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[PATCH] fs: Use ARRAY_SIZE macro
[linux-2.6/mini2440.git] / fs / nfs / nfs4xdr.c
blob0a1bd36a4837ca87b494b45a1233c42fc7b970c5
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 nfs_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 nfs4_path_maxsz + \
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
415 static struct {
416 unsigned int mode;
417 unsigned int nfs2type;
418 } nfs_type2fmt[] = {
419 { 0, NFNON },
420 { S_IFREG, NFREG },
421 { S_IFDIR, NFDIR },
422 { S_IFBLK, NFBLK },
423 { S_IFCHR, NFCHR },
424 { S_IFLNK, NFLNK },
425 { S_IFSOCK, NFSOCK },
426 { S_IFIFO, NFFIFO },
427 { 0, NFNON },
428 { 0, NFNON },
429 };
430
431 struct compound_hdr {
432 int32_t status;
433 uint32_t nops;
434 uint32_t taglen;
435 char * tag;
436 };
437
438 /*
439 * START OF "GENERIC" ENCODE ROUTINES.
440 * These may look a little ugly since they are imported from a "generic"
441 * set of XDR encode/decode routines which are intended to be shared by
442 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
443 *
444 * If the pain of reading these is too great, it should be a straightforward
445 * task to translate them into Linux-specific versions which are more
446 * consistent with the style used in NFSv2/v3...
447 */
448 #define WRITE32(n) *p++ = htonl(n)
449 #define WRITE64(n) do { \
450 *p++ = htonl((uint32_t)((n) >> 32)); \
451 *p++ = htonl((uint32_t)(n)); \
452 } while (0)
453 #define WRITEMEM(ptr,nbytes) do { \
454 p = xdr_encode_opaque_fixed(p, ptr, nbytes); \
455 } while (0)
456
457 #define RESERVE_SPACE(nbytes) do { \
458 p = xdr_reserve_space(xdr, nbytes); \
459 if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \
460 BUG_ON(!p); \
461 } while (0)
462
463 static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
464 {
465 uint32_t *p;
466
467 p = xdr_reserve_space(xdr, 4 + len);
468 BUG_ON(p == NULL);
469 xdr_encode_opaque(p, str, len);
470 }
471
472 static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
473 {
474 uint32_t *p;
475
476 dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag);
477 BUG_ON(hdr->taglen > NFS4_MAXTAGLEN);
478 RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2));
479 WRITE32(hdr->taglen);
480 WRITEMEM(hdr->tag, hdr->taglen);
481 WRITE32(NFS4_MINOR_VERSION);
482 WRITE32(hdr->nops);
483 return 0;
484 }
485
486 static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf)
487 {
488 uint32_t *p;
489
490 p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE);
491 BUG_ON(p == NULL);
492 xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE);
493 }
494
495 static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server)
496 {
497 char owner_name[IDMAP_NAMESZ];
498 char owner_group[IDMAP_NAMESZ];
499 int owner_namelen = 0;
500 int owner_grouplen = 0;
501 uint32_t *p;
502 uint32_t *q;
503 int len;
504 uint32_t bmval0 = 0;
505 uint32_t bmval1 = 0;
506 int status;
507
508 /*
509 * We reserve enough space to write the entire attribute buffer at once.
510 * In the worst-case, this would be
511 * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime)
512 * = 36 bytes, plus any contribution from variable-length fields
513 * such as owner/group.
514 */
515 len = 16;
516
517 /* Sigh */
518 if (iap->ia_valid & ATTR_SIZE)
519 len += 8;
520 if (iap->ia_valid & ATTR_MODE)
521 len += 4;
522 if (iap->ia_valid & ATTR_UID) {
523 owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name);
524 if (owner_namelen < 0) {
525 printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n",
526 iap->ia_uid);
527 /* XXX */
528 strcpy(owner_name, "nobody");
529 owner_namelen = sizeof("nobody") - 1;
530 /* goto out; */
531 }
532 len += 4 + (XDR_QUADLEN(owner_namelen) << 2);
533 }
534 if (iap->ia_valid & ATTR_GID) {
535 owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group);
536 if (owner_grouplen < 0) {
537 printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n",
538 iap->ia_gid);
539 strcpy(owner_group, "nobody");
540 owner_grouplen = sizeof("nobody") - 1;
541 /* goto out; */
542 }
543 len += 4 + (XDR_QUADLEN(owner_grouplen) << 2);
544 }
545 if (iap->ia_valid & ATTR_ATIME_SET)
546 len += 16;
547 else if (iap->ia_valid & ATTR_ATIME)
548 len += 4;
549 if (iap->ia_valid & ATTR_MTIME_SET)
550 len += 16;
551 else if (iap->ia_valid & ATTR_MTIME)
552 len += 4;
553 RESERVE_SPACE(len);
554
555 /*
556 * We write the bitmap length now, but leave the bitmap and the attribute
557 * buffer length to be backfilled at the end of this routine.
558 */
559 WRITE32(2);
560 q = p;
561 p += 3;
562
563 if (iap->ia_valid & ATTR_SIZE) {
564 bmval0 |= FATTR4_WORD0_SIZE;
565 WRITE64(iap->ia_size);
566 }
567 if (iap->ia_valid & ATTR_MODE) {
568 bmval1 |= FATTR4_WORD1_MODE;
569 WRITE32(iap->ia_mode & S_IALLUGO);
570 }
571 if (iap->ia_valid & ATTR_UID) {
572 bmval1 |= FATTR4_WORD1_OWNER;
573 WRITE32(owner_namelen);
574 WRITEMEM(owner_name, owner_namelen);
575 }
576 if (iap->ia_valid & ATTR_GID) {
577 bmval1 |= FATTR4_WORD1_OWNER_GROUP;
578 WRITE32(owner_grouplen);
579 WRITEMEM(owner_group, owner_grouplen);
580 }
581 if (iap->ia_valid & ATTR_ATIME_SET) {
582 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
583 WRITE32(NFS4_SET_TO_CLIENT_TIME);
584 WRITE32(0);
585 WRITE32(iap->ia_mtime.tv_sec);
586 WRITE32(iap->ia_mtime.tv_nsec);
587 }
588 else if (iap->ia_valid & ATTR_ATIME) {
589 bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET;
590 WRITE32(NFS4_SET_TO_SERVER_TIME);
591 }
592 if (iap->ia_valid & ATTR_MTIME_SET) {
593 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
594 WRITE32(NFS4_SET_TO_CLIENT_TIME);
595 WRITE32(0);
596 WRITE32(iap->ia_mtime.tv_sec);
597 WRITE32(iap->ia_mtime.tv_nsec);
598 }
599 else if (iap->ia_valid & ATTR_MTIME) {
600 bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET;
601 WRITE32(NFS4_SET_TO_SERVER_TIME);
602 }
603
604 /*
605 * Now we backfill the bitmap and the attribute buffer length.
606 */
607 if (len != ((char *)p - (char *)q) + 4) {
608 printk ("encode_attr: Attr length calculation error! %u != %Zu\n",
609 len, ((char *)p - (char *)q) + 4);
610 BUG();
611 }
612 len = (char *)p - (char *)q - 12;
613 *q++ = htonl(bmval0);
614 *q++ = htonl(bmval1);
615 *q++ = htonl(len);
616
617 status = 0;
618 /* out: */
619 return status;
620 }
621
622 static int encode_access(struct xdr_stream *xdr, u32 access)
623 {
624 uint32_t *p;
625
626 RESERVE_SPACE(8);
627 WRITE32(OP_ACCESS);
628 WRITE32(access);
629
630 return 0;
631 }
632
633 static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
634 {
635 uint32_t *p;
636
637 RESERVE_SPACE(8+sizeof(arg->stateid->data));
638 WRITE32(OP_CLOSE);
639 WRITE32(arg->seqid->sequence->counter);
640 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
641
642 return 0;
643 }
644
645 static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args)
646 {
647 uint32_t *p;
648
649 RESERVE_SPACE(16);
650 WRITE32(OP_COMMIT);
651 WRITE64(args->offset);
652 WRITE32(args->count);
653
654 return 0;
655 }
656
657 static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create)
658 {
659 uint32_t *p;
660
661 RESERVE_SPACE(8);
662 WRITE32(OP_CREATE);
663 WRITE32(create->ftype);
664
665 switch (create->ftype) {
666 case NF4LNK:
667 RESERVE_SPACE(4 + create->u.symlink->len);
668 WRITE32(create->u.symlink->len);
669 WRITEMEM(create->u.symlink->name, create->u.symlink->len);
670 break;
671
672 case NF4BLK: case NF4CHR:
673 RESERVE_SPACE(8);
674 WRITE32(create->u.device.specdata1);
675 WRITE32(create->u.device.specdata2);
676 break;
677
678 default:
679 break;
680 }
681
682 RESERVE_SPACE(4 + create->name->len);
683 WRITE32(create->name->len);
684 WRITEMEM(create->name->name, create->name->len);
685
686 return encode_attrs(xdr, create->attrs, create->server);
687 }
688
689 static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap)
690 {
691 uint32_t *p;
692
693 RESERVE_SPACE(12);
694 WRITE32(OP_GETATTR);
695 WRITE32(1);
696 WRITE32(bitmap);
697 return 0;
698 }
699
700 static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1)
701 {
702 uint32_t *p;
703
704 RESERVE_SPACE(16);
705 WRITE32(OP_GETATTR);
706 WRITE32(2);
707 WRITE32(bm0);
708 WRITE32(bm1);
709 return 0;
710 }
711
712 static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask)
713 {
714 return encode_getattr_two(xdr,
715 bitmask[0] & nfs4_fattr_bitmap[0],
716 bitmask[1] & nfs4_fattr_bitmap[1]);
717 }
718
719 static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask)
720 {
721 return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0],
722 bitmask[1] & nfs4_fsinfo_bitmap[1]);
723 }
724
725 static int encode_getfh(struct xdr_stream *xdr)
726 {
727 uint32_t *p;
728
729 RESERVE_SPACE(4);
730 WRITE32(OP_GETFH);
731
732 return 0;
733 }
734
735 static int encode_link(struct xdr_stream *xdr, const struct qstr *name)
736 {
737 uint32_t *p;
738
739 RESERVE_SPACE(8 + name->len);
740 WRITE32(OP_LINK);
741 WRITE32(name->len);
742 WRITEMEM(name->name, name->len);
743
744 return 0;
745 }
746
747 static inline int nfs4_lock_type(struct file_lock *fl, int block)
748 {
749 if ((fl->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) == F_RDLCK)
750 return block ? NFS4_READW_LT : NFS4_READ_LT;
751 return block ? NFS4_WRITEW_LT : NFS4_WRITE_LT;
752 }
753
754 static inline uint64_t nfs4_lock_length(struct file_lock *fl)
755 {
756 if (fl->fl_end == OFFSET_MAX)
757 return ~(uint64_t)0;
758 return fl->fl_end - fl->fl_start + 1;
759 }
760
761 /*
762 * opcode,type,reclaim,offset,length,new_lock_owner = 32
763 * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40
764 */
765 static int encode_lock(struct xdr_stream *xdr, const struct nfs_lock_args *args)
766 {
767 uint32_t *p;
768
769 RESERVE_SPACE(32);
770 WRITE32(OP_LOCK);
771 WRITE32(nfs4_lock_type(args->fl, args->block));
772 WRITE32(args->reclaim);
773 WRITE64(args->fl->fl_start);
774 WRITE64(nfs4_lock_length(args->fl));
775 WRITE32(args->new_lock_owner);
776 if (args->new_lock_owner){
777 RESERVE_SPACE(40);
778 WRITE32(args->open_seqid->sequence->counter);
779 WRITEMEM(args->open_stateid->data, sizeof(args->open_stateid->data));
780 WRITE32(args->lock_seqid->sequence->counter);
781 WRITE64(args->lock_owner.clientid);
782 WRITE32(4);
783 WRITE32(args->lock_owner.id);
784 }
785 else {
786 RESERVE_SPACE(20);
787 WRITEMEM(args->lock_stateid->data, sizeof(args->lock_stateid->data));
788 WRITE32(args->lock_seqid->sequence->counter);
789 }
790
791 return 0;
792 }
793
794 static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockt_args *args)
795 {
796 uint32_t *p;
797
798 RESERVE_SPACE(40);
799 WRITE32(OP_LOCKT);
800 WRITE32(nfs4_lock_type(args->fl, 0));
801 WRITE64(args->fl->fl_start);
802 WRITE64(nfs4_lock_length(args->fl));
803 WRITE64(args->lock_owner.clientid);
804 WRITE32(4);
805 WRITE32(args->lock_owner.id);
806
807 return 0;
808 }
809
810 static int encode_locku(struct xdr_stream *xdr, const struct nfs_locku_args *args)
811 {
812 uint32_t *p;
813
814 RESERVE_SPACE(44);
815 WRITE32(OP_LOCKU);
816 WRITE32(nfs4_lock_type(args->fl, 0));
817 WRITE32(args->seqid->sequence->counter);
818 WRITEMEM(args->stateid->data, sizeof(args->stateid->data));
819 WRITE64(args->fl->fl_start);
820 WRITE64(nfs4_lock_length(args->fl));
821
822 return 0;
823 }
824
825 static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name)
826 {
827 int len = name->len;
828 uint32_t *p;
829
830 RESERVE_SPACE(8 + len);
831 WRITE32(OP_LOOKUP);
832 WRITE32(len);
833 WRITEMEM(name->name, len);
834
835 return 0;
836 }
837
838 static void encode_share_access(struct xdr_stream *xdr, int open_flags)
839 {
840 uint32_t *p;
841
842 RESERVE_SPACE(8);
843 switch (open_flags & (FMODE_READ|FMODE_WRITE)) {
844 case FMODE_READ:
845 WRITE32(NFS4_SHARE_ACCESS_READ);
846 break;
847 case FMODE_WRITE:
848 WRITE32(NFS4_SHARE_ACCESS_WRITE);
849 break;
850 case FMODE_READ|FMODE_WRITE:
851 WRITE32(NFS4_SHARE_ACCESS_BOTH);
852 break;
853 default:
854 BUG();
855 }
856 WRITE32(0); /* for linux, share_deny = 0 always */
857 }
858
859 static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg)
860 {
861 uint32_t *p;
862 /*
863 * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4,
864 * owner 4 = 32
865 */
866 RESERVE_SPACE(8);
867 WRITE32(OP_OPEN);
868 WRITE32(arg->seqid->sequence->counter);
869 encode_share_access(xdr, arg->open_flags);
870 RESERVE_SPACE(16);
871 WRITE64(arg->clientid);
872 WRITE32(4);
873 WRITE32(arg->id);
874 }
875
876 static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg)
877 {
878 uint32_t *p;
879
880 RESERVE_SPACE(4);
881 switch(arg->open_flags & O_EXCL) {
882 case 0:
883 WRITE32(NFS4_CREATE_UNCHECKED);
884 encode_attrs(xdr, arg->u.attrs, arg->server);
885 break;
886 default:
887 WRITE32(NFS4_CREATE_EXCLUSIVE);
888 encode_nfs4_verifier(xdr, &arg->u.verifier);
889 }
890 }
891
892 static void encode_opentype(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_CREAT) {
898 case 0:
899 WRITE32(NFS4_OPEN_NOCREATE);
900 break;
901 default:
902 BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL);
903 WRITE32(NFS4_OPEN_CREATE);
904 encode_createmode(xdr, arg);
905 }
906 }
907
908 static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type)
909 {
910 uint32_t *p;
911
912 RESERVE_SPACE(4);
913 switch (delegation_type) {
914 case 0:
915 WRITE32(NFS4_OPEN_DELEGATE_NONE);
916 break;
917 case FMODE_READ:
918 WRITE32(NFS4_OPEN_DELEGATE_READ);
919 break;
920 case FMODE_WRITE|FMODE_READ:
921 WRITE32(NFS4_OPEN_DELEGATE_WRITE);
922 break;
923 default:
924 BUG();
925 }
926 }
927
928 static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name)
929 {
930 uint32_t *p;
931
932 RESERVE_SPACE(4);
933 WRITE32(NFS4_OPEN_CLAIM_NULL);
934 encode_string(xdr, name->len, name->name);
935 }
936
937 static inline void encode_claim_previous(struct xdr_stream *xdr, int type)
938 {
939 uint32_t *p;
940
941 RESERVE_SPACE(4);
942 WRITE32(NFS4_OPEN_CLAIM_PREVIOUS);
943 encode_delegation_type(xdr, type);
944 }
945
946 static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid)
947 {
948 uint32_t *p;
949
950 RESERVE_SPACE(4+sizeof(stateid->data));
951 WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR);
952 WRITEMEM(stateid->data, sizeof(stateid->data));
953 encode_string(xdr, name->len, name->name);
954 }
955
956 static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg)
957 {
958 encode_openhdr(xdr, arg);
959 encode_opentype(xdr, arg);
960 switch (arg->claim) {
961 case NFS4_OPEN_CLAIM_NULL:
962 encode_claim_null(xdr, arg->name);
963 break;
964 case NFS4_OPEN_CLAIM_PREVIOUS:
965 encode_claim_previous(xdr, arg->u.delegation_type);
966 break;
967 case NFS4_OPEN_CLAIM_DELEGATE_CUR:
968 encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation);
969 break;
970 default:
971 BUG();
972 }
973 return 0;
974 }
975
976 static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg)
977 {
978 uint32_t *p;
979
980 RESERVE_SPACE(8+sizeof(arg->stateid->data));
981 WRITE32(OP_OPEN_CONFIRM);
982 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
983 WRITE32(arg->seqid->sequence->counter);
984
985 return 0;
986 }
987
988 static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg)
989 {
990 uint32_t *p;
991
992 RESERVE_SPACE(8+sizeof(arg->stateid->data));
993 WRITE32(OP_OPEN_DOWNGRADE);
994 WRITEMEM(arg->stateid->data, sizeof(arg->stateid->data));
995 WRITE32(arg->seqid->sequence->counter);
996 encode_share_access(xdr, arg->open_flags);
997 return 0;
998 }
999
1000 static int
1001 encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh)
1002 {
1003 int len = fh->size;
1004 uint32_t *p;
1005
1006 RESERVE_SPACE(8 + len);
1007 WRITE32(OP_PUTFH);
1008 WRITE32(len);
1009 WRITEMEM(fh->data, len);
1010
1011 return 0;
1012 }
1013
1014 static int encode_putrootfh(struct xdr_stream *xdr)
1015 {
1016 uint32_t *p;
1017
1018 RESERVE_SPACE(4);
1019 WRITE32(OP_PUTROOTFH);
1020
1021 return 0;
1022 }
1023
1024 static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx)
1025 {
1026 nfs4_stateid stateid;
1027 uint32_t *p;
1028
1029 RESERVE_SPACE(16);
1030 if (ctx->state != NULL) {
1031 nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner);
1032 WRITEMEM(stateid.data, sizeof(stateid.data));
1033 } else
1034 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1035 }
1036
1037 static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args)
1038 {
1039 uint32_t *p;
1040
1041 RESERVE_SPACE(4);
1042 WRITE32(OP_READ);
1043
1044 encode_stateid(xdr, args->context);
1045
1046 RESERVE_SPACE(12);
1047 WRITE64(args->offset);
1048 WRITE32(args->count);
1049
1050 return 0;
1051 }
1052
1053 static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req)
1054 {
1055 struct rpc_auth *auth = req->rq_task->tk_auth;
1056 uint32_t attrs[2] = {
1057 FATTR4_WORD0_RDATTR_ERROR|FATTR4_WORD0_FILEID,
1058 FATTR4_WORD1_MOUNTED_ON_FILEID,
1059 };
1060 int replen;
1061 uint32_t *p;
1062
1063 RESERVE_SPACE(32+sizeof(nfs4_verifier));
1064 WRITE32(OP_READDIR);
1065 WRITE64(readdir->cookie);
1066 WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data));
1067 WRITE32(readdir->count >> 1); /* We're not doing readdirplus */
1068 WRITE32(readdir->count);
1069 WRITE32(2);
1070 /* Switch to mounted_on_fileid if the server supports it */
1071 if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID)
1072 attrs[0] &= ~FATTR4_WORD0_FILEID;
1073 else
1074 attrs[1] &= ~FATTR4_WORD1_MOUNTED_ON_FILEID;
1075 WRITE32(attrs[0] & readdir->bitmask[0]);
1076 WRITE32(attrs[1] & readdir->bitmask[1]);
1077 dprintk("%s: cookie = %Lu, verifier = 0x%x%x, bitmap = 0x%x%x\n",
1078 __FUNCTION__,
1079 (unsigned long long)readdir->cookie,
1080 ((u32 *)readdir->verifier.data)[0],
1081 ((u32 *)readdir->verifier.data)[1],
1082 attrs[0] & readdir->bitmask[0],
1083 attrs[1] & readdir->bitmask[1]);
1084
1085 /* set up reply kvec
1086 * toplevel_status + taglen + rescount + OP_PUTFH + status
1087 * + OP_READDIR + status + verifer(2) = 9
1088 */
1089 replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2;
1090 xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages,
1091 readdir->pgbase, readdir->count);
1092 dprintk("%s: inlined page args = (%u, %p, %u, %u)\n",
1093 __FUNCTION__, replen, readdir->pages,
1094 readdir->pgbase, readdir->count);
1095
1096 return 0;
1097 }
1098
1099 static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req)
1100 {
1101 struct rpc_auth *auth = req->rq_task->tk_auth;
1102 unsigned int replen;
1103 uint32_t *p;
1104
1105 RESERVE_SPACE(4);
1106 WRITE32(OP_READLINK);
1107
1108 /* set up reply kvec
1109 * toplevel_status + taglen + rescount + OP_PUTFH + status
1110 * + OP_READLINK + status + string length = 8
1111 */
1112 replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2;
1113 xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages,
1114 readlink->pgbase, readlink->pglen);
1115
1116 return 0;
1117 }
1118
1119 static int encode_remove(struct xdr_stream *xdr, const struct qstr *name)
1120 {
1121 uint32_t *p;
1122
1123 RESERVE_SPACE(8 + name->len);
1124 WRITE32(OP_REMOVE);
1125 WRITE32(name->len);
1126 WRITEMEM(name->name, name->len);
1127
1128 return 0;
1129 }
1130
1131 static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname)
1132 {
1133 uint32_t *p;
1134
1135 RESERVE_SPACE(8 + oldname->len);
1136 WRITE32(OP_RENAME);
1137 WRITE32(oldname->len);
1138 WRITEMEM(oldname->name, oldname->len);
1139
1140 RESERVE_SPACE(4 + newname->len);
1141 WRITE32(newname->len);
1142 WRITEMEM(newname->name, newname->len);
1143
1144 return 0;
1145 }
1146
1147 static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid)
1148 {
1149 uint32_t *p;
1150
1151 RESERVE_SPACE(12);
1152 WRITE32(OP_RENEW);
1153 WRITE64(client_stateid->cl_clientid);
1154
1155 return 0;
1156 }
1157
1158 static int
1159 encode_restorefh(struct xdr_stream *xdr)
1160 {
1161 uint32_t *p;
1162
1163 RESERVE_SPACE(4);
1164 WRITE32(OP_RESTOREFH);
1165
1166 return 0;
1167 }
1168
1169 static int
1170 encode_setacl(struct xdr_stream *xdr, struct nfs_setaclargs *arg)
1171 {
1172 uint32_t *p;
1173
1174 RESERVE_SPACE(4+sizeof(zero_stateid.data));
1175 WRITE32(OP_SETATTR);
1176 WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data));
1177 RESERVE_SPACE(2*4);
1178 WRITE32(1);
1179 WRITE32(FATTR4_WORD0_ACL);
1180 if (arg->acl_len % 4)
1181 return -EINVAL;
1182 RESERVE_SPACE(4);
1183 WRITE32(arg->acl_len);
1184 xdr_write_pages(xdr, arg->acl_pages, arg->acl_pgbase, arg->acl_len);
1185 return 0;
1186 }
1187
1188 static int
1189 encode_savefh(struct xdr_stream *xdr)
1190 {
1191 uint32_t *p;
1192
1193 RESERVE_SPACE(4);
1194 WRITE32(OP_SAVEFH);
1195
1196 return 0;
1197 }
1198
1199 static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server)
1200 {
1201 int status;
1202 uint32_t *p;
1203
1204 RESERVE_SPACE(4+sizeof(arg->stateid.data));
1205 WRITE32(OP_SETATTR);
1206 WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data));
1207
1208 if ((status = encode_attrs(xdr, arg->iap, server)))
1209 return status;
1210
1211 return 0;
1212 }
1213
1214 static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid)
1215 {
1216 uint32_t *p;
1217
1218 RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data));
1219 WRITE32(OP_SETCLIENTID);
1220 WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data));
1221
1222 encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name);
1223 RESERVE_SPACE(4);
1224 WRITE32(setclientid->sc_prog);
1225 encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid);
1226 encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr);
1227 RESERVE_SPACE(4);
1228 WRITE32(setclientid->sc_cb_ident);
1229
1230 return 0;
1231 }
1232
1233 static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state)
1234 {
1235 uint32_t *p;
1236
1237 RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data));
1238 WRITE32(OP_SETCLIENTID_CONFIRM);
1239 WRITE64(client_state->cl_clientid);
1240 WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data));
1241
1242 return 0;
1243 }
1244
1245 static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args)
1246 {
1247 uint32_t *p;
1248
1249 RESERVE_SPACE(4);
1250 WRITE32(OP_WRITE);
1251
1252 encode_stateid(xdr, args->context);
1253
1254 RESERVE_SPACE(16);
1255 WRITE64(args->offset);
1256 WRITE32(args->stable);
1257 WRITE32(args->count);
1258
1259 xdr_write_pages(xdr, args->pages, args->pgbase, args->count);
1260
1261 return 0;
1262 }
1263
1264 static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid)
1265 {
1266 uint32_t *p;
1267
1268 RESERVE_SPACE(20);
1269
1270 WRITE32(OP_DELEGRETURN);
1271 WRITEMEM(stateid->data, sizeof(stateid->data));
1272 return 0;
1273
1274 }
1275 /*
1276 * END OF "GENERIC" ENCODE ROUTINES.
1277 */
1278
1279 /*
1280 * Encode an ACCESS request
1281 */
1282 static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args)
1283 {
1284 struct xdr_stream xdr;
1285 struct compound_hdr hdr = {
1286 .nops = 2,
1287 };
1288 int status;
1289
1290 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1291 encode_compound_hdr(&xdr, &hdr);
1292 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1293 status = encode_access(&xdr, args->access);
1294 return status;
1295 }
1296
1297 /*
1298 * Encode LOOKUP request
1299 */
1300 static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args)
1301 {
1302 struct xdr_stream xdr;
1303 struct compound_hdr hdr = {
1304 .nops = 4,
1305 };
1306 int status;
1307
1308 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1309 encode_compound_hdr(&xdr, &hdr);
1310 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1311 goto out;
1312 if ((status = encode_lookup(&xdr, args->name)) != 0)
1313 goto out;
1314 if ((status = encode_getfh(&xdr)) != 0)
1315 goto out;
1316 status = encode_getfattr(&xdr, args->bitmask);
1317 out:
1318 return status;
1319 }
1320
1321 /*
1322 * Encode LOOKUP_ROOT request
1323 */
1324 static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args)
1325 {
1326 struct xdr_stream xdr;
1327 struct compound_hdr hdr = {
1328 .nops = 3,
1329 };
1330 int status;
1331
1332 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1333 encode_compound_hdr(&xdr, &hdr);
1334 if ((status = encode_putrootfh(&xdr)) != 0)
1335 goto out;
1336 if ((status = encode_getfh(&xdr)) == 0)
1337 status = encode_getfattr(&xdr, args->bitmask);
1338 out:
1339 return status;
1340 }
1341
1342 /*
1343 * Encode REMOVE request
1344 */
1345 static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args)
1346 {
1347 struct xdr_stream xdr;
1348 struct compound_hdr hdr = {
1349 .nops = 3,
1350 };
1351 int status;
1352
1353 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1354 encode_compound_hdr(&xdr, &hdr);
1355 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1356 goto out;
1357 if ((status = encode_remove(&xdr, args->name)) != 0)
1358 goto out;
1359 status = encode_getfattr(&xdr, args->bitmask);
1360 out:
1361 return status;
1362 }
1363
1364 /*
1365 * Encode RENAME request
1366 */
1367 static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args)
1368 {
1369 struct xdr_stream xdr;
1370 struct compound_hdr hdr = {
1371 .nops = 7,
1372 };
1373 int status;
1374
1375 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1376 encode_compound_hdr(&xdr, &hdr);
1377 if ((status = encode_putfh(&xdr, args->old_dir)) != 0)
1378 goto out;
1379 if ((status = encode_savefh(&xdr)) != 0)
1380 goto out;
1381 if ((status = encode_putfh(&xdr, args->new_dir)) != 0)
1382 goto out;
1383 if ((status = encode_rename(&xdr, args->old_name, args->new_name)) != 0)
1384 goto out;
1385 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1386 goto out;
1387 if ((status = encode_restorefh(&xdr)) != 0)
1388 goto out;
1389 status = encode_getfattr(&xdr, args->bitmask);
1390 out:
1391 return status;
1392 }
1393
1394 /*
1395 * Encode LINK request
1396 */
1397 static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args)
1398 {
1399 struct xdr_stream xdr;
1400 struct compound_hdr hdr = {
1401 .nops = 7,
1402 };
1403 int status;
1404
1405 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1406 encode_compound_hdr(&xdr, &hdr);
1407 if ((status = encode_putfh(&xdr, args->fh)) != 0)
1408 goto out;
1409 if ((status = encode_savefh(&xdr)) != 0)
1410 goto out;
1411 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1412 goto out;
1413 if ((status = encode_link(&xdr, args->name)) != 0)
1414 goto out;
1415 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1416 goto out;
1417 if ((status = encode_restorefh(&xdr)) != 0)
1418 goto out;
1419 status = encode_getfattr(&xdr, args->bitmask);
1420 out:
1421 return status;
1422 }
1423
1424 /*
1425 * Encode CREATE request
1426 */
1427 static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1428 {
1429 struct xdr_stream xdr;
1430 struct compound_hdr hdr = {
1431 .nops = 7,
1432 };
1433 int status;
1434
1435 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1436 encode_compound_hdr(&xdr, &hdr);
1437 if ((status = encode_putfh(&xdr, args->dir_fh)) != 0)
1438 goto out;
1439 if ((status = encode_savefh(&xdr)) != 0)
1440 goto out;
1441 if ((status = encode_create(&xdr, args)) != 0)
1442 goto out;
1443 if ((status = encode_getfh(&xdr)) != 0)
1444 goto out;
1445 if ((status = encode_getfattr(&xdr, args->bitmask)) != 0)
1446 goto out;
1447 if ((status = encode_restorefh(&xdr)) != 0)
1448 goto out;
1449 status = encode_getfattr(&xdr, args->bitmask);
1450 out:
1451 return status;
1452 }
1453
1454 /*
1455 * Encode SYMLINK request
1456 */
1457 static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args)
1458 {
1459 return nfs4_xdr_enc_create(req, p, args);
1460 }
1461
1462 /*
1463 * Encode GETATTR request
1464 */
1465 static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args)
1466 {
1467 struct xdr_stream xdr;
1468 struct compound_hdr hdr = {
1469 .nops = 2,
1470 };
1471 int status;
1472
1473 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1474 encode_compound_hdr(&xdr, &hdr);
1475 if ((status = encode_putfh(&xdr, args->fh)) == 0)
1476 status = encode_getfattr(&xdr, args->bitmask);
1477 return status;
1478 }
1479
1480 /*
1481 * Encode a CLOSE request
1482 */
1483 static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1484 {
1485 struct xdr_stream xdr;
1486 struct compound_hdr hdr = {
1487 .nops = 3,
1488 };
1489 int status;
1490
1491 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1492 encode_compound_hdr(&xdr, &hdr);
1493 status = encode_putfh(&xdr, args->fh);
1494 if(status)
1495 goto out;
1496 status = encode_close(&xdr, args);
1497 if (status != 0)
1498 goto out;
1499 status = encode_getfattr(&xdr, args->bitmask);
1500 out:
1501 return status;
1502 }
1503
1504 /*
1505 * Encode an OPEN request
1506 */
1507 static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1508 {
1509 struct xdr_stream xdr;
1510 struct compound_hdr hdr = {
1511 .nops = 7,
1512 };
1513 int status;
1514
1515 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1516 encode_compound_hdr(&xdr, &hdr);
1517 status = encode_putfh(&xdr, args->fh);
1518 if (status)
1519 goto out;
1520 status = encode_savefh(&xdr);
1521 if (status)
1522 goto out;
1523 status = encode_open(&xdr, args);
1524 if (status)
1525 goto out;
1526 status = encode_getfh(&xdr);
1527 if (status)
1528 goto out;
1529 status = encode_getfattr(&xdr, args->bitmask);
1530 if (status)
1531 goto out;
1532 status = encode_restorefh(&xdr);
1533 if (status)
1534 goto out;
1535 status = encode_getfattr(&xdr, args->bitmask);
1536 out:
1537 return status;
1538 }
1539
1540 /*
1541 * Encode an OPEN_CONFIRM request
1542 */
1543 static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args)
1544 {
1545 struct xdr_stream xdr;
1546 struct compound_hdr hdr = {
1547 .nops = 2,
1548 };
1549 int status;
1550
1551 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1552 encode_compound_hdr(&xdr, &hdr);
1553 status = encode_putfh(&xdr, args->fh);
1554 if(status)
1555 goto out;
1556 status = encode_open_confirm(&xdr, args);
1557 out:
1558 return status;
1559 }
1560
1561 /*
1562 * Encode an OPEN request with no attributes.
1563 */
1564 static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args)
1565 {
1566 struct xdr_stream xdr;
1567 struct compound_hdr hdr = {
1568 .nops = 3,
1569 };
1570 int status;
1571
1572 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1573 encode_compound_hdr(&xdr, &hdr);
1574 status = encode_putfh(&xdr, args->fh);
1575 if (status)
1576 goto out;
1577 status = encode_open(&xdr, args);
1578 if (status)
1579 goto out;
1580 status = encode_getfattr(&xdr, args->bitmask);
1581 out:
1582 return status;
1583 }
1584
1585 /*
1586 * Encode an OPEN_DOWNGRADE request
1587 */
1588 static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args)
1589 {
1590 struct xdr_stream xdr;
1591 struct compound_hdr hdr = {
1592 .nops = 3,
1593 };
1594 int status;
1595
1596 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1597 encode_compound_hdr(&xdr, &hdr);
1598 status = encode_putfh(&xdr, args->fh);
1599 if (status)
1600 goto out;
1601 status = encode_open_downgrade(&xdr, args);
1602 if (status != 0)
1603 goto out;
1604 status = encode_getfattr(&xdr, args->bitmask);
1605 out:
1606 return status;
1607 }
1608
1609 /*
1610 * Encode a LOCK request
1611 */
1612 static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lock_args *args)
1613 {
1614 struct xdr_stream xdr;
1615 struct compound_hdr hdr = {
1616 .nops = 2,
1617 };
1618 int status;
1619
1620 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1621 encode_compound_hdr(&xdr, &hdr);
1622 status = encode_putfh(&xdr, args->fh);
1623 if(status)
1624 goto out;
1625 status = encode_lock(&xdr, args);
1626 out:
1627 return status;
1628 }
1629
1630 /*
1631 * Encode a LOCKT request
1632 */
1633 static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockt_args *args)
1634 {
1635 struct xdr_stream xdr;
1636 struct compound_hdr hdr = {
1637 .nops = 2,
1638 };
1639 int status;
1640
1641 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1642 encode_compound_hdr(&xdr, &hdr);
1643 status = encode_putfh(&xdr, args->fh);
1644 if(status)
1645 goto out;
1646 status = encode_lockt(&xdr, args);
1647 out:
1648 return status;
1649 }
1650
1651 /*
1652 * Encode a LOCKU request
1653 */
1654 static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_locku_args *args)
1655 {
1656 struct xdr_stream xdr;
1657 struct compound_hdr hdr = {
1658 .nops = 2,
1659 };
1660 int status;
1661
1662 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1663 encode_compound_hdr(&xdr, &hdr);
1664 status = encode_putfh(&xdr, args->fh);
1665 if(status)
1666 goto out;
1667 status = encode_locku(&xdr, args);
1668 out:
1669 return status;
1670 }
1671
1672 /*
1673 * Encode a READLINK request
1674 */
1675 static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args)
1676 {
1677 struct xdr_stream xdr;
1678 struct compound_hdr hdr = {
1679 .nops = 2,
1680 };
1681 int status;
1682
1683 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1684 encode_compound_hdr(&xdr, &hdr);
1685 status = encode_putfh(&xdr, args->fh);
1686 if(status)
1687 goto out;
1688 status = encode_readlink(&xdr, args, req);
1689 out:
1690 return status;
1691 }
1692
1693 /*
1694 * Encode a READDIR request
1695 */
1696 static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args)
1697 {
1698 struct xdr_stream xdr;
1699 struct compound_hdr hdr = {
1700 .nops = 2,
1701 };
1702 int status;
1703
1704 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1705 encode_compound_hdr(&xdr, &hdr);
1706 status = encode_putfh(&xdr, args->fh);
1707 if(status)
1708 goto out;
1709 status = encode_readdir(&xdr, args, req);
1710 out:
1711 return status;
1712 }
1713
1714 /*
1715 * Encode a READ request
1716 */
1717 static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args)
1718 {
1719 struct rpc_auth *auth = req->rq_task->tk_auth;
1720 struct xdr_stream xdr;
1721 struct compound_hdr hdr = {
1722 .nops = 2,
1723 };
1724 int replen, status;
1725
1726 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1727 encode_compound_hdr(&xdr, &hdr);
1728 status = encode_putfh(&xdr, args->fh);
1729 if (status)
1730 goto out;
1731 status = encode_read(&xdr, args);
1732 if (status)
1733 goto out;
1734
1735 /* set up reply kvec
1736 * toplevel status + taglen=0 + rescount + OP_PUTFH + status
1737 * + OP_READ + status + eof + datalen = 9
1738 */
1739 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2;
1740 xdr_inline_pages(&req->rq_rcv_buf, replen,
1741 args->pages, args->pgbase, args->count);
1742 out:
1743 return status;
1744 }
1745
1746 /*
1747 * Encode an SETATTR request
1748 */
1749 static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args)
1750
1751 {
1752 struct xdr_stream xdr;
1753 struct compound_hdr hdr = {
1754 .nops = 3,
1755 };
1756 int status;
1757
1758 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1759 encode_compound_hdr(&xdr, &hdr);
1760 status = encode_putfh(&xdr, args->fh);
1761 if(status)
1762 goto out;
1763 status = encode_setattr(&xdr, args, args->server);
1764 if(status)
1765 goto out;
1766 status = encode_getfattr(&xdr, args->bitmask);
1767 out:
1768 return status;
1769 }
1770
1771 /*
1772 * Encode a GETACL request
1773 */
1774 static int
1775 nfs4_xdr_enc_getacl(struct rpc_rqst *req, uint32_t *p,
1776 struct nfs_getaclargs *args)
1777 {
1778 struct xdr_stream xdr;
1779 struct rpc_auth *auth = req->rq_task->tk_auth;
1780 struct compound_hdr hdr = {
1781 .nops = 2,
1782 };
1783 int replen, status;
1784
1785 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1786 encode_compound_hdr(&xdr, &hdr);
1787 status = encode_putfh(&xdr, args->fh);
1788 if (status)
1789 goto out;
1790 status = encode_getattr_two(&xdr, FATTR4_WORD0_ACL, 0);
1791 /* set up reply buffer: */
1792 replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_getacl_sz) << 2;
1793 xdr_inline_pages(&req->rq_rcv_buf, replen,
1794 args->acl_pages, args->acl_pgbase, args->acl_len);
1795 out:
1796 return status;
1797 }
1798
1799 /*
1800 * Encode a WRITE request
1801 */
1802 static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1803 {
1804 struct xdr_stream xdr;
1805 struct compound_hdr hdr = {
1806 .nops = 3,
1807 };
1808 int status;
1809
1810 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1811 encode_compound_hdr(&xdr, &hdr);
1812 status = encode_putfh(&xdr, args->fh);
1813 if (status)
1814 goto out;
1815 status = encode_write(&xdr, args);
1816 if (status)
1817 goto out;
1818 status = encode_getfattr(&xdr, args->bitmask);
1819 out:
1820 return status;
1821 }
1822
1823 /*
1824 * a COMMIT request
1825 */
1826 static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args)
1827 {
1828 struct xdr_stream xdr;
1829 struct compound_hdr hdr = {
1830 .nops = 3,
1831 };
1832 int status;
1833
1834 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1835 encode_compound_hdr(&xdr, &hdr);
1836 status = encode_putfh(&xdr, args->fh);
1837 if (status)
1838 goto out;
1839 status = encode_commit(&xdr, args);
1840 if (status)
1841 goto out;
1842 status = encode_getfattr(&xdr, args->bitmask);
1843 out:
1844 return status;
1845 }
1846
1847 /*
1848 * FSINFO request
1849 */
1850 static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args)
1851 {
1852 struct xdr_stream xdr;
1853 struct compound_hdr hdr = {
1854 .nops = 2,
1855 };
1856 int status;
1857
1858 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1859 encode_compound_hdr(&xdr, &hdr);
1860 status = encode_putfh(&xdr, args->fh);
1861 if (!status)
1862 status = encode_fsinfo(&xdr, args->bitmask);
1863 return status;
1864 }
1865
1866 /*
1867 * a PATHCONF request
1868 */
1869 static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args)
1870 {
1871 struct xdr_stream xdr;
1872 struct compound_hdr hdr = {
1873 .nops = 2,
1874 };
1875 int status;
1876
1877 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1878 encode_compound_hdr(&xdr, &hdr);
1879 status = encode_putfh(&xdr, args->fh);
1880 if (!status)
1881 status = encode_getattr_one(&xdr,
1882 args->bitmask[0] & nfs4_pathconf_bitmap[0]);
1883 return status;
1884 }
1885
1886 /*
1887 * a STATFS request
1888 */
1889 static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args)
1890 {
1891 struct xdr_stream xdr;
1892 struct compound_hdr hdr = {
1893 .nops = 2,
1894 };
1895 int status;
1896
1897 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1898 encode_compound_hdr(&xdr, &hdr);
1899 status = encode_putfh(&xdr, args->fh);
1900 if (status == 0)
1901 status = encode_getattr_two(&xdr,
1902 args->bitmask[0] & nfs4_statfs_bitmap[0],
1903 args->bitmask[1] & nfs4_statfs_bitmap[1]);
1904 return status;
1905 }
1906
1907 /*
1908 * GETATTR_BITMAP request
1909 */
1910 static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle)
1911 {
1912 struct xdr_stream xdr;
1913 struct compound_hdr hdr = {
1914 .nops = 2,
1915 };
1916 int status;
1917
1918 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1919 encode_compound_hdr(&xdr, &hdr);
1920 status = encode_putfh(&xdr, fhandle);
1921 if (status == 0)
1922 status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS|
1923 FATTR4_WORD0_LINK_SUPPORT|
1924 FATTR4_WORD0_SYMLINK_SUPPORT|
1925 FATTR4_WORD0_ACLSUPPORT);
1926 return status;
1927 }
1928
1929 /*
1930 * a RENEW request
1931 */
1932 static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1933 {
1934 struct xdr_stream xdr;
1935 struct compound_hdr hdr = {
1936 .nops = 1,
1937 };
1938
1939 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1940 encode_compound_hdr(&xdr, &hdr);
1941 return encode_renew(&xdr, clp);
1942 }
1943
1944 /*
1945 * a SETCLIENTID request
1946 */
1947 static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc)
1948 {
1949 struct xdr_stream xdr;
1950 struct compound_hdr hdr = {
1951 .nops = 1,
1952 };
1953
1954 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1955 encode_compound_hdr(&xdr, &hdr);
1956 return encode_setclientid(&xdr, sc);
1957 }
1958
1959 /*
1960 * a SETCLIENTID_CONFIRM request
1961 */
1962 static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp)
1963 {
1964 struct xdr_stream xdr;
1965 struct compound_hdr hdr = {
1966 .nops = 3,
1967 };
1968 const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 };
1969 int status;
1970
1971 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1972 encode_compound_hdr(&xdr, &hdr);
1973 status = encode_setclientid_confirm(&xdr, clp);
1974 if (!status)
1975 status = encode_putrootfh(&xdr);
1976 if (!status)
1977 status = encode_fsinfo(&xdr, lease_bitmap);
1978 return status;
1979 }
1980
1981 /*
1982 * DELEGRETURN request
1983 */
1984 static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args)
1985 {
1986 struct xdr_stream xdr;
1987 struct compound_hdr hdr = {
1988 .nops = 3,
1989 };
1990 int status;
1991
1992 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
1993 encode_compound_hdr(&xdr, &hdr);
1994 status = encode_putfh(&xdr, args->fhandle);
1995 if (status != 0)
1996 goto out;
1997 status = encode_delegreturn(&xdr, args->stateid);
1998 if (status != 0)
1999 goto out;
2000 status = encode_getfattr(&xdr, args->bitmask);
2001 out:
2002 return status;
2003 }
2004
2005 /*
2006 * START OF "GENERIC" DECODE ROUTINES.
2007 * These may look a little ugly since they are imported from a "generic"
2008 * set of XDR encode/decode routines which are intended to be shared by
2009 * all of our NFSv4 implementations (OpenBSD, MacOS X...).
2010 *
2011 * If the pain of reading these is too great, it should be a straightforward
2012 * task to translate them into Linux-specific versions which are more
2013 * consistent with the style used in NFSv2/v3...
2014 */
2015 #define READ32(x) (x) = ntohl(*p++)
2016 #define READ64(x) do { \
2017 (x) = (u64)ntohl(*p++) << 32; \
2018 (x) |= ntohl(*p++); \
2019 } while (0)
2020 #define READTIME(x) do { \
2021 p++; \
2022 (x.tv_sec) = ntohl(*p++); \
2023 (x.tv_nsec) = ntohl(*p++); \
2024 } while (0)
2025 #define COPYMEM(x,nbytes) do { \
2026 memcpy((x), p, nbytes); \
2027 p += XDR_QUADLEN(nbytes); \
2028 } while (0)
2029
2030 #define READ_BUF(nbytes) do { \
2031 p = xdr_inline_decode(xdr, nbytes); \
2032 if (!p) { \
2033 printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \
2034 __FUNCTION__, __LINE__); \
2035 return -EIO; \
2036 } \
2037 } while (0)
2038
2039 static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string)
2040 {
2041 uint32_t *p;
2042
2043 READ_BUF(4);
2044 READ32(*len);
2045 READ_BUF(*len);
2046 *string = (char *)p;
2047 return 0;
2048 }
2049
2050 static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr)
2051 {
2052 uint32_t *p;
2053
2054 READ_BUF(8);
2055 READ32(hdr->status);
2056 READ32(hdr->taglen);
2057
2058 READ_BUF(hdr->taglen + 4);
2059 hdr->tag = (char *)p;
2060 p += XDR_QUADLEN(hdr->taglen);
2061 READ32(hdr->nops);
2062 return 0;
2063 }
2064
2065 static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected)
2066 {
2067 uint32_t *p;
2068 uint32_t opnum;
2069 int32_t nfserr;
2070
2071 READ_BUF(8);
2072 READ32(opnum);
2073 if (opnum != expected) {
2074 printk(KERN_NOTICE
2075 "nfs4_decode_op_hdr: Server returned operation"
2076 " %d but we issued a request for %d\n",
2077 opnum, expected);
2078 return -EIO;
2079 }
2080 READ32(nfserr);
2081 if (nfserr != NFS_OK)
2082 return -nfs_stat_to_errno(nfserr);
2083 return 0;
2084 }
2085
2086 /* Dummy routine */
2087 static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp)
2088 {
2089 uint32_t *p;
2090 uint32_t strlen;
2091 char *str;
2092
2093 READ_BUF(12);
2094 return decode_opaque_inline(xdr, &strlen, &str);
2095 }
2096
2097 static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
2098 {
2099 uint32_t bmlen, *p;
2100
2101 READ_BUF(4);
2102 READ32(bmlen);
2103
2104 bitmap[0] = bitmap[1] = 0;
2105 READ_BUF((bmlen << 2));
2106 if (bmlen > 0) {
2107 READ32(bitmap[0]);
2108 if (bmlen > 1)
2109 READ32(bitmap[1]);
2110 }
2111 return 0;
2112 }
2113
2114 static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep)
2115 {
2116 uint32_t *p;
2117
2118 READ_BUF(4);
2119 READ32(*attrlen);
2120 *savep = xdr->p;
2121 return 0;
2122 }
2123
2124 static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask)
2125 {
2126 if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) {
2127 decode_attr_bitmap(xdr, bitmask);
2128 bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS;
2129 } else
2130 bitmask[0] = bitmask[1] = 0;
2131 dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]);
2132 return 0;
2133 }
2134
2135 static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type)
2136 {
2137 uint32_t *p;
2138
2139 *type = 0;
2140 if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U)))
2141 return -EIO;
2142 if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) {
2143 READ_BUF(4);
2144 READ32(*type);
2145 if (*type < NF4REG || *type > NF4NAMEDATTR) {
2146 dprintk("%s: bad type %d\n", __FUNCTION__, *type);
2147 return -EIO;
2148 }
2149 bitmap[0] &= ~FATTR4_WORD0_TYPE;
2150 }
2151 dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type);
2152 return 0;
2153 }
2154
2155 static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change)
2156 {
2157 uint32_t *p;
2158
2159 *change = 0;
2160 if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U)))
2161 return -EIO;
2162 if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) {
2163 READ_BUF(8);
2164 READ64(*change);
2165 bitmap[0] &= ~FATTR4_WORD0_CHANGE;
2166 }
2167 dprintk("%s: change attribute=%Lu\n", __FUNCTION__,
2168 (unsigned long long)*change);
2169 return 0;
2170 }
2171
2172 static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size)
2173 {
2174 uint32_t *p;
2175
2176 *size = 0;
2177 if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U)))
2178 return -EIO;
2179 if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) {
2180 READ_BUF(8);
2181 READ64(*size);
2182 bitmap[0] &= ~FATTR4_WORD0_SIZE;
2183 }
2184 dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size);
2185 return 0;
2186 }
2187
2188 static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2189 {
2190 uint32_t *p;
2191
2192 *res = 0;
2193 if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U)))
2194 return -EIO;
2195 if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) {
2196 READ_BUF(4);
2197 READ32(*res);
2198 bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT;
2199 }
2200 dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2201 return 0;
2202 }
2203
2204 static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2205 {
2206 uint32_t *p;
2207
2208 *res = 0;
2209 if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U)))
2210 return -EIO;
2211 if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) {
2212 READ_BUF(4);
2213 READ32(*res);
2214 bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT;
2215 }
2216 dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true");
2217 return 0;
2218 }
2219
2220 static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid)
2221 {
2222 uint32_t *p;
2223
2224 fsid->major = 0;
2225 fsid->minor = 0;
2226 if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U)))
2227 return -EIO;
2228 if (likely(bitmap[0] & FATTR4_WORD0_FSID)) {
2229 READ_BUF(16);
2230 READ64(fsid->major);
2231 READ64(fsid->minor);
2232 bitmap[0] &= ~FATTR4_WORD0_FSID;
2233 }
2234 dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__,
2235 (unsigned long long)fsid->major,
2236 (unsigned long long)fsid->minor);
2237 return 0;
2238 }
2239
2240 static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2241 {
2242 uint32_t *p;
2243
2244 *res = 60;
2245 if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U)))
2246 return -EIO;
2247 if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) {
2248 READ_BUF(4);
2249 READ32(*res);
2250 bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
2251 }
2252 dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res);
2253 return 0;
2254 }
2255
2256 static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2257 {
2258 uint32_t *p;
2259
2260 *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL;
2261 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U)))
2262 return -EIO;
2263 if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) {
2264 READ_BUF(4);
2265 READ32(*res);
2266 bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT;
2267 }
2268 dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res);
2269 return 0;
2270 }
2271
2272 static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid)
2273 {
2274 uint32_t *p;
2275
2276 *fileid = 0;
2277 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U)))
2278 return -EIO;
2279 if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) {
2280 READ_BUF(8);
2281 READ64(*fileid);
2282 bitmap[0] &= ~FATTR4_WORD0_FILEID;
2283 }
2284 dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid);
2285 return 0;
2286 }
2287
2288 static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2289 {
2290 uint32_t *p;
2291 int status = 0;
2292
2293 *res = 0;
2294 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U)))
2295 return -EIO;
2296 if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) {
2297 READ_BUF(8);
2298 READ64(*res);
2299 bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL;
2300 }
2301 dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2302 return status;
2303 }
2304
2305 static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2306 {
2307 uint32_t *p;
2308 int status = 0;
2309
2310 *res = 0;
2311 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U)))
2312 return -EIO;
2313 if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) {
2314 READ_BUF(8);
2315 READ64(*res);
2316 bitmap[0] &= ~FATTR4_WORD0_FILES_FREE;
2317 }
2318 dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2319 return status;
2320 }
2321
2322 static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2323 {
2324 uint32_t *p;
2325 int status = 0;
2326
2327 *res = 0;
2328 if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U)))
2329 return -EIO;
2330 if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) {
2331 READ_BUF(8);
2332 READ64(*res);
2333 bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL;
2334 }
2335 dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2336 return status;
2337 }
2338
2339 static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2340 {
2341 uint32_t *p;
2342 int status = 0;
2343
2344 *res = 0;
2345 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U)))
2346 return -EIO;
2347 if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) {
2348 READ_BUF(8);
2349 READ64(*res);
2350 bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE;
2351 }
2352 dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2353 return status;
2354 }
2355
2356 static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink)
2357 {
2358 uint32_t *p;
2359 int status = 0;
2360
2361 *maxlink = 1;
2362 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U)))
2363 return -EIO;
2364 if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) {
2365 READ_BUF(4);
2366 READ32(*maxlink);
2367 bitmap[0] &= ~FATTR4_WORD0_MAXLINK;
2368 }
2369 dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink);
2370 return status;
2371 }
2372
2373 static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname)
2374 {
2375 uint32_t *p;
2376 int status = 0;
2377
2378 *maxname = 1024;
2379 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U)))
2380 return -EIO;
2381 if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) {
2382 READ_BUF(4);
2383 READ32(*maxname);
2384 bitmap[0] &= ~FATTR4_WORD0_MAXNAME;
2385 }
2386 dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname);
2387 return status;
2388 }
2389
2390 static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2391 {
2392 uint32_t *p;
2393 int status = 0;
2394
2395 *res = 1024;
2396 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U)))
2397 return -EIO;
2398 if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) {
2399 uint64_t maxread;
2400 READ_BUF(8);
2401 READ64(maxread);
2402 if (maxread > 0x7FFFFFFF)
2403 maxread = 0x7FFFFFFF;
2404 *res = (uint32_t)maxread;
2405 bitmap[0] &= ~FATTR4_WORD0_MAXREAD;
2406 }
2407 dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res);
2408 return status;
2409 }
2410
2411 static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res)
2412 {
2413 uint32_t *p;
2414 int status = 0;
2415
2416 *res = 1024;
2417 if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U)))
2418 return -EIO;
2419 if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) {
2420 uint64_t maxwrite;
2421 READ_BUF(8);
2422 READ64(maxwrite);
2423 if (maxwrite > 0x7FFFFFFF)
2424 maxwrite = 0x7FFFFFFF;
2425 *res = (uint32_t)maxwrite;
2426 bitmap[0] &= ~FATTR4_WORD0_MAXWRITE;
2427 }
2428 dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res);
2429 return status;
2430 }
2431
2432 static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode)
2433 {
2434 uint32_t *p;
2435
2436 *mode = 0;
2437 if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U)))
2438 return -EIO;
2439 if (likely(bitmap[1] & FATTR4_WORD1_MODE)) {
2440 READ_BUF(4);
2441 READ32(*mode);
2442 *mode &= ~S_IFMT;
2443 bitmap[1] &= ~FATTR4_WORD1_MODE;
2444 }
2445 dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode);
2446 return 0;
2447 }
2448
2449 static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink)
2450 {
2451 uint32_t *p;
2452
2453 *nlink = 1;
2454 if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U)))
2455 return -EIO;
2456 if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) {
2457 READ_BUF(4);
2458 READ32(*nlink);
2459 bitmap[1] &= ~FATTR4_WORD1_NUMLINKS;
2460 }
2461 dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink);
2462 return 0;
2463 }
2464
2465 static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid)
2466 {
2467 uint32_t len, *p;
2468
2469 *uid = -2;
2470 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U)))
2471 return -EIO;
2472 if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) {
2473 READ_BUF(4);
2474 READ32(len);
2475 READ_BUF(len);
2476 if (len < XDR_MAX_NETOBJ) {
2477 if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0)
2478 dprintk("%s: nfs_map_name_to_uid failed!\n",
2479 __FUNCTION__);
2480 } else
2481 printk(KERN_WARNING "%s: name too long (%u)!\n",
2482 __FUNCTION__, len);
2483 bitmap[1] &= ~FATTR4_WORD1_OWNER;
2484 }
2485 dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid);
2486 return 0;
2487 }
2488
2489 static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid)
2490 {
2491 uint32_t len, *p;
2492
2493 *gid = -2;
2494 if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U)))
2495 return -EIO;
2496 if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) {
2497 READ_BUF(4);
2498 READ32(len);
2499 READ_BUF(len);
2500 if (len < XDR_MAX_NETOBJ) {
2501 if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0)
2502 dprintk("%s: nfs_map_group_to_gid failed!\n",
2503 __FUNCTION__);
2504 } else
2505 printk(KERN_WARNING "%s: name too long (%u)!\n",
2506 __FUNCTION__, len);
2507 bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP;
2508 }
2509 dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid);
2510 return 0;
2511 }
2512
2513 static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev)
2514 {
2515 uint32_t major = 0, minor = 0, *p;
2516
2517 *rdev = MKDEV(0,0);
2518 if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U)))
2519 return -EIO;
2520 if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) {
2521 dev_t tmp;
2522
2523 READ_BUF(8);
2524 READ32(major);
2525 READ32(minor);
2526 tmp = MKDEV(major, minor);
2527 if (MAJOR(tmp) == major && MINOR(tmp) == minor)
2528 *rdev = tmp;
2529 bitmap[1] &= ~ FATTR4_WORD1_RAWDEV;
2530 }
2531 dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor);
2532 return 0;
2533 }
2534
2535 static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2536 {
2537 uint32_t *p;
2538 int status = 0;
2539
2540 *res = 0;
2541 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U)))
2542 return -EIO;
2543 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) {
2544 READ_BUF(8);
2545 READ64(*res);
2546 bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL;
2547 }
2548 dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2549 return status;
2550 }
2551
2552 static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2553 {
2554 uint32_t *p;
2555 int status = 0;
2556
2557 *res = 0;
2558 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U)))
2559 return -EIO;
2560 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) {
2561 READ_BUF(8);
2562 READ64(*res);
2563 bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE;
2564 }
2565 dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2566 return status;
2567 }
2568
2569 static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res)
2570 {
2571 uint32_t *p;
2572 int status = 0;
2573
2574 *res = 0;
2575 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U)))
2576 return -EIO;
2577 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) {
2578 READ_BUF(8);
2579 READ64(*res);
2580 bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL;
2581 }
2582 dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res);
2583 return status;
2584 }
2585
2586 static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used)
2587 {
2588 uint32_t *p;
2589
2590 *used = 0;
2591 if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U)))
2592 return -EIO;
2593 if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) {
2594 READ_BUF(8);
2595 READ64(*used);
2596 bitmap[1] &= ~FATTR4_WORD1_SPACE_USED;
2597 }
2598 dprintk("%s: space used=%Lu\n", __FUNCTION__,
2599 (unsigned long long)*used);
2600 return 0;
2601 }
2602
2603 static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time)
2604 {
2605 uint32_t *p;
2606 uint64_t sec;
2607 uint32_t nsec;
2608
2609 READ_BUF(12);
2610 READ64(sec);
2611 READ32(nsec);
2612 time->tv_sec = (time_t)sec;
2613 time->tv_nsec = (long)nsec;
2614 return 0;
2615 }
2616
2617 static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2618 {
2619 int status = 0;
2620
2621 time->tv_sec = 0;
2622 time->tv_nsec = 0;
2623 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U)))
2624 return -EIO;
2625 if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) {
2626 status = decode_attr_time(xdr, time);
2627 bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS;
2628 }
2629 dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2630 return status;
2631 }
2632
2633 static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2634 {
2635 int status = 0;
2636
2637 time->tv_sec = 0;
2638 time->tv_nsec = 0;
2639 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U)))
2640 return -EIO;
2641 if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) {
2642 status = decode_attr_time(xdr, time);
2643 bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA;
2644 }
2645 dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2646 return status;
2647 }
2648
2649 static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time)
2650 {
2651 int status = 0;
2652
2653 time->tv_sec = 0;
2654 time->tv_nsec = 0;
2655 if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U)))
2656 return -EIO;
2657 if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) {
2658 status = decode_attr_time(xdr, time);
2659 bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY;
2660 }
2661 dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec);
2662 return status;
2663 }
2664
2665 static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen)
2666 {
2667 unsigned int attrwords = XDR_QUADLEN(attrlen);
2668 unsigned int nwords = xdr->p - savep;
2669
2670 if (unlikely(attrwords != nwords)) {
2671 printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n",
2672 __FUNCTION__,
2673 attrwords << 2,
2674 (attrwords < nwords) ? '<' : '>',
2675 nwords << 2);
2676 return -EIO;
2677 }
2678 return 0;
2679 }
2680
2681 static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2682 {
2683 uint32_t *p;
2684
2685 READ_BUF(20);
2686 READ32(cinfo->atomic);
2687 READ64(cinfo->before);
2688 READ64(cinfo->after);
2689 return 0;
2690 }
2691
2692 static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access)
2693 {
2694 uint32_t *p;
2695 uint32_t supp, acc;
2696 int status;
2697
2698 status = decode_op_hdr(xdr, OP_ACCESS);
2699 if (status)
2700 return status;
2701 READ_BUF(8);
2702 READ32(supp);
2703 READ32(acc);
2704 access->supported = supp;
2705 access->access = acc;
2706 return 0;
2707 }
2708
2709 static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res)
2710 {
2711 uint32_t *p;
2712 int status;
2713
2714 status = decode_op_hdr(xdr, OP_CLOSE);
2715 if (status)
2716 return status;
2717 READ_BUF(sizeof(res->stateid.data));
2718 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2719 return 0;
2720 }
2721
2722 static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res)
2723 {
2724 uint32_t *p;
2725 int status;
2726
2727 status = decode_op_hdr(xdr, OP_COMMIT);
2728 if (status)
2729 return status;
2730 READ_BUF(8);
2731 COPYMEM(res->verf->verifier, 8);
2732 return 0;
2733 }
2734
2735 static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2736 {
2737 uint32_t *p;
2738 uint32_t bmlen;
2739 int status;
2740
2741 status = decode_op_hdr(xdr, OP_CREATE);
2742 if (status)
2743 return status;
2744 if ((status = decode_change_info(xdr, cinfo)))
2745 return status;
2746 READ_BUF(4);
2747 READ32(bmlen);
2748 READ_BUF(bmlen << 2);
2749 return 0;
2750 }
2751
2752 static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res)
2753 {
2754 uint32_t *savep;
2755 uint32_t attrlen,
2756 bitmap[2] = {0};
2757 int status;
2758
2759 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2760 goto xdr_error;
2761 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2762 goto xdr_error;
2763 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2764 goto xdr_error;
2765 if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0)
2766 goto xdr_error;
2767 if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0)
2768 goto xdr_error;
2769 if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0)
2770 goto xdr_error;
2771 if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0)
2772 goto xdr_error;
2773 status = verify_attr_len(xdr, savep, attrlen);
2774 xdr_error:
2775 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2776 return status;
2777 }
2778
2779 static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat)
2780 {
2781 uint32_t *savep;
2782 uint32_t attrlen,
2783 bitmap[2] = {0};
2784 int status;
2785
2786 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2787 goto xdr_error;
2788 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2789 goto xdr_error;
2790 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2791 goto xdr_error;
2792
2793 if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0)
2794 goto xdr_error;
2795 if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0)
2796 goto xdr_error;
2797 if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0)
2798 goto xdr_error;
2799 if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0)
2800 goto xdr_error;
2801 if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0)
2802 goto xdr_error;
2803 if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0)
2804 goto xdr_error;
2805
2806 status = verify_attr_len(xdr, savep, attrlen);
2807 xdr_error:
2808 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2809 return status;
2810 }
2811
2812 static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf)
2813 {
2814 uint32_t *savep;
2815 uint32_t attrlen,
2816 bitmap[2] = {0};
2817 int status;
2818
2819 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2820 goto xdr_error;
2821 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2822 goto xdr_error;
2823 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2824 goto xdr_error;
2825
2826 if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0)
2827 goto xdr_error;
2828 if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0)
2829 goto xdr_error;
2830
2831 status = verify_attr_len(xdr, savep, attrlen);
2832 xdr_error:
2833 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2834 return status;
2835 }
2836
2837 static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server)
2838 {
2839 uint32_t *savep;
2840 uint32_t attrlen,
2841 bitmap[2] = {0},
2842 type;
2843 int status, fmode = 0;
2844
2845 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2846 goto xdr_error;
2847 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2848 goto xdr_error;
2849
2850 fattr->bitmap[0] = bitmap[0];
2851 fattr->bitmap[1] = bitmap[1];
2852
2853 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2854 goto xdr_error;
2855
2856
2857 if ((status = decode_attr_type(xdr, bitmap, &type)) != 0)
2858 goto xdr_error;
2859 fattr->type = nfs_type2fmt[type].nfs2type;
2860 fmode = nfs_type2fmt[type].mode;
2861
2862 if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0)
2863 goto xdr_error;
2864 if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0)
2865 goto xdr_error;
2866 if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0)
2867 goto xdr_error;
2868 if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0)
2869 goto xdr_error;
2870 if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0)
2871 goto xdr_error;
2872 fattr->mode |= fmode;
2873 if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0)
2874 goto xdr_error;
2875 if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0)
2876 goto xdr_error;
2877 if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0)
2878 goto xdr_error;
2879 if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0)
2880 goto xdr_error;
2881 if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0)
2882 goto xdr_error;
2883 if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0)
2884 goto xdr_error;
2885 if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0)
2886 goto xdr_error;
2887 if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0)
2888 goto xdr_error;
2889 if ((status = verify_attr_len(xdr, savep, attrlen)) == 0)
2890 fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4;
2891 xdr_error:
2892 dprintk("%s: xdr returned %d\n", __FUNCTION__, -status);
2893 return status;
2894 }
2895
2896
2897 static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
2898 {
2899 uint32_t *savep;
2900 uint32_t attrlen, bitmap[2];
2901 int status;
2902
2903 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
2904 goto xdr_error;
2905 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
2906 goto xdr_error;
2907 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
2908 goto xdr_error;
2909
2910 fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */
2911
2912 if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0)
2913 goto xdr_error;
2914 if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0)
2915 goto xdr_error;
2916 if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0)
2917 goto xdr_error;
2918 fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax;
2919 if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0)
2920 goto xdr_error;
2921 fsinfo->wtpref = fsinfo->wtmax;
2922
2923 status = verify_attr_len(xdr, savep, attrlen);
2924 xdr_error:
2925 dprintk("%s: xdr returned %d!\n", __FUNCTION__, -status);
2926 return status;
2927 }
2928
2929 static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
2930 {
2931 uint32_t *p;
2932 uint32_t len;
2933 int status;
2934
2935 status = decode_op_hdr(xdr, OP_GETFH);
2936 if (status)
2937 return status;
2938 /* Zero handle first to allow comparisons */
2939 memset(fh, 0, sizeof(*fh));
2940
2941 READ_BUF(4);
2942 READ32(len);
2943 if (len > NFS4_FHSIZE)
2944 return -EIO;
2945 fh->size = len;
2946 READ_BUF(len);
2947 COPYMEM(fh->data, len);
2948 return 0;
2949 }
2950
2951 static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
2952 {
2953 int status;
2954
2955 status = decode_op_hdr(xdr, OP_LINK);
2956 if (status)
2957 return status;
2958 return decode_change_info(xdr, cinfo);
2959 }
2960
2961 /*
2962 * We create the owner, so we know a proper owner.id length is 4.
2963 */
2964 static int decode_lock_denied (struct xdr_stream *xdr, struct file_lock *fl)
2965 {
2966 uint64_t offset, length, clientid;
2967 uint32_t *p;
2968 uint32_t namelen, type;
2969
2970 READ_BUF(32);
2971 READ64(offset);
2972 READ64(length);
2973 READ32(type);
2974 if (fl != NULL) {
2975 fl->fl_start = (loff_t)offset;
2976 fl->fl_end = fl->fl_start + (loff_t)length - 1;
2977 if (length == ~(uint64_t)0)
2978 fl->fl_end = OFFSET_MAX;
2979 fl->fl_type = F_WRLCK;
2980 if (type & 1)
2981 fl->fl_type = F_RDLCK;
2982 fl->fl_pid = 0;
2983 }
2984 READ64(clientid);
2985 READ32(namelen);
2986 READ_BUF(namelen);
2987 return -NFS4ERR_DENIED;
2988 }
2989
2990 static int decode_lock(struct xdr_stream *xdr, struct nfs_lock_res *res)
2991 {
2992 uint32_t *p;
2993 int status;
2994
2995 status = decode_op_hdr(xdr, OP_LOCK);
2996 if (status == 0) {
2997 READ_BUF(sizeof(res->stateid.data));
2998 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
2999 } else if (status == -NFS4ERR_DENIED)
3000 return decode_lock_denied(xdr, NULL);
3001 return status;
3002 }
3003
3004 static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockt_res *res)
3005 {
3006 int status;
3007 status = decode_op_hdr(xdr, OP_LOCKT);
3008 if (status == -NFS4ERR_DENIED)
3009 return decode_lock_denied(xdr, res->denied);
3010 return status;
3011 }
3012
3013 static int decode_locku(struct xdr_stream *xdr, struct nfs_locku_res *res)
3014 {
3015 uint32_t *p;
3016 int status;
3017
3018 status = decode_op_hdr(xdr, OP_LOCKU);
3019 if (status == 0) {
3020 READ_BUF(sizeof(res->stateid.data));
3021 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3022 }
3023 return status;
3024 }
3025
3026 static int decode_lookup(struct xdr_stream *xdr)
3027 {
3028 return decode_op_hdr(xdr, OP_LOOKUP);
3029 }
3030
3031 /* This is too sick! */
3032 static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize)
3033 {
3034 uint32_t *p;
3035 uint32_t limit_type, nblocks, blocksize;
3036
3037 READ_BUF(12);
3038 READ32(limit_type);
3039 switch (limit_type) {
3040 case 1:
3041 READ64(*maxsize);
3042 break;
3043 case 2:
3044 READ32(nblocks);
3045 READ32(blocksize);
3046 *maxsize = (uint64_t)nblocks * (uint64_t)blocksize;
3047 }
3048 return 0;
3049 }
3050
3051 static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res)
3052 {
3053 uint32_t *p;
3054 uint32_t delegation_type;
3055
3056 READ_BUF(4);
3057 READ32(delegation_type);
3058 if (delegation_type == NFS4_OPEN_DELEGATE_NONE) {
3059 res->delegation_type = 0;
3060 return 0;
3061 }
3062 READ_BUF(20);
3063 COPYMEM(res->delegation.data, sizeof(res->delegation.data));
3064 READ32(res->do_recall);
3065 switch (delegation_type) {
3066 case NFS4_OPEN_DELEGATE_READ:
3067 res->delegation_type = FMODE_READ;
3068 break;
3069 case NFS4_OPEN_DELEGATE_WRITE:
3070 res->delegation_type = FMODE_WRITE|FMODE_READ;
3071 if (decode_space_limit(xdr, &res->maxsize) < 0)
3072 return -EIO;
3073 }
3074 return decode_ace(xdr, NULL, res->server->nfs4_state);
3075 }
3076
3077 static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res)
3078 {
3079 uint32_t *p;
3080 uint32_t bmlen;
3081 int status;
3082
3083 status = decode_op_hdr(xdr, OP_OPEN);
3084 if (status)
3085 return status;
3086 READ_BUF(sizeof(res->stateid.data));
3087 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3088
3089 decode_change_info(xdr, &res->cinfo);
3090
3091 READ_BUF(8);
3092 READ32(res->rflags);
3093 READ32(bmlen);
3094 if (bmlen > 10)
3095 goto xdr_error;
3096
3097 READ_BUF(bmlen << 2);
3098 p += bmlen;
3099 return decode_delegation(xdr, res);
3100 xdr_error:
3101 dprintk("%s: Bitmap too large! Length = %u\n", __FUNCTION__, bmlen);
3102 return -EIO;
3103 }
3104
3105 static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res)
3106 {
3107 uint32_t *p;
3108 int status;
3109
3110 status = decode_op_hdr(xdr, OP_OPEN_CONFIRM);
3111 if (status)
3112 return status;
3113 READ_BUF(sizeof(res->stateid.data));
3114 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3115 return 0;
3116 }
3117
3118 static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res)
3119 {
3120 uint32_t *p;
3121 int status;
3122
3123 status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE);
3124 if (status)
3125 return status;
3126 READ_BUF(sizeof(res->stateid.data));
3127 COPYMEM(res->stateid.data, sizeof(res->stateid.data));
3128 return 0;
3129 }
3130
3131 static int decode_putfh(struct xdr_stream *xdr)
3132 {
3133 return decode_op_hdr(xdr, OP_PUTFH);
3134 }
3135
3136 static int decode_putrootfh(struct xdr_stream *xdr)
3137 {
3138 return decode_op_hdr(xdr, OP_PUTROOTFH);
3139 }
3140
3141 static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res)
3142 {
3143 struct kvec *iov = req->rq_rcv_buf.head;
3144 uint32_t *p;
3145 uint32_t count, eof, recvd, hdrlen;
3146 int status;
3147
3148 status = decode_op_hdr(xdr, OP_READ);
3149 if (status)
3150 return status;
3151 READ_BUF(8);
3152 READ32(eof);
3153 READ32(count);
3154 hdrlen = (u8 *) p - (u8 *) iov->iov_base;
3155 recvd = req->rq_rcv_buf.len - hdrlen;
3156 if (count > recvd) {
3157 printk(KERN_WARNING "NFS: server cheating in read reply: "
3158 "count %u > recvd %u\n", count, recvd);
3159 count = recvd;
3160 eof = 0;
3161 }
3162 xdr_read_pages(xdr, count);
3163 res->eof = eof;
3164 res->count = count;
3165 return 0;
3166 }
3167
3168 static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir)
3169 {
3170 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3171 struct page *page = *rcvbuf->pages;
3172 struct kvec *iov = rcvbuf->head;
3173 unsigned int nr, pglen = rcvbuf->page_len;
3174 uint32_t *end, *entry, *p, *kaddr;
3175 uint32_t len, attrlen;
3176 int hdrlen, recvd, status;
3177
3178 status = decode_op_hdr(xdr, OP_READDIR);
3179 if (status)
3180 return status;
3181 READ_BUF(8);
3182 COPYMEM(readdir->verifier.data, 8);
3183 dprintk("%s: verifier = 0x%x%x\n",
3184 __FUNCTION__,
3185 ((u32 *)readdir->verifier.data)[0],
3186 ((u32 *)readdir->verifier.data)[1]);
3187
3188
3189 hdrlen = (char *) p - (char *) iov->iov_base;
3190 recvd = rcvbuf->len - hdrlen;
3191 if (pglen > recvd)
3192 pglen = recvd;
3193 xdr_read_pages(xdr, pglen);
3194
3195 BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE);
3196 kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0);
3197 end = (uint32_t *) ((char *)p + pglen + readdir->pgbase);
3198 entry = p;
3199 for (nr = 0; *p++; nr++) {
3200 if (p + 3 > end)
3201 goto short_pkt;
3202 dprintk("cookie = %Lu, ", *((unsigned long long *)p));
3203 p += 2; /* cookie */
3204 len = ntohl(*p++); /* filename length */
3205 if (len > NFS4_MAXNAMLEN) {
3206 printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len);
3207 goto err_unmap;
3208 }
3209 dprintk("filename = %*s\n", len, (char *)p);
3210 p += XDR_QUADLEN(len);
3211 if (p + 1 > end)
3212 goto short_pkt;
3213 len = ntohl(*p++); /* bitmap length */
3214 p += len;
3215 if (p + 1 > end)
3216 goto short_pkt;
3217 attrlen = XDR_QUADLEN(ntohl(*p++));
3218 p += attrlen; /* attributes */
3219 if (p + 2 > end)
3220 goto short_pkt;
3221 entry = p;
3222 }
3223 if (!nr && (entry[0] != 0 || entry[1] == 0))
3224 goto short_pkt;
3225 out:
3226 kunmap_atomic(kaddr, KM_USER0);
3227 return 0;
3228 short_pkt:
3229 dprintk("%s: short packet at entry %d\n", __FUNCTION__, nr);
3230 entry[0] = entry[1] = 0;
3231 /* truncate listing ? */
3232 if (!nr) {
3233 printk(KERN_NOTICE "NFS: readdir reply truncated!\n");
3234 entry[1] = 1;
3235 }
3236 goto out;
3237 err_unmap:
3238 kunmap_atomic(kaddr, KM_USER0);
3239 return -errno_NFSERR_IO;
3240 }
3241
3242 static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
3243 {
3244 struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
3245 struct kvec *iov = rcvbuf->head;
3246 int hdrlen, len, recvd;
3247 uint32_t *p;
3248 char *kaddr;
3249 int status;
3250
3251 status = decode_op_hdr(xdr, OP_READLINK);
3252 if (status)
3253 return status;
3254
3255 /* Convert length of symlink */
3256 READ_BUF(4);
3257 READ32(len);
3258 if (len >= rcvbuf->page_len || len <= 0) {
3259 dprintk(KERN_WARNING "nfs: server returned giant symlink!\n");
3260 return -ENAMETOOLONG;
3261 }
3262 hdrlen = (char *) xdr->p - (char *) iov->iov_base;
3263 recvd = req->rq_rcv_buf.len - hdrlen;
3264 if (recvd < len) {
3265 printk(KERN_WARNING "NFS: server cheating in readlink reply: "
3266 "count %u > recvd %u\n", len, recvd);
3267 return -EIO;
3268 }
3269 xdr_read_pages(xdr, len);
3270 /*
3271 * The XDR encode routine has set things up so that
3272 * the link text will be copied directly into the
3273 * buffer. We just have to do overflow-checking,
3274 * and and null-terminate the text (the VFS expects
3275 * null-termination).
3276 */
3277 kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0);
3278 kaddr[len+rcvbuf->page_base] = '\0';
3279 kunmap_atomic(kaddr, KM_USER0);
3280 return 0;
3281 }
3282
3283 static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo)
3284 {
3285 int status;
3286
3287 status = decode_op_hdr(xdr, OP_REMOVE);
3288 if (status)
3289 goto out;
3290 status = decode_change_info(xdr, cinfo);
3291 out:
3292 return status;
3293 }
3294
3295 static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo,
3296 struct nfs4_change_info *new_cinfo)
3297 {
3298 int status;
3299
3300 status = decode_op_hdr(xdr, OP_RENAME);
3301 if (status)
3302 goto out;
3303 if ((status = decode_change_info(xdr, old_cinfo)))
3304 goto out;
3305 status = decode_change_info(xdr, new_cinfo);
3306 out:
3307 return status;
3308 }
3309
3310 static int decode_renew(struct xdr_stream *xdr)
3311 {
3312 return decode_op_hdr(xdr, OP_RENEW);
3313 }
3314
3315 static int
3316 decode_restorefh(struct xdr_stream *xdr)
3317 {
3318 return decode_op_hdr(xdr, OP_RESTOREFH);
3319 }
3320
3321 static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
3322 size_t *acl_len)
3323 {
3324 uint32_t *savep;
3325 uint32_t attrlen,
3326 bitmap[2] = {0};
3327 struct kvec *iov = req->rq_rcv_buf.head;
3328 int status;
3329
3330 *acl_len = 0;
3331 if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0)
3332 goto out;
3333 if ((status = decode_attr_bitmap(xdr, bitmap)) != 0)
3334 goto out;
3335 if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0)
3336 goto out;
3337
3338 if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
3339 return -EIO;
3340 if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
3341 int hdrlen, recvd;
3342
3343 /* We ignore &savep and don't do consistency checks on
3344 * the attr length. Let userspace figure it out.... */
3345 hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base;
3346 recvd = req->rq_rcv_buf.len - hdrlen;
3347 if (attrlen > recvd) {
3348 printk(KERN_WARNING "NFS: server cheating in getattr"
3349 " acl reply: attrlen %u > recvd %u\n",
3350 attrlen, recvd);
3351 return -EINVAL;
3352 }
3353 if (attrlen <= *acl_len)
3354 xdr_read_pages(xdr, attrlen);
3355 *acl_len = attrlen;
3356 } else
3357 status = -EOPNOTSUPP;
3358
3359 out:
3360 return status;
3361 }
3362
3363 static int
3364 decode_savefh(struct xdr_stream *xdr)
3365 {
3366 return decode_op_hdr(xdr, OP_SAVEFH);
3367 }
3368
3369 static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res)
3370 {
3371 uint32_t *p;
3372 uint32_t bmlen;
3373 int status;
3374
3375
3376 status = decode_op_hdr(xdr, OP_SETATTR);
3377 if (status)
3378 return status;
3379 READ_BUF(4);
3380 READ32(bmlen);
3381 READ_BUF(bmlen << 2);
3382 return 0;
3383 }
3384
3385 static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp)
3386 {
3387 uint32_t *p;
3388 uint32_t opnum;
3389 int32_t nfserr;
3390
3391 READ_BUF(8);
3392 READ32(opnum);
3393 if (opnum != OP_SETCLIENTID) {
3394 printk(KERN_NOTICE
3395 "nfs4_decode_setclientid: Server returned operation"
3396 " %d\n", opnum);
3397 return -EIO;
3398 }
3399 READ32(nfserr);
3400 if (nfserr == NFS_OK) {
3401 READ_BUF(8 + sizeof(clp->cl_confirm.data));
3402 READ64(clp->cl_clientid);
3403 COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data));
3404 } else if (nfserr == NFSERR_CLID_INUSE) {
3405 uint32_t len;
3406
3407 /* skip netid string */
3408 READ_BUF(4);
3409 READ32(len);
3410 READ_BUF(len);
3411
3412 /* skip uaddr string */
3413 READ_BUF(4);
3414 READ32(len);
3415 READ_BUF(len);
3416 return -NFSERR_CLID_INUSE;
3417 } else
3418 return -nfs_stat_to_errno(nfserr);
3419
3420 return 0;
3421 }
3422
3423 static int decode_setclientid_confirm(struct xdr_stream *xdr)
3424 {
3425 return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM);
3426 }
3427
3428 static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res)
3429 {
3430 uint32_t *p;
3431 int status;
3432
3433 status = decode_op_hdr(xdr, OP_WRITE);
3434 if (status)
3435 return status;
3436
3437 READ_BUF(16);
3438 READ32(res->count);
3439 READ32(res->verf->committed);
3440 COPYMEM(res->verf->verifier, 8);
3441 return 0;
3442 }
3443
3444 static int decode_delegreturn(struct xdr_stream *xdr)
3445 {
3446 return decode_op_hdr(xdr, OP_DELEGRETURN);
3447 }
3448
3449 /*
3450 * Decode OPEN_DOWNGRADE response
3451 */
3452 static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3453 {
3454 struct xdr_stream xdr;
3455 struct compound_hdr hdr;
3456 int status;
3457
3458 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3459 status = decode_compound_hdr(&xdr, &hdr);
3460 if (status)
3461 goto out;
3462 status = decode_putfh(&xdr);
3463 if (status)
3464 goto out;
3465 status = decode_open_downgrade(&xdr, res);
3466 if (status != 0)
3467 goto out;
3468 decode_getfattr(&xdr, res->fattr, res->server);
3469 out:
3470 return status;
3471 }
3472
3473 /*
3474 * END OF "GENERIC" DECODE ROUTINES.
3475 */
3476
3477 /*
3478 * Decode ACCESS response
3479 */
3480 static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res)
3481 {
3482 struct xdr_stream xdr;
3483 struct compound_hdr hdr;
3484 int status;
3485
3486 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3487 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3488 goto out;
3489 if ((status = decode_putfh(&xdr)) == 0)
3490 status = decode_access(&xdr, res);
3491 out:
3492 return status;
3493 }
3494
3495 /*
3496 * Decode LOOKUP response
3497 */
3498 static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3499 {
3500 struct xdr_stream xdr;
3501 struct compound_hdr hdr;
3502 int status;
3503
3504 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3505 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3506 goto out;
3507 if ((status = decode_putfh(&xdr)) != 0)
3508 goto out;
3509 if ((status = decode_lookup(&xdr)) != 0)
3510 goto out;
3511 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3512 goto out;
3513 status = decode_getfattr(&xdr, res->fattr, res->server);
3514 out:
3515 return status;
3516 }
3517
3518 /*
3519 * Decode LOOKUP_ROOT response
3520 */
3521 static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res)
3522 {
3523 struct xdr_stream xdr;
3524 struct compound_hdr hdr;
3525 int status;
3526
3527 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3528 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3529 goto out;
3530 if ((status = decode_putrootfh(&xdr)) != 0)
3531 goto out;
3532 if ((status = decode_getfh(&xdr, res->fh)) == 0)
3533 status = decode_getfattr(&xdr, res->fattr, res->server);
3534 out:
3535 return status;
3536 }
3537
3538 /*
3539 * Decode REMOVE response
3540 */
3541 static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_remove_res *res)
3542 {
3543 struct xdr_stream xdr;
3544 struct compound_hdr hdr;
3545 int status;
3546
3547 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3548 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3549 goto out;
3550 if ((status = decode_putfh(&xdr)) != 0)
3551 goto out;
3552 if ((status = decode_remove(&xdr, &res->cinfo)) != 0)
3553 goto out;
3554 decode_getfattr(&xdr, res->dir_attr, res->server);
3555 out:
3556 return status;
3557 }
3558
3559 /*
3560 * Decode RENAME response
3561 */
3562 static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res)
3563 {
3564 struct xdr_stream xdr;
3565 struct compound_hdr hdr;
3566 int status;
3567
3568 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3569 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3570 goto out;
3571 if ((status = decode_putfh(&xdr)) != 0)
3572 goto out;
3573 if ((status = decode_savefh(&xdr)) != 0)
3574 goto out;
3575 if ((status = decode_putfh(&xdr)) != 0)
3576 goto out;
3577 if ((status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo)) != 0)
3578 goto out;
3579 /* Current FH is target directory */
3580 if (decode_getfattr(&xdr, res->new_fattr, res->server) != 0)
3581 goto out;
3582 if ((status = decode_restorefh(&xdr)) != 0)
3583 goto out;
3584 decode_getfattr(&xdr, res->old_fattr, res->server);
3585 out:
3586 return status;
3587 }
3588
3589 /*
3590 * Decode LINK response
3591 */
3592 static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_link_res *res)
3593 {
3594 struct xdr_stream xdr;
3595 struct compound_hdr hdr;
3596 int status;
3597
3598 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3599 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3600 goto out;
3601 if ((status = decode_putfh(&xdr)) != 0)
3602 goto out;
3603 if ((status = decode_savefh(&xdr)) != 0)
3604 goto out;
3605 if ((status = decode_putfh(&xdr)) != 0)
3606 goto out;
3607 if ((status = decode_link(&xdr, &res->cinfo)) != 0)
3608 goto out;
3609 /*
3610 * Note order: OP_LINK leaves the directory as the current
3611 * filehandle.
3612 */
3613 if (decode_getfattr(&xdr, res->dir_attr, res->server) != 0)
3614 goto out;
3615 if ((status = decode_restorefh(&xdr)) != 0)
3616 goto out;
3617 decode_getfattr(&xdr, res->fattr, res->server);
3618 out:
3619 return status;
3620 }
3621
3622 /*
3623 * Decode CREATE response
3624 */
3625 static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3626 {
3627 struct xdr_stream xdr;
3628 struct compound_hdr hdr;
3629 int status;
3630
3631 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3632 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
3633 goto out;
3634 if ((status = decode_putfh(&xdr)) != 0)
3635 goto out;
3636 if ((status = decode_savefh(&xdr)) != 0)
3637 goto out;
3638 if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0)
3639 goto out;
3640 if ((status = decode_getfh(&xdr, res->fh)) != 0)
3641 goto out;
3642 if (decode_getfattr(&xdr, res->fattr, res->server) != 0)
3643 goto out;
3644 if ((status = decode_restorefh(&xdr)) != 0)
3645 goto out;
3646 decode_getfattr(&xdr, res->dir_fattr, res->server);
3647 out:
3648 return status;
3649 }
3650
3651 /*
3652 * Decode SYMLINK response
3653 */
3654 static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res)
3655 {
3656 return nfs4_xdr_dec_create(rqstp, p, res);
3657 }
3658
3659 /*
3660 * Decode GETATTR response
3661 */
3662 static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res)
3663 {
3664 struct xdr_stream xdr;
3665 struct compound_hdr hdr;
3666 int status;
3667
3668 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3669 status = decode_compound_hdr(&xdr, &hdr);
3670 if (status)
3671 goto out;
3672 status = decode_putfh(&xdr);
3673 if (status)
3674 goto out;
3675 status = decode_getfattr(&xdr, res->fattr, res->server);
3676 out:
3677 return status;
3678
3679 }
3680
3681 /*
3682 * Encode an SETACL request
3683 */
3684 static int
3685 nfs4_xdr_enc_setacl(struct rpc_rqst *req, uint32_t *p, struct nfs_setaclargs *args)
3686 {
3687 struct xdr_stream xdr;
3688 struct compound_hdr hdr = {
3689 .nops = 2,
3690 };
3691 int status;
3692
3693 xdr_init_encode(&xdr, &req->rq_snd_buf, p);
3694 encode_compound_hdr(&xdr, &hdr);
3695 status = encode_putfh(&xdr, args->fh);
3696 if (status)
3697 goto out;
3698 status = encode_setacl(&xdr, args);
3699 out:
3700 return status;
3701 }
3702 /*
3703 * Decode SETACL response
3704 */
3705 static int
3706 nfs4_xdr_dec_setacl(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3707 {
3708 struct xdr_stream xdr;
3709 struct compound_hdr hdr;
3710 int status;
3711
3712 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3713 status = decode_compound_hdr(&xdr, &hdr);
3714 if (status)
3715 goto out;
3716 status = decode_putfh(&xdr);
3717 if (status)
3718 goto out;
3719 status = decode_setattr(&xdr, res);
3720 out:
3721 return status;
3722 }
3723
3724 /*
3725 * Decode GETACL response
3726 */
3727 static int
3728 nfs4_xdr_dec_getacl(struct rpc_rqst *rqstp, uint32_t *p, size_t *acl_len)
3729 {
3730 struct xdr_stream xdr;
3731 struct compound_hdr hdr;
3732 int status;
3733
3734 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3735 status = decode_compound_hdr(&xdr, &hdr);
3736 if (status)
3737 goto out;
3738 status = decode_putfh(&xdr);
3739 if (status)
3740 goto out;
3741 status = decode_getacl(&xdr, rqstp, acl_len);
3742
3743 out:
3744 return status;
3745 }
3746
3747 /*
3748 * Decode CLOSE response
3749 */
3750 static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res)
3751 {
3752 struct xdr_stream xdr;
3753 struct compound_hdr hdr;
3754 int status;
3755
3756 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3757 status = decode_compound_hdr(&xdr, &hdr);
3758 if (status)
3759 goto out;
3760 status = decode_putfh(&xdr);
3761 if (status)
3762 goto out;
3763 status = decode_close(&xdr, res);
3764 if (status != 0)
3765 goto out;
3766 /*
3767 * Note: Server may do delete on close for this file
3768 * in which case the getattr call will fail with
3769 * an ESTALE error. Shouldn't be a problem,
3770 * though, since fattr->valid will remain unset.
3771 */
3772 decode_getfattr(&xdr, res->fattr, res->server);
3773 out:
3774 return status;
3775 }
3776
3777 /*
3778 * Decode OPEN response
3779 */
3780 static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3781 {
3782 struct xdr_stream xdr;
3783 struct compound_hdr hdr;
3784 int status;
3785
3786 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3787 status = decode_compound_hdr(&xdr, &hdr);
3788 if (status)
3789 goto out;
3790 status = decode_putfh(&xdr);
3791 if (status)
3792 goto out;
3793 status = decode_savefh(&xdr);
3794 if (status)
3795 goto out;
3796 status = decode_open(&xdr, res);
3797 if (status)
3798 goto out;
3799 status = decode_getfh(&xdr, &res->fh);
3800 if (status)
3801 goto out;
3802 if (decode_getfattr(&xdr, res->f_attr, res->server) != 0)
3803 goto out;
3804 if ((status = decode_restorefh(&xdr)) != 0)
3805 goto out;
3806 decode_getfattr(&xdr, res->dir_attr, res->server);
3807 out:
3808 return status;
3809 }
3810
3811 /*
3812 * Decode OPEN_CONFIRM response
3813 */
3814 static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res)
3815 {
3816 struct xdr_stream xdr;
3817 struct compound_hdr hdr;
3818 int status;
3819
3820 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3821 status = decode_compound_hdr(&xdr, &hdr);
3822 if (status)
3823 goto out;
3824 status = decode_putfh(&xdr);
3825 if (status)
3826 goto out;
3827 status = decode_open_confirm(&xdr, res);
3828 out:
3829 return status;
3830 }
3831
3832 /*
3833 * Decode OPEN response
3834 */
3835 static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res)
3836 {
3837 struct xdr_stream xdr;
3838 struct compound_hdr hdr;
3839 int status;
3840
3841 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3842 status = decode_compound_hdr(&xdr, &hdr);
3843 if (status)
3844 goto out;
3845 status = decode_putfh(&xdr);
3846 if (status)
3847 goto out;
3848 status = decode_open(&xdr, res);
3849 if (status)
3850 goto out;
3851 decode_getfattr(&xdr, res->f_attr, res->server);
3852 out:
3853 return status;
3854 }
3855
3856 /*
3857 * Decode SETATTR response
3858 */
3859 static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res)
3860 {
3861 struct xdr_stream xdr;
3862 struct compound_hdr hdr;
3863 int status;
3864
3865 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3866 status = decode_compound_hdr(&xdr, &hdr);
3867 if (status)
3868 goto out;
3869 status = decode_putfh(&xdr);
3870 if (status)
3871 goto out;
3872 status = decode_setattr(&xdr, res);
3873 if (status)
3874 goto out;
3875 status = decode_getfattr(&xdr, res->fattr, res->server);
3876 if (status == NFS4ERR_DELAY)
3877 status = 0;
3878 out:
3879 return status;
3880 }
3881
3882 /*
3883 * Decode LOCK response
3884 */
3885 static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lock_res *res)
3886 {
3887 struct xdr_stream xdr;
3888 struct compound_hdr hdr;
3889 int status;
3890
3891 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3892 status = decode_compound_hdr(&xdr, &hdr);
3893 if (status)
3894 goto out;
3895 status = decode_putfh(&xdr);
3896 if (status)
3897 goto out;
3898 status = decode_lock(&xdr, res);
3899 out:
3900 return status;
3901 }
3902
3903 /*
3904 * Decode LOCKT response
3905 */
3906 static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockt_res *res)
3907 {
3908 struct xdr_stream xdr;
3909 struct compound_hdr hdr;
3910 int status;
3911
3912 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3913 status = decode_compound_hdr(&xdr, &hdr);
3914 if (status)
3915 goto out;
3916 status = decode_putfh(&xdr);
3917 if (status)
3918 goto out;
3919 status = decode_lockt(&xdr, res);
3920 out:
3921 return status;
3922 }
3923
3924 /*
3925 * Decode LOCKU response
3926 */
3927 static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_locku_res *res)
3928 {
3929 struct xdr_stream xdr;
3930 struct compound_hdr hdr;
3931 int status;
3932
3933 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3934 status = decode_compound_hdr(&xdr, &hdr);
3935 if (status)
3936 goto out;
3937 status = decode_putfh(&xdr);
3938 if (status)
3939 goto out;
3940 status = decode_locku(&xdr, res);
3941 out:
3942 return status;
3943 }
3944
3945 /*
3946 * Decode READLINK response
3947 */
3948 static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res)
3949 {
3950 struct xdr_stream xdr;
3951 struct compound_hdr hdr;
3952 int status;
3953
3954 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3955 status = decode_compound_hdr(&xdr, &hdr);
3956 if (status)
3957 goto out;
3958 status = decode_putfh(&xdr);
3959 if (status)
3960 goto out;
3961 status = decode_readlink(&xdr, rqstp);
3962 out:
3963 return status;
3964 }
3965
3966 /*
3967 * Decode READDIR response
3968 */
3969 static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res)
3970 {
3971 struct xdr_stream xdr;
3972 struct compound_hdr hdr;
3973 int status;
3974
3975 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3976 status = decode_compound_hdr(&xdr, &hdr);
3977 if (status)
3978 goto out;
3979 status = decode_putfh(&xdr);
3980 if (status)
3981 goto out;
3982 status = decode_readdir(&xdr, rqstp, res);
3983 out:
3984 return status;
3985 }
3986
3987 /*
3988 * Decode Read response
3989 */
3990 static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res)
3991 {
3992 struct xdr_stream xdr;
3993 struct compound_hdr hdr;
3994 int status;
3995
3996 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
3997 status = decode_compound_hdr(&xdr, &hdr);
3998 if (status)
3999 goto out;
4000 status = decode_putfh(&xdr);
4001 if (status)
4002 goto out;
4003 status = decode_read(&xdr, rqstp, res);
4004 if (!status)
4005 status = res->count;
4006 out:
4007 return status;
4008 }
4009
4010 /*
4011 * Decode WRITE response
4012 */
4013 static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4014 {
4015 struct xdr_stream xdr;
4016 struct compound_hdr hdr;
4017 int status;
4018
4019 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4020 status = decode_compound_hdr(&xdr, &hdr);
4021 if (status)
4022 goto out;
4023 status = decode_putfh(&xdr);
4024 if (status)
4025 goto out;
4026 status = decode_write(&xdr, res);
4027 if (status)
4028 goto out;
4029 decode_getfattr(&xdr, res->fattr, res->server);
4030 if (!status)
4031 status = res->count;
4032 out:
4033 return status;
4034 }
4035
4036 /*
4037 * Decode COMMIT response
4038 */
4039 static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res)
4040 {
4041 struct xdr_stream xdr;
4042 struct compound_hdr hdr;
4043 int status;
4044
4045 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4046 status = decode_compound_hdr(&xdr, &hdr);
4047 if (status)
4048 goto out;
4049 status = decode_putfh(&xdr);
4050 if (status)
4051 goto out;
4052 status = decode_commit(&xdr, res);
4053 if (status)
4054 goto out;
4055 decode_getfattr(&xdr, res->fattr, res->server);
4056 out:
4057 return status;
4058 }
4059
4060 /*
4061 * FSINFO request
4062 */
4063 static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4064 {
4065 struct xdr_stream xdr;
4066 struct compound_hdr hdr;
4067 int status;
4068
4069 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4070 status = decode_compound_hdr(&xdr, &hdr);
4071 if (!status)
4072 status = decode_putfh(&xdr);
4073 if (!status)
4074 status = decode_fsinfo(&xdr, fsinfo);
4075 if (!status)
4076 status = -nfs_stat_to_errno(hdr.status);
4077 return status;
4078 }
4079
4080 /*
4081 * PATHCONF request
4082 */
4083 static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf)
4084 {
4085 struct xdr_stream xdr;
4086 struct compound_hdr hdr;
4087 int status;
4088
4089 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4090 status = decode_compound_hdr(&xdr, &hdr);
4091 if (!status)
4092 status = decode_putfh(&xdr);
4093 if (!status)
4094 status = decode_pathconf(&xdr, pathconf);
4095 return status;
4096 }
4097
4098 /*
4099 * STATFS request
4100 */
4101 static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat)
4102 {
4103 struct xdr_stream xdr;
4104 struct compound_hdr hdr;
4105 int status;
4106
4107 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4108 status = decode_compound_hdr(&xdr, &hdr);
4109 if (!status)
4110 status = decode_putfh(&xdr);
4111 if (!status)
4112 status = decode_statfs(&xdr, fsstat);
4113 return status;
4114 }
4115
4116 /*
4117 * GETATTR_BITMAP request
4118 */
4119 static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res)
4120 {
4121 struct xdr_stream xdr;
4122 struct compound_hdr hdr;
4123 int status;
4124
4125 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4126 if ((status = decode_compound_hdr(&xdr, &hdr)) != 0)
4127 goto out;
4128 if ((status = decode_putfh(&xdr)) != 0)
4129 goto out;
4130 status = decode_server_caps(&xdr, res);
4131 out:
4132 return status;
4133 }
4134
4135 /*
4136 * Decode RENEW response
4137 */
4138 static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy)
4139 {
4140 struct xdr_stream xdr;
4141 struct compound_hdr hdr;
4142 int status;
4143
4144 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4145 status = decode_compound_hdr(&xdr, &hdr);
4146 if (!status)
4147 status = decode_renew(&xdr);
4148 return status;
4149 }
4150
4151 /*
4152 * a SETCLIENTID request
4153 */
4154 static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p,
4155 struct nfs4_client *clp)
4156 {
4157 struct xdr_stream xdr;
4158 struct compound_hdr hdr;
4159 int status;
4160
4161 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4162 status = decode_compound_hdr(&xdr, &hdr);
4163 if (!status)
4164 status = decode_setclientid(&xdr, clp);
4165 if (!status)
4166 status = -nfs_stat_to_errno(hdr.status);
4167 return status;
4168 }
4169
4170 /*
4171 * a SETCLIENTID_CONFIRM request
4172 */
4173 static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo)
4174 {
4175 struct xdr_stream xdr;
4176 struct compound_hdr hdr;
4177 int status;
4178
4179 xdr_init_decode(&xdr, &req->rq_rcv_buf, p);
4180 status = decode_compound_hdr(&xdr, &hdr);
4181 if (!status)
4182 status = decode_setclientid_confirm(&xdr);
4183 if (!status)
4184 status = decode_putrootfh(&xdr);
4185 if (!status)
4186 status = decode_fsinfo(&xdr, fsinfo);
4187 if (!status)
4188 status = -nfs_stat_to_errno(hdr.status);
4189 return status;
4190 }
4191
4192 /*
4193 * DELEGRETURN request
4194 */
4195 static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_delegreturnres *res)
4196 {
4197 struct xdr_stream xdr;
4198 struct compound_hdr hdr;
4199 int status;
4200
4201 xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p);
4202 status = decode_compound_hdr(&xdr, &hdr);
4203 if (status != 0)
4204 goto out;
4205 status = decode_putfh(&xdr);
4206 if (status != 0)
4207 goto out;
4208 status = decode_delegreturn(&xdr);
4209 decode_getfattr(&xdr, res->fattr, res->server);
4210 out:
4211 return status;
4212 }
4213
4214 uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus)
4215 {
4216 uint32_t bitmap[2] = {0};
4217 uint32_t len;
4218
4219 if (!*p++) {
4220 if (!*p)
4221 return ERR_PTR(-EAGAIN);
4222 entry->eof = 1;
4223 return ERR_PTR(-EBADCOOKIE);
4224 }
4225
4226 entry->prev_cookie = entry->cookie;
4227 p = xdr_decode_hyper(p, &entry->cookie);
4228 entry->len = ntohl(*p++);
4229 entry->name = (const char *) p;
4230 p += XDR_QUADLEN(entry->len);
4231
4232 /*
4233 * In case the server doesn't return an inode number,
4234 * we fake one here. (We don't use inode number 0,
4235 * since glibc seems to choke on it...)
4236 */
4237 entry->ino = 1;
4238
4239 len = ntohl(*p++); /* bitmap length */
4240 if (len-- > 0) {
4241 bitmap[0] = ntohl(*p++);
4242 if (len-- > 0) {
4243 bitmap[1] = ntohl(*p++);
4244 p += len;
4245 }
4246 }
4247 len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
4248 if (len > 0) {
4249 if (bitmap[0] & FATTR4_WORD0_RDATTR_ERROR) {
4250 bitmap[0] &= ~FATTR4_WORD0_RDATTR_ERROR;
4251 /* Ignore the return value of rdattr_error for now */
4252 p++;
4253 len--;
4254 }
4255 if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID)
4256 xdr_decode_hyper(p, &entry->ino);
4257 else if (bitmap[0] == FATTR4_WORD0_FILEID)
4258 xdr_decode_hyper(p, &entry->ino);
4259 p += len;
4260 }
4261
4262 entry->eof = !p[0] && p[1];
4263 return p;
4264 }
4265
4266 /*
4267 * We need to translate between nfs status return values and
4268 * the local errno values which may not be the same.
4269 */
4270 static struct {
4271 int stat;
4272 int errno;
4273 } nfs_errtbl[] = {
4274 { NFS4_OK, 0 },
4275 { NFS4ERR_PERM, EPERM },
4276 { NFS4ERR_NOENT, ENOENT },
4277 { NFS4ERR_IO, errno_NFSERR_IO },
4278 { NFS4ERR_NXIO, ENXIO },
4279 { NFS4ERR_ACCESS, EACCES },
4280 { NFS4ERR_EXIST, EEXIST },
4281 { NFS4ERR_XDEV, EXDEV },
4282 { NFS4ERR_NOTDIR, ENOTDIR },
4283 { NFS4ERR_ISDIR, EISDIR },
4284 { NFS4ERR_INVAL, EINVAL },
4285 { NFS4ERR_FBIG, EFBIG },
4286 { NFS4ERR_NOSPC, ENOSPC },
4287 { NFS4ERR_ROFS, EROFS },
4288 { NFS4ERR_MLINK, EMLINK },
4289 { NFS4ERR_NAMETOOLONG, ENAMETOOLONG },
4290 { NFS4ERR_NOTEMPTY, ENOTEMPTY },
4291 { NFS4ERR_DQUOT, EDQUOT },
4292 { NFS4ERR_STALE, ESTALE },
4293 { NFS4ERR_BADHANDLE, EBADHANDLE },
4294 { NFS4ERR_BADOWNER, EINVAL },
4295 { NFS4ERR_BADNAME, EINVAL },
4296 { NFS4ERR_BAD_COOKIE, EBADCOOKIE },
4297 { NFS4ERR_NOTSUPP, ENOTSUPP },
4298 { NFS4ERR_TOOSMALL, ETOOSMALL },
4299 { NFS4ERR_SERVERFAULT, ESERVERFAULT },
4300 { NFS4ERR_BADTYPE, EBADTYPE },
4301 { NFS4ERR_LOCKED, EAGAIN },
4302 { NFS4ERR_RESOURCE, EREMOTEIO },
4303 { NFS4ERR_SYMLINK, ELOOP },
4304 { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP },
4305 { NFS4ERR_DEADLOCK, EDEADLK },
4306 { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs
4307 * to be handled by a
4308 * middle-layer.
4309 */
4310 { -1, EIO }
4311 };
4312
4313 /*
4314 * Convert an NFS error code to a local one.
4315 * This one is used jointly by NFSv2 and NFSv3.
4316 */
4317 static int
4318 nfs_stat_to_errno(int stat)
4319 {
4320 int i;
4321 for (i = 0; nfs_errtbl[i].stat != -1; i++) {
4322 if (nfs_errtbl[i].stat == stat)
4323 return nfs_errtbl[i].errno;
4324 }
4325 if (stat <= 10000 || stat > 10100) {
4326 /* The server is looney tunes. */
4327 return ESERVERFAULT;
4328 }
4329 /* If we cannot translate the error, the recovery routines should
4330 * handle it.
4331 * Note: remaining NFSv4 error codes have values > 10000, so should
4332 * not conflict with native Linux error codes.
4333 */
4334 return stat;
4335 }
4336
4337 #ifndef MAX
4338 # define MAX(a, b) (((a) > (b))? (a) : (b))
4339 #endif
4340
4341 #define PROC(proc, argtype, restype) \
4342 [NFSPROC4_CLNT_##proc] = { \
4343 .p_proc = NFSPROC4_COMPOUND, \
4344 .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \
4345 .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \
4346 .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \
4347 }
4348
4349 struct rpc_procinfo nfs4_procedures[] = {
4350 PROC(READ, enc_read, dec_read),
4351 PROC(WRITE, enc_write, dec_write),
4352 PROC(COMMIT, enc_commit, dec_commit),
4353 PROC(OPEN, enc_open, dec_open),
4354 PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm),
4355 PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr),
4356 PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade),
4357 PROC(CLOSE, enc_close, dec_close),
4358 PROC(SETATTR, enc_setattr, dec_setattr),
4359 PROC(FSINFO, enc_fsinfo, dec_fsinfo),
4360 PROC(RENEW, enc_renew, dec_renew),
4361 PROC(SETCLIENTID, enc_setclientid, dec_setclientid),
4362 PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm),
4363 PROC(LOCK, enc_lock, dec_lock),
4364 PROC(LOCKT, enc_lockt, dec_lockt),
4365 PROC(LOCKU, enc_locku, dec_locku),
4366 PROC(ACCESS, enc_access, dec_access),
4367 PROC(GETATTR, enc_getattr, dec_getattr),
4368 PROC(LOOKUP, enc_lookup, dec_lookup),
4369 PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root),
4370 PROC(REMOVE, enc_remove, dec_remove),
4371 PROC(RENAME, enc_rename, dec_rename),
4372 PROC(LINK, enc_link, dec_link),
4373 PROC(SYMLINK, enc_symlink, dec_symlink),
4374 PROC(CREATE, enc_create, dec_create),
4375 PROC(PATHCONF, enc_pathconf, dec_pathconf),
4376 PROC(STATFS, enc_statfs, dec_statfs),
4377 PROC(READLINK, enc_readlink, dec_readlink),
4378 PROC(READDIR, enc_readdir, dec_readdir),
4379 PROC(SERVER_CAPS, enc_server_caps, dec_server_caps),
4380 PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn),
4381 PROC(GETACL, enc_getacl, dec_getacl),
4382 PROC(SETACL, enc_setacl, dec_setacl),
4383 };
4384
4385 struct rpc_version nfs_version4 = {
4386 .number = 4,
4387 .nrprocs = ARRAY_SIZE(nfs4_procedures),
4388 .procs = nfs4_procedures
4389 };
4390
4391 /*
4392 * Local variables:
4393 * c-basic-offset: 8
4394 * End:
4395 */
Support for the Chinese Samsung S3C2440 based development boards