE32(FATTR4_WORD0_ACL);
1196 if (arg->acl_len % 4)
1197 return -EINVAL;
1198 RESERVE_SPACE(4);
1199 WRITE32(arg->acl_len);
1200 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1201 return 0;
1202 }
1203
1204 static int
1205 encode_savefh(struct xdr_stream *xdr)
1206 {
1207 uint32_t *p;
1208
1209 RESERVE_SPACE(4);
1210 WRITE32(OP_SAVEFH);
1211
1212 return 0;
1213 }
1214
1215 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1216 {
1217 int status;
1218 uint32_t *p;
1219
1220 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1221 WRITE32(OP_SETATTR);
1222 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1223
1224 if ((status = encode_attrs(xdr, arg->iap, server)))
1225 return status;
1226
1227 return 0;
1228 }
1229
1230 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1231 {
1232 uint32_t *p;
1233
1234 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1235 WRITE32(OP_SETCLIENTID);
1236 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1237
1238 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1239 RESERVE_SPACE(4);
1240 WRITE32(setclientid->sc_prog);
1241 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1242 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1243 RESERVE_SPACE(4);
1244 WRITE32(setclientid->sc_cb_ident);
1245
1246 return 0;
1247 }
1248
1249 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs_client *client_state)
1250 {
1251 uint32_t *p;
1252
1253 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1254 WRITE32(OP_SETCLIENTID_CONFIRM);
1255 WRITE64(client_state->cl_clientid);
1256 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1257
1258 return 0;
1259 }
1260
1261 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1262 {
1263 uint32_t *p;
1264
1265 RESERVE_SPACE(4);
1266 WRITE32(OP_WRITE);
1267
1268 encode_stateid(xdr, args->context);
1269
1270 RESERVE_SPACE(16);
1271 WRITE64(args->offset);
1272 WRITE32(args->stable);
1273 WRITE32(args->count);
1274
1275 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1276
1277 return 0;
1278 }
1279
1280 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1281 {
1282 uint32_t *p;
1283
1284 RESERVE_SPACE(20);
1285
1286 WRITE32(OP_DELEGRETURN);
1287 WRITEMEM(stateid->data, sizeof(stateid->data));
1288 return 0;
1289
1290 }
1291 /*
1292 * END OF "GENERIC" ENCODE ROUTINES.
1293 */
1294
1295 /*
1296 * Encode an ACCESS request
1297 */
1298 static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1299 {
1300 struct xdr_stream xdr;
1301 struct compound_hdr hdr = {
1302 .nops = 2,
1303 };
1304 int status;
1305
1306 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1307 encode_compound_hdr(&xdr, &hdr);
1308 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1309 status = encode_access(&xdr, args->access);
1310 return status;
1311 }
1312
1313 /*
1314 * Encode LOOKUP request
1315 */
1316 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1317 {
1318 struct xdr_stream xdr;
1319 struct compound_hdr hdr = {
1320 .nops = 4,
1321 };
1322 int status;
1323
1324 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1325 encode_compound_hdr(&xdr, &hdr);
1326 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1327 goto out;
1328 if ((status = encode_lookup(&xdr, args->name)) != 0)
1329 goto out;
1330 if ((status = encode_getfh(&xdr)) != 0)
1331 goto out;
1332 status = encode_getfattr(&xdr, args->bitmask);
1333 out:
1334 return status;
1335 }
1336
1337 /*
1338 * Encode LOOKUP_ROOT request
1339 */
1340 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1341 {
1342 struct xdr_stream xdr;
1343 struct compound_hdr hdr = {
1344 .nops = 3,
1345 };
1346 int status;
1347
1348 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1349 encode_compound_hdr(&xdr, &hdr);
1350 if ((status = encode_putrootfh(&xdr)) != 0)
1351 goto out;
1352 if ((status = encode_getfh(&xdr)) == 0)
1353 status = encode_getfattr(&xdr, args->bitmask);
1354 out:
1355 return status;
1356 }
1357
1358 /*
1359 * Encode REMOVE request
1360 */
1361 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1362 {
1363 struct xdr_stream xdr;
1364 struct compound_hdr hdr = {
1365 .nops = 3,
1366 };
1367 int status;
1368
1369 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1370 encode_compound_hdr(&xdr, &hdr);
1371 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1372 goto out;
1373 if ((status = encode_remove(&xdr, args->name)) != 0)
1374 goto out;
1375 status = encode_getfattr(&xdr, args->bitmask);
1376 out:
1377 return status;
1378 }
1379
1380 /*
1381 * Encode RENAME request
1382 */
1383 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1384 {
1385 struct xdr_stream xdr;
1386 struct compound_hdr hdr = {
1387 .nops = 7,
1388 };
1389 int status;
1390
1391 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1392 encode_compound_hdr(&xdr, &hdr);
1393 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1394 goto out;
1395 if ((status = encode_savefh(&xdr)) != 0)
1396 goto out;
1397 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1398 goto out;
1399 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1400 goto out;
1401 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1402 goto out;
1403 if ((status = encode_restorefh(&xdr)) != 0)
1404 goto out;
1405 status = encode_getfattr(&xdr, args->bitmask);
1406 out:
1407 return status;
1408 }
1409
1410 /*
1411 * Encode LINK request
1412 */
1413 static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1414 {
1415 struct xdr_stream xdr;
1416 struct compound_hdr hdr = {
1417 .nops = 7,
1418 };
1419 int status;
1420
1421 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1422 encode_compound_hdr(&xdr, &hdr);
1423 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1424 goto out;
1425 if ((status = encode_savefh(&xdr)) != 0)
1426 goto out;
1427 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1428 goto out;
1429 if ((status = encode_link(&xdr, args->name)) != 0)
1430 goto out;
1431 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1432 goto out;
1433 if ((status = encode_restorefh(&xdr)) != 0)
1434 goto out;
1435 status = encode_getfattr(&xdr, args->bitmask);
1436 out:
1437 return status;
1438 }
1439
1440 /*
1441 * Encode CREATE request
1442 */
1443 static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1444 {
1445 struct xdr_stream xdr;
1446 struct compound_hdr hdr = {
1447 .nops = 7,
1448 };
1449 int status;
1450
1451 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1452 encode_compound_hdr(&xdr, &hdr);
1453 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1454 goto out;
1455 if ((status = encode_savefh(&xdr)) != 0)
1456 goto out;
1457 if ((status = encode_create(&xdr, args)) != 0)
1458 goto out;
1459 if ((status = encode_getfh(&xdr)) != 0)
1460 goto out;
1461 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1462 goto out;
1463 if ((status = encode_restorefh(&xdr)) != 0)
1464 goto out;
1465 status = encode_getfattr(&xdr, args->bitmask);
1466 out:
1467 return status;
1468 }
1469
1470 /*
1471 * Encode SYMLINK request
1472 */
1473 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1474 {
1475 return nfs4_xdr_enc_create(req, p, args);
1476 }
1477
1478 /*
1479 * Encode GETATTR request
1480 */
1481 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1482 {
1483 struct xdr_stream xdr;
1484 struct compound_hdr hdr = {
1485 .nops = 2,
1486 };
1487 int status;
1488
1489 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1490 encode_compound_hdr(&xdr, &hdr);
1491 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1492 status = encode_getfattr(&xdr, args->bitmask);
1493 return status;
1494 }
1495
1496 /*
1497 * Encode a CLOSE request
1498 */
1499 static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1500 {
1501 struct xdr_stream xdr;
1502 struct compound_hdr hdr = {
1503 .nops = 3,
1504 };
1505 int status;
1506
1507 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1508 encode_compound_hdr(&xdr, &hdr);
1509 status = encode_putfh(&xdr, args->fh);
1510 if(status)
1511 goto out;
1512 status = encode_close(&xdr, args);
1513 if (status != 0)
1514 goto out;
1515 status = encode_getfattr(&xdr, args->bitmask);
1516 out:
1517 return status;
1518 }
1519
1520 /*
1521 * Encode an OPEN request
1522 */
1523 static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1524 {
1525 struct xdr_stream xdr;
1526 struct compound_hdr hdr = {
1527 .nops = 7,
1528 };
1529 int status;
1530
1531 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1532 encode_compound_hdr(&xdr, &hdr);
1533 status = encode_putfh(&xdr, args->fh);
1534 if (status)
1535 goto out;
1536 status = encode_savefh(&xdr);
1537 if (status)
1538 goto out;
1539 status = encode_open(&xdr, args);
1540 if (status)
1541 goto out;
1542 status = encode_getfh(&xdr);
1543 if (status)
1544 goto out;
1545 status = encode_getfattr(&xdr, args->bitmask);
1546 if (status)
1547 goto out;
1548 status = encode_restorefh(&xdr);
1549 if (status)
1550 goto out;
1551 status = encode_getfattr(&xdr, args->bitmask);
1552 out:
1553 return status;
1554 }
1555
1556 /*
1557 * Encode an OPEN_CONFIRM request
1558 */
1559 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1560 {
1561 struct xdr_stream xdr;
1562 struct compound_hdr hdr = {
1563 .nops = 2,
1564 };
1565 int status;
1566
1567 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1568 encode_compound_hdr(&xdr, &hdr);
1569 status = encode_putfh(&xdr, args->fh);
1570 if(status)
1571 goto out;
1572 status = encode_open_confirm(&xdr, args);
1573 out:
1574 return status;
1575 }
1576
1577 /*
1578 * Encode an OPEN request with no attributes.
1579 */
1580 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1581 {
1582 struct xdr_stream xdr;
1583 struct compound_hdr hdr = {
1584 .nops = 3,
1585 };
1586 int status;
1587
1588 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1589 encode_compound_hdr(&xdr, &hdr);
1590 status = encode_putfh(&xdr, args->fh);
1591 if (status)
1592 goto out;
1593 status = encode_open(&xdr, args);
1594 if (status)
1595 goto out;
1596 status = encode_getfattr(&xdr, args->bitmask);
1597 out:
1598 return status;
1599 }
1600
1601 /*
1602 * Encode an OPEN_DOWNGRADE request
1603 */
1604 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1605 {
1606 struct xdr_stream xdr;
1607 struct compound_hdr hdr = {
1608 .nops = 3,
1609 };
1610 int status;
1611
1612 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1613 encode_compound_hdr(&xdr, &hdr);
1614 status = encode_putfh(&xdr, args->fh);
1615 if (status)
1616 goto out;
1617 status = encode_open_downgrade(&xdr, args);
1618 if (status != 0)
1619 goto out;
1620 status = encode_getfattr(&xdr, args->bitmask);
1621 out:
1622 return status;
1623 }
1624
1625 /*
1626 * Encode a LOCK request
1627 */
1628 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lock_args *args)
1629 {
1630 struct xdr_stream xdr;
1631 struct compound_hdr hdr = {
1632 .nops = 2,
1633 };
1634 int status;
1635
1636 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1637 encode_compound_hdr(&xdr, &hdr);
1638 status = encode_putfh(&xdr, args->fh);
1639 if(status)
1640 goto out;
1641 status = encode_lock(&xdr, args);
1642 out:
1643 return status;
1644 }
1645
1646 /*
1647 * Encode a LOCKT request
1648 */
1649 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockt_args *args)
1650 {
1651 struct xdr_stream xdr;
1652 struct compound_hdr hdr = {
1653 .nops = 2,
1654 };
1655 int status;
1656
1657 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1658 encode_compound_hdr(&xdr, &hdr);
1659 status = encode_putfh(&xdr, args->fh);
1660 if(status)
1661 goto out;
1662 status = encode_lockt(&xdr, args);
1663 out:
1664 return status;
1665 }
1666
1667 /*
1668 * Encode a LOCKU request
1669 */
1670 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_locku_args *args)
1671 {
1672 struct xdr_stream xdr;
1673 struct compound_hdr hdr = {
1674 .nops = 2,
1675 };
1676 int status;
1677
1678 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1679 encode_compound_hdr(&xdr, &hdr);
1680 status = encode_putfh(&xdr, args->fh);
1681 if(status)
1682 goto out;
1683 status = encode_locku(&xdr, args);
1684 out:
1685 return status;
1686 }
1687
1688 /*
1689 * Encode a READLINK request
1690 */
1691 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1692 {
1693 struct xdr_stream xdr;
1694 struct compound_hdr hdr = {
1695 .nops = 2,
1696 };
1697 int status;
1698
1699 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1700 encode_compound_hdr(&xdr, &hdr);
1701 status = encode_putfh(&xdr, args->fh);
1702 if(status)
1703 goto out;
1704 status = encode_readlink(&xdr, args, req);
1705 out:
1706 return status;
1707 }
1708
1709 /*
1710 * Encode a READDIR request
1711 */
1712 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1713 {
1714 struct xdr_stream xdr;
1715 struct compound_hdr hdr = {
1716 .nops = 2,
1717 };
1718 int status;
1719
1720 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1721 encode_compound_hdr(&xdr, &hdr);
1722 status = encode_putfh(&xdr, args->fh);
1723 if(status)
1724 goto out;
1725 status = encode_readdir(&xdr, args, req);
1726 out:
1727 return status;
1728 }
1729
1730 /*
1731 * Encode a READ request
1732 */
1733 static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1734 {
1735 struct rpc_auth *auth = req->rq_task->tk_auth;
1736 struct xdr_stream xdr;
1737 struct compound_hdr hdr = {
1738 .nops = 2,
1739 };
1740 int replen, status;
1741
1742 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1743 encode_compound_hdr(&xdr, &hdr);
1744 status = encode_putfh(&xdr, args->fh);
1745 if (status)
1746 goto out;
1747 status = encode_read(&xdr, args);
1748 if (status)
1749 goto out;
1750
1751 /* set up reply kvec
1752 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1753 * + OP_READ + status + eof + datalen = 9
1754 */
1755 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1756 xdr_inline_pages(&req->rq_rcv_buf, replen,
1757 args->pages, args->pgbase, args->count);
1758 out:
1759 return status;
1760 }
1761
1762 /*
1763 * Encode an SETATTR request
1764 */
1765 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1766
1767 {
1768 struct xdr_stream xdr;
1769 struct compound_hdr hdr = {
1770 .nops = 3,
1771 };
1772 int status;
1773
1774 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1775 encode_compound_hdr(&xdr, &hdr);
1776 status = encode_putfh(&xdr, args->fh);
1777 if(status)
1778 goto out;
1779 status = encode_setattr(&xdr, args, args->server);
1780 if(status)
1781 goto out;
1782 status = encode_getfattr(&xdr, args->bitmask);
1783 out:
1784 return status;
1785 }
1786
1787 /*
1788 * Encode a GETACL request
1789 */
1790 static int
1791 nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1792 struct nfs_getaclargs *args)
1793 {
1794 struct xdr_stream xdr;
1795 struct rpc_auth *auth = req->rq_task->tk_auth;
1796 struct compound_hdr hdr = {
1797 .nops = 2,
1798 };
1799 int replen, status;
1800
1801 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1802 encode_compound_hdr(&xdr, &hdr);
1803 status = encode_putfh(&xdr, args->fh);
1804 if (status)
1805 goto out;
1806 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1807 /* set up reply buffer: */
1808 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1809 xdr_inline_pages(&req->rq_rcv_buf, replen,
1810 args->acl_pages, args->acl_pgbase, args->acl_len);
1811 out:
1812 return status;
1813 }
1814
1815 /*
1816 * Encode a WRITE request
1817 */
1818 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1819 {
1820 struct xdr_stream xdr;
1821 struct compound_hdr hdr = {
1822 .nops = 3,
1823 };
1824 int status;
1825
1826 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1827 encode_compound_hdr(&xdr, &hdr);
1828 status = encode_putfh(&xdr, args->fh);
1829 if (status)
1830 goto out;
1831 status = encode_write(&xdr, args);
1832 if (status)
1833 goto out;
1834 status = encode_getfattr(&xdr, args->bitmask);
1835 out:
1836 return status;
1837 }
1838
1839 /*
1840 * a COMMIT request
1841 */
1842 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1843 {
1844 struct xdr_stream xdr;
1845 struct compound_hdr hdr = {
1846 .nops = 3,
1847 };
1848 int status;
1849
1850 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1851 encode_compound_hdr(&xdr, &hdr);
1852 status = encode_putfh(&xdr, args->fh);
1853 if (status)
1854 goto out;
1855 status = encode_commit(&xdr, args);
1856 if (status)
1857 goto out;
1858 status = encode_getfattr(&xdr, args->bitmask);
1859 out:
1860 return status;
1861 }
1862
1863 /*
1864 * FSINFO request
1865 */
1866 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1867 {
1868 struct xdr_stream xdr;
1869 struct compound_hdr hdr = {
1870 .nops = 2,
1871 };
1872 int status;
1873
1874 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1875 encode_compound_hdr(&xdr, &hdr);
1876 status = encode_putfh(&xdr, args->fh);
1877 if (!status)
1878 status = encode_fsinfo(&xdr, args->bitmask);
1879 return status;
1880 }
1881
1882 /*
1883 * a PATHCONF request
1884 */
1885 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1886 {
1887 struct xdr_stream xdr;
1888 struct compound_hdr hdr = {
1889 .nops = 2,
1890 };
1891 int status;
1892
1893 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1894 encode_compound_hdr(&xdr, &hdr);
1895 status = encode_putfh(&xdr, args->fh);
1896 if (!status)
1897 status = encode_getattr_one(&xdr,
1898 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1899 return status;
1900 }
1901
1902 /*
1903 * a STATFS request
1904 */
1905 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1906 {
1907 struct xdr_stream xdr;
1908 struct compound_hdr hdr = {
1909 .nops = 2,
1910 };
1911 int status;
1912
1913 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1914 encode_compound_hdr(&xdr, &hdr);
1915 status = encode_putfh(&xdr, args->fh);
1916 if (status == 0)
1917 status = encode_getattr_two(&xdr,
1918 args->bitmask[0] & nfs4_statfs_bitmap[0],
1919 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1920 return status;
1921 }
1922
1923 /*
1924 * GETATTR_BITMAP request
1925 */
1926 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1927 {
1928 struct xdr_stream xdr;
1929 struct compound_hdr hdr = {
1930 .nops = 2,
1931 };
1932 int status;
1933
1934 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1935 encode_compound_hdr(&xdr, &hdr);
1936 status = encode_putfh(&xdr, fhandle);
1937 if (status == 0)
1938 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1939 FATTR4_WORD0_LINK_SUPPORT|
1940 FATTR4_WORD0_SYMLINK_SUPPORT|
1941 FATTR4_WORD0_ACLSUPPORT);
1942 return status;
1943 }
1944
1945 /*
1946 * a RENEW request
1947 */
1948 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs_client *clp)
1949 {
1950 struct xdr_stream xdr;
1951 struct compound_hdr hdr = {
1952 .nops = 1,
1953 };
1954
1955 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1956 encode_compound_hdr(&xdr, &hdr);
1957 return encode_renew(&xdr, clp);
1958 }
1959
1960 /*
1961 * a SETCLIENTID request
1962 */
1963 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1964 {
1965 struct xdr_stream xdr;
1966 struct compound_hdr hdr = {
1967 .nops = 1,
1968 };
1969
1970 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1971 encode_compound_hdr(&xdr, &hdr);
1972 return encode_setclientid(&xdr, sc);
1973 }
1974
1975 /*
1976 * a SETCLIENTID_CONFIRM request
1977 */
1978 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_client *clp)
1979 {
1980 struct xdr_stream xdr;
1981 struct compound_hdr hdr = {
1982 .nops = 3,
1983 };
1984 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1985 int status;
1986
1987 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1988 encode_compound_hdr(&xdr, &hdr);
1989 status = encode_setclientid_confirm(&xdr, clp);
1990 if (!status)
1991 status = encode_putrootfh(&xdr);
1992 if (!status)
1993 status = encode_fsinfo(&xdr, lease_bitmap);
1994 return status;
1995 }
1996
1997 /*
1998 * DELEGRETURN request
1999 */
2000 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
2001 {
2002 struct xdr_stream xdr;
2003 struct compound_hdr hdr = {
2004 .nops = 3,
2005 };
2006 int status;
2007
2008 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2009 encode_compound_hdr(&xdr, &hdr);
2010 status = encode_putfh(&xdr, args->fhandle);
2011 if (status != 0)
2012 goto out;
2013 status = encode_delegreturn(&xdr, args->stateid);
2014 if (status != 0)
2015 goto out;
2016 status = encode_getfattr(&xdr, args->bitmask);
2017 out:
2018 return status;
2019 }
2020
2021 /*
2022 * Encode FS_LOCATIONS request
2023 */
2024 static int nfs4_xdr_enc_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations_arg *args)
2025 {
2026 struct xdr_stream xdr;
2027 struct compound_hdr hdr = {
2028 .nops = 3,
2029 };
2030 struct rpc_auth *auth = req->rq_task->tk_auth;
2031 int replen;
2032 int status;
2033
2034 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
2035 encode_compound_hdr(&xdr, &hdr);
2036 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
2037 goto out;
2038 if ((status = encode_lookup(&xdr, args->name)) != 0)
2039 goto out;
2040 if ((status = encode_fs_locations(&xdr, args->bitmask)) != 0)
2041 goto out;
2042 /* set up reply
2043 * toplevel_status + OP_PUTFH + status
2044 * + OP_LOOKUP + status + OP_GETATTR + status = 7
2045 */
2046 replen = (RPC_REPHDRSIZE + auth->au_rslack + 7) << 2;
2047 xdr_inline_pages(&req->rq_rcv_buf, replen, &args->page,
2048 0, PAGE_SIZE);
2049 out:
2050 return status;
2051 }
2052
2053 /*
2054 * START OF "GENERIC" DECODE ROUTINES.
2055 * These may look a little ugly since they are imported from a "generic"
2056 * set of XDR encode/decode routines which are intended to be shared by
2057 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2058 *
2059 * If the pain of reading these is too great, it should be a straightforward
2060 * task to translate them into Linux-specific versions which are more
2061 * consistent with the style used in NFSv2/v3...
2062 */
2063 #define READ32(x) (x) = ntohl(*p++)
2064 #define READ64(x) do { \
2065 (x) = (u64)ntohl(*p++) << 32; \
2066 (x) |= ntohl(*p++); \
2067 } while (0)
2068 #define READTIME(x) do { \
2069 p++; \
2070 (x.tv_sec) = ntohl(*p++); \
2071 (x.tv_nsec) = ntohl(*p++); \
2072 } while (0)
2073 #define COPYMEM(x,nbytes) do { \
2074 memcpy((x), p, nbytes); \
2075 p += XDR_QUADLEN(nbytes); \
2076 } while (0)
2077
2078 #define READ_BUF(nbytes) do { \
2079 p = xdr_inline_decode(xdr, nbytes); \
2080 if (!p) { \
2081 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2082 __FUNCTION__, __LINE__); \
2083 return -EIO; \
2084 } \
2085 } while (0)
2086
2087 static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string)
2088 {
2089 uint32_t *p;
2090
2091 READ_BUF(4);
2092 READ32(*len);
2093 READ_BUF(*len);
2094 *string = (char *)p;
2095 return 0;
2096 }
2097
2098 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2099 {
2100 uint32_t *p;
2101
2102 READ_BUF(8);
2103 READ32(hdr->status);
2104 READ32(hdr->taglen);
2105
2106 READ_BUF(hdr->taglen + 4);
2107 hdr->tag = (char *)p;
2108 p += XDR_QUADLEN(hdr->taglen);
2109 READ32(hdr->nops);
2110 return 0;
2111 }
2112
2113 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2114 {
2115 uint32_t *p;
2116 uint32_t opnum;
2117 int32_t nfserr;
2118
2119 READ_BUF(8);
2120 READ32(opnum);
2121 if (opnum != expected) {
2122 printk(KERN_NOTICE
2123 "nfs4_decode_op_hdr: Server returned operation"
2124 " %d but we issued a request for %d\n",
2125 opnum, expected);
2126 return -EIO;
2127 }
2128 READ32(nfserr);
2129 if (nfserr != NFS_OK)
2130 return -nfs4_stat_to_errno(nfserr);
2131 return 0;
2132 }
2133
2134 /* Dummy routine */
2135 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp)
2136 {
2137 uint32_t *p;
2138 unsigned int strlen;
2139 char *str;
2140
2141 READ_BUF(12);
2142 return decode_opaque_inline(xdr, &strlen, &str);
2143 }
2144
2145 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2146 {
2147 uint32_t bmlen, *p;
2148
2149 READ_BUF(4);
2150 READ32(bmlen);
2151
2152 bitmap[0] = bitmap[1] = 0;
2153 READ_BUF((bmlen << 2));
2154 if (bmlen > 0) {
2155 READ32(bitmap[0]);
2156 if (bmlen > 1)
2157 READ32(bitmap[1]);
2158 }
2159 return 0;
2160 }
2161
2162 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2163 {
2164 uint32_t *p;
2165
2166 READ_BUF(4);
2167 READ32(*attrlen);
2168 *savep = xdr->p;
2169 return 0;
2170 }
2171
2172 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2173 {
2174 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2175 decode_attr_bitmap(xdr, bitmask);
2176 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2177 } else
2178 bitmask[0] = bitmask[1] = 0;
2179 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2180 return 0;
2181 }
2182
2183 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2184 {
2185 uint32_t *p;
2186
2187 *type = 0;
2188 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2189 return -EIO;
2190 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2191 READ_BUF(4);
2192 READ32(*type);
2193 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2194 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2195 return -EIO;
2196 }
2197 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2198 }
2199 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2200 return 0;
2201 }
2202
2203 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2204 {
2205 uint32_t *p;
2206
2207 *change = 0;
2208 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2209 return -EIO;
2210 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2211 READ_BUF(8);
2212 READ64(*change);
2213 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2214 }
2215 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2216 (unsigned long long)*change);
2217 return 0;
2218 }
2219
2220 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2221 {
2222 uint32_t *p;
2223
2224 *size = 0;
2225 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2226 return -EIO;
2227 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2228 READ_BUF(8);
2229 READ64(*size);
2230 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2231 }
2232 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2233 return 0;
2234 }
2235
2236 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2237 {
2238 uint32_t *p;
2239
2240 *res = 0;
2241 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2242 return -EIO;
2243 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2244 READ_BUF(4);
2245 READ32(*res);
2246 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2247 }
2248 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2249 return 0;
2250 }
2251
2252 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2253 {
2254 uint32_t *p;
2255
2256 *res = 0;
2257 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2258 return -EIO;
2259 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2260 READ_BUF(4);
2261 READ32(*res);
2262 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2263 }
2264 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2265 return 0;
2266 }
2267
2268 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_fsid *fsid)
2269 {
2270 uint32_t *p;
2271
2272 fsid->major = 0;
2273 fsid->minor = 0;
2274 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2275 return -EIO;
2276 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2277 READ_BUF(16);
2278 READ64(fsid->major);
2279 READ64(fsid->minor);
2280 bitmap[0] &= ~FATTR4_WORD0_FSID;
2281 }
2282 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2283 (unsigned long long)fsid->major,
2284 (unsigned long long)fsid->minor);
2285 return 0;
2286 }
2287
2288 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2289 {
2290 uint32_t *p;
2291
2292 *res = 60;
2293 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2294 return -EIO;
2295 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2296 READ_BUF(4);
2297 READ32(*res);
2298 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2299 }
2300 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2301 return 0;
2302 }
2303
2304 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2305 {
2306 uint32_t *p;
2307
2308 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2309 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2310 return -EIO;
2311 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2312 READ_BUF(4);
2313 READ32(*res);
2314 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2315 }
2316 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2317 return 0;
2318 }
2319
2320 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2321 {
2322 uint32_t *p;
2323
2324 *fileid = 0;
2325 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2326 return -EIO;
2327 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2328 READ_BUF(8);
2329 READ64(*fileid);
2330 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2331 }
2332 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2333 return 0;
2334 }
2335
2336 static int decode_attr_mounted_on_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2337 {
2338 uint32_t *p;
2339
2340 *fileid = 0;
2341 if (unlikely(bitmap[1] & (FATTR4_WORD1_MOUNTED_ON_FILEID - 1U)))
2342 return -EIO;
2343 if (likely(bitmap[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)) {
2344 READ_BUF(8);
2345 READ64(*fileid);
2346 bitmap[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
2347 }
2348 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2349 return 0;
2350 }
2351
2352 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2353 {
2354 uint32_t *p;
2355 int status = 0;
2356
2357 *res = 0;
2358 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2359 return -EIO;
2360 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2361 READ_BUF(8);
2362 READ64(*res);
2363 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2364 }
2365 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2366 return status;
2367 }
2368
2369 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2370 {
2371 uint32_t *p;
2372 int status = 0;
2373
2374 *res = 0;
2375 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2376 return -EIO;
2377 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2378 READ_BUF(8);
2379 READ64(*res);
2380 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2381 }
2382 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2383 return status;
2384 }
2385
2386 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2387 {
2388 uint32_t *p;
2389 int status = 0;
2390
2391 *res = 0;
2392 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2393 return -EIO;
2394 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2395 READ_BUF(8);
2396 READ64(*res);
2397 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2398 }
2399 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2400 return status;
2401 }
2402
2403 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
2404 {
2405 int n;
2406 uint32_t *p;
2407 int status = 0;
2408
2409 READ_BUF(4);
2410 READ32(n);
2411 if (n < 0)
2412 goto out_eio;
2413 if (n == 0)
2414 goto root_path;
2415 dprintk("path ");
2416 path->ncomponents = 0;
2417 while (path->ncomponents < n) {
2418 struct nfs4_string *component = &path->components[path->ncomponents];
2419 status = decode_opaque_inline(xdr, &component->len, &component->data);
2420 if (unlikely(status != 0))
2421 goto out_eio;
2422 if (path->ncomponents != n)
2423 dprintk("/");
2424 dprintk("%s", component->data);
2425 if (path->ncomponents < NFS4_PATHNAME_MAXCOMPONENTS)
2426 path->ncomponents++;
2427 else {
2428 dprintk("cannot parse %d components in path\n", n);
2429 goto out_eio;
2430 }
2431 }
2432 out:
2433 dprintk("\n");
2434 return status;
2435 root_path:
2436 /* a root pathname is sent as a zero component4 */
2437 path->ncomponents = 1;
2438 path->components[0].len=0;
2439 path->components[0].data=NULL;
2440 dprintk("path /\n");
2441 goto out;
2442 out_eio:
2443 dprintk(" status %d", status);
2444 status = -EIO;
2445 goto out;
2446 }
2447
2448 static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fs_locations *res)
2449 {
2450 int n;
2451 uint32_t *p;
2452 int status = -EIO;
2453
2454 if (unlikely(bitmap[0] & (FATTR4_WORD0_FS_LOCATIONS -1U)))
2455 goto out;
2456 status = 0;
2457 if (unlikely(!(bitmap[0] & FATTR4_WORD0_FS_LOCATIONS)))
2458 goto out;
2459 dprintk("%s: fsroot ", __FUNCTION__);
2460 status = decode_pathname(xdr, &res->fs_path);
2461 if (unlikely(status != 0))
2462 goto out;
2463 READ_BUF(4);
2464 READ32(n);
2465 if (n <= 0)
2466 goto out_eio;
2467 res->nlocations = 0;
2468 while (res->nlocations < n) {
2469 int m;
2470 struct nfs4_fs_location *loc = &res->locations[res->nlocations];
2471
2472 READ_BUF(4);
2473 READ32(m);
2474 if (m <= 0)
2475 goto out_eio;
2476
2477 loc->nservers = 0;
2478 dprintk("%s: servers ", __FUNCTION__);
2479 while (loc->nservers < m) {
2480 struct nfs4_string *server = &loc->servers[loc->nservers];
2481 status = decode_opaque_inline(xdr, &server->len, &server->data);
2482 if (unlikely(status != 0))
2483 goto out_eio;
2484 dprintk("%s ", server->data);
2485 if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
2486 loc->nservers++;
2487 else {
2488 int i;
2489 dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
2490 for (i = loc->nservers; i < m; i++) {
2491 int len;
2492 char *data;
2493 status = decode_opaque_inline(xdr, &len, &data);
2494 if (unlikely(status != 0))
2495 goto out_eio;
2496 }
2497 }
2498 }
2499 status = decode_pathname(xdr, &loc->rootpath);
2500 if (unlikely(status != 0))
2501 goto out_eio;
2502 if (res->nlocations < NFS4_FS_LOCATIONS_MAXENTRIES)
2503 res->nlocations++;
2504 }
2505 out:
2506 dprintk("%s: fs_locations done, error = %d\n", __FUNCTION__, status);
2507 return status;
2508 out_eio:
2509 status = -EIO;
2510 goto out;
2511 }
2512
2513 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2514 {
2515 uint32_t *p;
2516 int status = 0;
2517
2518 *res = 0;
2519 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2520 return -EIO;
2521 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2522 READ_BUF(8);
2523 READ64(*res);
2524 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2525 }
2526 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2527 return status;
2528 }
2529
2530 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2531 {
2532 uint32_t *p;
2533 int status = 0;
2534
2535 *maxlink = 1;
2536 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2537 return -EIO;
2538 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2539 READ_BUF(4);
2540 READ32(*maxlink);
2541 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2542 }
2543 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2544 return status;
2545 }
2546
2547 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2548 {
2549 uint32_t *p;
2550 int status = 0;
2551
2552 *maxname = 1024;
2553 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2554 return -EIO;
2555 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2556 READ_BUF(4);
2557 READ32(*maxname);
2558 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2559 }
2560 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2561 return status;
2562 }
2563
2564 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2565 {
2566 uint32_t *p;
2567 int status = 0;
2568
2569 *res = 1024;
2570 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2571 return -EIO;
2572 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2573 uint64_t maxread;
2574 READ_BUF(8);
2575 READ64(maxread);
2576 if (maxread > 0x7FFFFFFF)
2577 maxread = 0x7FFFFFFF;
2578 *res = (uint32_t)maxread;
2579 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2580 }
2581 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2582 return status;
2583 }
2584
2585 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2586 {
2587 uint32_t *p;
2588 int status = 0;
2589
2590 *res = 1024;
2591 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2592 return -EIO;
2593 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2594 uint64_t maxwrite;
2595 READ_BUF(8);
2596 READ64(maxwrite);
2597 if (maxwrite > 0x7FFFFFFF)
2598 maxwrite = 0x7FFFFFFF;
2599 *res = (uint32_t)maxwrite;
2600 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2601 }
2602 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2603 return status;
2604 }
2605
2606 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2607 {
2608 uint32_t *p;
2609
2610 *mode = 0;
2611 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2612 return -EIO;
2613 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2614 READ_BUF(4);
2615 READ32(*mode);
2616 *mode &= ~S_IFMT;
2617 bitmap[1] &= ~FATTR4_WORD1_MODE;
2618 }
2619 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2620 return 0;
2621 }
2622
2623 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2624 {
2625 uint32_t *p;
2626
2627 *nlink = 1;
2628 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2629 return -EIO;
2630 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2631 READ_BUF(4);
2632 READ32(*nlink);
2633 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2634 }
2635 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2636 return 0;
2637 }
2638
2639 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, int32_t *uid)
2640 {
2641 uint32_t len, *p;
2642
2643 *uid = -2;
2644 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2645 return -EIO;
2646 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2647 READ_BUF(4);
2648 READ32(len);
2649 READ_BUF(len);
2650 if (len < XDR_MAX_NETOBJ) {
2651 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2652 dprintk("%s: nfs_map_name_to_uid failed!\n",
2653 __FUNCTION__);
2654 } else
2655 printk(KERN_WARNING "%s: name too long (%u)!\n",
2656 __FUNCTION__, len);
2657 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2658 }
2659 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2660 return 0;
2661 }
2662
2663 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs_client *clp, int32_t *gid)
2664 {
2665 uint32_t len, *p;
2666
2667 *gid = -2;
2668 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2669 return -EIO;
2670 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2671 READ_BUF(4);
2672 READ32(len);
2673 READ_BUF(len);
2674 if (len < XDR_MAX_NETOBJ) {
2675 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2676 dprintk("%s: nfs_map_group_to_gid failed!\n",
2677 __FUNCTION__);
2678 } else
2679 printk(KERN_WARNING "%s: name too long (%u)!\n",
2680 __FUNCTION__, len);
2681 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2682 }
2683 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2684 return 0;
2685 }
2686
2687 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2688 {
2689 uint32_t major = 0, minor = 0, *p;
2690
2691 *rdev = MKDEV(0,0);
2692 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2693 return -EIO;
2694 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2695 dev_t tmp;
2696
2697 READ_BUF(8);
2698 READ32(major);
2699 READ32(minor);
2700 tmp = MKDEV(major, minor);
2701 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2702 *rdev = tmp;
2703 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2704 }
2705 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2706 return 0;
2707 }
2708
2709 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2710 {
2711 uint32_t *p;
2712 int status = 0;
2713
2714 *res = 0;
2715 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2716 return -EIO;
2717 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2718 READ_BUF(8);
2719 READ64(*res);
2720 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2721 }
2722 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2723 return status;
2724 }
2725
2726 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2727 {
2728 uint32_t *p;
2729 int status = 0;
2730
2731 *res = 0;
2732 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2733 return -EIO;
2734 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2735 READ_BUF(8);
2736 READ64(*res);
2737 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2738 }
2739 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2740 return status;
2741 }
2742
2743 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2744 {
2745 uint32_t *p;
2746 int status = 0;
2747
2748 *res = 0;
2749 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2750 return -EIO;
2751 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2752 READ_BUF(8);
2753 READ64(*res);
2754 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2755 }
2756 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2757 return status;
2758 }
2759
2760 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2761 {
2762 uint32_t *p;
2763
2764 *used = 0;
2765 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2766 return -EIO;
2767 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2768 READ_BUF(8);
2769 READ64(*used);
2770 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2771 }
2772 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2773 (unsigned long long)*used);
2774 return 0;
2775 }
2776
2777 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2778 {
2779 uint32_t *p;
2780 uint64_t sec;
2781 uint32_t nsec;
2782
2783 READ_BUF(12);
2784 READ64(sec);
2785 READ32(nsec);
2786 time->tv_sec = (time_t)sec;
2787 time->tv_nsec = (long)nsec;
2788 return 0;
2789 }
2790
2791 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2792 {
2793 int status = 0;
2794
2795 time->tv_sec = 0;
2796 time->tv_nsec = 0;
2797 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2798 return -EIO;
2799 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2800 status = decode_attr_time(xdr, time);
2801 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2802 }
2803 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2804 return status;
2805 }
2806
2807 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2808 {
2809 int status = 0;
2810
2811 time->tv_sec = 0;
2812 time->tv_nsec = 0;
2813 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2814 return -EIO;
2815 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2816 status = decode_attr_time(xdr, time);
2817 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2818 }
2819 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2820 return status;
2821 }
2822
2823 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2824 {
2825 int status = 0;
2826
2827 time->tv_sec = 0;
2828 time->tv_nsec = 0;
2829 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2830 return -EIO;
2831 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2832 status = decode_attr_time(xdr, time);
2833 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2834 }
2835 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2836 return status;
2837 }
2838
2839 static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2840 {
2841 unsigned int attrwords = XDR_QUADLEN(attrlen);
2842 unsigned int nwords = xdr->p - savep;
2843
2844 if (unlikely(attrwords != nwords)) {
2845 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2846 __FUNCTION__,
2847 attrwords << 2,
2848 (attrwords < nwords) ? '<' : '>',
2849 nwords << 2);
2850 return -EIO;
2851 }
2852 return 0;
2853 }
2854
2855 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2856 {
2857 uint32_t *p;
2858
2859 READ_BUF(20);
2860 READ32(cinfo->atomic);
2861 READ64(cinfo->before);
2862 READ64(cinfo->after);
2863 return 0;
2864 }
2865
2866 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2867 {
2868 uint32_t *p;
2869 uint32_t supp, acc;
2870 int status;
2871
2872 status = decode_op_hdr(xdr, OP_ACCESS);
2873 if (status)
2874 return status;
2875 READ_BUF(8);
2876 READ32(supp);
2877 READ32(acc);
2878 access->supported = supp;
2879 access->access = acc;
2880 return 0;
2881 }
2882
2883 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2884 {
2885 uint32_t *p;
2886 int status;
2887
2888 status = decode_op_hdr(xdr, OP_CLOSE);
2889 if (status)
2890 return status;
2891 READ_BUF(sizeof(res->stateid.data));
2892 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2893 return 0;
2894 }
2895
2896 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2897 {
2898 uint32_t *p;
2899 int status;
2900
2901 status = decode_op_hdr(xdr, OP_COMMIT);
2902 if (status)
2903 return status;
2904 READ_BUF(8);
2905 COPYMEM(res->verf->verifier, 8);
2906 return 0;
2907 }
2908
2909 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2910 {
2911 uint32_t *p;
2912 uint32_t bmlen;
2913 int status;
2914
2915 status = decode_op_hdr(xdr, OP_CREATE);
2916 if (status)
2917 return status;
2918 if ((status = decode_change_info(xdr, cinfo)))
2919 return status;
2920 READ_BUF(4);
2921 READ32(bmlen);
2922 READ_BUF(bmlen << 2);
2923 return 0;
2924 }
2925
2926 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2927 {
2928 uint32_t *savep;
2929 uint32_t attrlen,
2930 bitmap[2] = {0};
2931 int status;
2932
2933 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2934 goto xdr_error;
2935 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2936 goto xdr_error;
2937 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2938 goto xdr_error;
2939 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2940 goto xdr_error;
2941 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2942 goto xdr_error;
2943 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2944 goto xdr_error;
2945 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2946 goto xdr_error;
2947 status = verify_attr_len(xdr, savep, attrlen);
2948 xdr_error:
2949 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2950 return status;
2951 }
2952
2953 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2954 {
2955 uint32_t *savep;
2956 uint32_t attrlen,
2957 bitmap[2] = {0};
2958 int status;
2959
2960 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2961 goto xdr_error;
2962 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2963 goto xdr_error;
2964 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2965 goto xdr_error;
2966
2967 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2968 goto xdr_error;
2969 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2970 goto xdr_error;
2971 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2972 goto xdr_error;
2973 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2974 goto xdr_error;
2975 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2976 goto xdr_error;
2977 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2978 goto xdr_error;
2979
2980 status = verify_attr_len(xdr, savep, attrlen);
2981 xdr_error:
2982 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2983 return status;
2984 }
2985
2986 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2987 {
2988 uint32_t *savep;
2989 uint32_t attrlen,
2990 bitmap[2] = {0};
2991 int status;
2992
2993 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2994 goto xdr_error;
2995 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2996 goto xdr_error;
2997 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2998 goto xdr_error;
2999
3000 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
3001 goto xdr_error;
3002 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
3003 goto xdr_error;
3004
3005 status = verify_attr_len(xdr, savep, attrlen);
3006 xdr_error:
3007 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3008 return status;
3009 }
3010
3011 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
3012 {
3013 uint32_t *savep;
3014 uint32_t attrlen,
3015 bitmap[2] = {0},
3016 type;
3017 int status, fmode = 0;
3018 uint64_t fileid;
3019
3020 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3021 goto xdr_error;
3022 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3023 goto xdr_error;
3024
3025 fattr->bitmap[0] = bitmap[0];
3026 fattr->bitmap[1] = bitmap[1];
3027
3028 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3029 goto xdr_error;
3030
3031
3032 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
3033 goto xdr_error;
3034 fattr->type = nfs_type2fmt[type].nfs2type;
3035 fmode = nfs_type2fmt[type].mode;
3036
3037 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
3038 goto xdr_error;
3039 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
3040 goto xdr_error;
3041 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid)) != 0)
3042 goto xdr_error;
3043 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
3044 goto xdr_error;
3045 if ((status = decode_attr_fs_locations(xdr, bitmap, container_of(fattr,
3046 struct nfs4_fs_locations,
3047 fattr))) != 0)
3048 goto xdr_error;
3049 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
3050 goto xdr_error;
3051 fattr->mode |= fmode;
3052 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
3053 goto xdr_error;
3054 if ((status = decode_attr_owner(xdr, bitmap, server->nfs_client, &fattr->uid)) != 0)
3055 goto xdr_error;
3056 if ((status = decode_attr_group(xdr, bitmap, server->nfs_client, &fattr->gid)) != 0)
3057 goto xdr_error;
3058 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
3059 goto xdr_error;
3060 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
3061 goto xdr_error;
3062 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
3063 goto xdr_error;
3064 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
3065 goto xdr_error;
3066 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
3067 goto xdr_error;
3068 if ((status = decode_attr_mounted_on_fileid(xdr, bitmap, &fileid)) != 0)
3069 goto xdr_error;
3070 if (fattr->fileid == 0 && fileid != 0)
3071 fattr->fileid = fileid;
3072 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
3073 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
3074 xdr_error:
3075 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
3076 return status;
3077 }
3078
3079
3080 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
3081 {
3082 uint32_t *savep;
3083 uint32_t attrlen, bitmap[2];
3084 int status;
3085
3086 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3087 goto xdr_error;
3088 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3089 goto xdr_error;
3090 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3091 goto xdr_error;
3092
3093 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
3094
3095 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
3096 goto xdr_error;
3097 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
3098 goto xdr_error;
3099 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
3100 goto xdr_error;
3101 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
3102 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
3103 goto xdr_error;
3104 fsinfo->wtpref = fsinfo->wtmax;
3105
3106 status = verify_attr_len(xdr, savep, attrlen);
3107 xdr_error:
3108 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
3109 return status;
3110 }
3111
3112 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
3113 {
3114 uint32_t *p;
3115 uint32_t len;
3116 int status;
3117
3118 status = decode_op_hdr(xdr, OP_GETFH);
3119 if (status)
3120 return status;
3121 /* Zero handle first to allow comparisons */
3122 memset(fh, 0, sizeof(*fh));
3123
3124 READ_BUF(4);
3125 READ32(len);
3126 if (len > NFS4_FHSIZE)
3127 return -EIO;
3128 fh->size = len;
3129 READ_BUF(len);
3130 COPYMEM(fh->data, len);
3131 return 0;
3132 }
3133
3134 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3135 {
3136 int status;
3137
3138 status = decode_op_hdr(xdr, OP_LINK);
3139 if (status)
3140 return status;
3141 return decode_change_info(xdr, cinfo);
3142 }
3143
3144 /*
3145 * We create the owner, so we know a proper owner.id length is 4.
3146 */
3147 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
3148 {
3149 uint64_t offset, length, clientid;
3150 uint32_t *p;
3151 uint32_t namelen, type;
3152
3153 READ_BUF(32);
3154 READ64(offset);
3155 READ64(length);
3156 READ32(type);
3157 if (fl != NULL) {
3158 fl->fl_start = (loff_t)offset;
3159 fl->fl_end = fl->fl_start + (loff_t)length - 1;
3160 if (length == ~(uint64_t)0)
3161 fl->fl_end = OFFSET_MAX;
3162 fl->fl_type = F_WRLCK;
3163 if (type & 1)
3164 fl->fl_type = F_RDLCK;
3165 fl->fl_pid = 0;
3166 }
3167 READ64(clientid);
3168 READ32(namelen);
3169 READ_BUF(namelen);
3170 return -NFS4ERR_DENIED;
3171 }
3172
3173 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
3174 {
3175 uint32_t *p;
3176 int status;
3177
3178 status = decode_op_hdr(xdr, OP_LOCK);
3179 if (status == 0) {
3180 READ_BUF(sizeof(res->stateid.data));
3181 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3182 } else if (status == -NFS4ERR_DENIED)
3183 return decode_lock_denied(xdr, NULL);
3184 return status;
3185 }
3186
3187 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3188 {
3189 int status;
3190 status = decode_op_hdr(xdr, OP_LOCKT);
3191 if (status == -NFS4ERR_DENIED)
3192 return decode_lock_denied(xdr, res->denied);
3193 return status;
3194 }
3195
3196 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3197 {
3198 uint32_t *p;
3199 int status;
3200
3201 status = decode_op_hdr(xdr, OP_LOCKU);
3202 if (status == 0) {
3203 READ_BUF(sizeof(res->stateid.data));
3204 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3205 }
3206 return status;
3207 }
3208
3209 static int decode_lookup(struct xdr_stream *xdr)
3210 {
3211 return decode_op_hdr(xdr, OP_LOOKUP);
3212 }
3213
3214 /* This is too sick! */
3215 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3216 {
3217 uint32_t *p;
3218 uint32_t limit_type, nblocks, blocksize;
3219
3220 READ_BUF(12);
3221 READ32(limit_type);
3222 switch (limit_type) {
3223 case 1:
3224 READ64(*maxsize);
3225 break;
3226 case 2:
3227 READ32(nblocks);
3228 READ32(blocksize);
3229 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3230 }
3231 return 0;
3232 }
3233
3234 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3235 {
3236 uint32_t *p;
3237 uint32_t delegation_type;
3238
3239 READ_BUF(4);
3240 READ32(delegation_type);
3241 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3242 res->delegation_type = 0;
3243 return 0;
3244 }
3245 READ_BUF(20);
3246 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3247 READ32(res->do_recall);
3248 switch (delegation_type) {
3249 case NFS4_OPEN_DELEGATE_READ:
3250 res->delegation_type = FMODE_READ;
3251 break;
3252 case NFS4_OPEN_DELEGATE_WRITE:
3253 res->delegation_type = FMODE_WRITE|FMODE_READ;
3254 if (decode_space_limit(xdr, &res->maxsize) < 0)
3255 return -EIO;
3256 }
3257 return decode_ace(xdr, NULL, res->server->nfs_client);
3258 }
3259
3260 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3261 {
3262 uint32_t *p;
3263 uint32_t bmlen;
3264 int status;
3265
3266 status = decode_op_hdr(xdr, OP_OPEN);
3267 if (status)
3268 return status;
3269 READ_BUF(sizeof(res->stateid.data));
3270 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3271
3272 decode_change_info(xdr, &res->cinfo);
3273
3274 READ_BUF(8);
3275 READ32(res->rflags);
3276 READ32(bmlen);
3277 if (bmlen > 10)
3278 goto xdr_error;
3279
3280 READ_BUF(bmlen << 2);
3281 p += bmlen;
3282 return decode_delegation(xdr, res);
3283 xdr_error:
3284 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
3285 return -EIO;
3286 }
3287
3288 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3289 {
3290 uint32_t *p;
3291 int status;
3292
3293 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3294 if (status)
3295 return status;
3296 READ_BUF(sizeof(res->stateid.data));
3297 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3298 return 0;
3299 }
3300
3301 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3302 {
3303 uint32_t *p;
3304 int status;
3305
3306 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3307 if (status)
3308 return status;
3309 READ_BUF(sizeof(res->stateid.data));
3310 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3311 return 0;
3312 }
3313
3314 static int decode_putfh(struct xdr_stream *xdr)
3315 {
3316 return decode_op_hdr(xdr, OP_PUTFH);
3317 }
3318
3319 static int decode_putrootfh(struct xdr_stream *xdr)
3320 {
3321 return decode_op_hdr(xdr, OP_PUTROOTFH);
3322 }
3323
3324 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3325 {
3326 struct kvec *iov = req->rq_rcv_buf.head;
3327 uint32_t *p;
3328 uint32_t count, eof, recvd, hdrlen;
3329 int status;
3330
3331 status = decode_op_hdr(xdr, OP_READ);
3332 if (status)
3333 return status;
3334 READ_BUF(8);
3335 READ32(eof);
3336 READ32(count);
3337 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3338 recvd = req->rq_rcv_buf.len - hdrlen;
3339 if (count > recvd) {
3340 printk(KERN_WARNING "NFS: server cheating in read reply: "
3341 "count %u > recvd %u\n", count, recvd);
3342 count = recvd;
3343 eof = 0;
3344 }
3345 xdr_read_pages(xdr, count);
3346 res->eof = eof;
3347 res->count = count;
3348 return 0;
3349 }
3350
3351 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3352 {
3353 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3354 struct page *page = *rcvbuf->pages;
3355 struct kvec *iov = rcvbuf->head;
3356 unsigned int nr, pglen = rcvbuf->page_len;
3357 uint32_t *end, *entry, *p, *kaddr;
3358 uint32_t len, attrlen, xlen;
3359 int hdrlen, recvd, status;
3360
3361 status = decode_op_hdr(xdr, OP_READDIR);
3362 if (status)
3363 return status;
3364 READ_BUF(8);
3365 COPYMEM(readdir->verifier.data, 8);
3366 dprintk("%s: verifier = 0x%x%x\n",
3367 __FUNCTION__,
3368 ((u32 *)readdir->verifier.data)[0],
3369 ((u32 *)readdir->verifier.data)[1]);
3370
3371
3372 hdrlen = (char *) p - (char *) iov->iov_base;
3373 recvd = rcvbuf->len - hdrlen;
3374 if (pglen > recvd)
3375 pglen = recvd;
3376 xdr_read_pages(xdr, pglen);
3377
3378 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3379 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3380 end = p + ((pglen + readdir->pgbase) >> 2);
3381 entry = p;
3382 for (nr = 0; *p++; nr++) {
3383 if (end - p < 3)
3384 goto short_pkt;
3385 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3386 p += 2; /* cookie */
3387 len = ntohl(*p++); /* filename length */
3388 if (len > NFS4_MAXNAMLEN) {
3389 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3390 goto err_unmap;
3391 }
3392 xlen = XDR_QUADLEN(len);
3393 if (end - p < xlen + 1)
3394 goto short_pkt;
3395 dprintk("filename = %*s\n", len, (char *)p);
3396 p += xlen;
3397 len = ntohl(*p++); /* bitmap length */
3398 if (end - p < len + 1)
3399 goto short_pkt;
3400 p += len;
3401 attrlen = XDR_QUADLEN(ntohl(*p++));
3402 if (end - p < attrlen + 2)
3403 goto short_pkt;
3404 p += attrlen; /* attributes */
3405 entry = p;
3406 }
3407 if (!nr && (entry[0] != 0 || entry[1] == 0))
3408 goto short_pkt;
3409 out:
3410 kunmap_atomic(kaddr, KM_USER0);
3411 return 0;
3412 short_pkt:
3413 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3414 entry[0] = entry[1] = 0;
3415 /* truncate listing ? */
3416 if (!nr) {
3417 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3418 entry[1] = 1;
3419 }
3420 goto out;
3421 err_unmap:
3422 kunmap_atomic(kaddr, KM_USER0);
3423 return -errno_NFSERR_IO;
3424 }
3425
3426 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3427 {
3428 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3429 struct kvec *iov = rcvbuf->head;
3430 int hdrlen, len, recvd;
3431 uint32_t *p;
3432 char *kaddr;
3433 int status;
3434
3435 status = decode_op_hdr(xdr, OP_READLINK);
3436 if (status)
3437 return status;
3438
3439 /* Convert length of symlink */
3440 READ_BUF(4);
3441 READ32(len);
3442 if (len >= rcvbuf->page_len || len <= 0) {
3443 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3444 return -ENAMETOOLONG;
3445 }
3446 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3447 recvd = req->rq_rcv_buf.len - hdrlen;
3448 if (recvd < len) {
3449 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3450 "count %u > recvd %u\n", len, recvd);
3451 return -EIO;
3452 }
3453 xdr_read_pages(xdr, len);
3454 /*
3455 * The XDR encode routine has set things up so that
3456 * the link text will be copied directly into the
3457 * buffer. We just have to do overflow-checking,
3458 * and and null-terminate the text (the VFS expects
3459 * null-termination).
3460 */
3461 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3462 kaddr[len+rcvbuf->page_base] = '\0';
3463 kunmap_atomic(kaddr, KM_USER0);
3464 return 0;
3465 }
3466
3467 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3468 {
3469 int status;
3470
3471 status = decode_op_hdr(xdr, OP_REMOVE);
3472 if (status)
3473 goto out;
3474 status = decode_change_info(xdr, cinfo);
3475 out:
3476 return status;
3477 }
3478
3479 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3480 struct nfs4_change_info *new_cinfo)
3481 {
3482 int status;
3483
3484 status = decode_op_hdr(xdr, OP_RENAME);
3485 if (status)
3486 goto out;
3487 if ((status = decode_change_info(xdr, old_cinfo)))
3488 goto out;
3489 status = decode_change_info(xdr, new_cinfo);
3490 out:
3491 return status;
3492 }
3493
3494 static int decode_renew(struct xdr_stream *xdr)
3495 {
3496 return decode_op_hdr(xdr, OP_RENEW);
3497 }
3498
3499 static int
3500 decode_restorefh(struct xdr_stream *xdr)
3501 {
3502 return decode_op_hdr(xdr, OP_RESTOREFH);
3503 }
3504
3505 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3506 size_t *acl_len)
3507 {
3508 uint32_t *savep;
3509 uint32_t attrlen,
3510 bitmap[2] = {0};
3511 struct kvec *iov = req->rq_rcv_buf.head;
3512 int status;
3513
3514 *acl_len = 0;
3515 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3516 goto out;
3517 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3518 goto out;
3519 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3520 goto out;
3521
3522 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3523 return -EIO;
3524 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3525 int hdrlen, recvd;
3526
3527 /* We ignore &savep and don't do consistency checks on
3528 * the attr length. Let userspace figure it out.... */
3529 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3530 recvd = req->rq_rcv_buf.len - hdrlen;
3531 if (attrlen > recvd) {
3532 printk(KERN_WARNING "NFS: server cheating in getattr"
3533 " acl reply: attrlen %u > recvd %u\n",
3534 attrlen, recvd);
3535 return -EINVAL;
3536 }
3537 xdr_read_pages(xdr, attrlen);
3538 *acl_len = attrlen;
3539 } else
3540 status = -EOPNOTSUPP;
3541
3542 out:
3543 return status;
3544 }
3545
3546 static int
3547 decode_savefh(struct xdr_stream *xdr)
3548 {
3549 return decode_op_hdr(xdr, OP_SAVEFH);
3550 }
3551
3552 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3553 {
3554 uint32_t *p;
3555 uint32_t bmlen;
3556 int status;
3557
3558
3559 status = decode_op_hdr(xdr, OP_SETATTR);
3560 if (status)
3561 return status;
3562 READ_BUF(4);
3563 READ32(bmlen);
3564 READ_BUF(bmlen << 2);
3565 return 0;
3566 }
3567
3568 static int decode_setclientid(struct xdr_stream *xdr, struct nfs_client *clp)
3569 {
3570 uint32_t *p;
3571 uint32_t opnum;
3572 int32_t nfserr;
3573
3574 READ_BUF(8);
3575 READ32(opnum);
3576 if (opnum != OP_SETCLIENTID) {
3577 printk(KERN_NOTICE
3578 "nfs4_decode_setclientid: Server returned operation"
3579 " %d\n", opnum);
3580 return -EIO;
3581 }
3582 READ32(nfserr);
3583 if (nfserr == NFS_OK) {
3584 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3585 READ64(clp->cl_clientid);
3586 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3587 } else if (nfserr == NFSERR_CLID_INUSE) {
3588 uint32_t len;
3589
3590 /* skip netid string */
3591 READ_BUF(4);
3592 READ32(len);
3593 READ_BUF(len);
3594
3595 /* skip uaddr string */
3596 READ_BUF(4);
3597 READ32(len);
3598 READ_BUF(len);
3599 return -NFSERR_CLID_INUSE;
3600 } else
3601 return -nfs4_stat_to_errno(nfserr);
3602
3603 return 0;
3604 }
3605
3606 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3607 {
3608 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3609 }
3610
3611 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3612 {
3613 uint32_t *p;
3614 int status;
3615
3616 status = decode_op_hdr(xdr, OP_WRITE);
3617 if (status)
3618 return status;
3619
3620 READ_BUF(16);
3621 READ32(res->count);
3622 READ32(res->verf->committed);
3623 COPYMEM(res->verf->verifier, 8);
3624 return 0;
3625 }
3626
3627 static int decode_delegreturn(struct xdr_stream *xdr)
3628 {
3629 return decode_op_hdr(xdr, OP_DELEGRETURN);
3630 }
3631
3632 /*
3633 * Decode OPEN_DOWNGRADE response
3634 */
3635 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3636 {
3637 struct xdr_stream xdr;
3638 struct compound_hdr hdr;
3639 int status;
3640
3641 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3642 status = decode_compound_hdr(&xdr, &hdr);
3643 if (status)
3644 goto out;
3645 status = decode_putfh(&xdr);
3646 if (status)
3647 goto out;
3648 status = decode_open_downgrade(&xdr, res);
3649 if (status != 0)
3650 goto out;
3651 decode_getfattr(&xdr, res->fattr, res->server);
3652 out:
3653 return status;
3654 }
3655
3656 /*
3657 * END OF "GENERIC" DECODE ROUTINES.
3658 */
3659
3660 /*
3661 * Decode ACCESS response
3662 */
3663 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3664 {
3665 struct xdr_stream xdr;
3666 struct compound_hdr hdr;
3667 int status;
3668
3669 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3670 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3671 goto out;
3672 if ((status = decode_putfh(&xdr)) == 0)
3673 status = decode_access(&xdr, res);
3674 out:
3675 return status;
3676 }
3677
3678 /*
3679 * Decode LOOKUP response
3680 */
3681 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3682 {
3683 struct xdr_stream xdr;
3684 struct compound_hdr hdr;
3685 int status;
3686
3687 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3688 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3689 goto out;
3690 if ((status = decode_putfh(&xdr)) != 0)
3691 goto out;
3692 if ((status = decode_lookup(&xdr)) != 0)
3693 goto out;
3694 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3695 goto out;
3696 status = decode_getfattr(&xdr, res->fattr, res->server);
3697 out:
3698 return status;
3699 }
3700
3701 /*
3702 * Decode LOOKUP_ROOT response
3703 */
3704 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3705 {
3706 struct xdr_stream xdr;
3707 struct compound_hdr hdr;
3708 int status;
3709
3710 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3711 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3712 goto out;
3713 if ((status = decode_putrootfh(&xdr)) != 0)
3714 goto out;
3715 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3716 status = decode_getfattr(&xdr, res->fattr, res->server);
3717 out:
3718 return status;
3719 }
3720
3721 /*
3722 * Decode REMOVE response
3723 */
3724 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_remove_res *res)
3725 {
3726 struct xdr_stream xdr;
3727 struct compound_hdr hdr;
3728 int status;
3729
3730 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3731 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3732 goto out;
3733 if ((status = decode_putfh(&xdr)) != 0)
3734 goto out;
3735 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3736 goto out;
3737 decode_getfattr(&xdr, res->dir_attr, res->server);
3738 out:
3739 return status;
3740 }
3741
3742 /*
3743 * Decode RENAME response
3744 */
3745 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3746 {
3747 struct xdr_stream xdr;
3748 struct compound_hdr hdr;
3749 int status;
3750
3751 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3752 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3753 goto out;
3754 if ((status = decode_putfh(&xdr)) != 0)
3755 goto out;
3756 if ((status = decode_savefh(&xdr)) != 0)
3757 goto out;
3758 if ((status = decode_putfh(&xdr)) != 0)
3759 goto out;
3760 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3761 goto out;
3762 /* Current FH is target directory */
3763 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3764 goto out;
3765 if ((status = decode_restorefh(&xdr)) != 0)
3766 goto out;
3767 decode_getfattr(&xdr, res->old_fattr, res->server);
3768 out:
3769 return status;
3770 }
3771
3772 /*
3773 * Decode LINK response
3774 */
3775 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
3776 {
3777 struct xdr_stream xdr;
3778 struct compound_hdr hdr;
3779 int status;
3780
3781 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3782 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3783 goto out;
3784 if ((status = decode_putfh(&xdr)) != 0)
3785 goto out;
3786 if ((status = decode_savefh(&xdr)) != 0)
3787 goto out;
3788 if ((status = decode_putfh(&xdr)) != 0)
3789 goto out;
3790 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3791 goto out;
3792 /*
3793 * Note order: OP_LINK leaves the directory as the current
3794 * filehandle.
3795 */
3796 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3797 goto out;
3798 if ((status = decode_restorefh(&xdr)) != 0)
3799 goto out;
3800 decode_getfattr(&xdr, res->fattr, res->server);
3801 out:
3802 return status;
3803 }
3804
3805 /*
3806 * Decode CREATE response
3807 */
3808 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3809 {
3810 struct xdr_stream xdr;
3811 struct compound_hdr hdr;
3812 int status;
3813
3814 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3815 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3816 goto out;
3817 if ((status = decode_putfh(&xdr)) != 0)
3818 goto out;
3819 if ((status = decode_savefh(&xdr)) != 0)
3820 goto out;
3821 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3822 goto out;
3823 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3824 goto out;
3825 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3826 goto out;
3827 if ((status = decode_restorefh(&xdr)) != 0)
3828 goto out;
3829 decode_getfattr(&xdr, res->dir_fattr, res->server);
3830 out:
3831 return status;
3832 }
3833
3834 /*
3835 * Decode SYMLINK response
3836 */
3837 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3838 {
3839 return nfs4_xdr_dec_create(rqstp, p, res);
3840 }
3841
3842 /*
3843 * Decode GETATTR response
3844 */
3845 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3846 {
3847 struct xdr_stream xdr;
3848 struct compound_hdr hdr;
3849 int status;
3850
3851 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3852 status = decode_compound_hdr(&xdr, &hdr);
3853 if (status)
3854 goto out;
3855 status = decode_putfh(&xdr);
3856 if (status)
3857 goto out;
3858 status = decode_getfattr(&xdr, res->fattr, res->server);
3859 out:
3860 return status;
3861
3862 }
3863
3864 /*
3865 * Encode an SETACL request
3866 */
3867 static int
3868 nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3869 {
3870 struct xdr_stream xdr;
3871 struct compound_hdr hdr = {
3872 .nops = 2,
3873 };
3874 int status;
3875
3876 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3877 encode_compound_hdr(&xdr, &hdr);
3878 status = encode_putfh(&xdr, args->fh);
3879 if (status)
3880 goto out;
3881 status = encode_setacl(&xdr, args);
3882 out:
3883 return status;
3884 }
3885 /*
3886 * Decode SETACL response
3887 */
3888 static int
3889 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3890 {
3891 struct xdr_stream xdr;
3892 struct compound_hdr hdr;
3893 int status;
3894
3895 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3896 status = decode_compound_hdr(&xdr, &hdr);
3897 if (status)
3898 goto out;
3899 status = decode_putfh(&xdr);
3900 if (status)
3901 goto out;
3902 status = decode_setattr(&xdr, res);
3903 out:
3904 return status;
3905 }
3906
3907 /*
3908 * Decode GETACL response
3909 */
3910 static int
3911 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3912 {
3913 struct xdr_stream xdr;
3914 struct compound_hdr hdr;
3915 int status;
3916
3917 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3918 status = decode_compound_hdr(&xdr, &hdr);
3919 if (status)
3920 goto out;
3921 status = decode_putfh(&xdr);
3922 if (status)
3923 goto out;
3924 status = decode_getacl(&xdr, rqstp, acl_len);
3925
3926 out:
3927 return status;
3928 }
3929
3930 /*
3931 * Decode CLOSE response
3932 */
3933 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3934 {
3935 struct xdr_stream xdr;
3936 struct compound_hdr hdr;
3937 int status;
3938
3939 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3940 status = decode_compound_hdr(&xdr, &hdr);
3941 if (status)
3942 goto out;
3943 status = decode_putfh(&xdr);
3944 if (status)
3945 goto out;
3946 status = decode_close(&xdr, res);
3947 if (status != 0)
3948 goto out;
3949 /*
3950 * Note: Server may do delete on close for this file
3951 * in which case the getattr call will fail with
3952 * an ESTALE error. Shouldn't be a problem,
3953 * though, since fattr->valid will remain unset.
3954 */
3955 decode_getfattr(&xdr, res->fattr, res->server);
3956 out:
3957 return status;
3958 }
3959
3960 /*
3961 * Decode OPEN response
3962 */
3963 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3964 {
3965 struct xdr_stream xdr;
3966 struct compound_hdr hdr;
3967 int status;
3968
3969 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3970 status = decode_compound_hdr(&xdr, &hdr);
3971 if (status)
3972 goto out;
3973 status = decode_putfh(&xdr);
3974 if (status)
3975 goto out;
3976 status = decode_savefh(&xdr);
3977 if (status)
3978 goto out;
3979 status = decode_open(&xdr, res);
3980 if (status)
3981 goto out;
3982 status = decode_getfh(&xdr, &res->fh);
3983 if (status)
3984 goto out;
3985 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3986 goto out;
3987 if ((status = decode_restorefh(&xdr)) != 0)
3988 goto out;
3989 decode_getfattr(&xdr, res->dir_attr, res->server);
3990 out:
3991 return status;
3992 }
3993
3994 /*
3995 * Decode OPEN_CONFIRM response
3996 */
3997 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3998 {
3999 struct xdr_stream xdr;
4000 struct compound_hdr hdr;
4001 int status;
4002
4003 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4004 status = decode_compound_hdr(&xdr, &hdr);
4005 if (status)
4006 goto out;
4007 status = decode_putfh(&xdr);
4008 if (status)
4009 goto out;
4010 status = decode_open_confirm(&xdr, res);
4011 out:
4012 return status;
4013 }
4014
4015 /*
4016 * Decode OPEN response
4017 */
4018 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
4019 {
4020 struct xdr_stream xdr;
4021 struct compound_hdr hdr;
4022 int status;
4023
4024 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4025 status = decode_compound_hdr(&xdr, &hdr);
4026 if (status)
4027 goto out;
4028 status = decode_putfh(&xdr);
4029 if (status)
4030 goto out;
4031 status = decode_open(&xdr, res);
4032 if (status)
4033 goto out;
4034 decode_getfattr(&xdr, res->f_attr, res->server);
4035 out:
4036 return status;
4037 }
4038
4039 /*
4040 * Decode SETATTR response
4041 */
4042 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
4043 {
4044 struct xdr_stream xdr;
4045 struct compound_hdr hdr;
4046 int status;
4047
4048 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4049 status = decode_compound_hdr(&xdr, &hdr);
4050 if (status)
4051 goto out;
4052 status = decode_putfh(&xdr);
4053 if (status)
4054 goto out;
4055 status = decode_setattr(&xdr, res);
4056 if (status)
4057 goto out;
4058 status = decode_getfattr(&xdr, res->fattr, res->server);
4059 if (status == NFS4ERR_DELAY)
4060 status = 0;
4061 out:
4062 return status;
4063 }
4064
4065 /*
4066 * Decode LOCK response
4067 */
4068 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lock_res *res)
4069 {
4070 struct xdr_stream xdr;
4071 struct compound_hdr hdr;
4072 int status;
4073
4074 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4075 status = decode_compound_hdr(&xdr, &hdr);
4076 if (status)
4077 goto out;
4078 status = decode_putfh(&xdr);
4079 if (status)
4080 goto out;
4081 status = decode_lock(&xdr, res);
4082 out:
4083 return status;
4084 }
4085
4086 /*
4087 * Decode LOCKT response
4088 */
4089 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockt_res *res)
4090 {
4091 struct xdr_stream xdr;
4092 struct compound_hdr hdr;
4093 int status;
4094
4095 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4096 status = decode_compound_hdr(&xdr, &hdr);
4097 if (status)
4098 goto out;
4099 status = decode_putfh(&xdr);
4100 if (status)
4101 goto out;
4102 status = decode_lockt(&xdr, res);
4103 out:
4104 return status;
4105 }
4106
4107 /*
4108 * Decode LOCKU response
4109 */
4110 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_locku_res *res)
4111 {
4112 struct xdr_stream xdr;
4113 struct compound_hdr hdr;
4114 int status;
4115
4116 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4117 status = decode_compound_hdr(&xdr, &hdr);
4118 if (status)
4119 goto out;
4120 status = decode_putfh(&xdr);
4121 if (status)
4122 goto out;
4123 status = decode_locku(&xdr, res);
4124 out:
4125 return status;
4126 }
4127
4128 /*
4129 * Decode READLINK response
4130 */
4131 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
4132 {
4133 struct xdr_stream xdr;
4134 struct compound_hdr hdr;
4135 int status;
4136
4137 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4138 status = decode_compound_hdr(&xdr, &hdr);
4139 if (status)
4140 goto out;
4141 status = decode_putfh(&xdr);
4142 if (status)
4143 goto out;
4144 status = decode_readlink(&xdr, rqstp);
4145 out:
4146 return status;
4147 }
4148
4149 /*
4150 * Decode READDIR response
4151 */
4152 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
4153 {
4154 struct xdr_stream xdr;
4155 struct compound_hdr hdr;
4156 int status;
4157
4158 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4159 status = decode_compound_hdr(&xdr, &hdr);
4160 if (status)
4161 goto out;
4162 status = decode_putfh(&xdr);
4163 if (status)
4164 goto out;
4165 status = decode_readdir(&xdr, rqstp, res);
4166 out:
4167 return status;
4168 }
4169
4170 /*
4171 * Decode Read response
4172 */
4173 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
4174 {
4175 struct xdr_stream xdr;
4176 struct compound_hdr hdr;
4177 int status;
4178
4179 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4180 status = decode_compound_hdr(&xdr, &hdr);
4181 if (status)
4182 goto out;
4183 status = decode_putfh(&xdr);
4184 if (status)
4185 goto out;
4186 status = decode_read(&xdr, rqstp, res);
4187 if (!status)
4188 status = res->count;
4189 out:
4190 return status;
4191 }
4192
4193 /*
4194 * Decode WRITE response
4195 */
4196 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4197 {
4198 struct xdr_stream xdr;
4199 struct compound_hdr hdr;
4200 int status;
4201
4202 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4203 status = decode_compound_hdr(&xdr, &hdr);
4204 if (status)
4205 goto out;
4206 status = decode_putfh(&xdr);
4207 if (status)
4208 goto out;
4209 status = decode_write(&xdr, res);
4210 if (status)
4211 goto out;
4212 decode_getfattr(&xdr, res->fattr, res->server);
4213 if (!status)
4214 status = res->count;
4215 out:
4216 return status;
4217 }
4218
4219 /*
4220 * Decode COMMIT response
4221 */
4222 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4223 {
4224 struct xdr_stream xdr;
4225 struct compound_hdr hdr;
4226 int status;
4227
4228 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4229 status = decode_compound_hdr(&xdr, &hdr);
4230 if (status)
4231 goto out;
4232 status = decode_putfh(&xdr);
4233 if (status)
4234 goto out;
4235 status = decode_commit(&xdr, res);
4236 if (status)
4237 goto out;
4238 decode_getfattr(&xdr, res->fattr, res->server);
4239 out:
4240 return status;
4241 }
4242
4243 /*
4244 * FSINFO request
4245 */
4246 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4247 {
4248 struct xdr_stream xdr;
4249 struct compound_hdr hdr;
4250 int status;
4251
4252 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4253 status = decode_compound_hdr(&xdr, &hdr);
4254 if (!status)
4255 status = decode_putfh(&xdr);
4256 if (!status)
4257 status = decode_fsinfo(&xdr, fsinfo);
4258 if (!status)
4259 status = -nfs4_stat_to_errno(hdr.status);
4260 return status;
4261 }
4262
4263 /*
4264 * PATHCONF request
4265 */
4266 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4267 {
4268 struct xdr_stream xdr;
4269 struct compound_hdr hdr;
4270 int status;
4271
4272 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4273 status = decode_compound_hdr(&xdr, &hdr);
4274 if (!status)
4275 status = decode_putfh(&xdr);
4276 if (!status)
4277 status = decode_pathconf(&xdr, pathconf);
4278 return status;
4279 }
4280
4281 /*
4282 * STATFS request
4283 */
4284 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4285 {
4286 struct xdr_stream xdr;
4287 struct compound_hdr hdr;
4288 int status;
4289
4290 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4291 status = decode_compound_hdr(&xdr, &hdr);
4292 if (!status)
4293 status = decode_putfh(&xdr);
4294 if (!status)
4295 status = decode_statfs(&xdr, fsstat);
4296 return status;
4297 }
4298
4299 /*
4300 * GETATTR_BITMAP request
4301 */
4302 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4303 {
4304 struct xdr_stream xdr;
4305 struct compound_hdr hdr;
4306 int status;
4307
4308 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4309 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4310 goto out;
4311 if ((status = decode_putfh(&xdr)) != 0)
4312 goto out;
4313 status = decode_server_caps(&xdr, res);
4314 out:
4315 return status;
4316 }
4317
4318 /*
4319 * Decode RENEW response
4320 */
4321 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4322 {
4323 struct xdr_stream xdr;
4324 struct compound_hdr hdr;
4325 int status;
4326
4327 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4328 status = decode_compound_hdr(&xdr, &hdr);
4329 if (!status)
4330 status = decode_renew(&xdr);
4331 return status;
4332 }
4333
4334 /*
4335 * a SETCLIENTID request
4336 */
4337 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4338 struct nfs_client *clp)
4339 {
4340 struct xdr_stream xdr;
4341 struct compound_hdr hdr;
4342 int status;
4343
4344 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4345 status = decode_compound_hdr(&xdr, &hdr);
4346 if (!status)
4347 status = decode_setclientid(&xdr, clp);
4348 if (!status)
4349 status = -nfs4_stat_to_errno(hdr.status);
4350 return status;
4351 }
4352
4353 /*
4354 * a SETCLIENTID_CONFIRM request
4355 */
4356 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4357 {
4358 struct xdr_stream xdr;
4359 struct compound_hdr hdr;
4360 int status;
4361
4362 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4363 status = decode_compound_hdr(&xdr, &hdr);
4364 if (!status)
4365 status = decode_setclientid_confirm(&xdr);
4366 if (!status)
4367 status = decode_putrootfh(&xdr);
4368 if (!status)
4369 status = decode_fsinfo(&xdr, fsinfo);
4370 if (!status)
4371 status = -nfs4_stat_to_errno(hdr.status);
4372 return status;
4373 }
4374
4375 /*
4376 * DELEGRETURN request
4377 */
4378 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_delegreturnres *res)
4379 {
4380 struct xdr_stream xdr;
4381 struct compound_hdr hdr;
4382 int status;
4383
4384 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4385 status = decode_compound_hdr(&xdr, &hdr);
4386 if (status != 0)
4387 goto out;
4388 status = decode_putfh(&xdr);
4389 if (status != 0)
4390 goto out;
4391 status = decode_delegreturn(&xdr);
4392 decode_getfattr(&xdr, res->fattr, res->server);
4393 out:
4394 return status;
4395 }
4396
4397 /*
4398 * FS_LOCATIONS request
4399 */
4400 static int nfs4_xdr_dec_fs_locations(struct rpc_rqst *req, uint32_t *p, struct nfs4_fs_locations *res)
4401 {
4402 struct xdr_stream xdr;
4403 struct compound_hdr hdr;
4404 int status;
4405
4406 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4407 status = decode_compound_hdr(&xdr, &hdr);
4408 if (status != 0)
4409 goto out;
4410 if ((status = decode_putfh(&xdr)) != 0)
4411 goto out;
4412 if ((status = decode_lookup(&xdr)) != 0)
4413 goto out;
4414 xdr_enter_page(&xdr, PAGE_SIZE);
4415 status = decode_getfattr(&xdr, &res->fattr, res->server);
4416 out:
4417 return status;
4418 }
4419
4420 uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4421 {
4422 uint32_t bitmap[2] = {0};
4423 uint32_t len;
4424
4425 if (!*p++) {
4426 if (!*p)
4427 return ERR_PTR(-EAGAIN);
4428 entry->eof = 1;
4429 return ERR_PTR(-EBADCOOKIE);
4430 }
4431
4432 entry->prev_cookie = entry->cookie;
4433 p = xdr_decode_hyper(p, &entry->cookie);
4434 entry->len = ntohl(*p++);
4435 entry->name = (const char *) p;
4436 p += XDR_QUADLEN(entry->len);
4437
4438 /*
4439 * In case the server doesn't return an inode number,
4440 * we fake one here. (We don't use inode number 0,
4441 * since glibc seems to choke on it...)
4442 */
4443 entry->ino = 1;
4444
4445 len = ntohl(*p++); /* bitmap length */
4446 if (len-- > 0) {
4447 bitmap[0] = ntohl(*p++);
4448 if (len-- > 0) {
4449 bitmap[1] = ntohl(*p++);
4450 p += len;
4451 }
4452 }
4453 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4454 if (len > 0) {
4455 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4456 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4457 /* Ignore the return value of rdattr_error for now */
4458 p++;
4459 len--;
4460 }
4461 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4462 xdr_decode_hyper(p, &entry->ino);
4463 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4464 xdr_decode_hyper(p, &entry->ino);
4465 p += len;
4466 }
4467
4468 entry->eof = !p[0] && p[1];
4469 return p;
4470 }
4471
4472 /*
4473 * We need to translate between nfs status return values and
4474 * the local errno values which may not be the same.
4475 */
4476 static struct {
4477 int stat;
4478 int errno;
4479 } nfs_errtbl[] = {
4480 { NFS4_OK, 0 },
4481 { NFS4ERR_PERM, EPERM },
4482 { NFS4ERR_NOENT, ENOENT },
4483 { NFS4ERR_IO, errno_NFSERR_IO },
4484 { NFS4ERR_NXIO, ENXIO },
4485 { NFS4ERR_ACCESS, EACCES },
4486 { NFS4ERR_EXIST, EEXIST },
4487 { NFS4ERR_XDEV, EXDEV },
4488 { NFS4ERR_NOTDIR, ENOTDIR },
4489 { NFS4ERR_ISDIR, EISDIR },
4490 { NFS4ERR_INVAL, EINVAL },
4491 { NFS4ERR_FBIG, EFBIG },
4492 { NFS4ERR_NOSPC, ENOSPC },
4493 { NFS4ERR_ROFS, EROFS },
4494 { NFS4ERR_MLINK, EMLINK },
4495 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4496 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4497 { NFS4ERR_DQUOT, EDQUOT },
4498 { NFS4ERR_STALE, ESTALE },
4499 { NFS4ERR_BADHANDLE, EBADHANDLE },
4500 { NFS4ERR_BADOWNER, EINVAL },
4501 { NFS4ERR_BADNAME, EINVAL },
4502 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4503 { NFS4ERR_NOTSUPP, ENOTSUPP },
4504 { NFS4ERR_TOOSMALL, ETOOSMALL },
4505 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4506 { NFS4ERR_BADTYPE, EBADTYPE },
4507 { NFS4ERR_LOCKED, EAGAIN },
4508 { NFS4ERR_RESOURCE, EREMOTEIO },
4509 { NFS4ERR_SYMLINK, ELOOP },
4510 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4511 { NFS4ERR_DEADLOCK, EDEADLK },
4512 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4513 * to be handled by a
4514 * middle-layer.
4515 */
4516 { -1, EIO }
4517 };
4518
4519 /*
4520 * Convert an NFS error code to a local one.
4521 * This one is used jointly by NFSv2 and NFSv3.
4522 */
4523 static int
4524 nfs4_stat_to_errno(int stat)
4525 {
4526 int i;
4527 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4528 if (nfs_errtbl[i].stat == stat)
4529 return nfs_errtbl[i].errno;
4530 }
4531 if (stat <= 10000 || stat > 10100) {
4532 /* The server is looney tunes. */
4533 return ESERVERFAULT;
4534 }
4535 /* If we cannot translate the error, the recovery routines should
4536 * handle it.
4537 * Note: remaining NFSv4 error codes have values > 10000, so should
4538 * not conflict with native Linux error codes.
4539 */
4540 return stat;
4541 }
4542
4543 #ifndef MAX
4544 # define MAX(a, b) (((a) > (b))? (a) : (b))
4545 #endif
4546
4547 #define PROC(proc, argtype, restype) \
4548 [NFSPROC4_CLNT_##proc] = { \
4549 .p_proc = NFSPROC4_COMPOUND, \
4550 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4551 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4552 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4553 .p_statidx = NFSPROC4_CLNT_##proc, \
4554 .p_name = #proc, \
4555 }
4556
4557 struct rpc_procinfo nfs4_procedures[] = {
4558 PROC(READ, enc_read, dec_read),
4559 PROC(WRITE, enc_write, dec_write),
4560 PROC(COMMIT, enc_commit, dec_commit),
4561 PROC(OPEN, enc_open, dec_open),
4562 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4563 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4564 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4565 PROC(CLOSE, enc_close, dec_close),
4566 PROC(SETATTR, enc_setattr, dec_setattr),
4567 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4568 PROC(RENEW, enc_renew, dec_renew),
4569 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4570 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4571 PROC(LOCK, enc_lock, dec_lock),
4572 PROC(LOCKT, enc_lockt, dec_lockt),
4573 PROC(LOCKU, enc_locku, dec_locku),
4574 PROC(ACCESS, enc_access, dec_access),
4575 PROC(GETATTR, enc_getattr, dec_getattr),
4576 PROC(LOOKUP, enc_lookup, dec_lookup),
4577 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4578 PROC(REMOVE, enc_remove, dec_remove),
4579 PROC(RENAME, enc_rename, dec_rename),
4580 PROC(LINK, enc_link, dec_link),
4581 PROC(SYMLINK, enc_symlink, dec_symlink),
4582 PROC(CREATE, enc_create, dec_create),
4583 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4584 PROC(STATFS, enc_statfs, dec_statfs),
4585 PROC(READLINK, enc_readlink, dec_readlink),
4586 PROC(READDIR, enc_readdir, dec_readdir),
4587 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4588 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4589 PROC(GETACL, enc_getacl, dec_getacl),
4590 PROC(SETACL, enc_setacl, dec_setacl),
4591 PROC(FS_LOCATIONS, enc_fs_locations, dec_fs_locations),
4592 };
4593
4594 struct rpc_version nfs_version4 = {
4595 .number = 4,
4596 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4597 .procs = nfs4_procedures
4598 };
4599
4600 /*
4601 * Local variables:
4602 * c-basic-offset: 8
4603 * End:
4604 */
Linux kernel - Deliverables
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