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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)) | |
86 | #define encode_getattr_maxsz (op_encode_hdr_maxsz + 3) | |
87 | #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) | |
88 | #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) | |
89 | #define nfs4_fattr_bitmap_maxsz (36 + 2 * nfs4_name_maxsz) | |
90 | #define decode_getattr_maxsz (op_decode_hdr_maxsz + 3 + \ | |
91 | nfs4_fattr_bitmap_maxsz) | |
92 | #define encode_savefh_maxsz (op_encode_hdr_maxsz) | |
93 | #define decode_savefh_maxsz (op_decode_hdr_maxsz) | |
94 | #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2) | |
95 | #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11) | |
96 | #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) | |
97 | #define decode_renew_maxsz (op_decode_hdr_maxsz) | |
98 | #define encode_setclientid_maxsz \ | |
99 | (op_encode_hdr_maxsz + \ | |
100 | 4 /*server->ip_addr*/ + \ | |
101 | 1 /*Netid*/ + \ | |
102 | 6 /*uaddr*/ + \ | |
103 | 6 + (NFS4_VERIFIER_SIZE >> 2)) | |
104 | #define decode_setclientid_maxsz \ | |
105 | (op_decode_hdr_maxsz + \ | |
106 | 2 + \ | |
107 | 1024) /* large value for CLID_INUSE */ | |
108 | #define encode_setclientid_confirm_maxsz \ | |
109 | (op_encode_hdr_maxsz + \ | |
110 | 3 + (NFS4_VERIFIER_SIZE >> 2)) | |
111 | #define decode_setclientid_confirm_maxsz \ | |
112 | (op_decode_hdr_maxsz) | |
113 | #define encode_lookup_maxsz (op_encode_hdr_maxsz + \ | |
114 | 1 + ((3 + NFS4_FHSIZE) >> 2)) | |
115 | #define encode_remove_maxsz (op_encode_hdr_maxsz + \ | |
116 | nfs4_name_maxsz) | |
117 | #define encode_rename_maxsz (op_encode_hdr_maxsz + \ | |
118 | 2 * nfs4_name_maxsz) | |
119 | #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5) | |
120 | #define encode_link_maxsz (op_encode_hdr_maxsz + \ | |
121 | nfs4_name_maxsz) | |
122 | #define decode_link_maxsz (op_decode_hdr_maxsz + 5) | |
123 | #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ | |
124 | 1 + nfs4_name_maxsz + \ | |
125 | nfs4_path_maxsz + \ | |
126 | nfs4_fattr_bitmap_maxsz) | |
127 | #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) | |
128 | #define encode_create_maxsz (op_encode_hdr_maxsz + \ | |
129 | 2 + nfs4_name_maxsz + \ | |
130 | nfs4_fattr_bitmap_maxsz) | |
131 | #define decode_create_maxsz (op_decode_hdr_maxsz + 8) | |
132 | #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) | |
133 | #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) | |
134 | #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ | |
135 | #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ | |
136 | #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ | |
137 | encode_putfh_maxsz + \ | |
138 | op_encode_hdr_maxsz + 7) | |
139 | #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ | |
140 | decode_putfh_maxsz + \ | |
141 | op_decode_hdr_maxsz + 2) | |
142 | #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ | |
143 | encode_putfh_maxsz + \ | |
144 | op_encode_hdr_maxsz) | |
145 | #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ | |
146 | decode_putfh_maxsz + \ | |
147 | op_decode_hdr_maxsz) | |
148 | #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ | |
149 | encode_putfh_maxsz + \ | |
150 | op_encode_hdr_maxsz + 9) | |
151 | #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ | |
152 | decode_putfh_maxsz + \ | |
153 | op_decode_hdr_maxsz + 2) | |
154 | #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ | |
155 | encode_putfh_maxsz + \ | |
156 | op_encode_hdr_maxsz + 8) | |
157 | #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ | |
158 | decode_putfh_maxsz + \ | |
159 | op_decode_hdr_maxsz + 4) | |
160 | #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ | |
161 | encode_putfh_maxsz + \ | |
162 | op_encode_hdr_maxsz + 3) | |
163 | #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ | |
164 | decode_putfh_maxsz + \ | |
165 | op_decode_hdr_maxsz + 2) | |
166 | #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ | |
167 | encode_putfh_maxsz + \ | |
168 | op_encode_hdr_maxsz + \ | |
169 | 13 + 3 + 2 + 64 + \ | |
170 | encode_getattr_maxsz + \ | |
171 | encode_getfh_maxsz) | |
172 | #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ | |
173 | decode_putfh_maxsz + \ | |
174 | op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \ | |
175 | decode_getattr_maxsz + \ | |
176 | decode_getfh_maxsz) | |
177 | #define NFS4_enc_open_confirm_sz \ | |
178 | (compound_encode_hdr_maxsz + \ | |
179 | encode_putfh_maxsz + \ | |
180 | op_encode_hdr_maxsz + 5) | |
181 | #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \ | |
182 | decode_putfh_maxsz + \ | |
183 | op_decode_hdr_maxsz + 4) | |
184 | #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ | |
185 | encode_putfh_maxsz + \ | |
186 | op_encode_hdr_maxsz + \ | |
187 | 11) | |
188 | #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ | |
189 | decode_putfh_maxsz + \ | |
190 | op_decode_hdr_maxsz + \ | |
191 | 4 + 5 + 2 + 3) | |
192 | #define NFS4_enc_open_downgrade_sz \ | |
193 | (compound_encode_hdr_maxsz + \ | |
194 | encode_putfh_maxsz + \ | |
195 | op_encode_hdr_maxsz + 7) | |
196 | #define NFS4_dec_open_downgrade_sz \ | |
197 | (compound_decode_hdr_maxsz + \ | |
198 | decode_putfh_maxsz + \ | |
199 | op_decode_hdr_maxsz + 4) | |
200 | #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ | |
201 | encode_putfh_maxsz + \ | |
202 | op_encode_hdr_maxsz + 5) | |
203 | #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ | |
204 | decode_putfh_maxsz + \ | |
205 | op_decode_hdr_maxsz + 4) | |
206 | #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ | |
207 | encode_putfh_maxsz + \ | |
208 | op_encode_hdr_maxsz + 4 + \ | |
209 | nfs4_fattr_bitmap_maxsz + \ | |
210 | encode_getattr_maxsz) | |
211 | #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ | |
212 | decode_putfh_maxsz + \ | |
213 | op_decode_hdr_maxsz + 3) | |
214 | #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ | |
215 | encode_putfh_maxsz + \ | |
216 | encode_fsinfo_maxsz) | |
217 | #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ | |
218 | decode_putfh_maxsz + \ | |
219 | decode_fsinfo_maxsz) | |
220 | #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ | |
221 | encode_renew_maxsz) | |
222 | #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ | |
223 | decode_renew_maxsz) | |
224 | #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ | |
225 | encode_setclientid_maxsz) | |
226 | #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ | |
227 | decode_setclientid_maxsz) | |
228 | #define NFS4_enc_setclientid_confirm_sz \ | |
229 | (compound_encode_hdr_maxsz + \ | |
230 | encode_setclientid_confirm_maxsz + \ | |
231 | encode_putrootfh_maxsz + \ | |
232 | encode_fsinfo_maxsz) | |
233 | #define NFS4_dec_setclientid_confirm_sz \ | |
234 | (compound_decode_hdr_maxsz + \ | |
235 | decode_setclientid_confirm_maxsz + \ | |
236 | decode_putrootfh_maxsz + \ | |
237 | decode_fsinfo_maxsz) | |
238 | #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ | |
239 | encode_putfh_maxsz + \ | |
240 | encode_getattr_maxsz + \ | |
241 | op_encode_hdr_maxsz + \ | |
242 | 1 + 1 + 2 + 2 + \ | |
243 | 1 + 4 + 1 + 2 + \ | |
244 | owner_id_maxsz) | |
245 | #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ | |
246 | decode_putfh_maxsz + \ | |
247 | decode_getattr_maxsz + \ | |
248 | op_decode_hdr_maxsz + \ | |
249 | 2 + 2 + 1 + 2 + \ | |
250 | owner_id_maxsz) | |
251 | #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ | |
252 | encode_putfh_maxsz + \ | |
253 | encode_getattr_maxsz + \ | |
254 | op_encode_hdr_maxsz + \ | |
255 | 1 + 2 + 2 + 2 + \ | |
256 | owner_id_maxsz) | |
257 | #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz) | |
258 | #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ | |
259 | encode_putfh_maxsz + \ | |
260 | encode_getattr_maxsz + \ | |
261 | op_encode_hdr_maxsz + \ | |
262 | 1 + 1 + 4 + 2 + 2) | |
263 | #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ | |
264 | decode_putfh_maxsz + \ | |
265 | decode_getattr_maxsz + \ | |
266 | op_decode_hdr_maxsz + 4) | |
267 | #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ | |
268 | encode_putfh_maxsz + \ | |
269 | op_encode_hdr_maxsz + 1) | |
270 | #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ | |
271 | decode_putfh_maxsz + \ | |
272 | op_decode_hdr_maxsz + 2) | |
273 | #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ | |
274 | encode_putfh_maxsz + \ | |
275 | encode_getattr_maxsz) | |
276 | #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ | |
277 | decode_putfh_maxsz + \ | |
278 | decode_getattr_maxsz) | |
279 | #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ | |
280 | encode_putfh_maxsz + \ | |
281 | encode_lookup_maxsz + \ | |
282 | encode_getattr_maxsz + \ | |
283 | encode_getfh_maxsz) | |
284 | #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ | |
285 | decode_putfh_maxsz + \ | |
286 | op_decode_hdr_maxsz + \ | |
287 | decode_getattr_maxsz + \ | |
288 | decode_getfh_maxsz) | |
289 | #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ | |
290 | encode_putrootfh_maxsz + \ | |
291 | encode_getattr_maxsz + \ | |
292 | encode_getfh_maxsz) | |
293 | #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ | |
294 | decode_putrootfh_maxsz + \ | |
295 | decode_getattr_maxsz + \ | |
296 | decode_getfh_maxsz) | |
297 | #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ | |
298 | encode_putfh_maxsz + \ | |
299 | encode_remove_maxsz) | |
300 | #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ | |
301 | decode_putfh_maxsz + \ | |
302 | op_decode_hdr_maxsz + 5) | |
303 | #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ | |
304 | encode_putfh_maxsz + \ | |
305 | encode_savefh_maxsz + \ | |
306 | encode_putfh_maxsz + \ | |
307 | encode_rename_maxsz) | |
308 | #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ | |
309 | decode_putfh_maxsz + \ | |
310 | decode_savefh_maxsz + \ | |
311 | decode_putfh_maxsz + \ | |
312 | decode_rename_maxsz) | |
313 | #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ | |
314 | encode_putfh_maxsz + \ | |
315 | encode_savefh_maxsz + \ | |
316 | encode_putfh_maxsz + \ | |
317 | encode_link_maxsz) | |
318 | #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ | |
319 | decode_putfh_maxsz + \ | |
320 | decode_savefh_maxsz + \ | |
321 | decode_putfh_maxsz + \ | |
322 | decode_link_maxsz) | |
323 | #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ | |
324 | encode_putfh_maxsz + \ | |
325 | encode_symlink_maxsz + \ | |
326 | encode_getattr_maxsz + \ | |
327 | encode_getfh_maxsz) | |
328 | #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ | |
329 | decode_putfh_maxsz + \ | |
330 | decode_symlink_maxsz + \ | |
331 | decode_getattr_maxsz + \ | |
332 | decode_getfh_maxsz) | |
333 | #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ | |
334 | encode_putfh_maxsz + \ | |
335 | encode_create_maxsz + \ | |
336 | encode_getattr_maxsz + \ | |
337 | encode_getfh_maxsz) | |
338 | #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ | |
339 | decode_putfh_maxsz + \ | |
340 | decode_create_maxsz + \ | |
341 | decode_getattr_maxsz + \ | |
342 | decode_getfh_maxsz) | |
343 | #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ | |
344 | encode_putfh_maxsz + \ | |
345 | encode_getattr_maxsz) | |
346 | #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ | |
347 | decode_putfh_maxsz + \ | |
348 | decode_getattr_maxsz) | |
349 | #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ | |
350 | encode_putfh_maxsz + \ | |
351 | encode_getattr_maxsz) | |
352 | #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ | |
353 | decode_putfh_maxsz + \ | |
354 | op_decode_hdr_maxsz + 12) | |
355 | #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ | |
356 | encode_getattr_maxsz) | |
357 | #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ | |
358 | decode_getattr_maxsz) | |
359 | #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ | |
360 | encode_putfh_maxsz + \ | |
361 | encode_delegreturn_maxsz) | |
362 | #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ | |
363 | decode_delegreturn_maxsz) | |
364 | ||
365 | static struct { | |
366 | unsigned int mode; | |
367 | unsigned int nfs2type; | |
368 | } nfs_type2fmt[] = { | |
369 | { 0, NFNON }, | |
370 | { S_IFREG, NFREG }, | |
371 | { S_IFDIR, NFDIR }, | |
372 | { S_IFBLK, NFBLK }, | |
373 | { S_IFCHR, NFCHR }, | |
374 | { S_IFLNK, NFLNK }, | |
375 | { S_IFSOCK, NFSOCK }, | |
376 | { S_IFIFO, NFFIFO }, | |
377 | { 0, NFNON }, | |
378 | { 0, NFNON }, | |
379 | }; | |
380 | ||
381 | struct compound_hdr { | |
382 | int32_t status; | |
383 | uint32_t nops; | |
384 | uint32_t taglen; | |
385 | char * tag; | |
386 | }; | |
387 | ||
388 | /* | |
389 | * START OF "GENERIC" ENCODE ROUTINES. | |
390 | * These may look a little ugly since they are imported from a "generic" | |
391 | * set of XDR encode/decode routines which are intended to be shared by | |
392 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
393 | * | |
394 | * If the pain of reading these is too great, it should be a straightforward | |
395 | * task to translate them into Linux-specific versions which are more | |
396 | * consistent with the style used in NFSv2/v3... | |
397 | */ | |
398 | #define WRITE32(n) *p++ = htonl(n) | |
399 | #define WRITE64(n) do { \ | |
400 | *p++ = htonl((uint32_t)((n) >> 32)); \ | |
401 | *p++ = htonl((uint32_t)(n)); \ | |
402 | } while (0) | |
403 | #define WRITEMEM(ptr,nbytes) do { \ | |
404 | p = xdr_encode_opaque_fixed(p, ptr, nbytes); \ | |
405 | } while (0) | |
406 | ||
407 | #define RESERVE_SPACE(nbytes) do { \ | |
408 | p = xdr_reserve_space(xdr, nbytes); \ | |
409 | if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \ | |
410 | BUG_ON(!p); \ | |
411 | } while (0) | |
412 | ||
413 | static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) | |
414 | { | |
415 | uint32_t *p; | |
416 | ||
417 | p = xdr_reserve_space(xdr, 4 + len); | |
418 | BUG_ON(p == NULL); | |
419 | xdr_encode_opaque(p, str, len); | |
420 | } | |
421 | ||
422 | static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
423 | { | |
424 | uint32_t *p; | |
425 | ||
426 | dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); | |
427 | BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); | |
428 | RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2)); | |
429 | WRITE32(hdr->taglen); | |
430 | WRITEMEM(hdr->tag, hdr->taglen); | |
431 | WRITE32(NFS4_MINOR_VERSION); | |
432 | WRITE32(hdr->nops); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) | |
437 | { | |
438 | uint32_t *p; | |
439 | ||
440 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); | |
441 | BUG_ON(p == NULL); | |
442 | xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); | |
443 | } | |
444 | ||
445 | static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) | |
446 | { | |
447 | char owner_name[IDMAP_NAMESZ]; | |
448 | char owner_group[IDMAP_NAMESZ]; | |
449 | int owner_namelen = 0; | |
450 | int owner_grouplen = 0; | |
451 | uint32_t *p; | |
452 | uint32_t *q; | |
453 | int len; | |
454 | uint32_t bmval0 = 0; | |
455 | uint32_t bmval1 = 0; | |
456 | int status; | |
457 | ||
458 | /* | |
459 | * We reserve enough space to write the entire attribute buffer at once. | |
460 | * In the worst-case, this would be | |
461 | * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) | |
462 | * = 36 bytes, plus any contribution from variable-length fields | |
463 | * such as owner/group/acl's. | |
464 | */ | |
465 | len = 16; | |
466 | ||
467 | /* Sigh */ | |
468 | if (iap->ia_valid & ATTR_SIZE) | |
469 | len += 8; | |
470 | if (iap->ia_valid & ATTR_MODE) | |
471 | len += 4; | |
472 | if (iap->ia_valid & ATTR_UID) { | |
473 | owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name); | |
474 | if (owner_namelen < 0) { | |
475 | printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n", | |
476 | iap->ia_uid); | |
477 | /* XXX */ | |
478 | strcpy(owner_name, "nobody"); | |
479 | owner_namelen = sizeof("nobody") - 1; | |
480 | /* goto out; */ | |
481 | } | |
482 | len += 4 + (XDR_QUADLEN(owner_namelen) << 2); | |
483 | } | |
484 | if (iap->ia_valid & ATTR_GID) { | |
485 | owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group); | |
486 | if (owner_grouplen < 0) { | |
487 | printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n", | |
488 | iap->ia_gid); | |
489 | strcpy(owner_group, "nobody"); | |
490 | owner_grouplen = sizeof("nobody") - 1; | |
491 | /* goto out; */ | |
492 | } | |
493 | len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); | |
494 | } | |
495 | if (iap->ia_valid & ATTR_ATIME_SET) | |
496 | len += 16; | |
497 | else if (iap->ia_valid & ATTR_ATIME) | |
498 | len += 4; | |
499 | if (iap->ia_valid & ATTR_MTIME_SET) | |
500 | len += 16; | |
501 | else if (iap->ia_valid & ATTR_MTIME) | |
502 | len += 4; | |
503 | RESERVE_SPACE(len); | |
504 | ||
505 | /* | |
506 | * We write the bitmap length now, but leave the bitmap and the attribute | |
507 | * buffer length to be backfilled at the end of this routine. | |
508 | */ | |
509 | WRITE32(2); | |
510 | q = p; | |
511 | p += 3; | |
512 | ||
513 | if (iap->ia_valid & ATTR_SIZE) { | |
514 | bmval0 |= FATTR4_WORD0_SIZE; | |
515 | WRITE64(iap->ia_size); | |
516 | } | |
517 | if (iap->ia_valid & ATTR_MODE) { | |
518 | bmval1 |= FATTR4_WORD1_MODE; | |
519 | WRITE32(iap->ia_mode); | |
520 | } | |
521 | if (iap->ia_valid & ATTR_UID) { | |
522 | bmval1 |= FATTR4_WORD1_OWNER; | |
523 | WRITE32(owner_namelen); | |
524 | WRITEMEM(owner_name, owner_namelen); | |
525 | } | |
526 | if (iap->ia_valid & ATTR_GID) { | |
527 | bmval1 |= FATTR4_WORD1_OWNER_GROUP; | |
528 | WRITE32(owner_grouplen); | |
529 | WRITEMEM(owner_group, owner_grouplen); | |
530 | } | |
531 | if (iap->ia_valid & ATTR_ATIME_SET) { | |
532 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
533 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
534 | WRITE32(0); | |
535 | WRITE32(iap->ia_mtime.tv_sec); | |
536 | WRITE32(iap->ia_mtime.tv_nsec); | |
537 | } | |
538 | else if (iap->ia_valid & ATTR_ATIME) { | |
539 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
540 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
541 | } | |
542 | if (iap->ia_valid & ATTR_MTIME_SET) { | |
543 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
544 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
545 | WRITE32(0); | |
546 | WRITE32(iap->ia_mtime.tv_sec); | |
547 | WRITE32(iap->ia_mtime.tv_nsec); | |
548 | } | |
549 | else if (iap->ia_valid & ATTR_MTIME) { | |
550 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
551 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
552 | } | |
553 | ||
554 | /* | |
555 | * Now we backfill the bitmap and the attribute buffer length. | |
556 | */ | |
557 | if (len != ((char *)p - (char *)q) + 4) { | |
558 | printk ("encode_attr: Attr length calculation error! %u != %Zu\n", | |
559 | len, ((char *)p - (char *)q) + 4); | |
560 | BUG(); | |
561 | } | |
562 | len = (char *)p - (char *)q - 12; | |
563 | *q++ = htonl(bmval0); | |
564 | *q++ = htonl(bmval1); | |
565 | *q++ = htonl(len); | |
566 | ||
567 | status = 0; | |
568 | /* out: */ | |
569 | return status; | |
570 | } | |
571 | ||
572 | static int encode_access(struct xdr_stream *xdr, u32 access) | |
573 | { | |
574 | uint32_t *p; | |
575 | ||
576 | RESERVE_SPACE(8); | |
577 | WRITE32(OP_ACCESS); | |
578 | WRITE32(access); | |
579 | ||
580 | return 0; | |
581 | } | |
582 | ||
583 | static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
584 | { | |
585 | uint32_t *p; | |
586 | ||
587 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
588 | WRITE32(OP_CLOSE); | |
589 | WRITE32(arg->seqid); | |
590 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
595 | static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
596 | { | |
597 | uint32_t *p; | |
598 | ||
599 | RESERVE_SPACE(16); | |
600 | WRITE32(OP_COMMIT); | |
601 | WRITE64(args->offset); | |
602 | WRITE32(args->count); | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create) | |
608 | { | |
609 | uint32_t *p; | |
610 | ||
611 | RESERVE_SPACE(8); | |
612 | WRITE32(OP_CREATE); | |
613 | WRITE32(create->ftype); | |
614 | ||
615 | switch (create->ftype) { | |
616 | case NF4LNK: | |
617 | RESERVE_SPACE(4 + create->u.symlink->len); | |
618 | WRITE32(create->u.symlink->len); | |
619 | WRITEMEM(create->u.symlink->name, create->u.symlink->len); | |
620 | break; | |
621 | ||
622 | case NF4BLK: case NF4CHR: | |
623 | RESERVE_SPACE(8); | |
624 | WRITE32(create->u.device.specdata1); | |
625 | WRITE32(create->u.device.specdata2); | |
626 | break; | |
627 | ||
628 | default: | |
629 | break; | |
630 | } | |
631 | ||
632 | RESERVE_SPACE(4 + create->name->len); | |
633 | WRITE32(create->name->len); | |
634 | WRITEMEM(create->name->name, create->name->len); | |
635 | ||
636 | return encode_attrs(xdr, create->attrs, create->server); | |
637 | } | |
638 | ||
639 | static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap) | |
640 | { | |
641 | uint32_t *p; | |
642 | ||
643 | RESERVE_SPACE(12); | |
644 | WRITE32(OP_GETATTR); | |
645 | WRITE32(1); | |
646 | WRITE32(bitmap); | |
647 | return 0; | |
648 | } | |
649 | ||
650 | static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1) | |
651 | { | |
652 | uint32_t *p; | |
653 | ||
654 | RESERVE_SPACE(16); | |
655 | WRITE32(OP_GETATTR); | |
656 | WRITE32(2); | |
657 | WRITE32(bm0); | |
658 | WRITE32(bm1); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask) | |
663 | { | |
1da177e4 LT |
664 | return encode_getattr_two(xdr, |
665 | bitmask[0] & nfs4_fattr_bitmap[0], | |
666 | bitmask[1] & nfs4_fattr_bitmap[1]); | |
667 | } | |
668 | ||
669 | static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask) | |
670 | { | |
1da177e4 LT |
671 | return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0], |
672 | bitmask[1] & nfs4_fsinfo_bitmap[1]); | |
673 | } | |
674 | ||
675 | static int encode_getfh(struct xdr_stream *xdr) | |
676 | { | |
677 | uint32_t *p; | |
678 | ||
679 | RESERVE_SPACE(4); | |
680 | WRITE32(OP_GETFH); | |
681 | ||
682 | return 0; | |
683 | } | |
684 | ||
685 | static int encode_link(struct xdr_stream *xdr, const struct qstr *name) | |
686 | { | |
687 | uint32_t *p; | |
688 | ||
689 | RESERVE_SPACE(8 + name->len); | |
690 | WRITE32(OP_LINK); | |
691 | WRITE32(name->len); | |
692 | WRITEMEM(name->name, name->len); | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
697 | /* | |
698 | * opcode,type,reclaim,offset,length,new_lock_owner = 32 | |
699 | * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 | |
700 | */ | |
701 | static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
702 | { | |
703 | uint32_t *p; | |
704 | struct nfs_lock_opargs *opargs = arg->u.lock; | |
705 | ||
706 | RESERVE_SPACE(32); | |
707 | WRITE32(OP_LOCK); | |
708 | WRITE32(arg->type); | |
709 | WRITE32(opargs->reclaim); | |
710 | WRITE64(arg->offset); | |
711 | WRITE64(arg->length); | |
712 | WRITE32(opargs->new_lock_owner); | |
713 | if (opargs->new_lock_owner){ | |
714 | struct nfs_open_to_lock *ol = opargs->u.open_lock; | |
715 | ||
716 | RESERVE_SPACE(40); | |
717 | WRITE32(ol->open_seqid); | |
718 | WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid)); | |
719 | WRITE32(ol->lock_seqid); | |
720 | WRITE64(ol->lock_owner.clientid); | |
721 | WRITE32(4); | |
722 | WRITE32(ol->lock_owner.id); | |
723 | } | |
724 | else { | |
725 | struct nfs_exist_lock *el = opargs->u.exist_lock; | |
726 | ||
727 | RESERVE_SPACE(20); | |
728 | WRITEMEM(&el->stateid, sizeof(el->stateid)); | |
729 | WRITE32(el->seqid); | |
730 | } | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
736 | { | |
737 | uint32_t *p; | |
738 | struct nfs_lowner *opargs = arg->u.lockt; | |
739 | ||
740 | RESERVE_SPACE(40); | |
741 | WRITE32(OP_LOCKT); | |
742 | WRITE32(arg->type); | |
743 | WRITE64(arg->offset); | |
744 | WRITE64(arg->length); | |
745 | WRITE64(opargs->clientid); | |
746 | WRITE32(4); | |
747 | WRITE32(opargs->id); | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
753 | { | |
754 | uint32_t *p; | |
755 | struct nfs_locku_opargs *opargs = arg->u.locku; | |
756 | ||
757 | RESERVE_SPACE(44); | |
758 | WRITE32(OP_LOCKU); | |
759 | WRITE32(arg->type); | |
760 | WRITE32(opargs->seqid); | |
761 | WRITEMEM(&opargs->stateid, sizeof(opargs->stateid)); | |
762 | WRITE64(arg->offset); | |
763 | WRITE64(arg->length); | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
768 | static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name) | |
769 | { | |
770 | int len = name->len; | |
771 | uint32_t *p; | |
772 | ||
773 | RESERVE_SPACE(8 + len); | |
774 | WRITE32(OP_LOOKUP); | |
775 | WRITE32(len); | |
776 | WRITEMEM(name->name, len); | |
777 | ||
778 | return 0; | |
779 | } | |
780 | ||
781 | static void encode_share_access(struct xdr_stream *xdr, int open_flags) | |
782 | { | |
783 | uint32_t *p; | |
784 | ||
785 | RESERVE_SPACE(8); | |
786 | switch (open_flags & (FMODE_READ|FMODE_WRITE)) { | |
787 | case FMODE_READ: | |
788 | WRITE32(NFS4_SHARE_ACCESS_READ); | |
789 | break; | |
790 | case FMODE_WRITE: | |
791 | WRITE32(NFS4_SHARE_ACCESS_WRITE); | |
792 | break; | |
793 | case FMODE_READ|FMODE_WRITE: | |
794 | WRITE32(NFS4_SHARE_ACCESS_BOTH); | |
795 | break; | |
796 | default: | |
797 | BUG(); | |
798 | } | |
799 | WRITE32(0); /* for linux, share_deny = 0 always */ | |
800 | } | |
801 | ||
802 | static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
803 | { | |
804 | uint32_t *p; | |
805 | /* | |
806 | * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, | |
807 | * owner 4 = 32 | |
808 | */ | |
809 | RESERVE_SPACE(8); | |
810 | WRITE32(OP_OPEN); | |
811 | WRITE32(arg->seqid); | |
812 | encode_share_access(xdr, arg->open_flags); | |
813 | RESERVE_SPACE(16); | |
814 | WRITE64(arg->clientid); | |
815 | WRITE32(4); | |
816 | WRITE32(arg->id); | |
817 | } | |
818 | ||
819 | static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
820 | { | |
821 | uint32_t *p; | |
822 | ||
823 | RESERVE_SPACE(4); | |
824 | switch(arg->open_flags & O_EXCL) { | |
825 | case 0: | |
826 | WRITE32(NFS4_CREATE_UNCHECKED); | |
827 | encode_attrs(xdr, arg->u.attrs, arg->server); | |
828 | break; | |
829 | default: | |
830 | WRITE32(NFS4_CREATE_EXCLUSIVE); | |
831 | encode_nfs4_verifier(xdr, &arg->u.verifier); | |
832 | } | |
833 | } | |
834 | ||
835 | static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
836 | { | |
837 | uint32_t *p; | |
838 | ||
839 | RESERVE_SPACE(4); | |
840 | switch (arg->open_flags & O_CREAT) { | |
841 | case 0: | |
842 | WRITE32(NFS4_OPEN_NOCREATE); | |
843 | break; | |
844 | default: | |
845 | BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); | |
846 | WRITE32(NFS4_OPEN_CREATE); | |
847 | encode_createmode(xdr, arg); | |
848 | } | |
849 | } | |
850 | ||
851 | static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type) | |
852 | { | |
853 | uint32_t *p; | |
854 | ||
855 | RESERVE_SPACE(4); | |
856 | switch (delegation_type) { | |
857 | case 0: | |
858 | WRITE32(NFS4_OPEN_DELEGATE_NONE); | |
859 | break; | |
860 | case FMODE_READ: | |
861 | WRITE32(NFS4_OPEN_DELEGATE_READ); | |
862 | break; | |
863 | case FMODE_WRITE|FMODE_READ: | |
864 | WRITE32(NFS4_OPEN_DELEGATE_WRITE); | |
865 | break; | |
866 | default: | |
867 | BUG(); | |
868 | } | |
869 | } | |
870 | ||
871 | static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) | |
872 | { | |
873 | uint32_t *p; | |
874 | ||
875 | RESERVE_SPACE(4); | |
876 | WRITE32(NFS4_OPEN_CLAIM_NULL); | |
877 | encode_string(xdr, name->len, name->name); | |
878 | } | |
879 | ||
880 | static inline void encode_claim_previous(struct xdr_stream *xdr, int type) | |
881 | { | |
882 | uint32_t *p; | |
883 | ||
884 | RESERVE_SPACE(4); | |
885 | WRITE32(NFS4_OPEN_CLAIM_PREVIOUS); | |
886 | encode_delegation_type(xdr, type); | |
887 | } | |
888 | ||
889 | static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) | |
890 | { | |
891 | uint32_t *p; | |
892 | ||
893 | RESERVE_SPACE(4+sizeof(stateid->data)); | |
894 | WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR); | |
895 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
896 | encode_string(xdr, name->len, name->name); | |
897 | } | |
898 | ||
899 | static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
900 | { | |
901 | encode_openhdr(xdr, arg); | |
902 | encode_opentype(xdr, arg); | |
903 | switch (arg->claim) { | |
904 | case NFS4_OPEN_CLAIM_NULL: | |
905 | encode_claim_null(xdr, arg->name); | |
906 | break; | |
907 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
908 | encode_claim_previous(xdr, arg->u.delegation_type); | |
909 | break; | |
910 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
911 | encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); | |
912 | break; | |
913 | default: | |
914 | BUG(); | |
915 | } | |
916 | return 0; | |
917 | } | |
918 | ||
919 | static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg) | |
920 | { | |
921 | uint32_t *p; | |
922 | ||
923 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
924 | WRITE32(OP_OPEN_CONFIRM); | |
925 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
926 | WRITE32(arg->seqid); | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
931 | static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
932 | { | |
933 | uint32_t *p; | |
934 | ||
935 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
936 | WRITE32(OP_OPEN_DOWNGRADE); | |
937 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
938 | WRITE32(arg->seqid); | |
939 | encode_share_access(xdr, arg->open_flags); | |
940 | return 0; | |
941 | } | |
942 | ||
943 | static int | |
944 | encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh) | |
945 | { | |
946 | int len = fh->size; | |
947 | uint32_t *p; | |
948 | ||
949 | RESERVE_SPACE(8 + len); | |
950 | WRITE32(OP_PUTFH); | |
951 | WRITE32(len); | |
952 | WRITEMEM(fh->data, len); | |
953 | ||
954 | return 0; | |
955 | } | |
956 | ||
957 | static int encode_putrootfh(struct xdr_stream *xdr) | |
958 | { | |
959 | uint32_t *p; | |
960 | ||
961 | RESERVE_SPACE(4); | |
962 | WRITE32(OP_PUTROOTFH); | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
967 | static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx) | |
968 | { | |
1da177e4 LT |
969 | nfs4_stateid stateid; |
970 | uint32_t *p; | |
971 | ||
972 | RESERVE_SPACE(16); | |
973 | if (ctx->state != NULL) { | |
974 | nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner); | |
975 | WRITEMEM(stateid.data, sizeof(stateid.data)); | |
976 | } else | |
977 | WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data)); | |
978 | } | |
979 | ||
980 | static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args) | |
981 | { | |
982 | uint32_t *p; | |
983 | ||
984 | RESERVE_SPACE(4); | |
985 | WRITE32(OP_READ); | |
986 | ||
987 | encode_stateid(xdr, args->context); | |
988 | ||
989 | RESERVE_SPACE(12); | |
990 | WRITE64(args->offset); | |
991 | WRITE32(args->count); | |
992 | ||
993 | return 0; | |
994 | } | |
995 | ||
996 | static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req) | |
997 | { | |
998 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
999 | int replen; | |
1000 | uint32_t *p; | |
1001 | ||
1002 | RESERVE_SPACE(32+sizeof(nfs4_verifier)); | |
1003 | WRITE32(OP_READDIR); | |
1004 | WRITE64(readdir->cookie); | |
1005 | WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data)); | |
1006 | WRITE32(readdir->count >> 1); /* We're not doing readdirplus */ | |
1007 | WRITE32(readdir->count); | |
1008 | WRITE32(2); | |
1009 | if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1010 | WRITE32(0); | |
1011 | WRITE32(FATTR4_WORD1_MOUNTED_ON_FILEID); | |
1012 | } else { | |
1013 | WRITE32(FATTR4_WORD0_FILEID); | |
1014 | WRITE32(0); | |
1015 | } | |
1016 | ||
1017 | /* set up reply kvec | |
1018 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1019 | * + OP_READDIR + status + verifer(2) = 9 | |
1020 | */ | |
1021 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2; | |
1022 | xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages, | |
1023 | readdir->pgbase, readdir->count); | |
1024 | ||
1025 | return 0; | |
1026 | } | |
1027 | ||
1028 | static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req) | |
1029 | { | |
1030 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1031 | unsigned int replen; | |
1032 | uint32_t *p; | |
1033 | ||
1034 | RESERVE_SPACE(4); | |
1035 | WRITE32(OP_READLINK); | |
1036 | ||
1037 | /* set up reply kvec | |
1038 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1039 | * + OP_READLINK + status + string length = 8 | |
1040 | */ | |
1041 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2; | |
1042 | xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages, | |
1043 | readlink->pgbase, readlink->pglen); | |
1044 | ||
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | static int encode_remove(struct xdr_stream *xdr, const struct qstr *name) | |
1049 | { | |
1050 | uint32_t *p; | |
1051 | ||
1052 | RESERVE_SPACE(8 + name->len); | |
1053 | WRITE32(OP_REMOVE); | |
1054 | WRITE32(name->len); | |
1055 | WRITEMEM(name->name, name->len); | |
1056 | ||
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname) | |
1061 | { | |
1062 | uint32_t *p; | |
1063 | ||
1064 | RESERVE_SPACE(8 + oldname->len); | |
1065 | WRITE32(OP_RENAME); | |
1066 | WRITE32(oldname->len); | |
1067 | WRITEMEM(oldname->name, oldname->len); | |
1068 | ||
1069 | RESERVE_SPACE(4 + newname->len); | |
1070 | WRITE32(newname->len); | |
1071 | WRITEMEM(newname->name, newname->len); | |
1072 | ||
1073 | return 0; | |
1074 | } | |
1075 | ||
1076 | static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid) | |
1077 | { | |
1078 | uint32_t *p; | |
1079 | ||
1080 | RESERVE_SPACE(12); | |
1081 | WRITE32(OP_RENEW); | |
1082 | WRITE64(client_stateid->cl_clientid); | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int | |
1088 | encode_savefh(struct xdr_stream *xdr) | |
1089 | { | |
1090 | uint32_t *p; | |
1091 | ||
1092 | RESERVE_SPACE(4); | |
1093 | WRITE32(OP_SAVEFH); | |
1094 | ||
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server) | |
1099 | { | |
1100 | int status; | |
1101 | uint32_t *p; | |
1102 | ||
1103 | RESERVE_SPACE(4+sizeof(arg->stateid.data)); | |
1104 | WRITE32(OP_SETATTR); | |
1105 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
1106 | ||
1107 | if ((status = encode_attrs(xdr, arg->iap, server))) | |
1108 | return status; | |
1109 | ||
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid) | |
1114 | { | |
1115 | uint32_t *p; | |
1116 | ||
1117 | RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data)); | |
1118 | WRITE32(OP_SETCLIENTID); | |
1119 | WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data)); | |
1120 | ||
1121 | encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); | |
1122 | RESERVE_SPACE(4); | |
1123 | WRITE32(setclientid->sc_prog); | |
1124 | encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); | |
1125 | encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); | |
1126 | RESERVE_SPACE(4); | |
1127 | WRITE32(setclientid->sc_cb_ident); | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | ||
1132 | static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state) | |
1133 | { | |
1134 | uint32_t *p; | |
1135 | ||
1136 | RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data)); | |
1137 | WRITE32(OP_SETCLIENTID_CONFIRM); | |
1138 | WRITE64(client_state->cl_clientid); | |
1139 | WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data)); | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
1145 | { | |
1146 | uint32_t *p; | |
1147 | ||
1148 | RESERVE_SPACE(4); | |
1149 | WRITE32(OP_WRITE); | |
1150 | ||
1151 | encode_stateid(xdr, args->context); | |
1152 | ||
1153 | RESERVE_SPACE(16); | |
1154 | WRITE64(args->offset); | |
1155 | WRITE32(args->stable); | |
1156 | WRITE32(args->count); | |
1157 | ||
1158 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); | |
1159 | ||
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid) | |
1164 | { | |
1165 | uint32_t *p; | |
1166 | ||
1167 | RESERVE_SPACE(20); | |
1168 | ||
1169 | WRITE32(OP_DELEGRETURN); | |
1170 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
1171 | return 0; | |
1172 | ||
1173 | } | |
1174 | /* | |
1175 | * END OF "GENERIC" ENCODE ROUTINES. | |
1176 | */ | |
1177 | ||
1178 | /* | |
1179 | * Encode an ACCESS request | |
1180 | */ | |
1181 | static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args) | |
1182 | { | |
1183 | struct xdr_stream xdr; | |
1184 | struct compound_hdr hdr = { | |
1185 | .nops = 2, | |
1186 | }; | |
1187 | int status; | |
1188 | ||
1189 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1190 | encode_compound_hdr(&xdr, &hdr); | |
1191 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1192 | status = encode_access(&xdr, args->access); | |
1193 | return status; | |
1194 | } | |
1195 | ||
1196 | /* | |
1197 | * Encode LOOKUP request | |
1198 | */ | |
1199 | static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args) | |
1200 | { | |
1201 | struct xdr_stream xdr; | |
1202 | struct compound_hdr hdr = { | |
1203 | .nops = 4, | |
1204 | }; | |
1205 | int status; | |
1206 | ||
1207 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1208 | encode_compound_hdr(&xdr, &hdr); | |
1209 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1210 | goto out; | |
1211 | if ((status = encode_lookup(&xdr, args->name)) != 0) | |
1212 | goto out; | |
1213 | if ((status = encode_getfh(&xdr)) != 0) | |
1214 | goto out; | |
1215 | status = encode_getfattr(&xdr, args->bitmask); | |
1216 | out: | |
1217 | return status; | |
1218 | } | |
1219 | ||
1220 | /* | |
1221 | * Encode LOOKUP_ROOT request | |
1222 | */ | |
1223 | static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args) | |
1224 | { | |
1225 | struct xdr_stream xdr; | |
1226 | struct compound_hdr hdr = { | |
1227 | .nops = 3, | |
1228 | }; | |
1229 | int status; | |
1230 | ||
1231 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1232 | encode_compound_hdr(&xdr, &hdr); | |
1233 | if ((status = encode_putrootfh(&xdr)) != 0) | |
1234 | goto out; | |
1235 | if ((status = encode_getfh(&xdr)) == 0) | |
1236 | status = encode_getfattr(&xdr, args->bitmask); | |
1237 | out: | |
1238 | return status; | |
1239 | } | |
1240 | ||
1241 | /* | |
1242 | * Encode REMOVE request | |
1243 | */ | |
1244 | static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args) | |
1245 | { | |
1246 | struct xdr_stream xdr; | |
1247 | struct compound_hdr hdr = { | |
1248 | .nops = 2, | |
1249 | }; | |
1250 | int status; | |
1251 | ||
1252 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1253 | encode_compound_hdr(&xdr, &hdr); | |
1254 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1255 | status = encode_remove(&xdr, args->name); | |
1256 | return status; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * Encode RENAME request | |
1261 | */ | |
1262 | static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args) | |
1263 | { | |
1264 | struct xdr_stream xdr; | |
1265 | struct compound_hdr hdr = { | |
1266 | .nops = 4, | |
1267 | }; | |
1268 | int status; | |
1269 | ||
1270 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1271 | encode_compound_hdr(&xdr, &hdr); | |
1272 | if ((status = encode_putfh(&xdr, args->old_dir)) != 0) | |
1273 | goto out; | |
1274 | if ((status = encode_savefh(&xdr)) != 0) | |
1275 | goto out; | |
1276 | if ((status = encode_putfh(&xdr, args->new_dir)) != 0) | |
1277 | goto out; | |
1278 | status = encode_rename(&xdr, args->old_name, args->new_name); | |
1279 | out: | |
1280 | return status; | |
1281 | } | |
1282 | ||
1283 | /* | |
1284 | * Encode LINK request | |
1285 | */ | |
1286 | static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args) | |
1287 | { | |
1288 | struct xdr_stream xdr; | |
1289 | struct compound_hdr hdr = { | |
1290 | .nops = 4, | |
1291 | }; | |
1292 | int status; | |
1293 | ||
1294 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1295 | encode_compound_hdr(&xdr, &hdr); | |
1296 | if ((status = encode_putfh(&xdr, args->fh)) != 0) | |
1297 | goto out; | |
1298 | if ((status = encode_savefh(&xdr)) != 0) | |
1299 | goto out; | |
1300 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1301 | goto out; | |
1302 | status = encode_link(&xdr, args->name); | |
1303 | out: | |
1304 | return status; | |
1305 | } | |
1306 | ||
1307 | /* | |
1308 | * Encode CREATE request | |
1309 | */ | |
1310 | static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1311 | { | |
1312 | struct xdr_stream xdr; | |
1313 | struct compound_hdr hdr = { | |
1314 | .nops = 4, | |
1315 | }; | |
1316 | int status; | |
1317 | ||
1318 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1319 | encode_compound_hdr(&xdr, &hdr); | |
1320 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1321 | goto out; | |
1322 | if ((status = encode_create(&xdr, args)) != 0) | |
1323 | goto out; | |
1324 | if ((status = encode_getfh(&xdr)) != 0) | |
1325 | goto out; | |
1326 | status = encode_getfattr(&xdr, args->bitmask); | |
1327 | out: | |
1328 | return status; | |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * Encode SYMLINK request | |
1333 | */ | |
1334 | static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1335 | { | |
1336 | return nfs4_xdr_enc_create(req, p, args); | |
1337 | } | |
1338 | ||
1339 | /* | |
1340 | * Encode GETATTR request | |
1341 | */ | |
1342 | static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args) | |
1343 | { | |
1344 | struct xdr_stream xdr; | |
1345 | struct compound_hdr hdr = { | |
1346 | .nops = 2, | |
1347 | }; | |
1348 | int status; | |
1349 | ||
1350 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1351 | encode_compound_hdr(&xdr, &hdr); | |
1352 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1353 | status = encode_getfattr(&xdr, args->bitmask); | |
1354 | return status; | |
1355 | } | |
1356 | ||
1357 | /* | |
1358 | * Encode a CLOSE request | |
1359 | */ | |
1360 | static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1361 | { | |
1362 | struct xdr_stream xdr; | |
1363 | struct compound_hdr hdr = { | |
1364 | .nops = 2, | |
1365 | }; | |
1366 | int status; | |
1367 | ||
1368 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1369 | encode_compound_hdr(&xdr, &hdr); | |
1370 | status = encode_putfh(&xdr, args->fh); | |
1371 | if(status) | |
1372 | goto out; | |
1373 | status = encode_close(&xdr, args); | |
1374 | out: | |
1375 | return status; | |
1376 | } | |
1377 | ||
1378 | /* | |
1379 | * Encode an OPEN request | |
1380 | */ | |
1381 | static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1382 | { | |
1383 | struct xdr_stream xdr; | |
1384 | struct compound_hdr hdr = { | |
1385 | .nops = 4, | |
1386 | }; | |
1387 | int status; | |
1388 | ||
1389 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1390 | encode_compound_hdr(&xdr, &hdr); | |
1391 | status = encode_putfh(&xdr, args->fh); | |
1392 | if (status) | |
1393 | goto out; | |
1394 | status = encode_open(&xdr, args); | |
1395 | if (status) | |
1396 | goto out; | |
1397 | status = encode_getfh(&xdr); | |
1398 | if (status) | |
1399 | goto out; | |
1400 | status = encode_getfattr(&xdr, args->bitmask); | |
1401 | out: | |
1402 | return status; | |
1403 | } | |
1404 | ||
1405 | /* | |
1406 | * Encode an OPEN_CONFIRM request | |
1407 | */ | |
1408 | static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args) | |
1409 | { | |
1410 | struct xdr_stream xdr; | |
1411 | struct compound_hdr hdr = { | |
1412 | .nops = 2, | |
1413 | }; | |
1414 | int status; | |
1415 | ||
1416 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1417 | encode_compound_hdr(&xdr, &hdr); | |
1418 | status = encode_putfh(&xdr, args->fh); | |
1419 | if(status) | |
1420 | goto out; | |
1421 | status = encode_open_confirm(&xdr, args); | |
1422 | out: | |
1423 | return status; | |
1424 | } | |
1425 | ||
1426 | /* | |
1427 | * Encode an OPEN request with no attributes. | |
1428 | */ | |
1429 | static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1430 | { | |
1431 | struct xdr_stream xdr; | |
1432 | struct compound_hdr hdr = { | |
1433 | .nops = 2, | |
1434 | }; | |
1435 | int status; | |
1436 | ||
1437 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1438 | encode_compound_hdr(&xdr, &hdr); | |
1439 | status = encode_putfh(&xdr, args->fh); | |
1440 | if (status) | |
1441 | goto out; | |
1442 | status = encode_open(&xdr, args); | |
1443 | out: | |
1444 | return status; | |
1445 | } | |
1446 | ||
1447 | /* | |
1448 | * Encode an OPEN_DOWNGRADE request | |
1449 | */ | |
1450 | static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1451 | { | |
1452 | struct xdr_stream xdr; | |
1453 | struct compound_hdr hdr = { | |
1454 | .nops = 2, | |
1455 | }; | |
1456 | int status; | |
1457 | ||
1458 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1459 | encode_compound_hdr(&xdr, &hdr); | |
1460 | status = encode_putfh(&xdr, args->fh); | |
1461 | if (status) | |
1462 | goto out; | |
1463 | status = encode_open_downgrade(&xdr, args); | |
1464 | out: | |
1465 | return status; | |
1466 | } | |
1467 | ||
1468 | /* | |
1469 | * Encode a LOCK request | |
1470 | */ | |
1471 | static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1472 | { | |
1473 | struct xdr_stream xdr; | |
1474 | struct compound_hdr hdr = { | |
1475 | .nops = 2, | |
1476 | }; | |
1477 | int status; | |
1478 | ||
1479 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1480 | encode_compound_hdr(&xdr, &hdr); | |
1481 | status = encode_putfh(&xdr, args->fh); | |
1482 | if(status) | |
1483 | goto out; | |
1484 | status = encode_lock(&xdr, args); | |
1485 | out: | |
1486 | return status; | |
1487 | } | |
1488 | ||
1489 | /* | |
1490 | * Encode a LOCKT request | |
1491 | */ | |
1492 | static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1493 | { | |
1494 | struct xdr_stream xdr; | |
1495 | struct compound_hdr hdr = { | |
1496 | .nops = 2, | |
1497 | }; | |
1498 | int status; | |
1499 | ||
1500 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1501 | encode_compound_hdr(&xdr, &hdr); | |
1502 | status = encode_putfh(&xdr, args->fh); | |
1503 | if(status) | |
1504 | goto out; | |
1505 | status = encode_lockt(&xdr, args); | |
1506 | out: | |
1507 | return status; | |
1508 | } | |
1509 | ||
1510 | /* | |
1511 | * Encode a LOCKU request | |
1512 | */ | |
1513 | static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1514 | { | |
1515 | struct xdr_stream xdr; | |
1516 | struct compound_hdr hdr = { | |
1517 | .nops = 2, | |
1518 | }; | |
1519 | int status; | |
1520 | ||
1521 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1522 | encode_compound_hdr(&xdr, &hdr); | |
1523 | status = encode_putfh(&xdr, args->fh); | |
1524 | if(status) | |
1525 | goto out; | |
1526 | status = encode_locku(&xdr, args); | |
1527 | out: | |
1528 | return status; | |
1529 | } | |
1530 | ||
1531 | /* | |
1532 | * Encode a READLINK request | |
1533 | */ | |
1534 | static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args) | |
1535 | { | |
1536 | struct xdr_stream xdr; | |
1537 | struct compound_hdr hdr = { | |
1538 | .nops = 2, | |
1539 | }; | |
1540 | int status; | |
1541 | ||
1542 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1543 | encode_compound_hdr(&xdr, &hdr); | |
1544 | status = encode_putfh(&xdr, args->fh); | |
1545 | if(status) | |
1546 | goto out; | |
1547 | status = encode_readlink(&xdr, args, req); | |
1548 | out: | |
1549 | return status; | |
1550 | } | |
1551 | ||
1552 | /* | |
1553 | * Encode a READDIR request | |
1554 | */ | |
1555 | static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args) | |
1556 | { | |
1557 | struct xdr_stream xdr; | |
1558 | struct compound_hdr hdr = { | |
1559 | .nops = 2, | |
1560 | }; | |
1561 | int status; | |
1562 | ||
1563 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1564 | encode_compound_hdr(&xdr, &hdr); | |
1565 | status = encode_putfh(&xdr, args->fh); | |
1566 | if(status) | |
1567 | goto out; | |
1568 | status = encode_readdir(&xdr, args, req); | |
1569 | out: | |
1570 | return status; | |
1571 | } | |
1572 | ||
1573 | /* | |
1574 | * Encode a READ request | |
1575 | */ | |
1576 | static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args) | |
1577 | { | |
1578 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1579 | struct xdr_stream xdr; | |
1580 | struct compound_hdr hdr = { | |
1581 | .nops = 2, | |
1582 | }; | |
1583 | int replen, status; | |
1584 | ||
1585 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1586 | encode_compound_hdr(&xdr, &hdr); | |
1587 | status = encode_putfh(&xdr, args->fh); | |
1588 | if (status) | |
1589 | goto out; | |
1590 | status = encode_read(&xdr, args); | |
1591 | if (status) | |
1592 | goto out; | |
1593 | ||
1594 | /* set up reply kvec | |
1595 | * toplevel status + taglen=0 + rescount + OP_PUTFH + status | |
1596 | * + OP_READ + status + eof + datalen = 9 | |
1597 | */ | |
1598 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2; | |
1599 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
1600 | args->pages, args->pgbase, args->count); | |
1601 | out: | |
1602 | return status; | |
1603 | } | |
1604 | ||
1605 | /* | |
1606 | * Encode an SETATTR request | |
1607 | */ | |
1608 | static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args) | |
1609 | ||
1610 | { | |
1611 | struct xdr_stream xdr; | |
1612 | struct compound_hdr hdr = { | |
1613 | .nops = 3, | |
1614 | }; | |
1615 | int status; | |
1616 | ||
1617 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1618 | encode_compound_hdr(&xdr, &hdr); | |
1619 | status = encode_putfh(&xdr, args->fh); | |
1620 | if(status) | |
1621 | goto out; | |
1622 | status = encode_setattr(&xdr, args, args->server); | |
1623 | if(status) | |
1624 | goto out; | |
1625 | status = encode_getfattr(&xdr, args->bitmask); | |
1626 | out: | |
1627 | return status; | |
1628 | } | |
1629 | ||
1630 | /* | |
1631 | * Encode a WRITE request | |
1632 | */ | |
1633 | static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1634 | { | |
1635 | struct xdr_stream xdr; | |
1636 | struct compound_hdr hdr = { | |
1637 | .nops = 2, | |
1638 | }; | |
1639 | int status; | |
1640 | ||
1641 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1642 | encode_compound_hdr(&xdr, &hdr); | |
1643 | status = encode_putfh(&xdr, args->fh); | |
1644 | if (status) | |
1645 | goto out; | |
1646 | status = encode_write(&xdr, args); | |
1647 | out: | |
1648 | return status; | |
1649 | } | |
1650 | ||
1651 | /* | |
1652 | * a COMMIT request | |
1653 | */ | |
1654 | static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1655 | { | |
1656 | struct xdr_stream xdr; | |
1657 | struct compound_hdr hdr = { | |
1658 | .nops = 2, | |
1659 | }; | |
1660 | int status; | |
1661 | ||
1662 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1663 | encode_compound_hdr(&xdr, &hdr); | |
1664 | status = encode_putfh(&xdr, args->fh); | |
1665 | if (status) | |
1666 | goto out; | |
1667 | status = encode_commit(&xdr, args); | |
1668 | out: | |
1669 | return status; | |
1670 | } | |
1671 | ||
1672 | /* | |
1673 | * FSINFO request | |
1674 | */ | |
1675 | static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args) | |
1676 | { | |
1677 | struct xdr_stream xdr; | |
1678 | struct compound_hdr hdr = { | |
1679 | .nops = 2, | |
1680 | }; | |
1681 | int status; | |
1682 | ||
1683 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1684 | encode_compound_hdr(&xdr, &hdr); | |
1685 | status = encode_putfh(&xdr, args->fh); | |
1686 | if (!status) | |
1687 | status = encode_fsinfo(&xdr, args->bitmask); | |
1688 | return status; | |
1689 | } | |
1690 | ||
1691 | /* | |
1692 | * a PATHCONF request | |
1693 | */ | |
1694 | static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args) | |
1695 | { | |
1da177e4 LT |
1696 | struct xdr_stream xdr; |
1697 | struct compound_hdr hdr = { | |
1698 | .nops = 2, | |
1699 | }; | |
1700 | int status; | |
1701 | ||
1702 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1703 | encode_compound_hdr(&xdr, &hdr); | |
1704 | status = encode_putfh(&xdr, args->fh); | |
1705 | if (!status) | |
1706 | status = encode_getattr_one(&xdr, | |
1707 | args->bitmask[0] & nfs4_pathconf_bitmap[0]); | |
1708 | return status; | |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * a STATFS request | |
1713 | */ | |
1714 | static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args) | |
1715 | { | |
1da177e4 LT |
1716 | struct xdr_stream xdr; |
1717 | struct compound_hdr hdr = { | |
1718 | .nops = 2, | |
1719 | }; | |
1720 | int status; | |
1721 | ||
1722 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1723 | encode_compound_hdr(&xdr, &hdr); | |
1724 | status = encode_putfh(&xdr, args->fh); | |
1725 | if (status == 0) | |
1726 | status = encode_getattr_two(&xdr, | |
1727 | args->bitmask[0] & nfs4_statfs_bitmap[0], | |
1728 | args->bitmask[1] & nfs4_statfs_bitmap[1]); | |
1729 | return status; | |
1730 | } | |
1731 | ||
1732 | /* | |
1733 | * GETATTR_BITMAP request | |
1734 | */ | |
1735 | static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle) | |
1736 | { | |
1737 | struct xdr_stream xdr; | |
1738 | struct compound_hdr hdr = { | |
1739 | .nops = 2, | |
1740 | }; | |
1741 | int status; | |
1742 | ||
1743 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1744 | encode_compound_hdr(&xdr, &hdr); | |
1745 | status = encode_putfh(&xdr, fhandle); | |
1746 | if (status == 0) | |
1747 | status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| | |
1748 | FATTR4_WORD0_LINK_SUPPORT| | |
1749 | FATTR4_WORD0_SYMLINK_SUPPORT| | |
1750 | FATTR4_WORD0_ACLSUPPORT); | |
1751 | return status; | |
1752 | } | |
1753 | ||
1754 | /* | |
1755 | * a RENEW request | |
1756 | */ | |
1757 | static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1758 | { | |
1759 | struct xdr_stream xdr; | |
1760 | struct compound_hdr hdr = { | |
1761 | .nops = 1, | |
1762 | }; | |
1763 | ||
1764 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1765 | encode_compound_hdr(&xdr, &hdr); | |
1766 | return encode_renew(&xdr, clp); | |
1767 | } | |
1768 | ||
1769 | /* | |
1770 | * a SETCLIENTID request | |
1771 | */ | |
1772 | static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc) | |
1773 | { | |
1774 | struct xdr_stream xdr; | |
1775 | struct compound_hdr hdr = { | |
1776 | .nops = 1, | |
1777 | }; | |
1778 | ||
1779 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1780 | encode_compound_hdr(&xdr, &hdr); | |
1781 | return encode_setclientid(&xdr, sc); | |
1782 | } | |
1783 | ||
1784 | /* | |
1785 | * a SETCLIENTID_CONFIRM request | |
1786 | */ | |
1787 | static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1788 | { | |
1789 | struct xdr_stream xdr; | |
1790 | struct compound_hdr hdr = { | |
1791 | .nops = 3, | |
1792 | }; | |
1793 | const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; | |
1794 | int status; | |
1795 | ||
1796 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1797 | encode_compound_hdr(&xdr, &hdr); | |
1798 | status = encode_setclientid_confirm(&xdr, clp); | |
1799 | if (!status) | |
1800 | status = encode_putrootfh(&xdr); | |
1801 | if (!status) | |
1802 | status = encode_fsinfo(&xdr, lease_bitmap); | |
1803 | return status; | |
1804 | } | |
1805 | ||
1806 | /* | |
1807 | * DELEGRETURN request | |
1808 | */ | |
1809 | static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args) | |
1810 | { | |
1811 | struct xdr_stream xdr; | |
1812 | struct compound_hdr hdr = { | |
1813 | .nops = 2, | |
1814 | }; | |
1815 | int status; | |
1816 | ||
1817 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1818 | encode_compound_hdr(&xdr, &hdr); | |
1819 | if ((status = encode_putfh(&xdr, args->fhandle)) == 0) | |
1820 | status = encode_delegreturn(&xdr, args->stateid); | |
1821 | return status; | |
1822 | } | |
1823 | ||
1824 | /* | |
1825 | * START OF "GENERIC" DECODE ROUTINES. | |
1826 | * These may look a little ugly since they are imported from a "generic" | |
1827 | * set of XDR encode/decode routines which are intended to be shared by | |
1828 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1829 | * | |
1830 | * If the pain of reading these is too great, it should be a straightforward | |
1831 | * task to translate them into Linux-specific versions which are more | |
1832 | * consistent with the style used in NFSv2/v3... | |
1833 | */ | |
1834 | #define READ32(x) (x) = ntohl(*p++) | |
1835 | #define READ64(x) do { \ | |
1836 | (x) = (u64)ntohl(*p++) << 32; \ | |
1837 | (x) |= ntohl(*p++); \ | |
1838 | } while (0) | |
1839 | #define READTIME(x) do { \ | |
1840 | p++; \ | |
1841 | (x.tv_sec) = ntohl(*p++); \ | |
1842 | (x.tv_nsec) = ntohl(*p++); \ | |
1843 | } while (0) | |
1844 | #define COPYMEM(x,nbytes) do { \ | |
1845 | memcpy((x), p, nbytes); \ | |
1846 | p += XDR_QUADLEN(nbytes); \ | |
1847 | } while (0) | |
1848 | ||
1849 | #define READ_BUF(nbytes) do { \ | |
1850 | p = xdr_inline_decode(xdr, nbytes); \ | |
1851 | if (!p) { \ | |
1852 | printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \ | |
1853 | __FUNCTION__, __LINE__); \ | |
1854 | return -EIO; \ | |
1855 | } \ | |
1856 | } while (0) | |
1857 | ||
1858 | static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string) | |
1859 | { | |
1860 | uint32_t *p; | |
1861 | ||
1862 | READ_BUF(4); | |
1863 | READ32(*len); | |
1864 | READ_BUF(*len); | |
1865 | *string = (char *)p; | |
1866 | return 0; | |
1867 | } | |
1868 | ||
1869 | static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
1870 | { | |
1871 | uint32_t *p; | |
1872 | ||
1873 | READ_BUF(8); | |
1874 | READ32(hdr->status); | |
1875 | READ32(hdr->taglen); | |
1876 | ||
1877 | READ_BUF(hdr->taglen + 4); | |
1878 | hdr->tag = (char *)p; | |
1879 | p += XDR_QUADLEN(hdr->taglen); | |
1880 | READ32(hdr->nops); | |
1881 | return 0; | |
1882 | } | |
1883 | ||
1884 | static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) | |
1885 | { | |
1886 | uint32_t *p; | |
1887 | uint32_t opnum; | |
1888 | int32_t nfserr; | |
1889 | ||
1890 | READ_BUF(8); | |
1891 | READ32(opnum); | |
1892 | if (opnum != expected) { | |
1893 | printk(KERN_NOTICE | |
1894 | "nfs4_decode_op_hdr: Server returned operation" | |
1895 | " %d but we issued a request for %d\n", | |
1896 | opnum, expected); | |
1897 | return -EIO; | |
1898 | } | |
1899 | READ32(nfserr); | |
1900 | if (nfserr != NFS_OK) | |
1901 | return -nfs_stat_to_errno(nfserr); | |
1902 | return 0; | |
1903 | } | |
1904 | ||
1905 | /* Dummy routine */ | |
1906 | static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp) | |
1907 | { | |
1908 | uint32_t *p; | |
1909 | uint32_t strlen; | |
1910 | char *str; | |
1911 | ||
1912 | READ_BUF(12); | |
1913 | return decode_opaque_inline(xdr, &strlen, &str); | |
1914 | } | |
1915 | ||
1916 | static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) | |
1917 | { | |
1918 | uint32_t bmlen, *p; | |
1919 | ||
1920 | READ_BUF(4); | |
1921 | READ32(bmlen); | |
1922 | ||
1923 | bitmap[0] = bitmap[1] = 0; | |
1924 | READ_BUF((bmlen << 2)); | |
1925 | if (bmlen > 0) { | |
1926 | READ32(bitmap[0]); | |
1927 | if (bmlen > 1) | |
1928 | READ32(bitmap[1]); | |
1929 | } | |
1930 | return 0; | |
1931 | } | |
1932 | ||
1933 | static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep) | |
1934 | { | |
1935 | uint32_t *p; | |
1936 | ||
1937 | READ_BUF(4); | |
1938 | READ32(*attrlen); | |
1939 | *savep = xdr->p; | |
1940 | return 0; | |
1941 | } | |
1942 | ||
1943 | static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) | |
1944 | { | |
1945 | if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
1946 | decode_attr_bitmap(xdr, bitmask); | |
1947 | bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; | |
1948 | } else | |
1949 | bitmask[0] = bitmask[1] = 0; | |
1950 | dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]); | |
1951 | return 0; | |
1952 | } | |
1953 | ||
1954 | static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) | |
1955 | { | |
1956 | uint32_t *p; | |
1957 | ||
1958 | *type = 0; | |
1959 | if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) | |
1960 | return -EIO; | |
1961 | if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { | |
1962 | READ_BUF(4); | |
1963 | READ32(*type); | |
1964 | if (*type < NF4REG || *type > NF4NAMEDATTR) { | |
1965 | dprintk("%s: bad type %d\n", __FUNCTION__, *type); | |
1966 | return -EIO; | |
1967 | } | |
1968 | bitmap[0] &= ~FATTR4_WORD0_TYPE; | |
1969 | } | |
1970 | dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type); | |
1971 | return 0; | |
1972 | } | |
1973 | ||
1974 | static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) | |
1975 | { | |
1976 | uint32_t *p; | |
1977 | ||
1978 | *change = 0; | |
1979 | if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) | |
1980 | return -EIO; | |
1981 | if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { | |
1982 | READ_BUF(8); | |
1983 | READ64(*change); | |
1984 | bitmap[0] &= ~FATTR4_WORD0_CHANGE; | |
1985 | } | |
1986 | dprintk("%s: change attribute=%Lu\n", __FUNCTION__, | |
1987 | (unsigned long long)*change); | |
1988 | return 0; | |
1989 | } | |
1990 | ||
1991 | static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) | |
1992 | { | |
1993 | uint32_t *p; | |
1994 | ||
1995 | *size = 0; | |
1996 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) | |
1997 | return -EIO; | |
1998 | if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { | |
1999 | READ_BUF(8); | |
2000 | READ64(*size); | |
2001 | bitmap[0] &= ~FATTR4_WORD0_SIZE; | |
2002 | } | |
2003 | dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size); | |
2004 | return 0; | |
2005 | } | |
2006 | ||
2007 | static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2008 | { | |
2009 | uint32_t *p; | |
2010 | ||
2011 | *res = 0; | |
2012 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) | |
2013 | return -EIO; | |
2014 | if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { | |
2015 | READ_BUF(4); | |
2016 | READ32(*res); | |
2017 | bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; | |
2018 | } | |
2019 | dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2024 | { | |
2025 | uint32_t *p; | |
2026 | ||
2027 | *res = 0; | |
2028 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) | |
2029 | return -EIO; | |
2030 | if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { | |
2031 | READ_BUF(4); | |
2032 | READ32(*res); | |
2033 | bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; | |
2034 | } | |
2035 | dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2036 | return 0; | |
2037 | } | |
2038 | ||
2039 | static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid) | |
2040 | { | |
2041 | uint32_t *p; | |
2042 | ||
2043 | fsid->major = 0; | |
2044 | fsid->minor = 0; | |
2045 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) | |
2046 | return -EIO; | |
2047 | if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { | |
2048 | READ_BUF(16); | |
2049 | READ64(fsid->major); | |
2050 | READ64(fsid->minor); | |
2051 | bitmap[0] &= ~FATTR4_WORD0_FSID; | |
2052 | } | |
2053 | dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__, | |
2054 | (unsigned long long)fsid->major, | |
2055 | (unsigned long long)fsid->minor); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
2059 | static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2060 | { | |
2061 | uint32_t *p; | |
2062 | ||
2063 | *res = 60; | |
2064 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) | |
2065 | return -EIO; | |
2066 | if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { | |
2067 | READ_BUF(4); | |
2068 | READ32(*res); | |
2069 | bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; | |
2070 | } | |
2071 | dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res); | |
2072 | return 0; | |
2073 | } | |
2074 | ||
2075 | static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2076 | { | |
2077 | uint32_t *p; | |
2078 | ||
2079 | *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; | |
2080 | if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) | |
2081 | return -EIO; | |
2082 | if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { | |
2083 | READ_BUF(4); | |
2084 | READ32(*res); | |
2085 | bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; | |
2086 | } | |
2087 | dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res); | |
2088 | return 0; | |
2089 | } | |
2090 | ||
2091 | static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) | |
2092 | { | |
2093 | uint32_t *p; | |
2094 | ||
2095 | *fileid = 0; | |
2096 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) | |
2097 | return -EIO; | |
2098 | if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { | |
2099 | READ_BUF(8); | |
2100 | READ64(*fileid); | |
2101 | bitmap[0] &= ~FATTR4_WORD0_FILEID; | |
2102 | } | |
2103 | dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid); | |
2104 | return 0; | |
2105 | } | |
2106 | ||
2107 | static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2108 | { | |
2109 | uint32_t *p; | |
2110 | int status = 0; | |
2111 | ||
2112 | *res = 0; | |
2113 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) | |
2114 | return -EIO; | |
2115 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { | |
2116 | READ_BUF(8); | |
2117 | READ64(*res); | |
2118 | bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; | |
2119 | } | |
2120 | dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2121 | return status; | |
2122 | } | |
2123 | ||
2124 | static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2125 | { | |
2126 | uint32_t *p; | |
2127 | int status = 0; | |
2128 | ||
2129 | *res = 0; | |
2130 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) | |
2131 | return -EIO; | |
2132 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { | |
2133 | READ_BUF(8); | |
2134 | READ64(*res); | |
2135 | bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; | |
2136 | } | |
2137 | dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2138 | return status; | |
2139 | } | |
2140 | ||
2141 | static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2142 | { | |
2143 | uint32_t *p; | |
2144 | int status = 0; | |
2145 | ||
2146 | *res = 0; | |
2147 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) | |
2148 | return -EIO; | |
2149 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { | |
2150 | READ_BUF(8); | |
2151 | READ64(*res); | |
2152 | bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; | |
2153 | } | |
2154 | dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2155 | return status; | |
2156 | } | |
2157 | ||
2158 | static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2159 | { | |
2160 | uint32_t *p; | |
2161 | int status = 0; | |
2162 | ||
2163 | *res = 0; | |
2164 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) | |
2165 | return -EIO; | |
2166 | if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { | |
2167 | READ_BUF(8); | |
2168 | READ64(*res); | |
2169 | bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; | |
2170 | } | |
2171 | dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2172 | return status; | |
2173 | } | |
2174 | ||
2175 | static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) | |
2176 | { | |
2177 | uint32_t *p; | |
2178 | int status = 0; | |
2179 | ||
2180 | *maxlink = 1; | |
2181 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) | |
2182 | return -EIO; | |
2183 | if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { | |
2184 | READ_BUF(4); | |
2185 | READ32(*maxlink); | |
2186 | bitmap[0] &= ~FATTR4_WORD0_MAXLINK; | |
2187 | } | |
2188 | dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink); | |
2189 | return status; | |
2190 | } | |
2191 | ||
2192 | static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) | |
2193 | { | |
2194 | uint32_t *p; | |
2195 | int status = 0; | |
2196 | ||
2197 | *maxname = 1024; | |
2198 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) | |
2199 | return -EIO; | |
2200 | if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { | |
2201 | READ_BUF(4); | |
2202 | READ32(*maxname); | |
2203 | bitmap[0] &= ~FATTR4_WORD0_MAXNAME; | |
2204 | } | |
2205 | dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname); | |
2206 | return status; | |
2207 | } | |
2208 | ||
2209 | static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2210 | { | |
2211 | uint32_t *p; | |
2212 | int status = 0; | |
2213 | ||
2214 | *res = 1024; | |
2215 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) | |
2216 | return -EIO; | |
2217 | if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { | |
2218 | uint64_t maxread; | |
2219 | READ_BUF(8); | |
2220 | READ64(maxread); | |
2221 | if (maxread > 0x7FFFFFFF) | |
2222 | maxread = 0x7FFFFFFF; | |
2223 | *res = (uint32_t)maxread; | |
2224 | bitmap[0] &= ~FATTR4_WORD0_MAXREAD; | |
2225 | } | |
2226 | dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2227 | return status; | |
2228 | } | |
2229 | ||
2230 | static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2231 | { | |
2232 | uint32_t *p; | |
2233 | int status = 0; | |
2234 | ||
2235 | *res = 1024; | |
2236 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) | |
2237 | return -EIO; | |
2238 | if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { | |
2239 | uint64_t maxwrite; | |
2240 | READ_BUF(8); | |
2241 | READ64(maxwrite); | |
2242 | if (maxwrite > 0x7FFFFFFF) | |
2243 | maxwrite = 0x7FFFFFFF; | |
2244 | *res = (uint32_t)maxwrite; | |
2245 | bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; | |
2246 | } | |
2247 | dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2248 | return status; | |
2249 | } | |
2250 | ||
2251 | static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode) | |
2252 | { | |
2253 | uint32_t *p; | |
2254 | ||
2255 | *mode = 0; | |
2256 | if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) | |
2257 | return -EIO; | |
2258 | if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { | |
2259 | READ_BUF(4); | |
2260 | READ32(*mode); | |
2261 | *mode &= ~S_IFMT; | |
2262 | bitmap[1] &= ~FATTR4_WORD1_MODE; | |
2263 | } | |
2264 | dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode); | |
2265 | return 0; | |
2266 | } | |
2267 | ||
2268 | static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) | |
2269 | { | |
2270 | uint32_t *p; | |
2271 | ||
2272 | *nlink = 1; | |
2273 | if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) | |
2274 | return -EIO; | |
2275 | if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { | |
2276 | READ_BUF(4); | |
2277 | READ32(*nlink); | |
2278 | bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; | |
2279 | } | |
2280 | dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink); | |
2281 | return 0; | |
2282 | } | |
2283 | ||
2284 | static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid) | |
2285 | { | |
2286 | uint32_t len, *p; | |
2287 | ||
2288 | *uid = -2; | |
2289 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) | |
2290 | return -EIO; | |
2291 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { | |
2292 | READ_BUF(4); | |
2293 | READ32(len); | |
2294 | READ_BUF(len); | |
2295 | if (len < XDR_MAX_NETOBJ) { | |
2296 | if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0) | |
2297 | dprintk("%s: nfs_map_name_to_uid failed!\n", | |
2298 | __FUNCTION__); | |
2299 | } else | |
2300 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2301 | __FUNCTION__, len); | |
2302 | bitmap[1] &= ~FATTR4_WORD1_OWNER; | |
2303 | } | |
2304 | dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid); | |
2305 | return 0; | |
2306 | } | |
2307 | ||
2308 | static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid) | |
2309 | { | |
2310 | uint32_t len, *p; | |
2311 | ||
2312 | *gid = -2; | |
2313 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) | |
2314 | return -EIO; | |
2315 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { | |
2316 | READ_BUF(4); | |
2317 | READ32(len); | |
2318 | READ_BUF(len); | |
2319 | if (len < XDR_MAX_NETOBJ) { | |
2320 | if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0) | |
2321 | dprintk("%s: nfs_map_group_to_gid failed!\n", | |
2322 | __FUNCTION__); | |
2323 | } else | |
2324 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2325 | __FUNCTION__, len); | |
2326 | bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; | |
2327 | } | |
2328 | dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid); | |
2329 | return 0; | |
2330 | } | |
2331 | ||
2332 | static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) | |
2333 | { | |
2334 | uint32_t major = 0, minor = 0, *p; | |
2335 | ||
2336 | *rdev = MKDEV(0,0); | |
2337 | if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) | |
2338 | return -EIO; | |
2339 | if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { | |
2340 | dev_t tmp; | |
2341 | ||
2342 | READ_BUF(8); | |
2343 | READ32(major); | |
2344 | READ32(minor); | |
2345 | tmp = MKDEV(major, minor); | |
2346 | if (MAJOR(tmp) == major && MINOR(tmp) == minor) | |
2347 | *rdev = tmp; | |
2348 | bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; | |
2349 | } | |
2350 | dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor); | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2355 | { | |
2356 | uint32_t *p; | |
2357 | int status = 0; | |
2358 | ||
2359 | *res = 0; | |
2360 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) | |
2361 | return -EIO; | |
2362 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { | |
2363 | READ_BUF(8); | |
2364 | READ64(*res); | |
2365 | bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; | |
2366 | } | |
2367 | dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2368 | return status; | |
2369 | } | |
2370 | ||
2371 | static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2372 | { | |
2373 | uint32_t *p; | |
2374 | int status = 0; | |
2375 | ||
2376 | *res = 0; | |
2377 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) | |
2378 | return -EIO; | |
2379 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { | |
2380 | READ_BUF(8); | |
2381 | READ64(*res); | |
2382 | bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; | |
2383 | } | |
2384 | dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2385 | return status; | |
2386 | } | |
2387 | ||
2388 | static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2389 | { | |
2390 | uint32_t *p; | |
2391 | int status = 0; | |
2392 | ||
2393 | *res = 0; | |
2394 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) | |
2395 | return -EIO; | |
2396 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { | |
2397 | READ_BUF(8); | |
2398 | READ64(*res); | |
2399 | bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; | |
2400 | } | |
2401 | dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2402 | return status; | |
2403 | } | |
2404 | ||
2405 | static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) | |
2406 | { | |
2407 | uint32_t *p; | |
2408 | ||
2409 | *used = 0; | |
2410 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) | |
2411 | return -EIO; | |
2412 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { | |
2413 | READ_BUF(8); | |
2414 | READ64(*used); | |
2415 | bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; | |
2416 | } | |
2417 | dprintk("%s: space used=%Lu\n", __FUNCTION__, | |
2418 | (unsigned long long)*used); | |
2419 | return 0; | |
2420 | } | |
2421 | ||
2422 | static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) | |
2423 | { | |
2424 | uint32_t *p; | |
2425 | uint64_t sec; | |
2426 | uint32_t nsec; | |
2427 | ||
2428 | READ_BUF(12); | |
2429 | READ64(sec); | |
2430 | READ32(nsec); | |
2431 | time->tv_sec = (time_t)sec; | |
2432 | time->tv_nsec = (long)nsec; | |
2433 | return 0; | |
2434 | } | |
2435 | ||
2436 | static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2437 | { | |
2438 | int status = 0; | |
2439 | ||
2440 | time->tv_sec = 0; | |
2441 | time->tv_nsec = 0; | |
2442 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) | |
2443 | return -EIO; | |
2444 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { | |
2445 | status = decode_attr_time(xdr, time); | |
2446 | bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; | |
2447 | } | |
2448 | dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2449 | return status; | |
2450 | } | |
2451 | ||
2452 | static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2453 | { | |
2454 | int status = 0; | |
2455 | ||
2456 | time->tv_sec = 0; | |
2457 | time->tv_nsec = 0; | |
2458 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) | |
2459 | return -EIO; | |
2460 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { | |
2461 | status = decode_attr_time(xdr, time); | |
2462 | bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; | |
2463 | } | |
2464 | dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2465 | return status; | |
2466 | } | |
2467 | ||
2468 | static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2469 | { | |
2470 | int status = 0; | |
2471 | ||
2472 | time->tv_sec = 0; | |
2473 | time->tv_nsec = 0; | |
2474 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) | |
2475 | return -EIO; | |
2476 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { | |
2477 | status = decode_attr_time(xdr, time); | |
2478 | bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; | |
2479 | } | |
2480 | dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2481 | return status; | |
2482 | } | |
2483 | ||
2484 | static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen) | |
2485 | { | |
2486 | unsigned int attrwords = XDR_QUADLEN(attrlen); | |
2487 | unsigned int nwords = xdr->p - savep; | |
2488 | ||
2489 | if (unlikely(attrwords != nwords)) { | |
2490 | printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n", | |
2491 | __FUNCTION__, | |
2492 | attrwords << 2, | |
2493 | (attrwords < nwords) ? '<' : '>', | |
2494 | nwords << 2); | |
2495 | return -EIO; | |
2496 | } | |
2497 | return 0; | |
2498 | } | |
2499 | ||
2500 | static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2501 | { | |
2502 | uint32_t *p; | |
2503 | ||
2504 | READ_BUF(20); | |
2505 | READ32(cinfo->atomic); | |
2506 | READ64(cinfo->before); | |
2507 | READ64(cinfo->after); | |
2508 | return 0; | |
2509 | } | |
2510 | ||
2511 | static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) | |
2512 | { | |
2513 | uint32_t *p; | |
2514 | uint32_t supp, acc; | |
2515 | int status; | |
2516 | ||
2517 | status = decode_op_hdr(xdr, OP_ACCESS); | |
2518 | if (status) | |
2519 | return status; | |
2520 | READ_BUF(8); | |
2521 | READ32(supp); | |
2522 | READ32(acc); | |
2523 | access->supported = supp; | |
2524 | access->access = acc; | |
2525 | return 0; | |
2526 | } | |
2527 | ||
2528 | static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2529 | { | |
2530 | uint32_t *p; | |
2531 | int status; | |
2532 | ||
2533 | status = decode_op_hdr(xdr, OP_CLOSE); | |
2534 | if (status) | |
2535 | return status; | |
2536 | READ_BUF(sizeof(res->stateid.data)); | |
2537 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2538 | return 0; | |
2539 | } | |
2540 | ||
2541 | static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) | |
2542 | { | |
2543 | uint32_t *p; | |
2544 | int status; | |
2545 | ||
2546 | status = decode_op_hdr(xdr, OP_COMMIT); | |
2547 | if (status) | |
2548 | return status; | |
2549 | READ_BUF(8); | |
2550 | COPYMEM(res->verf->verifier, 8); | |
2551 | return 0; | |
2552 | } | |
2553 | ||
2554 | static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2555 | { | |
2556 | uint32_t *p; | |
2557 | uint32_t bmlen; | |
2558 | int status; | |
2559 | ||
2560 | status = decode_op_hdr(xdr, OP_CREATE); | |
2561 | if (status) | |
2562 | return status; | |
2563 | if ((status = decode_change_info(xdr, cinfo))) | |
2564 | return status; | |
2565 | READ_BUF(4); | |
2566 | READ32(bmlen); | |
2567 | READ_BUF(bmlen << 2); | |
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) | |
2572 | { | |
2573 | uint32_t *savep; | |
2574 | uint32_t attrlen, | |
2575 | bitmap[2] = {0}; | |
2576 | int status; | |
2577 | ||
2578 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2579 | goto xdr_error; | |
2580 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2581 | goto xdr_error; | |
2582 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2583 | goto xdr_error; | |
2584 | if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) | |
2585 | goto xdr_error; | |
2586 | if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) | |
2587 | goto xdr_error; | |
2588 | if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) | |
2589 | goto xdr_error; | |
2590 | if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) | |
2591 | goto xdr_error; | |
2592 | status = verify_attr_len(xdr, savep, attrlen); | |
2593 | xdr_error: | |
2594 | if (status != 0) | |
2595 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2596 | return status; | |
2597 | } | |
2598 | ||
2599 | static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) | |
2600 | { | |
2601 | uint32_t *savep; | |
2602 | uint32_t attrlen, | |
2603 | bitmap[2] = {0}; | |
2604 | int status; | |
2605 | ||
2606 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2607 | goto xdr_error; | |
2608 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2609 | goto xdr_error; | |
2610 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2611 | goto xdr_error; | |
2612 | ||
2613 | if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) | |
2614 | goto xdr_error; | |
2615 | if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) | |
2616 | goto xdr_error; | |
2617 | if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) | |
2618 | goto xdr_error; | |
2619 | if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) | |
2620 | goto xdr_error; | |
2621 | if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) | |
2622 | goto xdr_error; | |
2623 | if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) | |
2624 | goto xdr_error; | |
2625 | ||
2626 | status = verify_attr_len(xdr, savep, attrlen); | |
2627 | xdr_error: | |
2628 | if (status != 0) | |
2629 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2630 | return status; | |
2631 | } | |
2632 | ||
2633 | static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) | |
2634 | { | |
2635 | uint32_t *savep; | |
2636 | uint32_t attrlen, | |
2637 | bitmap[2] = {0}; | |
2638 | int status; | |
2639 | ||
2640 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2641 | goto xdr_error; | |
2642 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2643 | goto xdr_error; | |
2644 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2645 | goto xdr_error; | |
2646 | ||
2647 | if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) | |
2648 | goto xdr_error; | |
2649 | if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) | |
2650 | goto xdr_error; | |
2651 | ||
2652 | status = verify_attr_len(xdr, savep, attrlen); | |
2653 | xdr_error: | |
2654 | if (status != 0) | |
2655 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2656 | return status; | |
2657 | } | |
2658 | ||
2659 | static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server) | |
2660 | { | |
2661 | uint32_t *savep; | |
2662 | uint32_t attrlen, | |
2663 | bitmap[2] = {0}, | |
2664 | type; | |
2665 | int status, fmode = 0; | |
2666 | ||
2667 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2668 | goto xdr_error; | |
2669 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2670 | goto xdr_error; | |
2671 | ||
2672 | fattr->bitmap[0] = bitmap[0]; | |
2673 | fattr->bitmap[1] = bitmap[1]; | |
2674 | ||
2675 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2676 | goto xdr_error; | |
2677 | ||
2678 | ||
2679 | if ((status = decode_attr_type(xdr, bitmap, &type)) != 0) | |
2680 | goto xdr_error; | |
2681 | fattr->type = nfs_type2fmt[type].nfs2type; | |
2682 | fmode = nfs_type2fmt[type].mode; | |
2683 | ||
2684 | if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0) | |
2685 | goto xdr_error; | |
2686 | if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0) | |
2687 | goto xdr_error; | |
2688 | if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0) | |
2689 | goto xdr_error; | |
2690 | if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0) | |
2691 | goto xdr_error; | |
2692 | if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0) | |
2693 | goto xdr_error; | |
2694 | fattr->mode |= fmode; | |
2695 | if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0) | |
2696 | goto xdr_error; | |
2697 | if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0) | |
2698 | goto xdr_error; | |
2699 | if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0) | |
2700 | goto xdr_error; | |
2701 | if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0) | |
2702 | goto xdr_error; | |
2703 | if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0) | |
2704 | goto xdr_error; | |
2705 | if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0) | |
2706 | goto xdr_error; | |
2707 | if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0) | |
2708 | goto xdr_error; | |
2709 | if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0) | |
2710 | goto xdr_error; | |
2711 | if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) { | |
2712 | fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4; | |
2713 | fattr->timestamp = jiffies; | |
2714 | } | |
2715 | xdr_error: | |
2716 | if (status != 0) | |
2717 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2718 | return status; | |
2719 | } | |
2720 | ||
2721 | ||
2722 | static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) | |
2723 | { | |
2724 | uint32_t *savep; | |
2725 | uint32_t attrlen, bitmap[2]; | |
2726 | int status; | |
2727 | ||
2728 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2729 | goto xdr_error; | |
2730 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2731 | goto xdr_error; | |
2732 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2733 | goto xdr_error; | |
2734 | ||
2735 | fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ | |
2736 | ||
2737 | if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) | |
2738 | goto xdr_error; | |
2739 | if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) | |
2740 | goto xdr_error; | |
2741 | if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) | |
2742 | goto xdr_error; | |
2743 | fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; | |
2744 | if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) | |
2745 | goto xdr_error; | |
2746 | fsinfo->wtpref = fsinfo->wtmax; | |
2747 | ||
2748 | status = verify_attr_len(xdr, savep, attrlen); | |
2749 | xdr_error: | |
2750 | if (status != 0) | |
2751 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2752 | return status; | |
2753 | } | |
2754 | ||
2755 | static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) | |
2756 | { | |
2757 | uint32_t *p; | |
2758 | uint32_t len; | |
2759 | int status; | |
2760 | ||
2761 | status = decode_op_hdr(xdr, OP_GETFH); | |
2762 | if (status) | |
2763 | return status; | |
2764 | /* Zero handle first to allow comparisons */ | |
2765 | memset(fh, 0, sizeof(*fh)); | |
2766 | ||
2767 | READ_BUF(4); | |
2768 | READ32(len); | |
2769 | if (len > NFS4_FHSIZE) | |
2770 | return -EIO; | |
2771 | fh->size = len; | |
2772 | READ_BUF(len); | |
2773 | COPYMEM(fh->data, len); | |
2774 | return 0; | |
2775 | } | |
2776 | ||
2777 | static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2778 | { | |
2779 | int status; | |
2780 | ||
2781 | status = decode_op_hdr(xdr, OP_LINK); | |
2782 | if (status) | |
2783 | return status; | |
2784 | return decode_change_info(xdr, cinfo); | |
2785 | } | |
2786 | ||
2787 | /* | |
2788 | * We create the owner, so we know a proper owner.id length is 4. | |
2789 | */ | |
2790 | static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied) | |
2791 | { | |
2792 | uint32_t *p; | |
2793 | uint32_t namelen; | |
2794 | ||
2795 | READ_BUF(32); | |
2796 | READ64(denied->offset); | |
2797 | READ64(denied->length); | |
2798 | READ32(denied->type); | |
2799 | READ64(denied->owner.clientid); | |
2800 | READ32(namelen); | |
2801 | READ_BUF(namelen); | |
2802 | if (namelen == 4) | |
2803 | READ32(denied->owner.id); | |
2804 | return -NFS4ERR_DENIED; | |
2805 | } | |
2806 | ||
2807 | static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2808 | { | |
2809 | uint32_t *p; | |
2810 | int status; | |
2811 | ||
2812 | status = decode_op_hdr(xdr, OP_LOCK); | |
2813 | if (status == 0) { | |
2814 | READ_BUF(sizeof(nfs4_stateid)); | |
2815 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2816 | } else if (status == -NFS4ERR_DENIED) | |
2817 | return decode_lock_denied(xdr, &res->u.denied); | |
2818 | return status; | |
2819 | } | |
2820 | ||
2821 | static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2822 | { | |
2823 | int status; | |
2824 | status = decode_op_hdr(xdr, OP_LOCKT); | |
2825 | if (status == -NFS4ERR_DENIED) | |
2826 | return decode_lock_denied(xdr, &res->u.denied); | |
2827 | return status; | |
2828 | } | |
2829 | ||
2830 | static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2831 | { | |
2832 | uint32_t *p; | |
2833 | int status; | |
2834 | ||
2835 | status = decode_op_hdr(xdr, OP_LOCKU); | |
2836 | if (status == 0) { | |
2837 | READ_BUF(sizeof(nfs4_stateid)); | |
2838 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2839 | } | |
2840 | return status; | |
2841 | } | |
2842 | ||
2843 | static int decode_lookup(struct xdr_stream *xdr) | |
2844 | { | |
2845 | return decode_op_hdr(xdr, OP_LOOKUP); | |
2846 | } | |
2847 | ||
2848 | /* This is too sick! */ | |
2849 | static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) | |
2850 | { | |
2851 | uint32_t *p; | |
2852 | uint32_t limit_type, nblocks, blocksize; | |
2853 | ||
2854 | READ_BUF(12); | |
2855 | READ32(limit_type); | |
2856 | switch (limit_type) { | |
2857 | case 1: | |
2858 | READ64(*maxsize); | |
2859 | break; | |
2860 | case 2: | |
2861 | READ32(nblocks); | |
2862 | READ32(blocksize); | |
2863 | *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; | |
2864 | } | |
2865 | return 0; | |
2866 | } | |
2867 | ||
2868 | static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) | |
2869 | { | |
2870 | uint32_t *p; | |
2871 | uint32_t delegation_type; | |
2872 | ||
2873 | READ_BUF(4); | |
2874 | READ32(delegation_type); | |
2875 | if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { | |
2876 | res->delegation_type = 0; | |
2877 | return 0; | |
2878 | } | |
2879 | READ_BUF(20); | |
2880 | COPYMEM(res->delegation.data, sizeof(res->delegation.data)); | |
2881 | READ32(res->do_recall); | |
2882 | switch (delegation_type) { | |
2883 | case NFS4_OPEN_DELEGATE_READ: | |
2884 | res->delegation_type = FMODE_READ; | |
2885 | break; | |
2886 | case NFS4_OPEN_DELEGATE_WRITE: | |
2887 | res->delegation_type = FMODE_WRITE|FMODE_READ; | |
2888 | if (decode_space_limit(xdr, &res->maxsize) < 0) | |
2889 | return -EIO; | |
2890 | } | |
2891 | return decode_ace(xdr, NULL, res->server->nfs4_state); | |
2892 | } | |
2893 | ||
2894 | static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) | |
2895 | { | |
2896 | uint32_t *p; | |
2897 | uint32_t bmlen; | |
2898 | int status; | |
2899 | ||
2900 | status = decode_op_hdr(xdr, OP_OPEN); | |
2901 | if (status) | |
2902 | return status; | |
2903 | READ_BUF(sizeof(res->stateid.data)); | |
2904 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2905 | ||
2906 | decode_change_info(xdr, &res->cinfo); | |
2907 | ||
2908 | READ_BUF(8); | |
2909 | READ32(res->rflags); | |
2910 | READ32(bmlen); | |
2911 | if (bmlen > 10) | |
2912 | goto xdr_error; | |
2913 | ||
2914 | READ_BUF(bmlen << 2); | |
2915 | p += bmlen; | |
2916 | return decode_delegation(xdr, res); | |
2917 | xdr_error: | |
2918 | printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__); | |
2919 | return -EIO; | |
2920 | } | |
2921 | ||
2922 | static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) | |
2923 | { | |
2924 | uint32_t *p; | |
2925 | int status; | |
2926 | ||
2927 | status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); | |
2928 | if (status) | |
2929 | return status; | |
2930 | READ_BUF(sizeof(res->stateid.data)); | |
2931 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2932 | return 0; | |
2933 | } | |
2934 | ||
2935 | static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2936 | { | |
2937 | uint32_t *p; | |
2938 | int status; | |
2939 | ||
2940 | status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); | |
2941 | if (status) | |
2942 | return status; | |
2943 | READ_BUF(sizeof(res->stateid.data)); | |
2944 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2945 | return 0; | |
2946 | } | |
2947 | ||
2948 | static int decode_putfh(struct xdr_stream *xdr) | |
2949 | { | |
2950 | return decode_op_hdr(xdr, OP_PUTFH); | |
2951 | } | |
2952 | ||
2953 | static int decode_putrootfh(struct xdr_stream *xdr) | |
2954 | { | |
2955 | return decode_op_hdr(xdr, OP_PUTROOTFH); | |
2956 | } | |
2957 | ||
2958 | static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) | |
2959 | { | |
2960 | struct kvec *iov = req->rq_rcv_buf.head; | |
2961 | uint32_t *p; | |
2962 | uint32_t count, eof, recvd, hdrlen; | |
2963 | int status; | |
2964 | ||
2965 | status = decode_op_hdr(xdr, OP_READ); | |
2966 | if (status) | |
2967 | return status; | |
2968 | READ_BUF(8); | |
2969 | READ32(eof); | |
2970 | READ32(count); | |
2971 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
2972 | recvd = req->rq_rcv_buf.len - hdrlen; | |
2973 | if (count > recvd) { | |
2974 | printk(KERN_WARNING "NFS: server cheating in read reply: " | |
2975 | "count %u > recvd %u\n", count, recvd); | |
2976 | count = recvd; | |
2977 | eof = 0; | |
2978 | } | |
2979 | xdr_read_pages(xdr, count); | |
2980 | res->eof = eof; | |
2981 | res->count = count; | |
2982 | return 0; | |
2983 | } | |
2984 | ||
2985 | static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) | |
2986 | { | |
2987 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
2988 | struct page *page = *rcvbuf->pages; | |
2989 | struct kvec *iov = rcvbuf->head; | |
2990 | unsigned int nr, pglen = rcvbuf->page_len; | |
2991 | uint32_t *end, *entry, *p, *kaddr; | |
2992 | uint32_t len, attrlen; | |
2993 | int hdrlen, recvd, status; | |
2994 | ||
2995 | status = decode_op_hdr(xdr, OP_READDIR); | |
2996 | if (status) | |
2997 | return status; | |
2998 | READ_BUF(8); | |
2999 | COPYMEM(readdir->verifier.data, 8); | |
3000 | ||
3001 | hdrlen = (char *) p - (char *) iov->iov_base; | |
3002 | recvd = rcvbuf->len - hdrlen; | |
3003 | if (pglen > recvd) | |
3004 | pglen = recvd; | |
3005 | xdr_read_pages(xdr, pglen); | |
3006 | ||
3007 | BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE); | |
3008 | kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0); | |
3009 | end = (uint32_t *) ((char *)p + pglen + readdir->pgbase); | |
3010 | entry = p; | |
3011 | for (nr = 0; *p++; nr++) { | |
3012 | if (p + 3 > end) | |
3013 | goto short_pkt; | |
3014 | p += 2; /* cookie */ | |
3015 | len = ntohl(*p++); /* filename length */ | |
3016 | if (len > NFS4_MAXNAMLEN) { | |
3017 | printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len); | |
3018 | goto err_unmap; | |
3019 | } | |
3020 | p += XDR_QUADLEN(len); | |
3021 | if (p + 1 > end) | |
3022 | goto short_pkt; | |
3023 | len = ntohl(*p++); /* bitmap length */ | |
3024 | p += len; | |
3025 | if (p + 1 > end) | |
3026 | goto short_pkt; | |
3027 | attrlen = XDR_QUADLEN(ntohl(*p++)); | |
3028 | p += attrlen; /* attributes */ | |
3029 | if (p + 2 > end) | |
3030 | goto short_pkt; | |
3031 | entry = p; | |
3032 | } | |
3033 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
3034 | goto short_pkt; | |
3035 | out: | |
3036 | kunmap_atomic(kaddr, KM_USER0); | |
3037 | return 0; | |
3038 | short_pkt: | |
3039 | entry[0] = entry[1] = 0; | |
3040 | /* truncate listing ? */ | |
3041 | if (!nr) { | |
3042 | printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); | |
3043 | entry[1] = 1; | |
3044 | } | |
3045 | goto out; | |
3046 | err_unmap: | |
3047 | kunmap_atomic(kaddr, KM_USER0); | |
3048 | return -errno_NFSERR_IO; | |
3049 | } | |
3050 | ||
3051 | static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) | |
3052 | { | |
3053 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
3054 | struct kvec *iov = rcvbuf->head; | |
3055 | int hdrlen, len, recvd; | |
3056 | uint32_t *p; | |
3057 | char *kaddr; | |
3058 | int status; | |
3059 | ||
3060 | status = decode_op_hdr(xdr, OP_READLINK); | |
3061 | if (status) | |
3062 | return status; | |
3063 | ||
3064 | /* Convert length of symlink */ | |
3065 | READ_BUF(4); | |
3066 | READ32(len); | |
3067 | if (len >= rcvbuf->page_len || len <= 0) { | |
3068 | dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); | |
3069 | return -ENAMETOOLONG; | |
3070 | } | |
3071 | hdrlen = (char *) xdr->p - (char *) iov->iov_base; | |
3072 | recvd = req->rq_rcv_buf.len - hdrlen; | |
3073 | if (recvd < len) { | |
3074 | printk(KERN_WARNING "NFS: server cheating in readlink reply: " | |
3075 | "count %u > recvd %u\n", len, recvd); | |
3076 | return -EIO; | |
3077 | } | |
3078 | xdr_read_pages(xdr, len); | |
3079 | /* | |
3080 | * The XDR encode routine has set things up so that | |
3081 | * the link text will be copied directly into the | |
3082 | * buffer. We just have to do overflow-checking, | |
3083 | * and and null-terminate the text (the VFS expects | |
3084 | * null-termination). | |
3085 | */ | |
3086 | kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
3087 | kaddr[len+rcvbuf->page_base] = '\0'; | |
3088 | kunmap_atomic(kaddr, KM_USER0); | |
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
3093 | { | |
3094 | int status; | |
3095 | ||
3096 | status = decode_op_hdr(xdr, OP_REMOVE); | |
3097 | if (status) | |
3098 | goto out; | |
3099 | status = decode_change_info(xdr, cinfo); | |
3100 | out: | |
3101 | return status; | |
3102 | } | |
3103 | ||
3104 | static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, | |
3105 | struct nfs4_change_info *new_cinfo) | |
3106 | { | |
3107 | int status; | |
3108 | ||
3109 | status = decode_op_hdr(xdr, OP_RENAME); | |
3110 | if (status) | |
3111 | goto out; | |
3112 | if ((status = decode_change_info(xdr, old_cinfo))) | |
3113 | goto out; | |
3114 | status = decode_change_info(xdr, new_cinfo); | |
3115 | out: | |
3116 | return status; | |
3117 | } | |
3118 | ||
3119 | static int decode_renew(struct xdr_stream *xdr) | |
3120 | { | |
3121 | return decode_op_hdr(xdr, OP_RENEW); | |
3122 | } | |
3123 | ||
3124 | static int | |
3125 | decode_savefh(struct xdr_stream *xdr) | |
3126 | { | |
3127 | return decode_op_hdr(xdr, OP_SAVEFH); | |
3128 | } | |
3129 | ||
3130 | static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res) | |
3131 | { | |
3132 | uint32_t *p; | |
3133 | uint32_t bmlen; | |
3134 | int status; | |
3135 | ||
3136 | ||
3137 | status = decode_op_hdr(xdr, OP_SETATTR); | |
3138 | if (status) | |
3139 | return status; | |
3140 | READ_BUF(4); | |
3141 | READ32(bmlen); | |
3142 | READ_BUF(bmlen << 2); | |
3143 | return 0; | |
3144 | } | |
3145 | ||
3146 | static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp) | |
3147 | { | |
3148 | uint32_t *p; | |
3149 | uint32_t opnum; | |
3150 | int32_t nfserr; | |
3151 | ||
3152 | READ_BUF(8); | |
3153 | READ32(opnum); | |
3154 | if (opnum != OP_SETCLIENTID) { | |
3155 | printk(KERN_NOTICE | |
3156 | "nfs4_decode_setclientid: Server returned operation" | |
3157 | " %d\n", opnum); | |
3158 | return -EIO; | |
3159 | } | |
3160 | READ32(nfserr); | |
3161 | if (nfserr == NFS_OK) { | |
3162 | READ_BUF(8 + sizeof(clp->cl_confirm.data)); | |
3163 | READ64(clp->cl_clientid); | |
3164 | COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data)); | |
3165 | } else if (nfserr == NFSERR_CLID_INUSE) { | |
3166 | uint32_t len; | |
3167 | ||
3168 | /* skip netid string */ | |
3169 | READ_BUF(4); | |
3170 | READ32(len); | |
3171 | READ_BUF(len); | |
3172 | ||
3173 | /* skip uaddr string */ | |
3174 | READ_BUF(4); | |
3175 | READ32(len); | |
3176 | READ_BUF(len); | |
3177 | return -NFSERR_CLID_INUSE; | |
3178 | } else | |
3179 | return -nfs_stat_to_errno(nfserr); | |
3180 | ||
3181 | return 0; | |
3182 | } | |
3183 | ||
3184 | static int decode_setclientid_confirm(struct xdr_stream *xdr) | |
3185 | { | |
3186 | return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); | |
3187 | } | |
3188 | ||
3189 | static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) | |
3190 | { | |
3191 | uint32_t *p; | |
3192 | int status; | |
3193 | ||
3194 | status = decode_op_hdr(xdr, OP_WRITE); | |
3195 | if (status) | |
3196 | return status; | |
3197 | ||
3198 | READ_BUF(16); | |
3199 | READ32(res->count); | |
3200 | READ32(res->verf->committed); | |
3201 | COPYMEM(res->verf->verifier, 8); | |
3202 | return 0; | |
3203 | } | |
3204 | ||
3205 | static int decode_delegreturn(struct xdr_stream *xdr) | |
3206 | { | |
3207 | return decode_op_hdr(xdr, OP_DELEGRETURN); | |
3208 | } | |
3209 | ||
3210 | /* | |
3211 | * Decode OPEN_DOWNGRADE response | |
3212 | */ | |
3213 | static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3214 | { | |
3215 | struct xdr_stream xdr; | |
3216 | struct compound_hdr hdr; | |
3217 | int status; | |
3218 | ||
3219 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3220 | status = decode_compound_hdr(&xdr, &hdr); | |
3221 | if (status) | |
3222 | goto out; | |
3223 | status = decode_putfh(&xdr); | |
3224 | if (status) | |
3225 | goto out; | |
3226 | status = decode_open_downgrade(&xdr, res); | |
3227 | out: | |
3228 | return status; | |
3229 | } | |
3230 | ||
3231 | /* | |
3232 | * END OF "GENERIC" DECODE ROUTINES. | |
3233 | */ | |
3234 | ||
3235 | /* | |
3236 | * Decode ACCESS response | |
3237 | */ | |
3238 | static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res) | |
3239 | { | |
3240 | struct xdr_stream xdr; | |
3241 | struct compound_hdr hdr; | |
3242 | int status; | |
3243 | ||
3244 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3245 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3246 | goto out; | |
3247 | if ((status = decode_putfh(&xdr)) == 0) | |
3248 | status = decode_access(&xdr, res); | |
3249 | out: | |
3250 | return status; | |
3251 | } | |
3252 | ||
3253 | /* | |
3254 | * Decode LOOKUP response | |
3255 | */ | |
3256 | static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3257 | { | |
3258 | struct xdr_stream xdr; | |
3259 | struct compound_hdr hdr; | |
3260 | int status; | |
3261 | ||
3262 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3263 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3264 | goto out; | |
3265 | if ((status = decode_putfh(&xdr)) != 0) | |
3266 | goto out; | |
3267 | if ((status = decode_lookup(&xdr)) != 0) | |
3268 | goto out; | |
3269 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3270 | goto out; | |
3271 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3272 | out: | |
3273 | return status; | |
3274 | } | |
3275 | ||
3276 | /* | |
3277 | * Decode LOOKUP_ROOT response | |
3278 | */ | |
3279 | static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3280 | { | |
3281 | struct xdr_stream xdr; | |
3282 | struct compound_hdr hdr; | |
3283 | int status; | |
3284 | ||
3285 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3286 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3287 | goto out; | |
3288 | if ((status = decode_putrootfh(&xdr)) != 0) | |
3289 | goto out; | |
3290 | if ((status = decode_getfh(&xdr, res->fh)) == 0) | |
3291 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3292 | out: | |
3293 | return status; | |
3294 | } | |
3295 | ||
3296 | /* | |
3297 | * Decode REMOVE response | |
3298 | */ | |
3299 | static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3300 | { | |
3301 | struct xdr_stream xdr; | |
3302 | struct compound_hdr hdr; | |
3303 | int status; | |
3304 | ||
3305 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3306 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3307 | goto out; | |
3308 | if ((status = decode_putfh(&xdr)) == 0) | |
3309 | status = decode_remove(&xdr, cinfo); | |
3310 | out: | |
3311 | return status; | |
3312 | } | |
3313 | ||
3314 | /* | |
3315 | * Decode RENAME response | |
3316 | */ | |
3317 | static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res) | |
3318 | { | |
3319 | struct xdr_stream xdr; | |
3320 | struct compound_hdr hdr; | |
3321 | int status; | |
3322 | ||
3323 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3324 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3325 | goto out; | |
3326 | if ((status = decode_putfh(&xdr)) != 0) | |
3327 | goto out; | |
3328 | if ((status = decode_savefh(&xdr)) != 0) | |
3329 | goto out; | |
3330 | if ((status = decode_putfh(&xdr)) != 0) | |
3331 | goto out; | |
3332 | status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo); | |
3333 | out: | |
3334 | return status; | |
3335 | } | |
3336 | ||
3337 | /* | |
3338 | * Decode LINK response | |
3339 | */ | |
3340 | static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3341 | { | |
3342 | struct xdr_stream xdr; | |
3343 | struct compound_hdr hdr; | |
3344 | int status; | |
3345 | ||
3346 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3347 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3348 | goto out; | |
3349 | if ((status = decode_putfh(&xdr)) != 0) | |
3350 | goto out; | |
3351 | if ((status = decode_savefh(&xdr)) != 0) | |
3352 | goto out; | |
3353 | if ((status = decode_putfh(&xdr)) != 0) | |
3354 | goto out; | |
3355 | status = decode_link(&xdr, cinfo); | |
3356 | out: | |
3357 | return status; | |
3358 | } | |
3359 | ||
3360 | /* | |
3361 | * Decode CREATE response | |
3362 | */ | |
3363 | static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3364 | { | |
3365 | struct xdr_stream xdr; | |
3366 | struct compound_hdr hdr; | |
3367 | int status; | |
3368 | ||
3369 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3370 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3371 | goto out; | |
3372 | if ((status = decode_putfh(&xdr)) != 0) | |
3373 | goto out; | |
3374 | if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) | |
3375 | goto out; | |
3376 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3377 | goto out; | |
3378 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3379 | if (status == NFS4ERR_DELAY) | |
3380 | status = 0; | |
3381 | out: | |
3382 | return status; | |
3383 | } | |
3384 | ||
3385 | /* | |
3386 | * Decode SYMLINK response | |
3387 | */ | |
3388 | static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3389 | { | |
3390 | return nfs4_xdr_dec_create(rqstp, p, res); | |
3391 | } | |
3392 | ||
3393 | /* | |
3394 | * Decode GETATTR response | |
3395 | */ | |
3396 | static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res) | |
3397 | { | |
3398 | struct xdr_stream xdr; | |
3399 | struct compound_hdr hdr; | |
3400 | int status; | |
3401 | ||
3402 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3403 | status = decode_compound_hdr(&xdr, &hdr); | |
3404 | if (status) | |
3405 | goto out; | |
3406 | status = decode_putfh(&xdr); | |
3407 | if (status) | |
3408 | goto out; | |
3409 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3410 | out: | |
3411 | return status; | |
3412 | ||
3413 | } | |
3414 | ||
3415 | ||
3416 | /* | |
3417 | * Decode CLOSE response | |
3418 | */ | |
3419 | static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3420 | { | |
3421 | struct xdr_stream xdr; | |
3422 | struct compound_hdr hdr; | |
3423 | int status; | |
3424 | ||
3425 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3426 | status = decode_compound_hdr(&xdr, &hdr); | |
3427 | if (status) | |
3428 | goto out; | |
3429 | status = decode_putfh(&xdr); | |
3430 | if (status) | |
3431 | goto out; | |
3432 | status = decode_close(&xdr, res); | |
3433 | out: | |
3434 | return status; | |
3435 | } | |
3436 | ||
3437 | /* | |
3438 | * Decode OPEN response | |
3439 | */ | |
3440 | static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3441 | { | |
3442 | struct xdr_stream xdr; | |
3443 | struct compound_hdr hdr; | |
3444 | int status; | |
3445 | ||
3446 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3447 | status = decode_compound_hdr(&xdr, &hdr); | |
3448 | if (status) | |
3449 | goto out; | |
3450 | status = decode_putfh(&xdr); | |
3451 | if (status) | |
3452 | goto out; | |
3453 | status = decode_open(&xdr, res); | |
3454 | if (status) | |
3455 | goto out; | |
3456 | status = decode_getfh(&xdr, &res->fh); | |
3457 | if (status) | |
3458 | goto out; | |
3459 | status = decode_getfattr(&xdr, res->f_attr, res->server); | |
3460 | if (status == NFS4ERR_DELAY) | |
3461 | status = 0; | |
3462 | out: | |
3463 | return status; | |
3464 | } | |
3465 | ||
3466 | /* | |
3467 | * Decode OPEN_CONFIRM response | |
3468 | */ | |
3469 | static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res) | |
3470 | { | |
3471 | struct xdr_stream xdr; | |
3472 | struct compound_hdr hdr; | |
3473 | int status; | |
3474 | ||
3475 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3476 | status = decode_compound_hdr(&xdr, &hdr); | |
3477 | if (status) | |
3478 | goto out; | |
3479 | status = decode_putfh(&xdr); | |
3480 | if (status) | |
3481 | goto out; | |
3482 | status = decode_open_confirm(&xdr, res); | |
3483 | out: | |
3484 | return status; | |
3485 | } | |
3486 | ||
3487 | /* | |
3488 | * Decode OPEN response | |
3489 | */ | |
3490 | static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3491 | { | |
3492 | struct xdr_stream xdr; | |
3493 | struct compound_hdr hdr; | |
3494 | int status; | |
3495 | ||
3496 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3497 | status = decode_compound_hdr(&xdr, &hdr); | |
3498 | if (status) | |
3499 | goto out; | |
3500 | status = decode_putfh(&xdr); | |
3501 | if (status) | |
3502 | goto out; | |
3503 | status = decode_open(&xdr, res); | |
3504 | out: | |
3505 | return status; | |
3506 | } | |
3507 | ||
3508 | /* | |
3509 | * Decode SETATTR response | |
3510 | */ | |
3511 | static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res) | |
3512 | { | |
3513 | struct xdr_stream xdr; | |
3514 | struct compound_hdr hdr; | |
3515 | int status; | |
3516 | ||
3517 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3518 | status = decode_compound_hdr(&xdr, &hdr); | |
3519 | if (status) | |
3520 | goto out; | |
3521 | status = decode_putfh(&xdr); | |
3522 | if (status) | |
3523 | goto out; | |
3524 | status = decode_setattr(&xdr, res); | |
3525 | if (status) | |
3526 | goto out; | |
3527 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3528 | if (status == NFS4ERR_DELAY) | |
3529 | status = 0; | |
3530 | out: | |
3531 | return status; | |
3532 | } | |
3533 | ||
3534 | /* | |
3535 | * Decode LOCK response | |
3536 | */ | |
3537 | static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3538 | { | |
3539 | struct xdr_stream xdr; | |
3540 | struct compound_hdr hdr; | |
3541 | int status; | |
3542 | ||
3543 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3544 | status = decode_compound_hdr(&xdr, &hdr); | |
3545 | if (status) | |
3546 | goto out; | |
3547 | status = decode_putfh(&xdr); | |
3548 | if (status) | |
3549 | goto out; | |
3550 | status = decode_lock(&xdr, res); | |
3551 | out: | |
3552 | return status; | |
3553 | } | |
3554 | ||
3555 | /* | |
3556 | * Decode LOCKT response | |
3557 | */ | |
3558 | static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3559 | { | |
3560 | struct xdr_stream xdr; | |
3561 | struct compound_hdr hdr; | |
3562 | int status; | |
3563 | ||
3564 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3565 | status = decode_compound_hdr(&xdr, &hdr); | |
3566 | if (status) | |
3567 | goto out; | |
3568 | status = decode_putfh(&xdr); | |
3569 | if (status) | |
3570 | goto out; | |
3571 | status = decode_lockt(&xdr, res); | |
3572 | out: | |
3573 | return status; | |
3574 | } | |
3575 | ||
3576 | /* | |
3577 | * Decode LOCKU response | |
3578 | */ | |
3579 | static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3580 | { | |
3581 | struct xdr_stream xdr; | |
3582 | struct compound_hdr hdr; | |
3583 | int status; | |
3584 | ||
3585 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3586 | status = decode_compound_hdr(&xdr, &hdr); | |
3587 | if (status) | |
3588 | goto out; | |
3589 | status = decode_putfh(&xdr); | |
3590 | if (status) | |
3591 | goto out; | |
3592 | status = decode_locku(&xdr, res); | |
3593 | out: | |
3594 | return status; | |
3595 | } | |
3596 | ||
3597 | /* | |
3598 | * Decode READLINK response | |
3599 | */ | |
3600 | static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res) | |
3601 | { | |
3602 | struct xdr_stream xdr; | |
3603 | struct compound_hdr hdr; | |
3604 | int status; | |
3605 | ||
3606 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3607 | status = decode_compound_hdr(&xdr, &hdr); | |
3608 | if (status) | |
3609 | goto out; | |
3610 | status = decode_putfh(&xdr); | |
3611 | if (status) | |
3612 | goto out; | |
3613 | status = decode_readlink(&xdr, rqstp); | |
3614 | out: | |
3615 | return status; | |
3616 | } | |
3617 | ||
3618 | /* | |
3619 | * Decode READDIR response | |
3620 | */ | |
3621 | static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res) | |
3622 | { | |
3623 | struct xdr_stream xdr; | |
3624 | struct compound_hdr hdr; | |
3625 | int status; | |
3626 | ||
3627 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3628 | status = decode_compound_hdr(&xdr, &hdr); | |
3629 | if (status) | |
3630 | goto out; | |
3631 | status = decode_putfh(&xdr); | |
3632 | if (status) | |
3633 | goto out; | |
3634 | status = decode_readdir(&xdr, rqstp, res); | |
3635 | out: | |
3636 | return status; | |
3637 | } | |
3638 | ||
3639 | /* | |
3640 | * Decode Read response | |
3641 | */ | |
3642 | static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res) | |
3643 | { | |
3644 | struct xdr_stream xdr; | |
3645 | struct compound_hdr hdr; | |
3646 | int status; | |
3647 | ||
3648 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3649 | status = decode_compound_hdr(&xdr, &hdr); | |
3650 | if (status) | |
3651 | goto out; | |
3652 | status = decode_putfh(&xdr); | |
3653 | if (status) | |
3654 | goto out; | |
3655 | status = decode_read(&xdr, rqstp, res); | |
3656 | if (!status) | |
3657 | status = res->count; | |
3658 | out: | |
3659 | return status; | |
3660 | } | |
3661 | ||
3662 | /* | |
3663 | * Decode WRITE response | |
3664 | */ | |
3665 | static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3666 | { | |
3667 | struct xdr_stream xdr; | |
3668 | struct compound_hdr hdr; | |
3669 | int status; | |
3670 | ||
3671 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3672 | status = decode_compound_hdr(&xdr, &hdr); | |
3673 | if (status) | |
3674 | goto out; | |
3675 | status = decode_putfh(&xdr); | |
3676 | if (status) | |
3677 | goto out; | |
3678 | status = decode_write(&xdr, res); | |
3679 | if (!status) | |
3680 | status = res->count; | |
3681 | out: | |
3682 | return status; | |
3683 | } | |
3684 | ||
3685 | /* | |
3686 | * Decode COMMIT response | |
3687 | */ | |
3688 | static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3689 | { | |
3690 | struct xdr_stream xdr; | |
3691 | struct compound_hdr hdr; | |
3692 | int status; | |
3693 | ||
3694 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3695 | status = decode_compound_hdr(&xdr, &hdr); | |
3696 | if (status) | |
3697 | goto out; | |
3698 | status = decode_putfh(&xdr); | |
3699 | if (status) | |
3700 | goto out; | |
3701 | status = decode_commit(&xdr, res); | |
3702 | out: | |
3703 | return status; | |
3704 | } | |
3705 | ||
3706 | /* | |
3707 | * FSINFO request | |
3708 | */ | |
3709 | static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3710 | { | |
3711 | struct xdr_stream xdr; | |
3712 | struct compound_hdr hdr; | |
3713 | int status; | |
3714 | ||
3715 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3716 | status = decode_compound_hdr(&xdr, &hdr); | |
3717 | if (!status) | |
3718 | status = decode_putfh(&xdr); | |
3719 | if (!status) | |
3720 | status = decode_fsinfo(&xdr, fsinfo); | |
3721 | if (!status) | |
3722 | status = -nfs_stat_to_errno(hdr.status); | |
3723 | return status; | |
3724 | } | |
3725 | ||
3726 | /* | |
3727 | * PATHCONF request | |
3728 | */ | |
3729 | static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf) | |
3730 | { | |
3731 | struct xdr_stream xdr; | |
3732 | struct compound_hdr hdr; | |
3733 | int status; | |
3734 | ||
3735 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3736 | status = decode_compound_hdr(&xdr, &hdr); | |
3737 | if (!status) | |
3738 | status = decode_putfh(&xdr); | |
3739 | if (!status) | |
3740 | status = decode_pathconf(&xdr, pathconf); | |
3741 | return status; | |
3742 | } | |
3743 | ||
3744 | /* | |
3745 | * STATFS request | |
3746 | */ | |
3747 | static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat) | |
3748 | { | |
3749 | struct xdr_stream xdr; | |
3750 | struct compound_hdr hdr; | |
3751 | int status; | |
3752 | ||
3753 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3754 | status = decode_compound_hdr(&xdr, &hdr); | |
3755 | if (!status) | |
3756 | status = decode_putfh(&xdr); | |
3757 | if (!status) | |
3758 | status = decode_statfs(&xdr, fsstat); | |
3759 | return status; | |
3760 | } | |
3761 | ||
3762 | /* | |
3763 | * GETATTR_BITMAP request | |
3764 | */ | |
3765 | static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res) | |
3766 | { | |
3767 | struct xdr_stream xdr; | |
3768 | struct compound_hdr hdr; | |
3769 | int status; | |
3770 | ||
3771 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3772 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3773 | goto out; | |
3774 | if ((status = decode_putfh(&xdr)) != 0) | |
3775 | goto out; | |
3776 | status = decode_server_caps(&xdr, res); | |
3777 | out: | |
3778 | return status; | |
3779 | } | |
3780 | ||
3781 | /* | |
3782 | * Decode RENEW response | |
3783 | */ | |
3784 | static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3785 | { | |
3786 | struct xdr_stream xdr; | |
3787 | struct compound_hdr hdr; | |
3788 | int status; | |
3789 | ||
3790 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3791 | status = decode_compound_hdr(&xdr, &hdr); | |
3792 | if (!status) | |
3793 | status = decode_renew(&xdr); | |
3794 | return status; | |
3795 | } | |
3796 | ||
3797 | /* | |
3798 | * a SETCLIENTID request | |
3799 | */ | |
3800 | static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p, | |
3801 | struct nfs4_client *clp) | |
3802 | { | |
3803 | struct xdr_stream xdr; | |
3804 | struct compound_hdr hdr; | |
3805 | int status; | |
3806 | ||
3807 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3808 | status = decode_compound_hdr(&xdr, &hdr); | |
3809 | if (!status) | |
3810 | status = decode_setclientid(&xdr, clp); | |
3811 | if (!status) | |
3812 | status = -nfs_stat_to_errno(hdr.status); | |
3813 | return status; | |
3814 | } | |
3815 | ||
3816 | /* | |
3817 | * a SETCLIENTID_CONFIRM request | |
3818 | */ | |
3819 | static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3820 | { | |
3821 | struct xdr_stream xdr; | |
3822 | struct compound_hdr hdr; | |
3823 | int status; | |
3824 | ||
3825 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3826 | status = decode_compound_hdr(&xdr, &hdr); | |
3827 | if (!status) | |
3828 | status = decode_setclientid_confirm(&xdr); | |
3829 | if (!status) | |
3830 | status = decode_putrootfh(&xdr); | |
3831 | if (!status) | |
3832 | status = decode_fsinfo(&xdr, fsinfo); | |
3833 | if (!status) | |
3834 | status = -nfs_stat_to_errno(hdr.status); | |
3835 | return status; | |
3836 | } | |
3837 | ||
3838 | /* | |
3839 | * DELEGRETURN request | |
3840 | */ | |
3841 | static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3842 | { | |
3843 | struct xdr_stream xdr; | |
3844 | struct compound_hdr hdr; | |
3845 | int status; | |
3846 | ||
3847 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3848 | status = decode_compound_hdr(&xdr, &hdr); | |
3849 | if (status == 0) { | |
3850 | status = decode_putfh(&xdr); | |
3851 | if (status == 0) | |
3852 | status = decode_delegreturn(&xdr); | |
3853 | } | |
3854 | return status; | |
3855 | } | |
3856 | ||
3857 | uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus) | |
3858 | { | |
3859 | uint32_t bitmap[2] = {0}; | |
3860 | uint32_t len; | |
3861 | ||
3862 | if (!*p++) { | |
3863 | if (!*p) | |
3864 | return ERR_PTR(-EAGAIN); | |
3865 | entry->eof = 1; | |
3866 | return ERR_PTR(-EBADCOOKIE); | |
3867 | } | |
3868 | ||
3869 | entry->prev_cookie = entry->cookie; | |
3870 | p = xdr_decode_hyper(p, &entry->cookie); | |
3871 | entry->len = ntohl(*p++); | |
3872 | entry->name = (const char *) p; | |
3873 | p += XDR_QUADLEN(entry->len); | |
3874 | ||
3875 | /* | |
3876 | * In case the server doesn't return an inode number, | |
3877 | * we fake one here. (We don't use inode number 0, | |
3878 | * since glibc seems to choke on it...) | |
3879 | */ | |
3880 | entry->ino = 1; | |
3881 | ||
3882 | len = ntohl(*p++); /* bitmap length */ | |
3883 | if (len-- > 0) { | |
3884 | bitmap[0] = ntohl(*p++); | |
3885 | if (len-- > 0) { | |
3886 | bitmap[1] = ntohl(*p++); | |
3887 | p += len; | |
3888 | } | |
3889 | } | |
3890 | len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */ | |
3891 | if (len > 0) { | |
3892 | if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID) | |
3893 | xdr_decode_hyper(p, &entry->ino); | |
3894 | else if (bitmap[0] == FATTR4_WORD0_FILEID) | |
3895 | xdr_decode_hyper(p, &entry->ino); | |
3896 | p += len; | |
3897 | } | |
3898 | ||
3899 | entry->eof = !p[0] && p[1]; | |
3900 | return p; | |
3901 | } | |
3902 | ||
3903 | /* | |
3904 | * We need to translate between nfs status return values and | |
3905 | * the local errno values which may not be the same. | |
3906 | */ | |
3907 | static struct { | |
3908 | int stat; | |
3909 | int errno; | |
3910 | } nfs_errtbl[] = { | |
3911 | { NFS4_OK, 0 }, | |
3912 | { NFS4ERR_PERM, EPERM }, | |
3913 | { NFS4ERR_NOENT, ENOENT }, | |
3914 | { NFS4ERR_IO, errno_NFSERR_IO }, | |
3915 | { NFS4ERR_NXIO, ENXIO }, | |
3916 | { NFS4ERR_ACCESS, EACCES }, | |
3917 | { NFS4ERR_EXIST, EEXIST }, | |
3918 | { NFS4ERR_XDEV, EXDEV }, | |
3919 | { NFS4ERR_NOTDIR, ENOTDIR }, | |
3920 | { NFS4ERR_ISDIR, EISDIR }, | |
3921 | { NFS4ERR_INVAL, EINVAL }, | |
3922 | { NFS4ERR_FBIG, EFBIG }, | |
3923 | { NFS4ERR_NOSPC, ENOSPC }, | |
3924 | { NFS4ERR_ROFS, EROFS }, | |
3925 | { NFS4ERR_MLINK, EMLINK }, | |
3926 | { NFS4ERR_NAMETOOLONG, ENAMETOOLONG }, | |
3927 | { NFS4ERR_NOTEMPTY, ENOTEMPTY }, | |
3928 | { NFS4ERR_DQUOT, EDQUOT }, | |
3929 | { NFS4ERR_STALE, ESTALE }, | |
3930 | { NFS4ERR_BADHANDLE, EBADHANDLE }, | |
3931 | { NFS4ERR_BAD_COOKIE, EBADCOOKIE }, | |
3932 | { NFS4ERR_NOTSUPP, ENOTSUPP }, | |
3933 | { NFS4ERR_TOOSMALL, ETOOSMALL }, | |
3934 | { NFS4ERR_SERVERFAULT, ESERVERFAULT }, | |
3935 | { NFS4ERR_BADTYPE, EBADTYPE }, | |
3936 | { NFS4ERR_LOCKED, EAGAIN }, | |
3937 | { NFS4ERR_RESOURCE, EREMOTEIO }, | |
3938 | { NFS4ERR_SYMLINK, ELOOP }, | |
3939 | { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP }, | |
3940 | { NFS4ERR_DEADLOCK, EDEADLK }, | |
3941 | { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs | |
3942 | * to be handled by a | |
3943 | * middle-layer. | |
3944 | */ | |
3945 | { -1, EIO } | |
3946 | }; | |
3947 | ||
3948 | /* | |
3949 | * Convert an NFS error code to a local one. | |
3950 | * This one is used jointly by NFSv2 and NFSv3. | |
3951 | */ | |
3952 | static int | |
3953 | nfs_stat_to_errno(int stat) | |
3954 | { | |
3955 | int i; | |
3956 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { | |
3957 | if (nfs_errtbl[i].stat == stat) | |
3958 | return nfs_errtbl[i].errno; | |
3959 | } | |
3960 | if (stat <= 10000 || stat > 10100) { | |
3961 | /* The server is looney tunes. */ | |
3962 | return ESERVERFAULT; | |
3963 | } | |
3964 | /* If we cannot translate the error, the recovery routines should | |
3965 | * handle it. | |
3966 | * Note: remaining NFSv4 error codes have values > 10000, so should | |
3967 | * not conflict with native Linux error codes. | |
3968 | */ | |
3969 | return stat; | |
3970 | } | |
3971 | ||
3972 | #ifndef MAX | |
3973 | # define MAX(a, b) (((a) > (b))? (a) : (b)) | |
3974 | #endif | |
3975 | ||
3976 | #define PROC(proc, argtype, restype) \ | |
3977 | [NFSPROC4_CLNT_##proc] = { \ | |
3978 | .p_proc = NFSPROC4_COMPOUND, \ | |
3979 | .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ | |
3980 | .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ | |
3981 | .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \ | |
3982 | } | |
3983 | ||
3984 | struct rpc_procinfo nfs4_procedures[] = { | |
3985 | PROC(READ, enc_read, dec_read), | |
3986 | PROC(WRITE, enc_write, dec_write), | |
3987 | PROC(COMMIT, enc_commit, dec_commit), | |
3988 | PROC(OPEN, enc_open, dec_open), | |
3989 | PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), | |
3990 | PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), | |
3991 | PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), | |
3992 | PROC(CLOSE, enc_close, dec_close), | |
3993 | PROC(SETATTR, enc_setattr, dec_setattr), | |
3994 | PROC(FSINFO, enc_fsinfo, dec_fsinfo), | |
3995 | PROC(RENEW, enc_renew, dec_renew), | |
3996 | PROC(SETCLIENTID, enc_setclientid, dec_setclientid), | |
3997 | PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), | |
3998 | PROC(LOCK, enc_lock, dec_lock), | |
3999 | PROC(LOCKT, enc_lockt, dec_lockt), | |
4000 | PROC(LOCKU, enc_locku, dec_locku), | |
4001 | PROC(ACCESS, enc_access, dec_access), | |
4002 | PROC(GETATTR, enc_getattr, dec_getattr), | |
4003 | PROC(LOOKUP, enc_lookup, dec_lookup), | |
4004 | PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), | |
4005 | PROC(REMOVE, enc_remove, dec_remove), | |
4006 | PROC(RENAME, enc_rename, dec_rename), | |
4007 | PROC(LINK, enc_link, dec_link), | |
4008 | PROC(SYMLINK, enc_symlink, dec_symlink), | |
4009 | PROC(CREATE, enc_create, dec_create), | |
4010 | PROC(PATHCONF, enc_pathconf, dec_pathconf), | |
4011 | PROC(STATFS, enc_statfs, dec_statfs), | |
4012 | PROC(READLINK, enc_readlink, dec_readlink), | |
4013 | PROC(READDIR, enc_readdir, dec_readdir), | |
4014 | PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), | |
4015 | PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), | |
4016 | }; | |
4017 | ||
4018 | struct rpc_version nfs_version4 = { | |
4019 | .number = 4, | |
4020 | .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]), | |
4021 | .procs = nfs4_procedures | |
4022 | }; | |
4023 | ||
4024 | /* | |
4025 | * Local variables: | |
4026 | * c-basic-offset: 8 | |
4027 | * End: | |
4028 | */ |