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1da177e4 LT |
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> | |
4ce79717 | 54 | #include "nfs4_fs.h" |
1da177e4 LT |
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)) | |
96928206 BF |
86 | #define nfs4_fattr_bitmap_maxsz 3 |
87 | #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) | |
1da177e4 LT |
88 | #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) |
89 | #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) | |
96928206 BF |
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) | |
1da177e4 LT |
96 | #define encode_savefh_maxsz (op_encode_hdr_maxsz) |
97 | #define decode_savefh_maxsz (op_decode_hdr_maxsz) | |
98 | #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2) | |
99 | #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11) | |
100 | #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) | |
101 | #define decode_renew_maxsz (op_decode_hdr_maxsz) | |
102 | #define encode_setclientid_maxsz \ | |
103 | (op_encode_hdr_maxsz + \ | |
104 | 4 /*server->ip_addr*/ + \ | |
105 | 1 /*Netid*/ + \ | |
106 | 6 /*uaddr*/ + \ | |
107 | 6 + (NFS4_VERIFIER_SIZE >> 2)) | |
108 | #define decode_setclientid_maxsz \ | |
109 | (op_decode_hdr_maxsz + \ | |
110 | 2 + \ | |
111 | 1024) /* large value for CLID_INUSE */ | |
112 | #define encode_setclientid_confirm_maxsz \ | |
113 | (op_encode_hdr_maxsz + \ | |
114 | 3 + (NFS4_VERIFIER_SIZE >> 2)) | |
115 | #define decode_setclientid_confirm_maxsz \ | |
116 | (op_decode_hdr_maxsz) | |
117 | #define encode_lookup_maxsz (op_encode_hdr_maxsz + \ | |
118 | 1 + ((3 + NFS4_FHSIZE) >> 2)) | |
119 | #define encode_remove_maxsz (op_encode_hdr_maxsz + \ | |
120 | nfs4_name_maxsz) | |
121 | #define encode_rename_maxsz (op_encode_hdr_maxsz + \ | |
122 | 2 * nfs4_name_maxsz) | |
123 | #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5) | |
124 | #define encode_link_maxsz (op_encode_hdr_maxsz + \ | |
125 | nfs4_name_maxsz) | |
126 | #define decode_link_maxsz (op_decode_hdr_maxsz + 5) | |
127 | #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ | |
128 | 1 + nfs4_name_maxsz + \ | |
129 | nfs4_path_maxsz + \ | |
96928206 | 130 | nfs4_fattr_maxsz) |
1da177e4 LT |
131 | #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) |
132 | #define encode_create_maxsz (op_encode_hdr_maxsz + \ | |
133 | 2 + nfs4_name_maxsz + \ | |
96928206 | 134 | nfs4_fattr_maxsz) |
1da177e4 LT |
135 | #define decode_create_maxsz (op_decode_hdr_maxsz + 8) |
136 | #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) | |
137 | #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) | |
138 | #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ | |
139 | #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ | |
140 | #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ | |
141 | encode_putfh_maxsz + \ | |
142 | op_encode_hdr_maxsz + 7) | |
143 | #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ | |
144 | decode_putfh_maxsz + \ | |
145 | op_decode_hdr_maxsz + 2) | |
146 | #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ | |
147 | encode_putfh_maxsz + \ | |
148 | op_encode_hdr_maxsz) | |
149 | #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ | |
150 | decode_putfh_maxsz + \ | |
151 | op_decode_hdr_maxsz) | |
152 | #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ | |
153 | encode_putfh_maxsz + \ | |
154 | op_encode_hdr_maxsz + 9) | |
155 | #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ | |
156 | decode_putfh_maxsz + \ | |
157 | op_decode_hdr_maxsz + 2) | |
158 | #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ | |
159 | encode_putfh_maxsz + \ | |
160 | op_encode_hdr_maxsz + 8) | |
161 | #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ | |
162 | decode_putfh_maxsz + \ | |
163 | op_decode_hdr_maxsz + 4) | |
164 | #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ | |
165 | encode_putfh_maxsz + \ | |
166 | op_encode_hdr_maxsz + 3) | |
167 | #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ | |
168 | decode_putfh_maxsz + \ | |
169 | op_decode_hdr_maxsz + 2) | |
170 | #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ | |
171 | encode_putfh_maxsz + \ | |
172 | op_encode_hdr_maxsz + \ | |
173 | 13 + 3 + 2 + 64 + \ | |
174 | encode_getattr_maxsz + \ | |
175 | encode_getfh_maxsz) | |
176 | #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ | |
177 | decode_putfh_maxsz + \ | |
178 | op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \ | |
179 | decode_getattr_maxsz + \ | |
180 | decode_getfh_maxsz) | |
181 | #define NFS4_enc_open_confirm_sz \ | |
182 | (compound_encode_hdr_maxsz + \ | |
183 | encode_putfh_maxsz + \ | |
184 | op_encode_hdr_maxsz + 5) | |
185 | #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \ | |
186 | decode_putfh_maxsz + \ | |
187 | op_decode_hdr_maxsz + 4) | |
188 | #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ | |
189 | encode_putfh_maxsz + \ | |
190 | op_encode_hdr_maxsz + \ | |
191 | 11) | |
192 | #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ | |
193 | decode_putfh_maxsz + \ | |
194 | op_decode_hdr_maxsz + \ | |
195 | 4 + 5 + 2 + 3) | |
196 | #define NFS4_enc_open_downgrade_sz \ | |
197 | (compound_encode_hdr_maxsz + \ | |
198 | encode_putfh_maxsz + \ | |
199 | op_encode_hdr_maxsz + 7) | |
200 | #define NFS4_dec_open_downgrade_sz \ | |
201 | (compound_decode_hdr_maxsz + \ | |
202 | decode_putfh_maxsz + \ | |
203 | op_decode_hdr_maxsz + 4) | |
204 | #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ | |
205 | encode_putfh_maxsz + \ | |
206 | op_encode_hdr_maxsz + 5) | |
207 | #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ | |
208 | decode_putfh_maxsz + \ | |
209 | op_decode_hdr_maxsz + 4) | |
210 | #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ | |
211 | encode_putfh_maxsz + \ | |
212 | op_encode_hdr_maxsz + 4 + \ | |
96928206 | 213 | nfs4_fattr_maxsz + \ |
1da177e4 LT |
214 | encode_getattr_maxsz) |
215 | #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ | |
216 | decode_putfh_maxsz + \ | |
217 | op_decode_hdr_maxsz + 3) | |
218 | #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ | |
219 | encode_putfh_maxsz + \ | |
220 | encode_fsinfo_maxsz) | |
221 | #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ | |
222 | decode_putfh_maxsz + \ | |
223 | decode_fsinfo_maxsz) | |
224 | #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ | |
225 | encode_renew_maxsz) | |
226 | #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ | |
227 | decode_renew_maxsz) | |
228 | #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ | |
229 | encode_setclientid_maxsz) | |
230 | #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ | |
231 | decode_setclientid_maxsz) | |
232 | #define NFS4_enc_setclientid_confirm_sz \ | |
233 | (compound_encode_hdr_maxsz + \ | |
234 | encode_setclientid_confirm_maxsz + \ | |
235 | encode_putrootfh_maxsz + \ | |
236 | encode_fsinfo_maxsz) | |
237 | #define NFS4_dec_setclientid_confirm_sz \ | |
238 | (compound_decode_hdr_maxsz + \ | |
239 | decode_setclientid_confirm_maxsz + \ | |
240 | decode_putrootfh_maxsz + \ | |
241 | decode_fsinfo_maxsz) | |
242 | #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ | |
243 | encode_putfh_maxsz + \ | |
244 | encode_getattr_maxsz + \ | |
245 | op_encode_hdr_maxsz + \ | |
246 | 1 + 1 + 2 + 2 + \ | |
247 | 1 + 4 + 1 + 2 + \ | |
248 | owner_id_maxsz) | |
249 | #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ | |
250 | decode_putfh_maxsz + \ | |
251 | decode_getattr_maxsz + \ | |
252 | op_decode_hdr_maxsz + \ | |
253 | 2 + 2 + 1 + 2 + \ | |
254 | owner_id_maxsz) | |
255 | #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ | |
256 | encode_putfh_maxsz + \ | |
257 | encode_getattr_maxsz + \ | |
258 | op_encode_hdr_maxsz + \ | |
259 | 1 + 2 + 2 + 2 + \ | |
260 | owner_id_maxsz) | |
261 | #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz) | |
262 | #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ | |
263 | encode_putfh_maxsz + \ | |
264 | encode_getattr_maxsz + \ | |
265 | op_encode_hdr_maxsz + \ | |
266 | 1 + 1 + 4 + 2 + 2) | |
267 | #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ | |
268 | decode_putfh_maxsz + \ | |
269 | decode_getattr_maxsz + \ | |
270 | op_decode_hdr_maxsz + 4) | |
271 | #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ | |
272 | encode_putfh_maxsz + \ | |
273 | op_encode_hdr_maxsz + 1) | |
274 | #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ | |
275 | decode_putfh_maxsz + \ | |
276 | op_decode_hdr_maxsz + 2) | |
277 | #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ | |
278 | encode_putfh_maxsz + \ | |
279 | encode_getattr_maxsz) | |
280 | #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ | |
281 | decode_putfh_maxsz + \ | |
282 | decode_getattr_maxsz) | |
283 | #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ | |
284 | encode_putfh_maxsz + \ | |
285 | encode_lookup_maxsz + \ | |
286 | encode_getattr_maxsz + \ | |
287 | encode_getfh_maxsz) | |
288 | #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ | |
289 | decode_putfh_maxsz + \ | |
290 | op_decode_hdr_maxsz + \ | |
291 | decode_getattr_maxsz + \ | |
292 | decode_getfh_maxsz) | |
293 | #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ | |
294 | encode_putrootfh_maxsz + \ | |
295 | encode_getattr_maxsz + \ | |
296 | encode_getfh_maxsz) | |
297 | #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ | |
298 | decode_putrootfh_maxsz + \ | |
299 | decode_getattr_maxsz + \ | |
300 | decode_getfh_maxsz) | |
301 | #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ | |
302 | encode_putfh_maxsz + \ | |
303 | encode_remove_maxsz) | |
304 | #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ | |
305 | decode_putfh_maxsz + \ | |
306 | op_decode_hdr_maxsz + 5) | |
307 | #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ | |
308 | encode_putfh_maxsz + \ | |
309 | encode_savefh_maxsz + \ | |
310 | encode_putfh_maxsz + \ | |
311 | encode_rename_maxsz) | |
312 | #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ | |
313 | decode_putfh_maxsz + \ | |
314 | decode_savefh_maxsz + \ | |
315 | decode_putfh_maxsz + \ | |
316 | decode_rename_maxsz) | |
317 | #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ | |
318 | encode_putfh_maxsz + \ | |
319 | encode_savefh_maxsz + \ | |
320 | encode_putfh_maxsz + \ | |
321 | encode_link_maxsz) | |
322 | #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ | |
323 | decode_putfh_maxsz + \ | |
324 | decode_savefh_maxsz + \ | |
325 | decode_putfh_maxsz + \ | |
326 | decode_link_maxsz) | |
327 | #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ | |
328 | encode_putfh_maxsz + \ | |
329 | encode_symlink_maxsz + \ | |
330 | encode_getattr_maxsz + \ | |
331 | encode_getfh_maxsz) | |
332 | #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ | |
333 | decode_putfh_maxsz + \ | |
334 | decode_symlink_maxsz + \ | |
335 | decode_getattr_maxsz + \ | |
336 | decode_getfh_maxsz) | |
337 | #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ | |
338 | encode_putfh_maxsz + \ | |
339 | encode_create_maxsz + \ | |
340 | encode_getattr_maxsz + \ | |
341 | encode_getfh_maxsz) | |
342 | #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ | |
343 | decode_putfh_maxsz + \ | |
344 | decode_create_maxsz + \ | |
345 | decode_getattr_maxsz + \ | |
346 | decode_getfh_maxsz) | |
347 | #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ | |
348 | encode_putfh_maxsz + \ | |
349 | encode_getattr_maxsz) | |
350 | #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ | |
351 | decode_putfh_maxsz + \ | |
352 | decode_getattr_maxsz) | |
353 | #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ | |
354 | encode_putfh_maxsz + \ | |
355 | encode_getattr_maxsz) | |
356 | #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ | |
357 | decode_putfh_maxsz + \ | |
358 | op_decode_hdr_maxsz + 12) | |
359 | #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ | |
360 | encode_getattr_maxsz) | |
361 | #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ | |
362 | decode_getattr_maxsz) | |
363 | #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ | |
364 | encode_putfh_maxsz + \ | |
365 | encode_delegreturn_maxsz) | |
366 | #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ | |
367 | decode_delegreturn_maxsz) | |
368 | ||
369 | static struct { | |
370 | unsigned int mode; | |
371 | unsigned int nfs2type; | |
372 | } nfs_type2fmt[] = { | |
373 | { 0, NFNON }, | |
374 | { S_IFREG, NFREG }, | |
375 | { S_IFDIR, NFDIR }, | |
376 | { S_IFBLK, NFBLK }, | |
377 | { S_IFCHR, NFCHR }, | |
378 | { S_IFLNK, NFLNK }, | |
379 | { S_IFSOCK, NFSOCK }, | |
380 | { S_IFIFO, NFFIFO }, | |
381 | { 0, NFNON }, | |
382 | { 0, NFNON }, | |
383 | }; | |
384 | ||
385 | struct compound_hdr { | |
386 | int32_t status; | |
387 | uint32_t nops; | |
388 | uint32_t taglen; | |
389 | char * tag; | |
390 | }; | |
391 | ||
392 | /* | |
393 | * START OF "GENERIC" ENCODE ROUTINES. | |
394 | * These may look a little ugly since they are imported from a "generic" | |
395 | * set of XDR encode/decode routines which are intended to be shared by | |
396 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
397 | * | |
398 | * If the pain of reading these is too great, it should be a straightforward | |
399 | * task to translate them into Linux-specific versions which are more | |
400 | * consistent with the style used in NFSv2/v3... | |
401 | */ | |
402 | #define WRITE32(n) *p++ = htonl(n) | |
403 | #define WRITE64(n) do { \ | |
404 | *p++ = htonl((uint32_t)((n) >> 32)); \ | |
405 | *p++ = htonl((uint32_t)(n)); \ | |
406 | } while (0) | |
407 | #define WRITEMEM(ptr,nbytes) do { \ | |
408 | p = xdr_encode_opaque_fixed(p, ptr, nbytes); \ | |
409 | } while (0) | |
410 | ||
411 | #define RESERVE_SPACE(nbytes) do { \ | |
412 | p = xdr_reserve_space(xdr, nbytes); \ | |
413 | if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \ | |
414 | BUG_ON(!p); \ | |
415 | } while (0) | |
416 | ||
417 | static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) | |
418 | { | |
419 | uint32_t *p; | |
420 | ||
421 | p = xdr_reserve_space(xdr, 4 + len); | |
422 | BUG_ON(p == NULL); | |
423 | xdr_encode_opaque(p, str, len); | |
424 | } | |
425 | ||
426 | static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
427 | { | |
428 | uint32_t *p; | |
429 | ||
430 | dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); | |
431 | BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); | |
432 | RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2)); | |
433 | WRITE32(hdr->taglen); | |
434 | WRITEMEM(hdr->tag, hdr->taglen); | |
435 | WRITE32(NFS4_MINOR_VERSION); | |
436 | WRITE32(hdr->nops); | |
437 | return 0; | |
438 | } | |
439 | ||
440 | static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) | |
441 | { | |
442 | uint32_t *p; | |
443 | ||
444 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); | |
445 | BUG_ON(p == NULL); | |
446 | xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); | |
447 | } | |
448 | ||
449 | static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) | |
450 | { | |
451 | char owner_name[IDMAP_NAMESZ]; | |
452 | char owner_group[IDMAP_NAMESZ]; | |
453 | int owner_namelen = 0; | |
454 | int owner_grouplen = 0; | |
455 | uint32_t *p; | |
456 | uint32_t *q; | |
457 | int len; | |
458 | uint32_t bmval0 = 0; | |
459 | uint32_t bmval1 = 0; | |
460 | int status; | |
461 | ||
462 | /* | |
463 | * We reserve enough space to write the entire attribute buffer at once. | |
464 | * In the worst-case, this would be | |
465 | * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) | |
466 | * = 36 bytes, plus any contribution from variable-length fields | |
467 | * such as owner/group/acl's. | |
468 | */ | |
469 | len = 16; | |
470 | ||
471 | /* Sigh */ | |
472 | if (iap->ia_valid & ATTR_SIZE) | |
473 | len += 8; | |
474 | if (iap->ia_valid & ATTR_MODE) | |
475 | len += 4; | |
476 | if (iap->ia_valid & ATTR_UID) { | |
477 | owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name); | |
478 | if (owner_namelen < 0) { | |
479 | printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n", | |
480 | iap->ia_uid); | |
481 | /* XXX */ | |
482 | strcpy(owner_name, "nobody"); | |
483 | owner_namelen = sizeof("nobody") - 1; | |
484 | /* goto out; */ | |
485 | } | |
486 | len += 4 + (XDR_QUADLEN(owner_namelen) << 2); | |
487 | } | |
488 | if (iap->ia_valid & ATTR_GID) { | |
489 | owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group); | |
490 | if (owner_grouplen < 0) { | |
491 | printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n", | |
492 | iap->ia_gid); | |
493 | strcpy(owner_group, "nobody"); | |
494 | owner_grouplen = sizeof("nobody") - 1; | |
495 | /* goto out; */ | |
496 | } | |
497 | len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); | |
498 | } | |
499 | if (iap->ia_valid & ATTR_ATIME_SET) | |
500 | len += 16; | |
501 | else if (iap->ia_valid & ATTR_ATIME) | |
502 | len += 4; | |
503 | if (iap->ia_valid & ATTR_MTIME_SET) | |
504 | len += 16; | |
505 | else if (iap->ia_valid & ATTR_MTIME) | |
506 | len += 4; | |
507 | RESERVE_SPACE(len); | |
508 | ||
509 | /* | |
510 | * We write the bitmap length now, but leave the bitmap and the attribute | |
511 | * buffer length to be backfilled at the end of this routine. | |
512 | */ | |
513 | WRITE32(2); | |
514 | q = p; | |
515 | p += 3; | |
516 | ||
517 | if (iap->ia_valid & ATTR_SIZE) { | |
518 | bmval0 |= FATTR4_WORD0_SIZE; | |
519 | WRITE64(iap->ia_size); | |
520 | } | |
521 | if (iap->ia_valid & ATTR_MODE) { | |
522 | bmval1 |= FATTR4_WORD1_MODE; | |
523 | WRITE32(iap->ia_mode); | |
524 | } | |
525 | if (iap->ia_valid & ATTR_UID) { | |
526 | bmval1 |= FATTR4_WORD1_OWNER; | |
527 | WRITE32(owner_namelen); | |
528 | WRITEMEM(owner_name, owner_namelen); | |
529 | } | |
530 | if (iap->ia_valid & ATTR_GID) { | |
531 | bmval1 |= FATTR4_WORD1_OWNER_GROUP; | |
532 | WRITE32(owner_grouplen); | |
533 | WRITEMEM(owner_group, owner_grouplen); | |
534 | } | |
535 | if (iap->ia_valid & ATTR_ATIME_SET) { | |
536 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
537 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
538 | WRITE32(0); | |
539 | WRITE32(iap->ia_mtime.tv_sec); | |
540 | WRITE32(iap->ia_mtime.tv_nsec); | |
541 | } | |
542 | else if (iap->ia_valid & ATTR_ATIME) { | |
543 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
544 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
545 | } | |
546 | if (iap->ia_valid & ATTR_MTIME_SET) { | |
547 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
548 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
549 | WRITE32(0); | |
550 | WRITE32(iap->ia_mtime.tv_sec); | |
551 | WRITE32(iap->ia_mtime.tv_nsec); | |
552 | } | |
553 | else if (iap->ia_valid & ATTR_MTIME) { | |
554 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
555 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
556 | } | |
557 | ||
558 | /* | |
559 | * Now we backfill the bitmap and the attribute buffer length. | |
560 | */ | |
561 | if (len != ((char *)p - (char *)q) + 4) { | |
562 | printk ("encode_attr: Attr length calculation error! %u != %Zu\n", | |
563 | len, ((char *)p - (char *)q) + 4); | |
564 | BUG(); | |
565 | } | |
566 | len = (char *)p - (char *)q - 12; | |
567 | *q++ = htonl(bmval0); | |
568 | *q++ = htonl(bmval1); | |
569 | *q++ = htonl(len); | |
570 | ||
571 | status = 0; | |
572 | /* out: */ | |
573 | return status; | |
574 | } | |
575 | ||
576 | static int encode_access(struct xdr_stream *xdr, u32 access) | |
577 | { | |
578 | uint32_t *p; | |
579 | ||
580 | RESERVE_SPACE(8); | |
581 | WRITE32(OP_ACCESS); | |
582 | WRITE32(access); | |
583 | ||
584 | return 0; | |
585 | } | |
586 | ||
587 | static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
588 | { | |
589 | uint32_t *p; | |
590 | ||
591 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
592 | WRITE32(OP_CLOSE); | |
593 | WRITE32(arg->seqid); | |
594 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
600 | { | |
601 | uint32_t *p; | |
602 | ||
603 | RESERVE_SPACE(16); | |
604 | WRITE32(OP_COMMIT); | |
605 | WRITE64(args->offset); | |
606 | WRITE32(args->count); | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
611 | static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create) | |
612 | { | |
613 | uint32_t *p; | |
614 | ||
615 | RESERVE_SPACE(8); | |
616 | WRITE32(OP_CREATE); | |
617 | WRITE32(create->ftype); | |
618 | ||
619 | switch (create->ftype) { | |
620 | case NF4LNK: | |
621 | RESERVE_SPACE(4 + create->u.symlink->len); | |
622 | WRITE32(create->u.symlink->len); | |
623 | WRITEMEM(create->u.symlink->name, create->u.symlink->len); | |
624 | break; | |
625 | ||
626 | case NF4BLK: case NF4CHR: | |
627 | RESERVE_SPACE(8); | |
628 | WRITE32(create->u.device.specdata1); | |
629 | WRITE32(create->u.device.specdata2); | |
630 | break; | |
631 | ||
632 | default: | |
633 | break; | |
634 | } | |
635 | ||
636 | RESERVE_SPACE(4 + create->name->len); | |
637 | WRITE32(create->name->len); | |
638 | WRITEMEM(create->name->name, create->name->len); | |
639 | ||
640 | return encode_attrs(xdr, create->attrs, create->server); | |
641 | } | |
642 | ||
643 | static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap) | |
644 | { | |
645 | uint32_t *p; | |
646 | ||
647 | RESERVE_SPACE(12); | |
648 | WRITE32(OP_GETATTR); | |
649 | WRITE32(1); | |
650 | WRITE32(bitmap); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1) | |
655 | { | |
656 | uint32_t *p; | |
657 | ||
658 | RESERVE_SPACE(16); | |
659 | WRITE32(OP_GETATTR); | |
660 | WRITE32(2); | |
661 | WRITE32(bm0); | |
662 | WRITE32(bm1); | |
663 | return 0; | |
664 | } | |
665 | ||
666 | static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask) | |
667 | { | |
1da177e4 LT |
668 | return encode_getattr_two(xdr, |
669 | bitmask[0] & nfs4_fattr_bitmap[0], | |
670 | bitmask[1] & nfs4_fattr_bitmap[1]); | |
671 | } | |
672 | ||
673 | static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask) | |
674 | { | |
1da177e4 LT |
675 | return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0], |
676 | bitmask[1] & nfs4_fsinfo_bitmap[1]); | |
677 | } | |
678 | ||
679 | static int encode_getfh(struct xdr_stream *xdr) | |
680 | { | |
681 | uint32_t *p; | |
682 | ||
683 | RESERVE_SPACE(4); | |
684 | WRITE32(OP_GETFH); | |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
689 | static int encode_link(struct xdr_stream *xdr, const struct qstr *name) | |
690 | { | |
691 | uint32_t *p; | |
692 | ||
693 | RESERVE_SPACE(8 + name->len); | |
694 | WRITE32(OP_LINK); | |
695 | WRITE32(name->len); | |
696 | WRITEMEM(name->name, name->len); | |
697 | ||
698 | return 0; | |
699 | } | |
700 | ||
701 | /* | |
702 | * opcode,type,reclaim,offset,length,new_lock_owner = 32 | |
703 | * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 | |
704 | */ | |
705 | static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
706 | { | |
707 | uint32_t *p; | |
708 | struct nfs_lock_opargs *opargs = arg->u.lock; | |
709 | ||
710 | RESERVE_SPACE(32); | |
711 | WRITE32(OP_LOCK); | |
712 | WRITE32(arg->type); | |
713 | WRITE32(opargs->reclaim); | |
714 | WRITE64(arg->offset); | |
715 | WRITE64(arg->length); | |
716 | WRITE32(opargs->new_lock_owner); | |
717 | if (opargs->new_lock_owner){ | |
718 | struct nfs_open_to_lock *ol = opargs->u.open_lock; | |
719 | ||
720 | RESERVE_SPACE(40); | |
721 | WRITE32(ol->open_seqid); | |
722 | WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid)); | |
723 | WRITE32(ol->lock_seqid); | |
724 | WRITE64(ol->lock_owner.clientid); | |
725 | WRITE32(4); | |
726 | WRITE32(ol->lock_owner.id); | |
727 | } | |
728 | else { | |
729 | struct nfs_exist_lock *el = opargs->u.exist_lock; | |
730 | ||
731 | RESERVE_SPACE(20); | |
732 | WRITEMEM(&el->stateid, sizeof(el->stateid)); | |
733 | WRITE32(el->seqid); | |
734 | } | |
735 | ||
736 | return 0; | |
737 | } | |
738 | ||
739 | static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
740 | { | |
741 | uint32_t *p; | |
742 | struct nfs_lowner *opargs = arg->u.lockt; | |
743 | ||
744 | RESERVE_SPACE(40); | |
745 | WRITE32(OP_LOCKT); | |
746 | WRITE32(arg->type); | |
747 | WRITE64(arg->offset); | |
748 | WRITE64(arg->length); | |
749 | WRITE64(opargs->clientid); | |
750 | WRITE32(4); | |
751 | WRITE32(opargs->id); | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
757 | { | |
758 | uint32_t *p; | |
759 | struct nfs_locku_opargs *opargs = arg->u.locku; | |
760 | ||
761 | RESERVE_SPACE(44); | |
762 | WRITE32(OP_LOCKU); | |
763 | WRITE32(arg->type); | |
764 | WRITE32(opargs->seqid); | |
765 | WRITEMEM(&opargs->stateid, sizeof(opargs->stateid)); | |
766 | WRITE64(arg->offset); | |
767 | WRITE64(arg->length); | |
768 | ||
769 | return 0; | |
770 | } | |
771 | ||
772 | static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name) | |
773 | { | |
774 | int len = name->len; | |
775 | uint32_t *p; | |
776 | ||
777 | RESERVE_SPACE(8 + len); | |
778 | WRITE32(OP_LOOKUP); | |
779 | WRITE32(len); | |
780 | WRITEMEM(name->name, len); | |
781 | ||
782 | return 0; | |
783 | } | |
784 | ||
785 | static void encode_share_access(struct xdr_stream *xdr, int open_flags) | |
786 | { | |
787 | uint32_t *p; | |
788 | ||
789 | RESERVE_SPACE(8); | |
790 | switch (open_flags & (FMODE_READ|FMODE_WRITE)) { | |
791 | case FMODE_READ: | |
792 | WRITE32(NFS4_SHARE_ACCESS_READ); | |
793 | break; | |
794 | case FMODE_WRITE: | |
795 | WRITE32(NFS4_SHARE_ACCESS_WRITE); | |
796 | break; | |
797 | case FMODE_READ|FMODE_WRITE: | |
798 | WRITE32(NFS4_SHARE_ACCESS_BOTH); | |
799 | break; | |
800 | default: | |
801 | BUG(); | |
802 | } | |
803 | WRITE32(0); /* for linux, share_deny = 0 always */ | |
804 | } | |
805 | ||
806 | static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
807 | { | |
808 | uint32_t *p; | |
809 | /* | |
810 | * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, | |
811 | * owner 4 = 32 | |
812 | */ | |
813 | RESERVE_SPACE(8); | |
814 | WRITE32(OP_OPEN); | |
815 | WRITE32(arg->seqid); | |
816 | encode_share_access(xdr, arg->open_flags); | |
817 | RESERVE_SPACE(16); | |
818 | WRITE64(arg->clientid); | |
819 | WRITE32(4); | |
820 | WRITE32(arg->id); | |
821 | } | |
822 | ||
823 | static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
824 | { | |
825 | uint32_t *p; | |
826 | ||
827 | RESERVE_SPACE(4); | |
828 | switch(arg->open_flags & O_EXCL) { | |
829 | case 0: | |
830 | WRITE32(NFS4_CREATE_UNCHECKED); | |
831 | encode_attrs(xdr, arg->u.attrs, arg->server); | |
832 | break; | |
833 | default: | |
834 | WRITE32(NFS4_CREATE_EXCLUSIVE); | |
835 | encode_nfs4_verifier(xdr, &arg->u.verifier); | |
836 | } | |
837 | } | |
838 | ||
839 | static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
840 | { | |
841 | uint32_t *p; | |
842 | ||
843 | RESERVE_SPACE(4); | |
844 | switch (arg->open_flags & O_CREAT) { | |
845 | case 0: | |
846 | WRITE32(NFS4_OPEN_NOCREATE); | |
847 | break; | |
848 | default: | |
849 | BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); | |
850 | WRITE32(NFS4_OPEN_CREATE); | |
851 | encode_createmode(xdr, arg); | |
852 | } | |
853 | } | |
854 | ||
855 | static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type) | |
856 | { | |
857 | uint32_t *p; | |
858 | ||
859 | RESERVE_SPACE(4); | |
860 | switch (delegation_type) { | |
861 | case 0: | |
862 | WRITE32(NFS4_OPEN_DELEGATE_NONE); | |
863 | break; | |
864 | case FMODE_READ: | |
865 | WRITE32(NFS4_OPEN_DELEGATE_READ); | |
866 | break; | |
867 | case FMODE_WRITE|FMODE_READ: | |
868 | WRITE32(NFS4_OPEN_DELEGATE_WRITE); | |
869 | break; | |
870 | default: | |
871 | BUG(); | |
872 | } | |
873 | } | |
874 | ||
875 | static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) | |
876 | { | |
877 | uint32_t *p; | |
878 | ||
879 | RESERVE_SPACE(4); | |
880 | WRITE32(NFS4_OPEN_CLAIM_NULL); | |
881 | encode_string(xdr, name->len, name->name); | |
882 | } | |
883 | ||
884 | static inline void encode_claim_previous(struct xdr_stream *xdr, int type) | |
885 | { | |
886 | uint32_t *p; | |
887 | ||
888 | RESERVE_SPACE(4); | |
889 | WRITE32(NFS4_OPEN_CLAIM_PREVIOUS); | |
890 | encode_delegation_type(xdr, type); | |
891 | } | |
892 | ||
893 | static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) | |
894 | { | |
895 | uint32_t *p; | |
896 | ||
897 | RESERVE_SPACE(4+sizeof(stateid->data)); | |
898 | WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR); | |
899 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
900 | encode_string(xdr, name->len, name->name); | |
901 | } | |
902 | ||
903 | static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
904 | { | |
905 | encode_openhdr(xdr, arg); | |
906 | encode_opentype(xdr, arg); | |
907 | switch (arg->claim) { | |
908 | case NFS4_OPEN_CLAIM_NULL: | |
909 | encode_claim_null(xdr, arg->name); | |
910 | break; | |
911 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
912 | encode_claim_previous(xdr, arg->u.delegation_type); | |
913 | break; | |
914 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
915 | encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); | |
916 | break; | |
917 | default: | |
918 | BUG(); | |
919 | } | |
920 | return 0; | |
921 | } | |
922 | ||
923 | static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg) | |
924 | { | |
925 | uint32_t *p; | |
926 | ||
927 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
928 | WRITE32(OP_OPEN_CONFIRM); | |
929 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
930 | WRITE32(arg->seqid); | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
935 | static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
936 | { | |
937 | uint32_t *p; | |
938 | ||
939 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
940 | WRITE32(OP_OPEN_DOWNGRADE); | |
941 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
942 | WRITE32(arg->seqid); | |
943 | encode_share_access(xdr, arg->open_flags); | |
944 | return 0; | |
945 | } | |
946 | ||
947 | static int | |
948 | encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh) | |
949 | { | |
950 | int len = fh->size; | |
951 | uint32_t *p; | |
952 | ||
953 | RESERVE_SPACE(8 + len); | |
954 | WRITE32(OP_PUTFH); | |
955 | WRITE32(len); | |
956 | WRITEMEM(fh->data, len); | |
957 | ||
958 | return 0; | |
959 | } | |
960 | ||
961 | static int encode_putrootfh(struct xdr_stream *xdr) | |
962 | { | |
963 | uint32_t *p; | |
964 | ||
965 | RESERVE_SPACE(4); | |
966 | WRITE32(OP_PUTROOTFH); | |
967 | ||
968 | return 0; | |
969 | } | |
970 | ||
971 | static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx) | |
972 | { | |
1da177e4 LT |
973 | nfs4_stateid stateid; |
974 | uint32_t *p; | |
975 | ||
976 | RESERVE_SPACE(16); | |
977 | if (ctx->state != NULL) { | |
978 | nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner); | |
979 | WRITEMEM(stateid.data, sizeof(stateid.data)); | |
980 | } else | |
981 | WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data)); | |
982 | } | |
983 | ||
984 | static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args) | |
985 | { | |
986 | uint32_t *p; | |
987 | ||
988 | RESERVE_SPACE(4); | |
989 | WRITE32(OP_READ); | |
990 | ||
991 | encode_stateid(xdr, args->context); | |
992 | ||
993 | RESERVE_SPACE(12); | |
994 | WRITE64(args->offset); | |
995 | WRITE32(args->count); | |
996 | ||
997 | return 0; | |
998 | } | |
999 | ||
1000 | static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req) | |
1001 | { | |
1002 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1003 | int replen; | |
1004 | uint32_t *p; | |
1005 | ||
1006 | RESERVE_SPACE(32+sizeof(nfs4_verifier)); | |
1007 | WRITE32(OP_READDIR); | |
1008 | WRITE64(readdir->cookie); | |
1009 | WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data)); | |
1010 | WRITE32(readdir->count >> 1); /* We're not doing readdirplus */ | |
1011 | WRITE32(readdir->count); | |
1012 | WRITE32(2); | |
1013 | if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1014 | WRITE32(0); | |
1015 | WRITE32(FATTR4_WORD1_MOUNTED_ON_FILEID); | |
1016 | } else { | |
1017 | WRITE32(FATTR4_WORD0_FILEID); | |
1018 | WRITE32(0); | |
1019 | } | |
1020 | ||
1021 | /* set up reply kvec | |
1022 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1023 | * + OP_READDIR + status + verifer(2) = 9 | |
1024 | */ | |
1025 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2; | |
1026 | xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages, | |
1027 | readdir->pgbase, readdir->count); | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req) | |
1033 | { | |
1034 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1035 | unsigned int replen; | |
1036 | uint32_t *p; | |
1037 | ||
1038 | RESERVE_SPACE(4); | |
1039 | WRITE32(OP_READLINK); | |
1040 | ||
1041 | /* set up reply kvec | |
1042 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1043 | * + OP_READLINK + status + string length = 8 | |
1044 | */ | |
1045 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2; | |
1046 | xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages, | |
1047 | readlink->pgbase, readlink->pglen); | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | static int encode_remove(struct xdr_stream *xdr, const struct qstr *name) | |
1053 | { | |
1054 | uint32_t *p; | |
1055 | ||
1056 | RESERVE_SPACE(8 + name->len); | |
1057 | WRITE32(OP_REMOVE); | |
1058 | WRITE32(name->len); | |
1059 | WRITEMEM(name->name, name->len); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname) | |
1065 | { | |
1066 | uint32_t *p; | |
1067 | ||
1068 | RESERVE_SPACE(8 + oldname->len); | |
1069 | WRITE32(OP_RENAME); | |
1070 | WRITE32(oldname->len); | |
1071 | WRITEMEM(oldname->name, oldname->len); | |
1072 | ||
1073 | RESERVE_SPACE(4 + newname->len); | |
1074 | WRITE32(newname->len); | |
1075 | WRITEMEM(newname->name, newname->len); | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid) | |
1081 | { | |
1082 | uint32_t *p; | |
1083 | ||
1084 | RESERVE_SPACE(12); | |
1085 | WRITE32(OP_RENEW); | |
1086 | WRITE64(client_stateid->cl_clientid); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static int | |
1092 | encode_savefh(struct xdr_stream *xdr) | |
1093 | { | |
1094 | uint32_t *p; | |
1095 | ||
1096 | RESERVE_SPACE(4); | |
1097 | WRITE32(OP_SAVEFH); | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server) | |
1103 | { | |
1104 | int status; | |
1105 | uint32_t *p; | |
1106 | ||
1107 | RESERVE_SPACE(4+sizeof(arg->stateid.data)); | |
1108 | WRITE32(OP_SETATTR); | |
1109 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
1110 | ||
1111 | if ((status = encode_attrs(xdr, arg->iap, server))) | |
1112 | return status; | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid) | |
1118 | { | |
1119 | uint32_t *p; | |
1120 | ||
1121 | RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data)); | |
1122 | WRITE32(OP_SETCLIENTID); | |
1123 | WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data)); | |
1124 | ||
1125 | encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); | |
1126 | RESERVE_SPACE(4); | |
1127 | WRITE32(setclientid->sc_prog); | |
1128 | encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); | |
1129 | encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); | |
1130 | RESERVE_SPACE(4); | |
1131 | WRITE32(setclientid->sc_cb_ident); | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state) | |
1137 | { | |
1138 | uint32_t *p; | |
1139 | ||
1140 | RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data)); | |
1141 | WRITE32(OP_SETCLIENTID_CONFIRM); | |
1142 | WRITE64(client_state->cl_clientid); | |
1143 | WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data)); | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
1149 | { | |
1150 | uint32_t *p; | |
1151 | ||
1152 | RESERVE_SPACE(4); | |
1153 | WRITE32(OP_WRITE); | |
1154 | ||
1155 | encode_stateid(xdr, args->context); | |
1156 | ||
1157 | RESERVE_SPACE(16); | |
1158 | WRITE64(args->offset); | |
1159 | WRITE32(args->stable); | |
1160 | WRITE32(args->count); | |
1161 | ||
1162 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid) | |
1168 | { | |
1169 | uint32_t *p; | |
1170 | ||
1171 | RESERVE_SPACE(20); | |
1172 | ||
1173 | WRITE32(OP_DELEGRETURN); | |
1174 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
1175 | return 0; | |
1176 | ||
1177 | } | |
1178 | /* | |
1179 | * END OF "GENERIC" ENCODE ROUTINES. | |
1180 | */ | |
1181 | ||
1182 | /* | |
1183 | * Encode an ACCESS request | |
1184 | */ | |
1185 | static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args) | |
1186 | { | |
1187 | struct xdr_stream xdr; | |
1188 | struct compound_hdr hdr = { | |
1189 | .nops = 2, | |
1190 | }; | |
1191 | int status; | |
1192 | ||
1193 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1194 | encode_compound_hdr(&xdr, &hdr); | |
1195 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1196 | status = encode_access(&xdr, args->access); | |
1197 | return status; | |
1198 | } | |
1199 | ||
1200 | /* | |
1201 | * Encode LOOKUP request | |
1202 | */ | |
1203 | static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args) | |
1204 | { | |
1205 | struct xdr_stream xdr; | |
1206 | struct compound_hdr hdr = { | |
1207 | .nops = 4, | |
1208 | }; | |
1209 | int status; | |
1210 | ||
1211 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1212 | encode_compound_hdr(&xdr, &hdr); | |
1213 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1214 | goto out; | |
1215 | if ((status = encode_lookup(&xdr, args->name)) != 0) | |
1216 | goto out; | |
1217 | if ((status = encode_getfh(&xdr)) != 0) | |
1218 | goto out; | |
1219 | status = encode_getfattr(&xdr, args->bitmask); | |
1220 | out: | |
1221 | return status; | |
1222 | } | |
1223 | ||
1224 | /* | |
1225 | * Encode LOOKUP_ROOT request | |
1226 | */ | |
1227 | static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args) | |
1228 | { | |
1229 | struct xdr_stream xdr; | |
1230 | struct compound_hdr hdr = { | |
1231 | .nops = 3, | |
1232 | }; | |
1233 | int status; | |
1234 | ||
1235 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1236 | encode_compound_hdr(&xdr, &hdr); | |
1237 | if ((status = encode_putrootfh(&xdr)) != 0) | |
1238 | goto out; | |
1239 | if ((status = encode_getfh(&xdr)) == 0) | |
1240 | status = encode_getfattr(&xdr, args->bitmask); | |
1241 | out: | |
1242 | return status; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * Encode REMOVE request | |
1247 | */ | |
1248 | static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args) | |
1249 | { | |
1250 | struct xdr_stream xdr; | |
1251 | struct compound_hdr hdr = { | |
1252 | .nops = 2, | |
1253 | }; | |
1254 | int status; | |
1255 | ||
1256 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1257 | encode_compound_hdr(&xdr, &hdr); | |
1258 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1259 | status = encode_remove(&xdr, args->name); | |
1260 | return status; | |
1261 | } | |
1262 | ||
1263 | /* | |
1264 | * Encode RENAME request | |
1265 | */ | |
1266 | static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args) | |
1267 | { | |
1268 | struct xdr_stream xdr; | |
1269 | struct compound_hdr hdr = { | |
1270 | .nops = 4, | |
1271 | }; | |
1272 | int status; | |
1273 | ||
1274 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1275 | encode_compound_hdr(&xdr, &hdr); | |
1276 | if ((status = encode_putfh(&xdr, args->old_dir)) != 0) | |
1277 | goto out; | |
1278 | if ((status = encode_savefh(&xdr)) != 0) | |
1279 | goto out; | |
1280 | if ((status = encode_putfh(&xdr, args->new_dir)) != 0) | |
1281 | goto out; | |
1282 | status = encode_rename(&xdr, args->old_name, args->new_name); | |
1283 | out: | |
1284 | return status; | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * Encode LINK request | |
1289 | */ | |
1290 | static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args) | |
1291 | { | |
1292 | struct xdr_stream xdr; | |
1293 | struct compound_hdr hdr = { | |
1294 | .nops = 4, | |
1295 | }; | |
1296 | int status; | |
1297 | ||
1298 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1299 | encode_compound_hdr(&xdr, &hdr); | |
1300 | if ((status = encode_putfh(&xdr, args->fh)) != 0) | |
1301 | goto out; | |
1302 | if ((status = encode_savefh(&xdr)) != 0) | |
1303 | goto out; | |
1304 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1305 | goto out; | |
1306 | status = encode_link(&xdr, args->name); | |
1307 | out: | |
1308 | return status; | |
1309 | } | |
1310 | ||
1311 | /* | |
1312 | * Encode CREATE request | |
1313 | */ | |
1314 | static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1315 | { | |
1316 | struct xdr_stream xdr; | |
1317 | struct compound_hdr hdr = { | |
1318 | .nops = 4, | |
1319 | }; | |
1320 | int status; | |
1321 | ||
1322 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1323 | encode_compound_hdr(&xdr, &hdr); | |
1324 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1325 | goto out; | |
1326 | if ((status = encode_create(&xdr, args)) != 0) | |
1327 | goto out; | |
1328 | if ((status = encode_getfh(&xdr)) != 0) | |
1329 | goto out; | |
1330 | status = encode_getfattr(&xdr, args->bitmask); | |
1331 | out: | |
1332 | return status; | |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Encode SYMLINK request | |
1337 | */ | |
1338 | static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1339 | { | |
1340 | return nfs4_xdr_enc_create(req, p, args); | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * Encode GETATTR request | |
1345 | */ | |
1346 | static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args) | |
1347 | { | |
1348 | struct xdr_stream xdr; | |
1349 | struct compound_hdr hdr = { | |
1350 | .nops = 2, | |
1351 | }; | |
1352 | int status; | |
1353 | ||
1354 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1355 | encode_compound_hdr(&xdr, &hdr); | |
1356 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1357 | status = encode_getfattr(&xdr, args->bitmask); | |
1358 | return status; | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * Encode a CLOSE request | |
1363 | */ | |
1364 | static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1365 | { | |
1366 | struct xdr_stream xdr; | |
1367 | struct compound_hdr hdr = { | |
1368 | .nops = 2, | |
1369 | }; | |
1370 | int status; | |
1371 | ||
1372 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1373 | encode_compound_hdr(&xdr, &hdr); | |
1374 | status = encode_putfh(&xdr, args->fh); | |
1375 | if(status) | |
1376 | goto out; | |
1377 | status = encode_close(&xdr, args); | |
1378 | out: | |
1379 | return status; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * Encode an OPEN request | |
1384 | */ | |
1385 | static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1386 | { | |
1387 | struct xdr_stream xdr; | |
1388 | struct compound_hdr hdr = { | |
1389 | .nops = 4, | |
1390 | }; | |
1391 | int status; | |
1392 | ||
1393 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1394 | encode_compound_hdr(&xdr, &hdr); | |
1395 | status = encode_putfh(&xdr, args->fh); | |
1396 | if (status) | |
1397 | goto out; | |
1398 | status = encode_open(&xdr, args); | |
1399 | if (status) | |
1400 | goto out; | |
1401 | status = encode_getfh(&xdr); | |
1402 | if (status) | |
1403 | goto out; | |
1404 | status = encode_getfattr(&xdr, args->bitmask); | |
1405 | out: | |
1406 | return status; | |
1407 | } | |
1408 | ||
1409 | /* | |
1410 | * Encode an OPEN_CONFIRM request | |
1411 | */ | |
1412 | static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args) | |
1413 | { | |
1414 | struct xdr_stream xdr; | |
1415 | struct compound_hdr hdr = { | |
1416 | .nops = 2, | |
1417 | }; | |
1418 | int status; | |
1419 | ||
1420 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1421 | encode_compound_hdr(&xdr, &hdr); | |
1422 | status = encode_putfh(&xdr, args->fh); | |
1423 | if(status) | |
1424 | goto out; | |
1425 | status = encode_open_confirm(&xdr, args); | |
1426 | out: | |
1427 | return status; | |
1428 | } | |
1429 | ||
1430 | /* | |
1431 | * Encode an OPEN request with no attributes. | |
1432 | */ | |
1433 | static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1434 | { | |
1435 | struct xdr_stream xdr; | |
1436 | struct compound_hdr hdr = { | |
1437 | .nops = 2, | |
1438 | }; | |
1439 | int status; | |
1440 | ||
1441 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1442 | encode_compound_hdr(&xdr, &hdr); | |
1443 | status = encode_putfh(&xdr, args->fh); | |
1444 | if (status) | |
1445 | goto out; | |
1446 | status = encode_open(&xdr, args); | |
1447 | out: | |
1448 | return status; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Encode an OPEN_DOWNGRADE request | |
1453 | */ | |
1454 | static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1455 | { | |
1456 | struct xdr_stream xdr; | |
1457 | struct compound_hdr hdr = { | |
1458 | .nops = 2, | |
1459 | }; | |
1460 | int status; | |
1461 | ||
1462 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1463 | encode_compound_hdr(&xdr, &hdr); | |
1464 | status = encode_putfh(&xdr, args->fh); | |
1465 | if (status) | |
1466 | goto out; | |
1467 | status = encode_open_downgrade(&xdr, args); | |
1468 | out: | |
1469 | return status; | |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Encode a LOCK request | |
1474 | */ | |
1475 | static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1476 | { | |
1477 | struct xdr_stream xdr; | |
1478 | struct compound_hdr hdr = { | |
1479 | .nops = 2, | |
1480 | }; | |
1481 | int status; | |
1482 | ||
1483 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1484 | encode_compound_hdr(&xdr, &hdr); | |
1485 | status = encode_putfh(&xdr, args->fh); | |
1486 | if(status) | |
1487 | goto out; | |
1488 | status = encode_lock(&xdr, args); | |
1489 | out: | |
1490 | return status; | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | * Encode a LOCKT request | |
1495 | */ | |
1496 | static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1497 | { | |
1498 | struct xdr_stream xdr; | |
1499 | struct compound_hdr hdr = { | |
1500 | .nops = 2, | |
1501 | }; | |
1502 | int status; | |
1503 | ||
1504 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1505 | encode_compound_hdr(&xdr, &hdr); | |
1506 | status = encode_putfh(&xdr, args->fh); | |
1507 | if(status) | |
1508 | goto out; | |
1509 | status = encode_lockt(&xdr, args); | |
1510 | out: | |
1511 | return status; | |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * Encode a LOCKU request | |
1516 | */ | |
1517 | static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1518 | { | |
1519 | struct xdr_stream xdr; | |
1520 | struct compound_hdr hdr = { | |
1521 | .nops = 2, | |
1522 | }; | |
1523 | int status; | |
1524 | ||
1525 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1526 | encode_compound_hdr(&xdr, &hdr); | |
1527 | status = encode_putfh(&xdr, args->fh); | |
1528 | if(status) | |
1529 | goto out; | |
1530 | status = encode_locku(&xdr, args); | |
1531 | out: | |
1532 | return status; | |
1533 | } | |
1534 | ||
1535 | /* | |
1536 | * Encode a READLINK request | |
1537 | */ | |
1538 | static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args) | |
1539 | { | |
1540 | struct xdr_stream xdr; | |
1541 | struct compound_hdr hdr = { | |
1542 | .nops = 2, | |
1543 | }; | |
1544 | int status; | |
1545 | ||
1546 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1547 | encode_compound_hdr(&xdr, &hdr); | |
1548 | status = encode_putfh(&xdr, args->fh); | |
1549 | if(status) | |
1550 | goto out; | |
1551 | status = encode_readlink(&xdr, args, req); | |
1552 | out: | |
1553 | return status; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * Encode a READDIR request | |
1558 | */ | |
1559 | static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args) | |
1560 | { | |
1561 | struct xdr_stream xdr; | |
1562 | struct compound_hdr hdr = { | |
1563 | .nops = 2, | |
1564 | }; | |
1565 | int status; | |
1566 | ||
1567 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1568 | encode_compound_hdr(&xdr, &hdr); | |
1569 | status = encode_putfh(&xdr, args->fh); | |
1570 | if(status) | |
1571 | goto out; | |
1572 | status = encode_readdir(&xdr, args, req); | |
1573 | out: | |
1574 | return status; | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * Encode a READ request | |
1579 | */ | |
1580 | static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args) | |
1581 | { | |
1582 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1583 | struct xdr_stream xdr; | |
1584 | struct compound_hdr hdr = { | |
1585 | .nops = 2, | |
1586 | }; | |
1587 | int replen, status; | |
1588 | ||
1589 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1590 | encode_compound_hdr(&xdr, &hdr); | |
1591 | status = encode_putfh(&xdr, args->fh); | |
1592 | if (status) | |
1593 | goto out; | |
1594 | status = encode_read(&xdr, args); | |
1595 | if (status) | |
1596 | goto out; | |
1597 | ||
1598 | /* set up reply kvec | |
1599 | * toplevel status + taglen=0 + rescount + OP_PUTFH + status | |
1600 | * + OP_READ + status + eof + datalen = 9 | |
1601 | */ | |
1602 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2; | |
1603 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
1604 | args->pages, args->pgbase, args->count); | |
1605 | out: | |
1606 | return status; | |
1607 | } | |
1608 | ||
1609 | /* | |
1610 | * Encode an SETATTR request | |
1611 | */ | |
1612 | static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args) | |
1613 | ||
1614 | { | |
1615 | struct xdr_stream xdr; | |
1616 | struct compound_hdr hdr = { | |
1617 | .nops = 3, | |
1618 | }; | |
1619 | int status; | |
1620 | ||
1621 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1622 | encode_compound_hdr(&xdr, &hdr); | |
1623 | status = encode_putfh(&xdr, args->fh); | |
1624 | if(status) | |
1625 | goto out; | |
1626 | status = encode_setattr(&xdr, args, args->server); | |
1627 | if(status) | |
1628 | goto out; | |
1629 | status = encode_getfattr(&xdr, args->bitmask); | |
1630 | out: | |
1631 | return status; | |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * Encode a WRITE request | |
1636 | */ | |
1637 | static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1638 | { | |
1639 | struct xdr_stream xdr; | |
1640 | struct compound_hdr hdr = { | |
1641 | .nops = 2, | |
1642 | }; | |
1643 | int status; | |
1644 | ||
1645 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1646 | encode_compound_hdr(&xdr, &hdr); | |
1647 | status = encode_putfh(&xdr, args->fh); | |
1648 | if (status) | |
1649 | goto out; | |
1650 | status = encode_write(&xdr, args); | |
1651 | out: | |
1652 | return status; | |
1653 | } | |
1654 | ||
1655 | /* | |
1656 | * a COMMIT request | |
1657 | */ | |
1658 | static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1659 | { | |
1660 | struct xdr_stream xdr; | |
1661 | struct compound_hdr hdr = { | |
1662 | .nops = 2, | |
1663 | }; | |
1664 | int status; | |
1665 | ||
1666 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1667 | encode_compound_hdr(&xdr, &hdr); | |
1668 | status = encode_putfh(&xdr, args->fh); | |
1669 | if (status) | |
1670 | goto out; | |
1671 | status = encode_commit(&xdr, args); | |
1672 | out: | |
1673 | return status; | |
1674 | } | |
1675 | ||
1676 | /* | |
1677 | * FSINFO request | |
1678 | */ | |
1679 | static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args) | |
1680 | { | |
1681 | struct xdr_stream xdr; | |
1682 | struct compound_hdr hdr = { | |
1683 | .nops = 2, | |
1684 | }; | |
1685 | int status; | |
1686 | ||
1687 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1688 | encode_compound_hdr(&xdr, &hdr); | |
1689 | status = encode_putfh(&xdr, args->fh); | |
1690 | if (!status) | |
1691 | status = encode_fsinfo(&xdr, args->bitmask); | |
1692 | return status; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * a PATHCONF request | |
1697 | */ | |
1698 | static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args) | |
1699 | { | |
1da177e4 LT |
1700 | struct xdr_stream xdr; |
1701 | struct compound_hdr hdr = { | |
1702 | .nops = 2, | |
1703 | }; | |
1704 | int status; | |
1705 | ||
1706 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1707 | encode_compound_hdr(&xdr, &hdr); | |
1708 | status = encode_putfh(&xdr, args->fh); | |
1709 | if (!status) | |
1710 | status = encode_getattr_one(&xdr, | |
1711 | args->bitmask[0] & nfs4_pathconf_bitmap[0]); | |
1712 | return status; | |
1713 | } | |
1714 | ||
1715 | /* | |
1716 | * a STATFS request | |
1717 | */ | |
1718 | static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args) | |
1719 | { | |
1da177e4 LT |
1720 | struct xdr_stream xdr; |
1721 | struct compound_hdr hdr = { | |
1722 | .nops = 2, | |
1723 | }; | |
1724 | int 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 == 0) | |
1730 | status = encode_getattr_two(&xdr, | |
1731 | args->bitmask[0] & nfs4_statfs_bitmap[0], | |
1732 | args->bitmask[1] & nfs4_statfs_bitmap[1]); | |
1733 | return status; | |
1734 | } | |
1735 | ||
1736 | /* | |
1737 | * GETATTR_BITMAP request | |
1738 | */ | |
1739 | static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle) | |
1740 | { | |
1741 | struct xdr_stream xdr; | |
1742 | struct compound_hdr hdr = { | |
1743 | .nops = 2, | |
1744 | }; | |
1745 | int status; | |
1746 | ||
1747 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1748 | encode_compound_hdr(&xdr, &hdr); | |
1749 | status = encode_putfh(&xdr, fhandle); | |
1750 | if (status == 0) | |
1751 | status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| | |
1752 | FATTR4_WORD0_LINK_SUPPORT| | |
1753 | FATTR4_WORD0_SYMLINK_SUPPORT| | |
1754 | FATTR4_WORD0_ACLSUPPORT); | |
1755 | return status; | |
1756 | } | |
1757 | ||
1758 | /* | |
1759 | * a RENEW request | |
1760 | */ | |
1761 | static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1762 | { | |
1763 | struct xdr_stream xdr; | |
1764 | struct compound_hdr hdr = { | |
1765 | .nops = 1, | |
1766 | }; | |
1767 | ||
1768 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1769 | encode_compound_hdr(&xdr, &hdr); | |
1770 | return encode_renew(&xdr, clp); | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * a SETCLIENTID request | |
1775 | */ | |
1776 | static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc) | |
1777 | { | |
1778 | struct xdr_stream xdr; | |
1779 | struct compound_hdr hdr = { | |
1780 | .nops = 1, | |
1781 | }; | |
1782 | ||
1783 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1784 | encode_compound_hdr(&xdr, &hdr); | |
1785 | return encode_setclientid(&xdr, sc); | |
1786 | } | |
1787 | ||
1788 | /* | |
1789 | * a SETCLIENTID_CONFIRM request | |
1790 | */ | |
1791 | static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1792 | { | |
1793 | struct xdr_stream xdr; | |
1794 | struct compound_hdr hdr = { | |
1795 | .nops = 3, | |
1796 | }; | |
1797 | const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; | |
1798 | int status; | |
1799 | ||
1800 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1801 | encode_compound_hdr(&xdr, &hdr); | |
1802 | status = encode_setclientid_confirm(&xdr, clp); | |
1803 | if (!status) | |
1804 | status = encode_putrootfh(&xdr); | |
1805 | if (!status) | |
1806 | status = encode_fsinfo(&xdr, lease_bitmap); | |
1807 | return status; | |
1808 | } | |
1809 | ||
1810 | /* | |
1811 | * DELEGRETURN request | |
1812 | */ | |
1813 | static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args) | |
1814 | { | |
1815 | struct xdr_stream xdr; | |
1816 | struct compound_hdr hdr = { | |
1817 | .nops = 2, | |
1818 | }; | |
1819 | int status; | |
1820 | ||
1821 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1822 | encode_compound_hdr(&xdr, &hdr); | |
1823 | if ((status = encode_putfh(&xdr, args->fhandle)) == 0) | |
1824 | status = encode_delegreturn(&xdr, args->stateid); | |
1825 | return status; | |
1826 | } | |
1827 | ||
1828 | /* | |
1829 | * START OF "GENERIC" DECODE ROUTINES. | |
1830 | * These may look a little ugly since they are imported from a "generic" | |
1831 | * set of XDR encode/decode routines which are intended to be shared by | |
1832 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1833 | * | |
1834 | * If the pain of reading these is too great, it should be a straightforward | |
1835 | * task to translate them into Linux-specific versions which are more | |
1836 | * consistent with the style used in NFSv2/v3... | |
1837 | */ | |
1838 | #define READ32(x) (x) = ntohl(*p++) | |
1839 | #define READ64(x) do { \ | |
1840 | (x) = (u64)ntohl(*p++) << 32; \ | |
1841 | (x) |= ntohl(*p++); \ | |
1842 | } while (0) | |
1843 | #define READTIME(x) do { \ | |
1844 | p++; \ | |
1845 | (x.tv_sec) = ntohl(*p++); \ | |
1846 | (x.tv_nsec) = ntohl(*p++); \ | |
1847 | } while (0) | |
1848 | #define COPYMEM(x,nbytes) do { \ | |
1849 | memcpy((x), p, nbytes); \ | |
1850 | p += XDR_QUADLEN(nbytes); \ | |
1851 | } while (0) | |
1852 | ||
1853 | #define READ_BUF(nbytes) do { \ | |
1854 | p = xdr_inline_decode(xdr, nbytes); \ | |
1855 | if (!p) { \ | |
1856 | printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \ | |
1857 | __FUNCTION__, __LINE__); \ | |
1858 | return -EIO; \ | |
1859 | } \ | |
1860 | } while (0) | |
1861 | ||
1862 | static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string) | |
1863 | { | |
1864 | uint32_t *p; | |
1865 | ||
1866 | READ_BUF(4); | |
1867 | READ32(*len); | |
1868 | READ_BUF(*len); | |
1869 | *string = (char *)p; | |
1870 | return 0; | |
1871 | } | |
1872 | ||
1873 | static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
1874 | { | |
1875 | uint32_t *p; | |
1876 | ||
1877 | READ_BUF(8); | |
1878 | READ32(hdr->status); | |
1879 | READ32(hdr->taglen); | |
1880 | ||
1881 | READ_BUF(hdr->taglen + 4); | |
1882 | hdr->tag = (char *)p; | |
1883 | p += XDR_QUADLEN(hdr->taglen); | |
1884 | READ32(hdr->nops); | |
1885 | return 0; | |
1886 | } | |
1887 | ||
1888 | static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) | |
1889 | { | |
1890 | uint32_t *p; | |
1891 | uint32_t opnum; | |
1892 | int32_t nfserr; | |
1893 | ||
1894 | READ_BUF(8); | |
1895 | READ32(opnum); | |
1896 | if (opnum != expected) { | |
1897 | printk(KERN_NOTICE | |
1898 | "nfs4_decode_op_hdr: Server returned operation" | |
1899 | " %d but we issued a request for %d\n", | |
1900 | opnum, expected); | |
1901 | return -EIO; | |
1902 | } | |
1903 | READ32(nfserr); | |
1904 | if (nfserr != NFS_OK) | |
1905 | return -nfs_stat_to_errno(nfserr); | |
1906 | return 0; | |
1907 | } | |
1908 | ||
1909 | /* Dummy routine */ | |
1910 | static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp) | |
1911 | { | |
1912 | uint32_t *p; | |
1913 | uint32_t strlen; | |
1914 | char *str; | |
1915 | ||
1916 | READ_BUF(12); | |
1917 | return decode_opaque_inline(xdr, &strlen, &str); | |
1918 | } | |
1919 | ||
1920 | static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) | |
1921 | { | |
1922 | uint32_t bmlen, *p; | |
1923 | ||
1924 | READ_BUF(4); | |
1925 | READ32(bmlen); | |
1926 | ||
1927 | bitmap[0] = bitmap[1] = 0; | |
1928 | READ_BUF((bmlen << 2)); | |
1929 | if (bmlen > 0) { | |
1930 | READ32(bitmap[0]); | |
1931 | if (bmlen > 1) | |
1932 | READ32(bitmap[1]); | |
1933 | } | |
1934 | return 0; | |
1935 | } | |
1936 | ||
1937 | static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep) | |
1938 | { | |
1939 | uint32_t *p; | |
1940 | ||
1941 | READ_BUF(4); | |
1942 | READ32(*attrlen); | |
1943 | *savep = xdr->p; | |
1944 | return 0; | |
1945 | } | |
1946 | ||
1947 | static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) | |
1948 | { | |
1949 | if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
1950 | decode_attr_bitmap(xdr, bitmask); | |
1951 | bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; | |
1952 | } else | |
1953 | bitmask[0] = bitmask[1] = 0; | |
1954 | dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]); | |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) | |
1959 | { | |
1960 | uint32_t *p; | |
1961 | ||
1962 | *type = 0; | |
1963 | if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) | |
1964 | return -EIO; | |
1965 | if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { | |
1966 | READ_BUF(4); | |
1967 | READ32(*type); | |
1968 | if (*type < NF4REG || *type > NF4NAMEDATTR) { | |
1969 | dprintk("%s: bad type %d\n", __FUNCTION__, *type); | |
1970 | return -EIO; | |
1971 | } | |
1972 | bitmap[0] &= ~FATTR4_WORD0_TYPE; | |
1973 | } | |
1974 | dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type); | |
1975 | return 0; | |
1976 | } | |
1977 | ||
1978 | static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) | |
1979 | { | |
1980 | uint32_t *p; | |
1981 | ||
1982 | *change = 0; | |
1983 | if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) | |
1984 | return -EIO; | |
1985 | if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { | |
1986 | READ_BUF(8); | |
1987 | READ64(*change); | |
1988 | bitmap[0] &= ~FATTR4_WORD0_CHANGE; | |
1989 | } | |
1990 | dprintk("%s: change attribute=%Lu\n", __FUNCTION__, | |
1991 | (unsigned long long)*change); | |
1992 | return 0; | |
1993 | } | |
1994 | ||
1995 | static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) | |
1996 | { | |
1997 | uint32_t *p; | |
1998 | ||
1999 | *size = 0; | |
2000 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) | |
2001 | return -EIO; | |
2002 | if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { | |
2003 | READ_BUF(8); | |
2004 | READ64(*size); | |
2005 | bitmap[0] &= ~FATTR4_WORD0_SIZE; | |
2006 | } | |
2007 | dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size); | |
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2012 | { | |
2013 | uint32_t *p; | |
2014 | ||
2015 | *res = 0; | |
2016 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) | |
2017 | return -EIO; | |
2018 | if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { | |
2019 | READ_BUF(4); | |
2020 | READ32(*res); | |
2021 | bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; | |
2022 | } | |
2023 | dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2024 | return 0; | |
2025 | } | |
2026 | ||
2027 | static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2028 | { | |
2029 | uint32_t *p; | |
2030 | ||
2031 | *res = 0; | |
2032 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) | |
2033 | return -EIO; | |
2034 | if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { | |
2035 | READ_BUF(4); | |
2036 | READ32(*res); | |
2037 | bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; | |
2038 | } | |
2039 | dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2040 | return 0; | |
2041 | } | |
2042 | ||
2043 | static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid) | |
2044 | { | |
2045 | uint32_t *p; | |
2046 | ||
2047 | fsid->major = 0; | |
2048 | fsid->minor = 0; | |
2049 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) | |
2050 | return -EIO; | |
2051 | if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { | |
2052 | READ_BUF(16); | |
2053 | READ64(fsid->major); | |
2054 | READ64(fsid->minor); | |
2055 | bitmap[0] &= ~FATTR4_WORD0_FSID; | |
2056 | } | |
2057 | dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__, | |
2058 | (unsigned long long)fsid->major, | |
2059 | (unsigned long long)fsid->minor); | |
2060 | return 0; | |
2061 | } | |
2062 | ||
2063 | static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2064 | { | |
2065 | uint32_t *p; | |
2066 | ||
2067 | *res = 60; | |
2068 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) | |
2069 | return -EIO; | |
2070 | if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { | |
2071 | READ_BUF(4); | |
2072 | READ32(*res); | |
2073 | bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; | |
2074 | } | |
2075 | dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res); | |
2076 | return 0; | |
2077 | } | |
2078 | ||
2079 | static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2080 | { | |
2081 | uint32_t *p; | |
2082 | ||
2083 | *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; | |
2084 | if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) | |
2085 | return -EIO; | |
2086 | if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { | |
2087 | READ_BUF(4); | |
2088 | READ32(*res); | |
2089 | bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; | |
2090 | } | |
2091 | dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res); | |
2092 | return 0; | |
2093 | } | |
2094 | ||
2095 | static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) | |
2096 | { | |
2097 | uint32_t *p; | |
2098 | ||
2099 | *fileid = 0; | |
2100 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) | |
2101 | return -EIO; | |
2102 | if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { | |
2103 | READ_BUF(8); | |
2104 | READ64(*fileid); | |
2105 | bitmap[0] &= ~FATTR4_WORD0_FILEID; | |
2106 | } | |
2107 | dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid); | |
2108 | return 0; | |
2109 | } | |
2110 | ||
2111 | static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2112 | { | |
2113 | uint32_t *p; | |
2114 | int status = 0; | |
2115 | ||
2116 | *res = 0; | |
2117 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) | |
2118 | return -EIO; | |
2119 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { | |
2120 | READ_BUF(8); | |
2121 | READ64(*res); | |
2122 | bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; | |
2123 | } | |
2124 | dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2125 | return status; | |
2126 | } | |
2127 | ||
2128 | static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2129 | { | |
2130 | uint32_t *p; | |
2131 | int status = 0; | |
2132 | ||
2133 | *res = 0; | |
2134 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) | |
2135 | return -EIO; | |
2136 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { | |
2137 | READ_BUF(8); | |
2138 | READ64(*res); | |
2139 | bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; | |
2140 | } | |
2141 | dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2142 | return status; | |
2143 | } | |
2144 | ||
2145 | static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2146 | { | |
2147 | uint32_t *p; | |
2148 | int status = 0; | |
2149 | ||
2150 | *res = 0; | |
2151 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) | |
2152 | return -EIO; | |
2153 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { | |
2154 | READ_BUF(8); | |
2155 | READ64(*res); | |
2156 | bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; | |
2157 | } | |
2158 | dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2159 | return status; | |
2160 | } | |
2161 | ||
2162 | static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2163 | { | |
2164 | uint32_t *p; | |
2165 | int status = 0; | |
2166 | ||
2167 | *res = 0; | |
2168 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) | |
2169 | return -EIO; | |
2170 | if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { | |
2171 | READ_BUF(8); | |
2172 | READ64(*res); | |
2173 | bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; | |
2174 | } | |
2175 | dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2176 | return status; | |
2177 | } | |
2178 | ||
2179 | static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) | |
2180 | { | |
2181 | uint32_t *p; | |
2182 | int status = 0; | |
2183 | ||
2184 | *maxlink = 1; | |
2185 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) | |
2186 | return -EIO; | |
2187 | if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { | |
2188 | READ_BUF(4); | |
2189 | READ32(*maxlink); | |
2190 | bitmap[0] &= ~FATTR4_WORD0_MAXLINK; | |
2191 | } | |
2192 | dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink); | |
2193 | return status; | |
2194 | } | |
2195 | ||
2196 | static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) | |
2197 | { | |
2198 | uint32_t *p; | |
2199 | int status = 0; | |
2200 | ||
2201 | *maxname = 1024; | |
2202 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) | |
2203 | return -EIO; | |
2204 | if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { | |
2205 | READ_BUF(4); | |
2206 | READ32(*maxname); | |
2207 | bitmap[0] &= ~FATTR4_WORD0_MAXNAME; | |
2208 | } | |
2209 | dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname); | |
2210 | return status; | |
2211 | } | |
2212 | ||
2213 | static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2214 | { | |
2215 | uint32_t *p; | |
2216 | int status = 0; | |
2217 | ||
2218 | *res = 1024; | |
2219 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) | |
2220 | return -EIO; | |
2221 | if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { | |
2222 | uint64_t maxread; | |
2223 | READ_BUF(8); | |
2224 | READ64(maxread); | |
2225 | if (maxread > 0x7FFFFFFF) | |
2226 | maxread = 0x7FFFFFFF; | |
2227 | *res = (uint32_t)maxread; | |
2228 | bitmap[0] &= ~FATTR4_WORD0_MAXREAD; | |
2229 | } | |
2230 | dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2231 | return status; | |
2232 | } | |
2233 | ||
2234 | static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2235 | { | |
2236 | uint32_t *p; | |
2237 | int status = 0; | |
2238 | ||
2239 | *res = 1024; | |
2240 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) | |
2241 | return -EIO; | |
2242 | if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { | |
2243 | uint64_t maxwrite; | |
2244 | READ_BUF(8); | |
2245 | READ64(maxwrite); | |
2246 | if (maxwrite > 0x7FFFFFFF) | |
2247 | maxwrite = 0x7FFFFFFF; | |
2248 | *res = (uint32_t)maxwrite; | |
2249 | bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; | |
2250 | } | |
2251 | dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2252 | return status; | |
2253 | } | |
2254 | ||
2255 | static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode) | |
2256 | { | |
2257 | uint32_t *p; | |
2258 | ||
2259 | *mode = 0; | |
2260 | if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) | |
2261 | return -EIO; | |
2262 | if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { | |
2263 | READ_BUF(4); | |
2264 | READ32(*mode); | |
2265 | *mode &= ~S_IFMT; | |
2266 | bitmap[1] &= ~FATTR4_WORD1_MODE; | |
2267 | } | |
2268 | dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode); | |
2269 | return 0; | |
2270 | } | |
2271 | ||
2272 | static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) | |
2273 | { | |
2274 | uint32_t *p; | |
2275 | ||
2276 | *nlink = 1; | |
2277 | if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) | |
2278 | return -EIO; | |
2279 | if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { | |
2280 | READ_BUF(4); | |
2281 | READ32(*nlink); | |
2282 | bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; | |
2283 | } | |
2284 | dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink); | |
2285 | return 0; | |
2286 | } | |
2287 | ||
2288 | static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid) | |
2289 | { | |
2290 | uint32_t len, *p; | |
2291 | ||
2292 | *uid = -2; | |
2293 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) | |
2294 | return -EIO; | |
2295 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { | |
2296 | READ_BUF(4); | |
2297 | READ32(len); | |
2298 | READ_BUF(len); | |
2299 | if (len < XDR_MAX_NETOBJ) { | |
2300 | if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0) | |
2301 | dprintk("%s: nfs_map_name_to_uid failed!\n", | |
2302 | __FUNCTION__); | |
2303 | } else | |
2304 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2305 | __FUNCTION__, len); | |
2306 | bitmap[1] &= ~FATTR4_WORD1_OWNER; | |
2307 | } | |
2308 | dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid); | |
2309 | return 0; | |
2310 | } | |
2311 | ||
2312 | static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid) | |
2313 | { | |
2314 | uint32_t len, *p; | |
2315 | ||
2316 | *gid = -2; | |
2317 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) | |
2318 | return -EIO; | |
2319 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { | |
2320 | READ_BUF(4); | |
2321 | READ32(len); | |
2322 | READ_BUF(len); | |
2323 | if (len < XDR_MAX_NETOBJ) { | |
2324 | if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0) | |
2325 | dprintk("%s: nfs_map_group_to_gid failed!\n", | |
2326 | __FUNCTION__); | |
2327 | } else | |
2328 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2329 | __FUNCTION__, len); | |
2330 | bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; | |
2331 | } | |
2332 | dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid); | |
2333 | return 0; | |
2334 | } | |
2335 | ||
2336 | static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) | |
2337 | { | |
2338 | uint32_t major = 0, minor = 0, *p; | |
2339 | ||
2340 | *rdev = MKDEV(0,0); | |
2341 | if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) | |
2342 | return -EIO; | |
2343 | if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { | |
2344 | dev_t tmp; | |
2345 | ||
2346 | READ_BUF(8); | |
2347 | READ32(major); | |
2348 | READ32(minor); | |
2349 | tmp = MKDEV(major, minor); | |
2350 | if (MAJOR(tmp) == major && MINOR(tmp) == minor) | |
2351 | *rdev = tmp; | |
2352 | bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; | |
2353 | } | |
2354 | dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor); | |
2355 | return 0; | |
2356 | } | |
2357 | ||
2358 | static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2359 | { | |
2360 | uint32_t *p; | |
2361 | int status = 0; | |
2362 | ||
2363 | *res = 0; | |
2364 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) | |
2365 | return -EIO; | |
2366 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { | |
2367 | READ_BUF(8); | |
2368 | READ64(*res); | |
2369 | bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; | |
2370 | } | |
2371 | dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2372 | return status; | |
2373 | } | |
2374 | ||
2375 | static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2376 | { | |
2377 | uint32_t *p; | |
2378 | int status = 0; | |
2379 | ||
2380 | *res = 0; | |
2381 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) | |
2382 | return -EIO; | |
2383 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { | |
2384 | READ_BUF(8); | |
2385 | READ64(*res); | |
2386 | bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; | |
2387 | } | |
2388 | dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2389 | return status; | |
2390 | } | |
2391 | ||
2392 | static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2393 | { | |
2394 | uint32_t *p; | |
2395 | int status = 0; | |
2396 | ||
2397 | *res = 0; | |
2398 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) | |
2399 | return -EIO; | |
2400 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { | |
2401 | READ_BUF(8); | |
2402 | READ64(*res); | |
2403 | bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; | |
2404 | } | |
2405 | dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2406 | return status; | |
2407 | } | |
2408 | ||
2409 | static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) | |
2410 | { | |
2411 | uint32_t *p; | |
2412 | ||
2413 | *used = 0; | |
2414 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) | |
2415 | return -EIO; | |
2416 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { | |
2417 | READ_BUF(8); | |
2418 | READ64(*used); | |
2419 | bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; | |
2420 | } | |
2421 | dprintk("%s: space used=%Lu\n", __FUNCTION__, | |
2422 | (unsigned long long)*used); | |
2423 | return 0; | |
2424 | } | |
2425 | ||
2426 | static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) | |
2427 | { | |
2428 | uint32_t *p; | |
2429 | uint64_t sec; | |
2430 | uint32_t nsec; | |
2431 | ||
2432 | READ_BUF(12); | |
2433 | READ64(sec); | |
2434 | READ32(nsec); | |
2435 | time->tv_sec = (time_t)sec; | |
2436 | time->tv_nsec = (long)nsec; | |
2437 | return 0; | |
2438 | } | |
2439 | ||
2440 | static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2441 | { | |
2442 | int status = 0; | |
2443 | ||
2444 | time->tv_sec = 0; | |
2445 | time->tv_nsec = 0; | |
2446 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) | |
2447 | return -EIO; | |
2448 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { | |
2449 | status = decode_attr_time(xdr, time); | |
2450 | bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; | |
2451 | } | |
2452 | dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2453 | return status; | |
2454 | } | |
2455 | ||
2456 | static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2457 | { | |
2458 | int status = 0; | |
2459 | ||
2460 | time->tv_sec = 0; | |
2461 | time->tv_nsec = 0; | |
2462 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) | |
2463 | return -EIO; | |
2464 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { | |
2465 | status = decode_attr_time(xdr, time); | |
2466 | bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; | |
2467 | } | |
2468 | dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2469 | return status; | |
2470 | } | |
2471 | ||
2472 | static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2473 | { | |
2474 | int status = 0; | |
2475 | ||
2476 | time->tv_sec = 0; | |
2477 | time->tv_nsec = 0; | |
2478 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) | |
2479 | return -EIO; | |
2480 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { | |
2481 | status = decode_attr_time(xdr, time); | |
2482 | bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; | |
2483 | } | |
2484 | dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2485 | return status; | |
2486 | } | |
2487 | ||
2488 | static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen) | |
2489 | { | |
2490 | unsigned int attrwords = XDR_QUADLEN(attrlen); | |
2491 | unsigned int nwords = xdr->p - savep; | |
2492 | ||
2493 | if (unlikely(attrwords != nwords)) { | |
2494 | printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n", | |
2495 | __FUNCTION__, | |
2496 | attrwords << 2, | |
2497 | (attrwords < nwords) ? '<' : '>', | |
2498 | nwords << 2); | |
2499 | return -EIO; | |
2500 | } | |
2501 | return 0; | |
2502 | } | |
2503 | ||
2504 | static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2505 | { | |
2506 | uint32_t *p; | |
2507 | ||
2508 | READ_BUF(20); | |
2509 | READ32(cinfo->atomic); | |
2510 | READ64(cinfo->before); | |
2511 | READ64(cinfo->after); | |
2512 | return 0; | |
2513 | } | |
2514 | ||
2515 | static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) | |
2516 | { | |
2517 | uint32_t *p; | |
2518 | uint32_t supp, acc; | |
2519 | int status; | |
2520 | ||
2521 | status = decode_op_hdr(xdr, OP_ACCESS); | |
2522 | if (status) | |
2523 | return status; | |
2524 | READ_BUF(8); | |
2525 | READ32(supp); | |
2526 | READ32(acc); | |
2527 | access->supported = supp; | |
2528 | access->access = acc; | |
2529 | return 0; | |
2530 | } | |
2531 | ||
2532 | static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2533 | { | |
2534 | uint32_t *p; | |
2535 | int status; | |
2536 | ||
2537 | status = decode_op_hdr(xdr, OP_CLOSE); | |
2538 | if (status) | |
2539 | return status; | |
2540 | READ_BUF(sizeof(res->stateid.data)); | |
2541 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2542 | return 0; | |
2543 | } | |
2544 | ||
2545 | static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) | |
2546 | { | |
2547 | uint32_t *p; | |
2548 | int status; | |
2549 | ||
2550 | status = decode_op_hdr(xdr, OP_COMMIT); | |
2551 | if (status) | |
2552 | return status; | |
2553 | READ_BUF(8); | |
2554 | COPYMEM(res->verf->verifier, 8); | |
2555 | return 0; | |
2556 | } | |
2557 | ||
2558 | static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2559 | { | |
2560 | uint32_t *p; | |
2561 | uint32_t bmlen; | |
2562 | int status; | |
2563 | ||
2564 | status = decode_op_hdr(xdr, OP_CREATE); | |
2565 | if (status) | |
2566 | return status; | |
2567 | if ((status = decode_change_info(xdr, cinfo))) | |
2568 | return status; | |
2569 | READ_BUF(4); | |
2570 | READ32(bmlen); | |
2571 | READ_BUF(bmlen << 2); | |
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) | |
2576 | { | |
2577 | uint32_t *savep; | |
2578 | uint32_t attrlen, | |
2579 | bitmap[2] = {0}; | |
2580 | int status; | |
2581 | ||
2582 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2583 | goto xdr_error; | |
2584 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2585 | goto xdr_error; | |
2586 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2587 | goto xdr_error; | |
2588 | if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) | |
2589 | goto xdr_error; | |
2590 | if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) | |
2591 | goto xdr_error; | |
2592 | if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) | |
2593 | goto xdr_error; | |
2594 | if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) | |
2595 | goto xdr_error; | |
2596 | status = verify_attr_len(xdr, savep, attrlen); | |
2597 | xdr_error: | |
2598 | if (status != 0) | |
2599 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2600 | return status; | |
2601 | } | |
2602 | ||
2603 | static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) | |
2604 | { | |
2605 | uint32_t *savep; | |
2606 | uint32_t attrlen, | |
2607 | bitmap[2] = {0}; | |
2608 | int status; | |
2609 | ||
2610 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2611 | goto xdr_error; | |
2612 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2613 | goto xdr_error; | |
2614 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2615 | goto xdr_error; | |
2616 | ||
2617 | if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) | |
2618 | goto xdr_error; | |
2619 | if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) | |
2620 | goto xdr_error; | |
2621 | if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) | |
2622 | goto xdr_error; | |
2623 | if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) | |
2624 | goto xdr_error; | |
2625 | if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) | |
2626 | goto xdr_error; | |
2627 | if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) | |
2628 | goto xdr_error; | |
2629 | ||
2630 | status = verify_attr_len(xdr, savep, attrlen); | |
2631 | xdr_error: | |
2632 | if (status != 0) | |
2633 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2634 | return status; | |
2635 | } | |
2636 | ||
2637 | static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) | |
2638 | { | |
2639 | uint32_t *savep; | |
2640 | uint32_t attrlen, | |
2641 | bitmap[2] = {0}; | |
2642 | int status; | |
2643 | ||
2644 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2645 | goto xdr_error; | |
2646 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2647 | goto xdr_error; | |
2648 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2649 | goto xdr_error; | |
2650 | ||
2651 | if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) | |
2652 | goto xdr_error; | |
2653 | if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) | |
2654 | goto xdr_error; | |
2655 | ||
2656 | status = verify_attr_len(xdr, savep, attrlen); | |
2657 | xdr_error: | |
2658 | if (status != 0) | |
2659 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2660 | return status; | |
2661 | } | |
2662 | ||
2663 | static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server) | |
2664 | { | |
2665 | uint32_t *savep; | |
2666 | uint32_t attrlen, | |
2667 | bitmap[2] = {0}, | |
2668 | type; | |
2669 | int status, fmode = 0; | |
2670 | ||
2671 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2672 | goto xdr_error; | |
2673 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2674 | goto xdr_error; | |
2675 | ||
2676 | fattr->bitmap[0] = bitmap[0]; | |
2677 | fattr->bitmap[1] = bitmap[1]; | |
2678 | ||
2679 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2680 | goto xdr_error; | |
2681 | ||
2682 | ||
2683 | if ((status = decode_attr_type(xdr, bitmap, &type)) != 0) | |
2684 | goto xdr_error; | |
2685 | fattr->type = nfs_type2fmt[type].nfs2type; | |
2686 | fmode = nfs_type2fmt[type].mode; | |
2687 | ||
2688 | if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0) | |
2689 | goto xdr_error; | |
2690 | if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0) | |
2691 | goto xdr_error; | |
2692 | if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0) | |
2693 | goto xdr_error; | |
2694 | if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0) | |
2695 | goto xdr_error; | |
2696 | if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0) | |
2697 | goto xdr_error; | |
2698 | fattr->mode |= fmode; | |
2699 | if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0) | |
2700 | goto xdr_error; | |
2701 | if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0) | |
2702 | goto xdr_error; | |
2703 | if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0) | |
2704 | goto xdr_error; | |
2705 | if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0) | |
2706 | goto xdr_error; | |
2707 | if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0) | |
2708 | goto xdr_error; | |
2709 | if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0) | |
2710 | goto xdr_error; | |
2711 | if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0) | |
2712 | goto xdr_error; | |
2713 | if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0) | |
2714 | goto xdr_error; | |
2715 | if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) { | |
2716 | fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4; | |
2717 | fattr->timestamp = jiffies; | |
2718 | } | |
2719 | xdr_error: | |
2720 | if (status != 0) | |
2721 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2722 | return status; | |
2723 | } | |
2724 | ||
2725 | ||
2726 | static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) | |
2727 | { | |
2728 | uint32_t *savep; | |
2729 | uint32_t attrlen, bitmap[2]; | |
2730 | int status; | |
2731 | ||
2732 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2733 | goto xdr_error; | |
2734 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2735 | goto xdr_error; | |
2736 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2737 | goto xdr_error; | |
2738 | ||
2739 | fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ | |
2740 | ||
2741 | if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) | |
2742 | goto xdr_error; | |
2743 | if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) | |
2744 | goto xdr_error; | |
2745 | if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) | |
2746 | goto xdr_error; | |
2747 | fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; | |
2748 | if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) | |
2749 | goto xdr_error; | |
2750 | fsinfo->wtpref = fsinfo->wtmax; | |
2751 | ||
2752 | status = verify_attr_len(xdr, savep, attrlen); | |
2753 | xdr_error: | |
2754 | if (status != 0) | |
2755 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2756 | return status; | |
2757 | } | |
2758 | ||
2759 | static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) | |
2760 | { | |
2761 | uint32_t *p; | |
2762 | uint32_t len; | |
2763 | int status; | |
2764 | ||
2765 | status = decode_op_hdr(xdr, OP_GETFH); | |
2766 | if (status) | |
2767 | return status; | |
2768 | /* Zero handle first to allow comparisons */ | |
2769 | memset(fh, 0, sizeof(*fh)); | |
2770 | ||
2771 | READ_BUF(4); | |
2772 | READ32(len); | |
2773 | if (len > NFS4_FHSIZE) | |
2774 | return -EIO; | |
2775 | fh->size = len; | |
2776 | READ_BUF(len); | |
2777 | COPYMEM(fh->data, len); | |
2778 | return 0; | |
2779 | } | |
2780 | ||
2781 | static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2782 | { | |
2783 | int status; | |
2784 | ||
2785 | status = decode_op_hdr(xdr, OP_LINK); | |
2786 | if (status) | |
2787 | return status; | |
2788 | return decode_change_info(xdr, cinfo); | |
2789 | } | |
2790 | ||
2791 | /* | |
2792 | * We create the owner, so we know a proper owner.id length is 4. | |
2793 | */ | |
2794 | static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied) | |
2795 | { | |
2796 | uint32_t *p; | |
2797 | uint32_t namelen; | |
2798 | ||
2799 | READ_BUF(32); | |
2800 | READ64(denied->offset); | |
2801 | READ64(denied->length); | |
2802 | READ32(denied->type); | |
2803 | READ64(denied->owner.clientid); | |
2804 | READ32(namelen); | |
2805 | READ_BUF(namelen); | |
2806 | if (namelen == 4) | |
2807 | READ32(denied->owner.id); | |
2808 | return -NFS4ERR_DENIED; | |
2809 | } | |
2810 | ||
2811 | static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2812 | { | |
2813 | uint32_t *p; | |
2814 | int status; | |
2815 | ||
2816 | status = decode_op_hdr(xdr, OP_LOCK); | |
2817 | if (status == 0) { | |
2818 | READ_BUF(sizeof(nfs4_stateid)); | |
2819 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2820 | } else if (status == -NFS4ERR_DENIED) | |
2821 | return decode_lock_denied(xdr, &res->u.denied); | |
2822 | return status; | |
2823 | } | |
2824 | ||
2825 | static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2826 | { | |
2827 | int status; | |
2828 | status = decode_op_hdr(xdr, OP_LOCKT); | |
2829 | if (status == -NFS4ERR_DENIED) | |
2830 | return decode_lock_denied(xdr, &res->u.denied); | |
2831 | return status; | |
2832 | } | |
2833 | ||
2834 | static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2835 | { | |
2836 | uint32_t *p; | |
2837 | int status; | |
2838 | ||
2839 | status = decode_op_hdr(xdr, OP_LOCKU); | |
2840 | if (status == 0) { | |
2841 | READ_BUF(sizeof(nfs4_stateid)); | |
2842 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2843 | } | |
2844 | return status; | |
2845 | } | |
2846 | ||
2847 | static int decode_lookup(struct xdr_stream *xdr) | |
2848 | { | |
2849 | return decode_op_hdr(xdr, OP_LOOKUP); | |
2850 | } | |
2851 | ||
2852 | /* This is too sick! */ | |
2853 | static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) | |
2854 | { | |
2855 | uint32_t *p; | |
2856 | uint32_t limit_type, nblocks, blocksize; | |
2857 | ||
2858 | READ_BUF(12); | |
2859 | READ32(limit_type); | |
2860 | switch (limit_type) { | |
2861 | case 1: | |
2862 | READ64(*maxsize); | |
2863 | break; | |
2864 | case 2: | |
2865 | READ32(nblocks); | |
2866 | READ32(blocksize); | |
2867 | *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; | |
2868 | } | |
2869 | return 0; | |
2870 | } | |
2871 | ||
2872 | static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) | |
2873 | { | |
2874 | uint32_t *p; | |
2875 | uint32_t delegation_type; | |
2876 | ||
2877 | READ_BUF(4); | |
2878 | READ32(delegation_type); | |
2879 | if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { | |
2880 | res->delegation_type = 0; | |
2881 | return 0; | |
2882 | } | |
2883 | READ_BUF(20); | |
2884 | COPYMEM(res->delegation.data, sizeof(res->delegation.data)); | |
2885 | READ32(res->do_recall); | |
2886 | switch (delegation_type) { | |
2887 | case NFS4_OPEN_DELEGATE_READ: | |
2888 | res->delegation_type = FMODE_READ; | |
2889 | break; | |
2890 | case NFS4_OPEN_DELEGATE_WRITE: | |
2891 | res->delegation_type = FMODE_WRITE|FMODE_READ; | |
2892 | if (decode_space_limit(xdr, &res->maxsize) < 0) | |
2893 | return -EIO; | |
2894 | } | |
2895 | return decode_ace(xdr, NULL, res->server->nfs4_state); | |
2896 | } | |
2897 | ||
2898 | static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) | |
2899 | { | |
2900 | uint32_t *p; | |
2901 | uint32_t bmlen; | |
2902 | int status; | |
2903 | ||
2904 | status = decode_op_hdr(xdr, OP_OPEN); | |
2905 | if (status) | |
2906 | return status; | |
2907 | READ_BUF(sizeof(res->stateid.data)); | |
2908 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2909 | ||
2910 | decode_change_info(xdr, &res->cinfo); | |
2911 | ||
2912 | READ_BUF(8); | |
2913 | READ32(res->rflags); | |
2914 | READ32(bmlen); | |
2915 | if (bmlen > 10) | |
2916 | goto xdr_error; | |
2917 | ||
2918 | READ_BUF(bmlen << 2); | |
2919 | p += bmlen; | |
2920 | return decode_delegation(xdr, res); | |
2921 | xdr_error: | |
2922 | printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__); | |
2923 | return -EIO; | |
2924 | } | |
2925 | ||
2926 | static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) | |
2927 | { | |
2928 | uint32_t *p; | |
2929 | int status; | |
2930 | ||
2931 | status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); | |
2932 | if (status) | |
2933 | return status; | |
2934 | READ_BUF(sizeof(res->stateid.data)); | |
2935 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2936 | return 0; | |
2937 | } | |
2938 | ||
2939 | static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2940 | { | |
2941 | uint32_t *p; | |
2942 | int status; | |
2943 | ||
2944 | status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); | |
2945 | if (status) | |
2946 | return status; | |
2947 | READ_BUF(sizeof(res->stateid.data)); | |
2948 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2949 | return 0; | |
2950 | } | |
2951 | ||
2952 | static int decode_putfh(struct xdr_stream *xdr) | |
2953 | { | |
2954 | return decode_op_hdr(xdr, OP_PUTFH); | |
2955 | } | |
2956 | ||
2957 | static int decode_putrootfh(struct xdr_stream *xdr) | |
2958 | { | |
2959 | return decode_op_hdr(xdr, OP_PUTROOTFH); | |
2960 | } | |
2961 | ||
2962 | static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) | |
2963 | { | |
2964 | struct kvec *iov = req->rq_rcv_buf.head; | |
2965 | uint32_t *p; | |
2966 | uint32_t count, eof, recvd, hdrlen; | |
2967 | int status; | |
2968 | ||
2969 | status = decode_op_hdr(xdr, OP_READ); | |
2970 | if (status) | |
2971 | return status; | |
2972 | READ_BUF(8); | |
2973 | READ32(eof); | |
2974 | READ32(count); | |
2975 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
2976 | recvd = req->rq_rcv_buf.len - hdrlen; | |
2977 | if (count > recvd) { | |
2978 | printk(KERN_WARNING "NFS: server cheating in read reply: " | |
2979 | "count %u > recvd %u\n", count, recvd); | |
2980 | count = recvd; | |
2981 | eof = 0; | |
2982 | } | |
2983 | xdr_read_pages(xdr, count); | |
2984 | res->eof = eof; | |
2985 | res->count = count; | |
2986 | return 0; | |
2987 | } | |
2988 | ||
2989 | static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) | |
2990 | { | |
2991 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
2992 | struct page *page = *rcvbuf->pages; | |
2993 | struct kvec *iov = rcvbuf->head; | |
2994 | unsigned int nr, pglen = rcvbuf->page_len; | |
2995 | uint32_t *end, *entry, *p, *kaddr; | |
2996 | uint32_t len, attrlen; | |
2997 | int hdrlen, recvd, status; | |
2998 | ||
2999 | status = decode_op_hdr(xdr, OP_READDIR); | |
3000 | if (status) | |
3001 | return status; | |
3002 | READ_BUF(8); | |
3003 | COPYMEM(readdir->verifier.data, 8); | |
3004 | ||
3005 | hdrlen = (char *) p - (char *) iov->iov_base; | |
3006 | recvd = rcvbuf->len - hdrlen; | |
3007 | if (pglen > recvd) | |
3008 | pglen = recvd; | |
3009 | xdr_read_pages(xdr, pglen); | |
3010 | ||
3011 | BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE); | |
3012 | kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0); | |
3013 | end = (uint32_t *) ((char *)p + pglen + readdir->pgbase); | |
3014 | entry = p; | |
3015 | for (nr = 0; *p++; nr++) { | |
3016 | if (p + 3 > end) | |
3017 | goto short_pkt; | |
3018 | p += 2; /* cookie */ | |
3019 | len = ntohl(*p++); /* filename length */ | |
3020 | if (len > NFS4_MAXNAMLEN) { | |
3021 | printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len); | |
3022 | goto err_unmap; | |
3023 | } | |
3024 | p += XDR_QUADLEN(len); | |
3025 | if (p + 1 > end) | |
3026 | goto short_pkt; | |
3027 | len = ntohl(*p++); /* bitmap length */ | |
3028 | p += len; | |
3029 | if (p + 1 > end) | |
3030 | goto short_pkt; | |
3031 | attrlen = XDR_QUADLEN(ntohl(*p++)); | |
3032 | p += attrlen; /* attributes */ | |
3033 | if (p + 2 > end) | |
3034 | goto short_pkt; | |
3035 | entry = p; | |
3036 | } | |
3037 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
3038 | goto short_pkt; | |
3039 | out: | |
3040 | kunmap_atomic(kaddr, KM_USER0); | |
3041 | return 0; | |
3042 | short_pkt: | |
3043 | entry[0] = entry[1] = 0; | |
3044 | /* truncate listing ? */ | |
3045 | if (!nr) { | |
3046 | printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); | |
3047 | entry[1] = 1; | |
3048 | } | |
3049 | goto out; | |
3050 | err_unmap: | |
3051 | kunmap_atomic(kaddr, KM_USER0); | |
3052 | return -errno_NFSERR_IO; | |
3053 | } | |
3054 | ||
3055 | static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) | |
3056 | { | |
3057 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
3058 | struct kvec *iov = rcvbuf->head; | |
3059 | int hdrlen, len, recvd; | |
3060 | uint32_t *p; | |
3061 | char *kaddr; | |
3062 | int status; | |
3063 | ||
3064 | status = decode_op_hdr(xdr, OP_READLINK); | |
3065 | if (status) | |
3066 | return status; | |
3067 | ||
3068 | /* Convert length of symlink */ | |
3069 | READ_BUF(4); | |
3070 | READ32(len); | |
3071 | if (len >= rcvbuf->page_len || len <= 0) { | |
3072 | dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); | |
3073 | return -ENAMETOOLONG; | |
3074 | } | |
3075 | hdrlen = (char *) xdr->p - (char *) iov->iov_base; | |
3076 | recvd = req->rq_rcv_buf.len - hdrlen; | |
3077 | if (recvd < len) { | |
3078 | printk(KERN_WARNING "NFS: server cheating in readlink reply: " | |
3079 | "count %u > recvd %u\n", len, recvd); | |
3080 | return -EIO; | |
3081 | } | |
3082 | xdr_read_pages(xdr, len); | |
3083 | /* | |
3084 | * The XDR encode routine has set things up so that | |
3085 | * the link text will be copied directly into the | |
3086 | * buffer. We just have to do overflow-checking, | |
3087 | * and and null-terminate the text (the VFS expects | |
3088 | * null-termination). | |
3089 | */ | |
3090 | kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
3091 | kaddr[len+rcvbuf->page_base] = '\0'; | |
3092 | kunmap_atomic(kaddr, KM_USER0); | |
3093 | return 0; | |
3094 | } | |
3095 | ||
3096 | static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
3097 | { | |
3098 | int status; | |
3099 | ||
3100 | status = decode_op_hdr(xdr, OP_REMOVE); | |
3101 | if (status) | |
3102 | goto out; | |
3103 | status = decode_change_info(xdr, cinfo); | |
3104 | out: | |
3105 | return status; | |
3106 | } | |
3107 | ||
3108 | static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, | |
3109 | struct nfs4_change_info *new_cinfo) | |
3110 | { | |
3111 | int status; | |
3112 | ||
3113 | status = decode_op_hdr(xdr, OP_RENAME); | |
3114 | if (status) | |
3115 | goto out; | |
3116 | if ((status = decode_change_info(xdr, old_cinfo))) | |
3117 | goto out; | |
3118 | status = decode_change_info(xdr, new_cinfo); | |
3119 | out: | |
3120 | return status; | |
3121 | } | |
3122 | ||
3123 | static int decode_renew(struct xdr_stream *xdr) | |
3124 | { | |
3125 | return decode_op_hdr(xdr, OP_RENEW); | |
3126 | } | |
3127 | ||
3128 | static int | |
3129 | decode_savefh(struct xdr_stream *xdr) | |
3130 | { | |
3131 | return decode_op_hdr(xdr, OP_SAVEFH); | |
3132 | } | |
3133 | ||
3134 | static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res) | |
3135 | { | |
3136 | uint32_t *p; | |
3137 | uint32_t bmlen; | |
3138 | int status; | |
3139 | ||
3140 | ||
3141 | status = decode_op_hdr(xdr, OP_SETATTR); | |
3142 | if (status) | |
3143 | return status; | |
3144 | READ_BUF(4); | |
3145 | READ32(bmlen); | |
3146 | READ_BUF(bmlen << 2); | |
3147 | return 0; | |
3148 | } | |
3149 | ||
3150 | static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp) | |
3151 | { | |
3152 | uint32_t *p; | |
3153 | uint32_t opnum; | |
3154 | int32_t nfserr; | |
3155 | ||
3156 | READ_BUF(8); | |
3157 | READ32(opnum); | |
3158 | if (opnum != OP_SETCLIENTID) { | |
3159 | printk(KERN_NOTICE | |
3160 | "nfs4_decode_setclientid: Server returned operation" | |
3161 | " %d\n", opnum); | |
3162 | return -EIO; | |
3163 | } | |
3164 | READ32(nfserr); | |
3165 | if (nfserr == NFS_OK) { | |
3166 | READ_BUF(8 + sizeof(clp->cl_confirm.data)); | |
3167 | READ64(clp->cl_clientid); | |
3168 | COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data)); | |
3169 | } else if (nfserr == NFSERR_CLID_INUSE) { | |
3170 | uint32_t len; | |
3171 | ||
3172 | /* skip netid string */ | |
3173 | READ_BUF(4); | |
3174 | READ32(len); | |
3175 | READ_BUF(len); | |
3176 | ||
3177 | /* skip uaddr string */ | |
3178 | READ_BUF(4); | |
3179 | READ32(len); | |
3180 | READ_BUF(len); | |
3181 | return -NFSERR_CLID_INUSE; | |
3182 | } else | |
3183 | return -nfs_stat_to_errno(nfserr); | |
3184 | ||
3185 | return 0; | |
3186 | } | |
3187 | ||
3188 | static int decode_setclientid_confirm(struct xdr_stream *xdr) | |
3189 | { | |
3190 | return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); | |
3191 | } | |
3192 | ||
3193 | static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) | |
3194 | { | |
3195 | uint32_t *p; | |
3196 | int status; | |
3197 | ||
3198 | status = decode_op_hdr(xdr, OP_WRITE); | |
3199 | if (status) | |
3200 | return status; | |
3201 | ||
3202 | READ_BUF(16); | |
3203 | READ32(res->count); | |
3204 | READ32(res->verf->committed); | |
3205 | COPYMEM(res->verf->verifier, 8); | |
3206 | return 0; | |
3207 | } | |
3208 | ||
3209 | static int decode_delegreturn(struct xdr_stream *xdr) | |
3210 | { | |
3211 | return decode_op_hdr(xdr, OP_DELEGRETURN); | |
3212 | } | |
3213 | ||
3214 | /* | |
3215 | * Decode OPEN_DOWNGRADE response | |
3216 | */ | |
3217 | static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3218 | { | |
3219 | struct xdr_stream xdr; | |
3220 | struct compound_hdr hdr; | |
3221 | int status; | |
3222 | ||
3223 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3224 | status = decode_compound_hdr(&xdr, &hdr); | |
3225 | if (status) | |
3226 | goto out; | |
3227 | status = decode_putfh(&xdr); | |
3228 | if (status) | |
3229 | goto out; | |
3230 | status = decode_open_downgrade(&xdr, res); | |
3231 | out: | |
3232 | return status; | |
3233 | } | |
3234 | ||
3235 | /* | |
3236 | * END OF "GENERIC" DECODE ROUTINES. | |
3237 | */ | |
3238 | ||
3239 | /* | |
3240 | * Decode ACCESS response | |
3241 | */ | |
3242 | static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res) | |
3243 | { | |
3244 | struct xdr_stream xdr; | |
3245 | struct compound_hdr hdr; | |
3246 | int status; | |
3247 | ||
3248 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3249 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3250 | goto out; | |
3251 | if ((status = decode_putfh(&xdr)) == 0) | |
3252 | status = decode_access(&xdr, res); | |
3253 | out: | |
3254 | return status; | |
3255 | } | |
3256 | ||
3257 | /* | |
3258 | * Decode LOOKUP response | |
3259 | */ | |
3260 | static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3261 | { | |
3262 | struct xdr_stream xdr; | |
3263 | struct compound_hdr hdr; | |
3264 | int status; | |
3265 | ||
3266 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3267 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3268 | goto out; | |
3269 | if ((status = decode_putfh(&xdr)) != 0) | |
3270 | goto out; | |
3271 | if ((status = decode_lookup(&xdr)) != 0) | |
3272 | goto out; | |
3273 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3274 | goto out; | |
3275 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3276 | out: | |
3277 | return status; | |
3278 | } | |
3279 | ||
3280 | /* | |
3281 | * Decode LOOKUP_ROOT response | |
3282 | */ | |
3283 | static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3284 | { | |
3285 | struct xdr_stream xdr; | |
3286 | struct compound_hdr hdr; | |
3287 | int status; | |
3288 | ||
3289 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3290 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3291 | goto out; | |
3292 | if ((status = decode_putrootfh(&xdr)) != 0) | |
3293 | goto out; | |
3294 | if ((status = decode_getfh(&xdr, res->fh)) == 0) | |
3295 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3296 | out: | |
3297 | return status; | |
3298 | } | |
3299 | ||
3300 | /* | |
3301 | * Decode REMOVE response | |
3302 | */ | |
3303 | static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3304 | { | |
3305 | struct xdr_stream xdr; | |
3306 | struct compound_hdr hdr; | |
3307 | int status; | |
3308 | ||
3309 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3310 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3311 | goto out; | |
3312 | if ((status = decode_putfh(&xdr)) == 0) | |
3313 | status = decode_remove(&xdr, cinfo); | |
3314 | out: | |
3315 | return status; | |
3316 | } | |
3317 | ||
3318 | /* | |
3319 | * Decode RENAME response | |
3320 | */ | |
3321 | static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res) | |
3322 | { | |
3323 | struct xdr_stream xdr; | |
3324 | struct compound_hdr hdr; | |
3325 | int status; | |
3326 | ||
3327 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3328 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3329 | goto out; | |
3330 | if ((status = decode_putfh(&xdr)) != 0) | |
3331 | goto out; | |
3332 | if ((status = decode_savefh(&xdr)) != 0) | |
3333 | goto out; | |
3334 | if ((status = decode_putfh(&xdr)) != 0) | |
3335 | goto out; | |
3336 | status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo); | |
3337 | out: | |
3338 | return status; | |
3339 | } | |
3340 | ||
3341 | /* | |
3342 | * Decode LINK response | |
3343 | */ | |
3344 | static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3345 | { | |
3346 | struct xdr_stream xdr; | |
3347 | struct compound_hdr hdr; | |
3348 | int status; | |
3349 | ||
3350 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3351 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3352 | goto out; | |
3353 | if ((status = decode_putfh(&xdr)) != 0) | |
3354 | goto out; | |
3355 | if ((status = decode_savefh(&xdr)) != 0) | |
3356 | goto out; | |
3357 | if ((status = decode_putfh(&xdr)) != 0) | |
3358 | goto out; | |
3359 | status = decode_link(&xdr, cinfo); | |
3360 | out: | |
3361 | return status; | |
3362 | } | |
3363 | ||
3364 | /* | |
3365 | * Decode CREATE response | |
3366 | */ | |
3367 | static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3368 | { | |
3369 | struct xdr_stream xdr; | |
3370 | struct compound_hdr hdr; | |
3371 | int status; | |
3372 | ||
3373 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3374 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3375 | goto out; | |
3376 | if ((status = decode_putfh(&xdr)) != 0) | |
3377 | goto out; | |
3378 | if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) | |
3379 | goto out; | |
3380 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3381 | goto out; | |
3382 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3383 | if (status == NFS4ERR_DELAY) | |
3384 | status = 0; | |
3385 | out: | |
3386 | return status; | |
3387 | } | |
3388 | ||
3389 | /* | |
3390 | * Decode SYMLINK response | |
3391 | */ | |
3392 | static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3393 | { | |
3394 | return nfs4_xdr_dec_create(rqstp, p, res); | |
3395 | } | |
3396 | ||
3397 | /* | |
3398 | * Decode GETATTR response | |
3399 | */ | |
3400 | static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res) | |
3401 | { | |
3402 | struct xdr_stream xdr; | |
3403 | struct compound_hdr hdr; | |
3404 | int status; | |
3405 | ||
3406 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3407 | status = decode_compound_hdr(&xdr, &hdr); | |
3408 | if (status) | |
3409 | goto out; | |
3410 | status = decode_putfh(&xdr); | |
3411 | if (status) | |
3412 | goto out; | |
3413 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3414 | out: | |
3415 | return status; | |
3416 | ||
3417 | } | |
3418 | ||
3419 | ||
3420 | /* | |
3421 | * Decode CLOSE response | |
3422 | */ | |
3423 | static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3424 | { | |
3425 | struct xdr_stream xdr; | |
3426 | struct compound_hdr hdr; | |
3427 | int status; | |
3428 | ||
3429 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3430 | status = decode_compound_hdr(&xdr, &hdr); | |
3431 | if (status) | |
3432 | goto out; | |
3433 | status = decode_putfh(&xdr); | |
3434 | if (status) | |
3435 | goto out; | |
3436 | status = decode_close(&xdr, res); | |
3437 | out: | |
3438 | return status; | |
3439 | } | |
3440 | ||
3441 | /* | |
3442 | * Decode OPEN response | |
3443 | */ | |
3444 | static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3445 | { | |
3446 | struct xdr_stream xdr; | |
3447 | struct compound_hdr hdr; | |
3448 | int status; | |
3449 | ||
3450 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3451 | status = decode_compound_hdr(&xdr, &hdr); | |
3452 | if (status) | |
3453 | goto out; | |
3454 | status = decode_putfh(&xdr); | |
3455 | if (status) | |
3456 | goto out; | |
3457 | status = decode_open(&xdr, res); | |
3458 | if (status) | |
3459 | goto out; | |
3460 | status = decode_getfh(&xdr, &res->fh); | |
3461 | if (status) | |
3462 | goto out; | |
3463 | status = decode_getfattr(&xdr, res->f_attr, res->server); | |
3464 | if (status == NFS4ERR_DELAY) | |
3465 | status = 0; | |
3466 | out: | |
3467 | return status; | |
3468 | } | |
3469 | ||
3470 | /* | |
3471 | * Decode OPEN_CONFIRM response | |
3472 | */ | |
3473 | static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res) | |
3474 | { | |
3475 | struct xdr_stream xdr; | |
3476 | struct compound_hdr hdr; | |
3477 | int status; | |
3478 | ||
3479 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3480 | status = decode_compound_hdr(&xdr, &hdr); | |
3481 | if (status) | |
3482 | goto out; | |
3483 | status = decode_putfh(&xdr); | |
3484 | if (status) | |
3485 | goto out; | |
3486 | status = decode_open_confirm(&xdr, res); | |
3487 | out: | |
3488 | return status; | |
3489 | } | |
3490 | ||
3491 | /* | |
3492 | * Decode OPEN response | |
3493 | */ | |
3494 | static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3495 | { | |
3496 | struct xdr_stream xdr; | |
3497 | struct compound_hdr hdr; | |
3498 | int status; | |
3499 | ||
3500 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3501 | status = decode_compound_hdr(&xdr, &hdr); | |
3502 | if (status) | |
3503 | goto out; | |
3504 | status = decode_putfh(&xdr); | |
3505 | if (status) | |
3506 | goto out; | |
3507 | status = decode_open(&xdr, res); | |
3508 | out: | |
3509 | return status; | |
3510 | } | |
3511 | ||
3512 | /* | |
3513 | * Decode SETATTR response | |
3514 | */ | |
3515 | static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res) | |
3516 | { | |
3517 | struct xdr_stream xdr; | |
3518 | struct compound_hdr hdr; | |
3519 | int status; | |
3520 | ||
3521 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3522 | status = decode_compound_hdr(&xdr, &hdr); | |
3523 | if (status) | |
3524 | goto out; | |
3525 | status = decode_putfh(&xdr); | |
3526 | if (status) | |
3527 | goto out; | |
3528 | status = decode_setattr(&xdr, res); | |
3529 | if (status) | |
3530 | goto out; | |
3531 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3532 | if (status == NFS4ERR_DELAY) | |
3533 | status = 0; | |
3534 | out: | |
3535 | return status; | |
3536 | } | |
3537 | ||
3538 | /* | |
3539 | * Decode LOCK response | |
3540 | */ | |
3541 | static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *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 | status = decode_compound_hdr(&xdr, &hdr); | |
3549 | if (status) | |
3550 | goto out; | |
3551 | status = decode_putfh(&xdr); | |
3552 | if (status) | |
3553 | goto out; | |
3554 | status = decode_lock(&xdr, res); | |
3555 | out: | |
3556 | return status; | |
3557 | } | |
3558 | ||
3559 | /* | |
3560 | * Decode LOCKT response | |
3561 | */ | |
3562 | static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *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 | status = decode_compound_hdr(&xdr, &hdr); | |
3570 | if (status) | |
3571 | goto out; | |
3572 | status = decode_putfh(&xdr); | |
3573 | if (status) | |
3574 | goto out; | |
3575 | status = decode_lockt(&xdr, res); | |
3576 | out: | |
3577 | return status; | |
3578 | } | |
3579 | ||
3580 | /* | |
3581 | * Decode LOCKU response | |
3582 | */ | |
3583 | static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3584 | { | |
3585 | struct xdr_stream xdr; | |
3586 | struct compound_hdr hdr; | |
3587 | int status; | |
3588 | ||
3589 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3590 | status = decode_compound_hdr(&xdr, &hdr); | |
3591 | if (status) | |
3592 | goto out; | |
3593 | status = decode_putfh(&xdr); | |
3594 | if (status) | |
3595 | goto out; | |
3596 | status = decode_locku(&xdr, res); | |
3597 | out: | |
3598 | return status; | |
3599 | } | |
3600 | ||
3601 | /* | |
3602 | * Decode READLINK response | |
3603 | */ | |
3604 | static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res) | |
3605 | { | |
3606 | struct xdr_stream xdr; | |
3607 | struct compound_hdr hdr; | |
3608 | int status; | |
3609 | ||
3610 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3611 | status = decode_compound_hdr(&xdr, &hdr); | |
3612 | if (status) | |
3613 | goto out; | |
3614 | status = decode_putfh(&xdr); | |
3615 | if (status) | |
3616 | goto out; | |
3617 | status = decode_readlink(&xdr, rqstp); | |
3618 | out: | |
3619 | return status; | |
3620 | } | |
3621 | ||
3622 | /* | |
3623 | * Decode READDIR response | |
3624 | */ | |
3625 | static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_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 | status = decode_compound_hdr(&xdr, &hdr); | |
3633 | if (status) | |
3634 | goto out; | |
3635 | status = decode_putfh(&xdr); | |
3636 | if (status) | |
3637 | goto out; | |
3638 | status = decode_readdir(&xdr, rqstp, res); | |
3639 | out: | |
3640 | return status; | |
3641 | } | |
3642 | ||
3643 | /* | |
3644 | * Decode Read response | |
3645 | */ | |
3646 | static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res) | |
3647 | { | |
3648 | struct xdr_stream xdr; | |
3649 | struct compound_hdr hdr; | |
3650 | int status; | |
3651 | ||
3652 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3653 | status = decode_compound_hdr(&xdr, &hdr); | |
3654 | if (status) | |
3655 | goto out; | |
3656 | status = decode_putfh(&xdr); | |
3657 | if (status) | |
3658 | goto out; | |
3659 | status = decode_read(&xdr, rqstp, res); | |
3660 | if (!status) | |
3661 | status = res->count; | |
3662 | out: | |
3663 | return status; | |
3664 | } | |
3665 | ||
3666 | /* | |
3667 | * Decode WRITE response | |
3668 | */ | |
3669 | static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3670 | { | |
3671 | struct xdr_stream xdr; | |
3672 | struct compound_hdr hdr; | |
3673 | int status; | |
3674 | ||
3675 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3676 | status = decode_compound_hdr(&xdr, &hdr); | |
3677 | if (status) | |
3678 | goto out; | |
3679 | status = decode_putfh(&xdr); | |
3680 | if (status) | |
3681 | goto out; | |
3682 | status = decode_write(&xdr, res); | |
3683 | if (!status) | |
3684 | status = res->count; | |
3685 | out: | |
3686 | return status; | |
3687 | } | |
3688 | ||
3689 | /* | |
3690 | * Decode COMMIT response | |
3691 | */ | |
3692 | static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3693 | { | |
3694 | struct xdr_stream xdr; | |
3695 | struct compound_hdr hdr; | |
3696 | int status; | |
3697 | ||
3698 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3699 | status = decode_compound_hdr(&xdr, &hdr); | |
3700 | if (status) | |
3701 | goto out; | |
3702 | status = decode_putfh(&xdr); | |
3703 | if (status) | |
3704 | goto out; | |
3705 | status = decode_commit(&xdr, res); | |
3706 | out: | |
3707 | return status; | |
3708 | } | |
3709 | ||
3710 | /* | |
3711 | * FSINFO request | |
3712 | */ | |
3713 | static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3714 | { | |
3715 | struct xdr_stream xdr; | |
3716 | struct compound_hdr hdr; | |
3717 | int status; | |
3718 | ||
3719 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3720 | status = decode_compound_hdr(&xdr, &hdr); | |
3721 | if (!status) | |
3722 | status = decode_putfh(&xdr); | |
3723 | if (!status) | |
3724 | status = decode_fsinfo(&xdr, fsinfo); | |
3725 | if (!status) | |
3726 | status = -nfs_stat_to_errno(hdr.status); | |
3727 | return status; | |
3728 | } | |
3729 | ||
3730 | /* | |
3731 | * PATHCONF request | |
3732 | */ | |
3733 | static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf) | |
3734 | { | |
3735 | struct xdr_stream xdr; | |
3736 | struct compound_hdr hdr; | |
3737 | int status; | |
3738 | ||
3739 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3740 | status = decode_compound_hdr(&xdr, &hdr); | |
3741 | if (!status) | |
3742 | status = decode_putfh(&xdr); | |
3743 | if (!status) | |
3744 | status = decode_pathconf(&xdr, pathconf); | |
3745 | return status; | |
3746 | } | |
3747 | ||
3748 | /* | |
3749 | * STATFS request | |
3750 | */ | |
3751 | static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat) | |
3752 | { | |
3753 | struct xdr_stream xdr; | |
3754 | struct compound_hdr hdr; | |
3755 | int status; | |
3756 | ||
3757 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3758 | status = decode_compound_hdr(&xdr, &hdr); | |
3759 | if (!status) | |
3760 | status = decode_putfh(&xdr); | |
3761 | if (!status) | |
3762 | status = decode_statfs(&xdr, fsstat); | |
3763 | return status; | |
3764 | } | |
3765 | ||
3766 | /* | |
3767 | * GETATTR_BITMAP request | |
3768 | */ | |
3769 | static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res) | |
3770 | { | |
3771 | struct xdr_stream xdr; | |
3772 | struct compound_hdr hdr; | |
3773 | int status; | |
3774 | ||
3775 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3776 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3777 | goto out; | |
3778 | if ((status = decode_putfh(&xdr)) != 0) | |
3779 | goto out; | |
3780 | status = decode_server_caps(&xdr, res); | |
3781 | out: | |
3782 | return status; | |
3783 | } | |
3784 | ||
3785 | /* | |
3786 | * Decode RENEW response | |
3787 | */ | |
3788 | static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3789 | { | |
3790 | struct xdr_stream xdr; | |
3791 | struct compound_hdr hdr; | |
3792 | int status; | |
3793 | ||
3794 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3795 | status = decode_compound_hdr(&xdr, &hdr); | |
3796 | if (!status) | |
3797 | status = decode_renew(&xdr); | |
3798 | return status; | |
3799 | } | |
3800 | ||
3801 | /* | |
3802 | * a SETCLIENTID request | |
3803 | */ | |
3804 | static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p, | |
3805 | struct nfs4_client *clp) | |
3806 | { | |
3807 | struct xdr_stream xdr; | |
3808 | struct compound_hdr hdr; | |
3809 | int status; | |
3810 | ||
3811 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3812 | status = decode_compound_hdr(&xdr, &hdr); | |
3813 | if (!status) | |
3814 | status = decode_setclientid(&xdr, clp); | |
3815 | if (!status) | |
3816 | status = -nfs_stat_to_errno(hdr.status); | |
3817 | return status; | |
3818 | } | |
3819 | ||
3820 | /* | |
3821 | * a SETCLIENTID_CONFIRM request | |
3822 | */ | |
3823 | static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3824 | { | |
3825 | struct xdr_stream xdr; | |
3826 | struct compound_hdr hdr; | |
3827 | int status; | |
3828 | ||
3829 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3830 | status = decode_compound_hdr(&xdr, &hdr); | |
3831 | if (!status) | |
3832 | status = decode_setclientid_confirm(&xdr); | |
3833 | if (!status) | |
3834 | status = decode_putrootfh(&xdr); | |
3835 | if (!status) | |
3836 | status = decode_fsinfo(&xdr, fsinfo); | |
3837 | if (!status) | |
3838 | status = -nfs_stat_to_errno(hdr.status); | |
3839 | return status; | |
3840 | } | |
3841 | ||
3842 | /* | |
3843 | * DELEGRETURN request | |
3844 | */ | |
3845 | static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3846 | { | |
3847 | struct xdr_stream xdr; | |
3848 | struct compound_hdr hdr; | |
3849 | int status; | |
3850 | ||
3851 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3852 | status = decode_compound_hdr(&xdr, &hdr); | |
3853 | if (status == 0) { | |
3854 | status = decode_putfh(&xdr); | |
3855 | if (status == 0) | |
3856 | status = decode_delegreturn(&xdr); | |
3857 | } | |
3858 | return status; | |
3859 | } | |
3860 | ||
3861 | uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus) | |
3862 | { | |
3863 | uint32_t bitmap[2] = {0}; | |
3864 | uint32_t len; | |
3865 | ||
3866 | if (!*p++) { | |
3867 | if (!*p) | |
3868 | return ERR_PTR(-EAGAIN); | |
3869 | entry->eof = 1; | |
3870 | return ERR_PTR(-EBADCOOKIE); | |
3871 | } | |
3872 | ||
3873 | entry->prev_cookie = entry->cookie; | |
3874 | p = xdr_decode_hyper(p, &entry->cookie); | |
3875 | entry->len = ntohl(*p++); | |
3876 | entry->name = (const char *) p; | |
3877 | p += XDR_QUADLEN(entry->len); | |
3878 | ||
3879 | /* | |
3880 | * In case the server doesn't return an inode number, | |
3881 | * we fake one here. (We don't use inode number 0, | |
3882 | * since glibc seems to choke on it...) | |
3883 | */ | |
3884 | entry->ino = 1; | |
3885 | ||
3886 | len = ntohl(*p++); /* bitmap length */ | |
3887 | if (len-- > 0) { | |
3888 | bitmap[0] = ntohl(*p++); | |
3889 | if (len-- > 0) { | |
3890 | bitmap[1] = ntohl(*p++); | |
3891 | p += len; | |
3892 | } | |
3893 | } | |
3894 | len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */ | |
3895 | if (len > 0) { | |
3896 | if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID) | |
3897 | xdr_decode_hyper(p, &entry->ino); | |
3898 | else if (bitmap[0] == FATTR4_WORD0_FILEID) | |
3899 | xdr_decode_hyper(p, &entry->ino); | |
3900 | p += len; | |
3901 | } | |
3902 | ||
3903 | entry->eof = !p[0] && p[1]; | |
3904 | return p; | |
3905 | } | |
3906 | ||
3907 | /* | |
3908 | * We need to translate between nfs status return values and | |
3909 | * the local errno values which may not be the same. | |
3910 | */ | |
3911 | static struct { | |
3912 | int stat; | |
3913 | int errno; | |
3914 | } nfs_errtbl[] = { | |
3915 | { NFS4_OK, 0 }, | |
3916 | { NFS4ERR_PERM, EPERM }, | |
3917 | { NFS4ERR_NOENT, ENOENT }, | |
3918 | { NFS4ERR_IO, errno_NFSERR_IO }, | |
3919 | { NFS4ERR_NXIO, ENXIO }, | |
3920 | { NFS4ERR_ACCESS, EACCES }, | |
3921 | { NFS4ERR_EXIST, EEXIST }, | |
3922 | { NFS4ERR_XDEV, EXDEV }, | |
3923 | { NFS4ERR_NOTDIR, ENOTDIR }, | |
3924 | { NFS4ERR_ISDIR, EISDIR }, | |
3925 | { NFS4ERR_INVAL, EINVAL }, | |
3926 | { NFS4ERR_FBIG, EFBIG }, | |
3927 | { NFS4ERR_NOSPC, ENOSPC }, | |
3928 | { NFS4ERR_ROFS, EROFS }, | |
3929 | { NFS4ERR_MLINK, EMLINK }, | |
3930 | { NFS4ERR_NAMETOOLONG, ENAMETOOLONG }, | |
3931 | { NFS4ERR_NOTEMPTY, ENOTEMPTY }, | |
3932 | { NFS4ERR_DQUOT, EDQUOT }, | |
3933 | { NFS4ERR_STALE, ESTALE }, | |
3934 | { NFS4ERR_BADHANDLE, EBADHANDLE }, | |
3935 | { NFS4ERR_BAD_COOKIE, EBADCOOKIE }, | |
3936 | { NFS4ERR_NOTSUPP, ENOTSUPP }, | |
3937 | { NFS4ERR_TOOSMALL, ETOOSMALL }, | |
3938 | { NFS4ERR_SERVERFAULT, ESERVERFAULT }, | |
3939 | { NFS4ERR_BADTYPE, EBADTYPE }, | |
3940 | { NFS4ERR_LOCKED, EAGAIN }, | |
3941 | { NFS4ERR_RESOURCE, EREMOTEIO }, | |
3942 | { NFS4ERR_SYMLINK, ELOOP }, | |
3943 | { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP }, | |
3944 | { NFS4ERR_DEADLOCK, EDEADLK }, | |
3945 | { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs | |
3946 | * to be handled by a | |
3947 | * middle-layer. | |
3948 | */ | |
3949 | { -1, EIO } | |
3950 | }; | |
3951 | ||
3952 | /* | |
3953 | * Convert an NFS error code to a local one. | |
3954 | * This one is used jointly by NFSv2 and NFSv3. | |
3955 | */ | |
3956 | static int | |
3957 | nfs_stat_to_errno(int stat) | |
3958 | { | |
3959 | int i; | |
3960 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { | |
3961 | if (nfs_errtbl[i].stat == stat) | |
3962 | return nfs_errtbl[i].errno; | |
3963 | } | |
3964 | if (stat <= 10000 || stat > 10100) { | |
3965 | /* The server is looney tunes. */ | |
3966 | return ESERVERFAULT; | |
3967 | } | |
3968 | /* If we cannot translate the error, the recovery routines should | |
3969 | * handle it. | |
3970 | * Note: remaining NFSv4 error codes have values > 10000, so should | |
3971 | * not conflict with native Linux error codes. | |
3972 | */ | |
3973 | return stat; | |
3974 | } | |
3975 | ||
3976 | #ifndef MAX | |
3977 | # define MAX(a, b) (((a) > (b))? (a) : (b)) | |
3978 | #endif | |
3979 | ||
3980 | #define PROC(proc, argtype, restype) \ | |
3981 | [NFSPROC4_CLNT_##proc] = { \ | |
3982 | .p_proc = NFSPROC4_COMPOUND, \ | |
3983 | .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ | |
3984 | .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ | |
3985 | .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \ | |
3986 | } | |
3987 | ||
3988 | struct rpc_procinfo nfs4_procedures[] = { | |
3989 | PROC(READ, enc_read, dec_read), | |
3990 | PROC(WRITE, enc_write, dec_write), | |
3991 | PROC(COMMIT, enc_commit, dec_commit), | |
3992 | PROC(OPEN, enc_open, dec_open), | |
3993 | PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), | |
3994 | PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), | |
3995 | PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), | |
3996 | PROC(CLOSE, enc_close, dec_close), | |
3997 | PROC(SETATTR, enc_setattr, dec_setattr), | |
3998 | PROC(FSINFO, enc_fsinfo, dec_fsinfo), | |
3999 | PROC(RENEW, enc_renew, dec_renew), | |
4000 | PROC(SETCLIENTID, enc_setclientid, dec_setclientid), | |
4001 | PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), | |
4002 | PROC(LOCK, enc_lock, dec_lock), | |
4003 | PROC(LOCKT, enc_lockt, dec_lockt), | |
4004 | PROC(LOCKU, enc_locku, dec_locku), | |
4005 | PROC(ACCESS, enc_access, dec_access), | |
4006 | PROC(GETATTR, enc_getattr, dec_getattr), | |
4007 | PROC(LOOKUP, enc_lookup, dec_lookup), | |
4008 | PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), | |
4009 | PROC(REMOVE, enc_remove, dec_remove), | |
4010 | PROC(RENAME, enc_rename, dec_rename), | |
4011 | PROC(LINK, enc_link, dec_link), | |
4012 | PROC(SYMLINK, enc_symlink, dec_symlink), | |
4013 | PROC(CREATE, enc_create, dec_create), | |
4014 | PROC(PATHCONF, enc_pathconf, dec_pathconf), | |
4015 | PROC(STATFS, enc_statfs, dec_statfs), | |
4016 | PROC(READLINK, enc_readlink, dec_readlink), | |
4017 | PROC(READDIR, enc_readdir, dec_readdir), | |
4018 | PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), | |
4019 | PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), | |
4020 | }; | |
4021 | ||
4022 | struct rpc_version nfs_version4 = { | |
4023 | .number = 4, | |
4024 | .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]), | |
4025 | .procs = nfs4_procedures | |
4026 | }; | |
4027 | ||
4028 | /* | |
4029 | * Local variables: | |
4030 | * c-basic-offset: 8 | |
4031 | * End: | |
4032 | */ |