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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> | |
54 | ||
55 | #define NFSDBG_FACILITY NFSDBG_XDR | |
56 | ||
57 | /* Mapping from NFS error code to "errno" error code. */ | |
58 | #define errno_NFSERR_IO EIO | |
59 | ||
60 | static int nfs_stat_to_errno(int); | |
61 | ||
62 | /* NFSv4 COMPOUND tags are only wanted for debugging purposes */ | |
63 | #ifdef DEBUG | |
64 | #define NFS4_MAXTAGLEN 20 | |
65 | #else | |
66 | #define NFS4_MAXTAGLEN 0 | |
67 | #endif | |
68 | ||
69 | /* lock,open owner id: | |
70 | * we currently use size 1 (u32) out of (NFS4_OPAQUE_LIMIT >> 2) | |
71 | */ | |
72 | #define owner_id_maxsz (1 + 1) | |
73 | #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) | |
74 | #define compound_decode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) | |
75 | #define op_encode_hdr_maxsz (1) | |
76 | #define op_decode_hdr_maxsz (2) | |
77 | #define encode_putfh_maxsz (op_encode_hdr_maxsz + 1 + \ | |
78 | (NFS4_FHSIZE >> 2)) | |
79 | #define decode_putfh_maxsz (op_decode_hdr_maxsz) | |
80 | #define encode_putrootfh_maxsz (op_encode_hdr_maxsz) | |
81 | #define decode_putrootfh_maxsz (op_decode_hdr_maxsz) | |
82 | #define encode_getfh_maxsz (op_encode_hdr_maxsz) | |
83 | #define decode_getfh_maxsz (op_decode_hdr_maxsz + 1 + \ | |
84 | ((3+NFS4_FHSIZE) >> 2)) | |
85 | #define encode_getattr_maxsz (op_encode_hdr_maxsz + 3) | |
86 | #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) | |
87 | #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) | |
88 | #define nfs4_fattr_bitmap_maxsz (36 + 2 * nfs4_name_maxsz) | |
89 | #define decode_getattr_maxsz (op_decode_hdr_maxsz + 3 + \ | |
90 | nfs4_fattr_bitmap_maxsz) | |
91 | #define encode_savefh_maxsz (op_encode_hdr_maxsz) | |
92 | #define decode_savefh_maxsz (op_decode_hdr_maxsz) | |
93 | #define encode_fsinfo_maxsz (op_encode_hdr_maxsz + 2) | |
94 | #define decode_fsinfo_maxsz (op_decode_hdr_maxsz + 11) | |
95 | #define encode_renew_maxsz (op_encode_hdr_maxsz + 3) | |
96 | #define decode_renew_maxsz (op_decode_hdr_maxsz) | |
97 | #define encode_setclientid_maxsz \ | |
98 | (op_encode_hdr_maxsz + \ | |
99 | 4 /*server->ip_addr*/ + \ | |
100 | 1 /*Netid*/ + \ | |
101 | 6 /*uaddr*/ + \ | |
102 | 6 + (NFS4_VERIFIER_SIZE >> 2)) | |
103 | #define decode_setclientid_maxsz \ | |
104 | (op_decode_hdr_maxsz + \ | |
105 | 2 + \ | |
106 | 1024) /* large value for CLID_INUSE */ | |
107 | #define encode_setclientid_confirm_maxsz \ | |
108 | (op_encode_hdr_maxsz + \ | |
109 | 3 + (NFS4_VERIFIER_SIZE >> 2)) | |
110 | #define decode_setclientid_confirm_maxsz \ | |
111 | (op_decode_hdr_maxsz) | |
112 | #define encode_lookup_maxsz (op_encode_hdr_maxsz + \ | |
113 | 1 + ((3 + NFS4_FHSIZE) >> 2)) | |
114 | #define encode_remove_maxsz (op_encode_hdr_maxsz + \ | |
115 | nfs4_name_maxsz) | |
116 | #define encode_rename_maxsz (op_encode_hdr_maxsz + \ | |
117 | 2 * nfs4_name_maxsz) | |
118 | #define decode_rename_maxsz (op_decode_hdr_maxsz + 5 + 5) | |
119 | #define encode_link_maxsz (op_encode_hdr_maxsz + \ | |
120 | nfs4_name_maxsz) | |
121 | #define decode_link_maxsz (op_decode_hdr_maxsz + 5) | |
122 | #define encode_symlink_maxsz (op_encode_hdr_maxsz + \ | |
123 | 1 + nfs4_name_maxsz + \ | |
124 | nfs4_path_maxsz + \ | |
125 | nfs4_fattr_bitmap_maxsz) | |
126 | #define decode_symlink_maxsz (op_decode_hdr_maxsz + 8) | |
127 | #define encode_create_maxsz (op_encode_hdr_maxsz + \ | |
128 | 2 + nfs4_name_maxsz + \ | |
129 | nfs4_fattr_bitmap_maxsz) | |
130 | #define decode_create_maxsz (op_decode_hdr_maxsz + 8) | |
131 | #define encode_delegreturn_maxsz (op_encode_hdr_maxsz + 4) | |
132 | #define decode_delegreturn_maxsz (op_decode_hdr_maxsz) | |
133 | #define NFS4_enc_compound_sz (1024) /* XXX: large enough? */ | |
134 | #define NFS4_dec_compound_sz (1024) /* XXX: large enough? */ | |
135 | #define NFS4_enc_read_sz (compound_encode_hdr_maxsz + \ | |
136 | encode_putfh_maxsz + \ | |
137 | op_encode_hdr_maxsz + 7) | |
138 | #define NFS4_dec_read_sz (compound_decode_hdr_maxsz + \ | |
139 | decode_putfh_maxsz + \ | |
140 | op_decode_hdr_maxsz + 2) | |
141 | #define NFS4_enc_readlink_sz (compound_encode_hdr_maxsz + \ | |
142 | encode_putfh_maxsz + \ | |
143 | op_encode_hdr_maxsz) | |
144 | #define NFS4_dec_readlink_sz (compound_decode_hdr_maxsz + \ | |
145 | decode_putfh_maxsz + \ | |
146 | op_decode_hdr_maxsz) | |
147 | #define NFS4_enc_readdir_sz (compound_encode_hdr_maxsz + \ | |
148 | encode_putfh_maxsz + \ | |
149 | op_encode_hdr_maxsz + 9) | |
150 | #define NFS4_dec_readdir_sz (compound_decode_hdr_maxsz + \ | |
151 | decode_putfh_maxsz + \ | |
152 | op_decode_hdr_maxsz + 2) | |
153 | #define NFS4_enc_write_sz (compound_encode_hdr_maxsz + \ | |
154 | encode_putfh_maxsz + \ | |
155 | op_encode_hdr_maxsz + 8) | |
156 | #define NFS4_dec_write_sz (compound_decode_hdr_maxsz + \ | |
157 | decode_putfh_maxsz + \ | |
158 | op_decode_hdr_maxsz + 4) | |
159 | #define NFS4_enc_commit_sz (compound_encode_hdr_maxsz + \ | |
160 | encode_putfh_maxsz + \ | |
161 | op_encode_hdr_maxsz + 3) | |
162 | #define NFS4_dec_commit_sz (compound_decode_hdr_maxsz + \ | |
163 | decode_putfh_maxsz + \ | |
164 | op_decode_hdr_maxsz + 2) | |
165 | #define NFS4_enc_open_sz (compound_encode_hdr_maxsz + \ | |
166 | encode_putfh_maxsz + \ | |
167 | op_encode_hdr_maxsz + \ | |
168 | 13 + 3 + 2 + 64 + \ | |
169 | encode_getattr_maxsz + \ | |
170 | encode_getfh_maxsz) | |
171 | #define NFS4_dec_open_sz (compound_decode_hdr_maxsz + \ | |
172 | decode_putfh_maxsz + \ | |
173 | op_decode_hdr_maxsz + 4 + 5 + 2 + 3 + \ | |
174 | decode_getattr_maxsz + \ | |
175 | decode_getfh_maxsz) | |
176 | #define NFS4_enc_open_confirm_sz \ | |
177 | (compound_encode_hdr_maxsz + \ | |
178 | encode_putfh_maxsz + \ | |
179 | op_encode_hdr_maxsz + 5) | |
180 | #define NFS4_dec_open_confirm_sz (compound_decode_hdr_maxsz + \ | |
181 | decode_putfh_maxsz + \ | |
182 | op_decode_hdr_maxsz + 4) | |
183 | #define NFS4_enc_open_noattr_sz (compound_encode_hdr_maxsz + \ | |
184 | encode_putfh_maxsz + \ | |
185 | op_encode_hdr_maxsz + \ | |
186 | 11) | |
187 | #define NFS4_dec_open_noattr_sz (compound_decode_hdr_maxsz + \ | |
188 | decode_putfh_maxsz + \ | |
189 | op_decode_hdr_maxsz + \ | |
190 | 4 + 5 + 2 + 3) | |
191 | #define NFS4_enc_open_downgrade_sz \ | |
192 | (compound_encode_hdr_maxsz + \ | |
193 | encode_putfh_maxsz + \ | |
194 | op_encode_hdr_maxsz + 7) | |
195 | #define NFS4_dec_open_downgrade_sz \ | |
196 | (compound_decode_hdr_maxsz + \ | |
197 | decode_putfh_maxsz + \ | |
198 | op_decode_hdr_maxsz + 4) | |
199 | #define NFS4_enc_close_sz (compound_encode_hdr_maxsz + \ | |
200 | encode_putfh_maxsz + \ | |
201 | op_encode_hdr_maxsz + 5) | |
202 | #define NFS4_dec_close_sz (compound_decode_hdr_maxsz + \ | |
203 | decode_putfh_maxsz + \ | |
204 | op_decode_hdr_maxsz + 4) | |
205 | #define NFS4_enc_setattr_sz (compound_encode_hdr_maxsz + \ | |
206 | encode_putfh_maxsz + \ | |
207 | op_encode_hdr_maxsz + 4 + \ | |
208 | nfs4_fattr_bitmap_maxsz + \ | |
209 | encode_getattr_maxsz) | |
210 | #define NFS4_dec_setattr_sz (compound_decode_hdr_maxsz + \ | |
211 | decode_putfh_maxsz + \ | |
212 | op_decode_hdr_maxsz + 3) | |
213 | #define NFS4_enc_fsinfo_sz (compound_encode_hdr_maxsz + \ | |
214 | encode_putfh_maxsz + \ | |
215 | encode_fsinfo_maxsz) | |
216 | #define NFS4_dec_fsinfo_sz (compound_decode_hdr_maxsz + \ | |
217 | decode_putfh_maxsz + \ | |
218 | decode_fsinfo_maxsz) | |
219 | #define NFS4_enc_renew_sz (compound_encode_hdr_maxsz + \ | |
220 | encode_renew_maxsz) | |
221 | #define NFS4_dec_renew_sz (compound_decode_hdr_maxsz + \ | |
222 | decode_renew_maxsz) | |
223 | #define NFS4_enc_setclientid_sz (compound_encode_hdr_maxsz + \ | |
224 | encode_setclientid_maxsz) | |
225 | #define NFS4_dec_setclientid_sz (compound_decode_hdr_maxsz + \ | |
226 | decode_setclientid_maxsz) | |
227 | #define NFS4_enc_setclientid_confirm_sz \ | |
228 | (compound_encode_hdr_maxsz + \ | |
229 | encode_setclientid_confirm_maxsz + \ | |
230 | encode_putrootfh_maxsz + \ | |
231 | encode_fsinfo_maxsz) | |
232 | #define NFS4_dec_setclientid_confirm_sz \ | |
233 | (compound_decode_hdr_maxsz + \ | |
234 | decode_setclientid_confirm_maxsz + \ | |
235 | decode_putrootfh_maxsz + \ | |
236 | decode_fsinfo_maxsz) | |
237 | #define NFS4_enc_lock_sz (compound_encode_hdr_maxsz + \ | |
238 | encode_putfh_maxsz + \ | |
239 | encode_getattr_maxsz + \ | |
240 | op_encode_hdr_maxsz + \ | |
241 | 1 + 1 + 2 + 2 + \ | |
242 | 1 + 4 + 1 + 2 + \ | |
243 | owner_id_maxsz) | |
244 | #define NFS4_dec_lock_sz (compound_decode_hdr_maxsz + \ | |
245 | decode_putfh_maxsz + \ | |
246 | decode_getattr_maxsz + \ | |
247 | op_decode_hdr_maxsz + \ | |
248 | 2 + 2 + 1 + 2 + \ | |
249 | owner_id_maxsz) | |
250 | #define NFS4_enc_lockt_sz (compound_encode_hdr_maxsz + \ | |
251 | encode_putfh_maxsz + \ | |
252 | encode_getattr_maxsz + \ | |
253 | op_encode_hdr_maxsz + \ | |
254 | 1 + 2 + 2 + 2 + \ | |
255 | owner_id_maxsz) | |
256 | #define NFS4_dec_lockt_sz (NFS4_dec_lock_sz) | |
257 | #define NFS4_enc_locku_sz (compound_encode_hdr_maxsz + \ | |
258 | encode_putfh_maxsz + \ | |
259 | encode_getattr_maxsz + \ | |
260 | op_encode_hdr_maxsz + \ | |
261 | 1 + 1 + 4 + 2 + 2) | |
262 | #define NFS4_dec_locku_sz (compound_decode_hdr_maxsz + \ | |
263 | decode_putfh_maxsz + \ | |
264 | decode_getattr_maxsz + \ | |
265 | op_decode_hdr_maxsz + 4) | |
266 | #define NFS4_enc_access_sz (compound_encode_hdr_maxsz + \ | |
267 | encode_putfh_maxsz + \ | |
268 | op_encode_hdr_maxsz + 1) | |
269 | #define NFS4_dec_access_sz (compound_decode_hdr_maxsz + \ | |
270 | decode_putfh_maxsz + \ | |
271 | op_decode_hdr_maxsz + 2) | |
272 | #define NFS4_enc_getattr_sz (compound_encode_hdr_maxsz + \ | |
273 | encode_putfh_maxsz + \ | |
274 | encode_getattr_maxsz) | |
275 | #define NFS4_dec_getattr_sz (compound_decode_hdr_maxsz + \ | |
276 | decode_putfh_maxsz + \ | |
277 | decode_getattr_maxsz) | |
278 | #define NFS4_enc_lookup_sz (compound_encode_hdr_maxsz + \ | |
279 | encode_putfh_maxsz + \ | |
280 | encode_lookup_maxsz + \ | |
281 | encode_getattr_maxsz + \ | |
282 | encode_getfh_maxsz) | |
283 | #define NFS4_dec_lookup_sz (compound_decode_hdr_maxsz + \ | |
284 | decode_putfh_maxsz + \ | |
285 | op_decode_hdr_maxsz + \ | |
286 | decode_getattr_maxsz + \ | |
287 | decode_getfh_maxsz) | |
288 | #define NFS4_enc_lookup_root_sz (compound_encode_hdr_maxsz + \ | |
289 | encode_putrootfh_maxsz + \ | |
290 | encode_getattr_maxsz + \ | |
291 | encode_getfh_maxsz) | |
292 | #define NFS4_dec_lookup_root_sz (compound_decode_hdr_maxsz + \ | |
293 | decode_putrootfh_maxsz + \ | |
294 | decode_getattr_maxsz + \ | |
295 | decode_getfh_maxsz) | |
296 | #define NFS4_enc_remove_sz (compound_encode_hdr_maxsz + \ | |
297 | encode_putfh_maxsz + \ | |
298 | encode_remove_maxsz) | |
299 | #define NFS4_dec_remove_sz (compound_decode_hdr_maxsz + \ | |
300 | decode_putfh_maxsz + \ | |
301 | op_decode_hdr_maxsz + 5) | |
302 | #define NFS4_enc_rename_sz (compound_encode_hdr_maxsz + \ | |
303 | encode_putfh_maxsz + \ | |
304 | encode_savefh_maxsz + \ | |
305 | encode_putfh_maxsz + \ | |
306 | encode_rename_maxsz) | |
307 | #define NFS4_dec_rename_sz (compound_decode_hdr_maxsz + \ | |
308 | decode_putfh_maxsz + \ | |
309 | decode_savefh_maxsz + \ | |
310 | decode_putfh_maxsz + \ | |
311 | decode_rename_maxsz) | |
312 | #define NFS4_enc_link_sz (compound_encode_hdr_maxsz + \ | |
313 | encode_putfh_maxsz + \ | |
314 | encode_savefh_maxsz + \ | |
315 | encode_putfh_maxsz + \ | |
316 | encode_link_maxsz) | |
317 | #define NFS4_dec_link_sz (compound_decode_hdr_maxsz + \ | |
318 | decode_putfh_maxsz + \ | |
319 | decode_savefh_maxsz + \ | |
320 | decode_putfh_maxsz + \ | |
321 | decode_link_maxsz) | |
322 | #define NFS4_enc_symlink_sz (compound_encode_hdr_maxsz + \ | |
323 | encode_putfh_maxsz + \ | |
324 | encode_symlink_maxsz + \ | |
325 | encode_getattr_maxsz + \ | |
326 | encode_getfh_maxsz) | |
327 | #define NFS4_dec_symlink_sz (compound_decode_hdr_maxsz + \ | |
328 | decode_putfh_maxsz + \ | |
329 | decode_symlink_maxsz + \ | |
330 | decode_getattr_maxsz + \ | |
331 | decode_getfh_maxsz) | |
332 | #define NFS4_enc_create_sz (compound_encode_hdr_maxsz + \ | |
333 | encode_putfh_maxsz + \ | |
334 | encode_create_maxsz + \ | |
335 | encode_getattr_maxsz + \ | |
336 | encode_getfh_maxsz) | |
337 | #define NFS4_dec_create_sz (compound_decode_hdr_maxsz + \ | |
338 | decode_putfh_maxsz + \ | |
339 | decode_create_maxsz + \ | |
340 | decode_getattr_maxsz + \ | |
341 | decode_getfh_maxsz) | |
342 | #define NFS4_enc_pathconf_sz (compound_encode_hdr_maxsz + \ | |
343 | encode_putfh_maxsz + \ | |
344 | encode_getattr_maxsz) | |
345 | #define NFS4_dec_pathconf_sz (compound_decode_hdr_maxsz + \ | |
346 | decode_putfh_maxsz + \ | |
347 | decode_getattr_maxsz) | |
348 | #define NFS4_enc_statfs_sz (compound_encode_hdr_maxsz + \ | |
349 | encode_putfh_maxsz + \ | |
350 | encode_getattr_maxsz) | |
351 | #define NFS4_dec_statfs_sz (compound_decode_hdr_maxsz + \ | |
352 | decode_putfh_maxsz + \ | |
353 | op_decode_hdr_maxsz + 12) | |
354 | #define NFS4_enc_server_caps_sz (compound_encode_hdr_maxsz + \ | |
355 | encode_getattr_maxsz) | |
356 | #define NFS4_dec_server_caps_sz (compound_decode_hdr_maxsz + \ | |
357 | decode_getattr_maxsz) | |
358 | #define NFS4_enc_delegreturn_sz (compound_encode_hdr_maxsz + \ | |
359 | encode_putfh_maxsz + \ | |
360 | encode_delegreturn_maxsz) | |
361 | #define NFS4_dec_delegreturn_sz (compound_decode_hdr_maxsz + \ | |
362 | decode_delegreturn_maxsz) | |
363 | ||
364 | static struct { | |
365 | unsigned int mode; | |
366 | unsigned int nfs2type; | |
367 | } nfs_type2fmt[] = { | |
368 | { 0, NFNON }, | |
369 | { S_IFREG, NFREG }, | |
370 | { S_IFDIR, NFDIR }, | |
371 | { S_IFBLK, NFBLK }, | |
372 | { S_IFCHR, NFCHR }, | |
373 | { S_IFLNK, NFLNK }, | |
374 | { S_IFSOCK, NFSOCK }, | |
375 | { S_IFIFO, NFFIFO }, | |
376 | { 0, NFNON }, | |
377 | { 0, NFNON }, | |
378 | }; | |
379 | ||
380 | struct compound_hdr { | |
381 | int32_t status; | |
382 | uint32_t nops; | |
383 | uint32_t taglen; | |
384 | char * tag; | |
385 | }; | |
386 | ||
387 | /* | |
388 | * START OF "GENERIC" ENCODE ROUTINES. | |
389 | * These may look a little ugly since they are imported from a "generic" | |
390 | * set of XDR encode/decode routines which are intended to be shared by | |
391 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
392 | * | |
393 | * If the pain of reading these is too great, it should be a straightforward | |
394 | * task to translate them into Linux-specific versions which are more | |
395 | * consistent with the style used in NFSv2/v3... | |
396 | */ | |
397 | #define WRITE32(n) *p++ = htonl(n) | |
398 | #define WRITE64(n) do { \ | |
399 | *p++ = htonl((uint32_t)((n) >> 32)); \ | |
400 | *p++ = htonl((uint32_t)(n)); \ | |
401 | } while (0) | |
402 | #define WRITEMEM(ptr,nbytes) do { \ | |
403 | p = xdr_encode_opaque_fixed(p, ptr, nbytes); \ | |
404 | } while (0) | |
405 | ||
406 | #define RESERVE_SPACE(nbytes) do { \ | |
407 | p = xdr_reserve_space(xdr, nbytes); \ | |
408 | if (!p) printk("RESERVE_SPACE(%d) failed in function %s\n", (int) (nbytes), __FUNCTION__); \ | |
409 | BUG_ON(!p); \ | |
410 | } while (0) | |
411 | ||
412 | static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) | |
413 | { | |
414 | uint32_t *p; | |
415 | ||
416 | p = xdr_reserve_space(xdr, 4 + len); | |
417 | BUG_ON(p == NULL); | |
418 | xdr_encode_opaque(p, str, len); | |
419 | } | |
420 | ||
421 | static int encode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
422 | { | |
423 | uint32_t *p; | |
424 | ||
425 | dprintk("encode_compound: tag=%.*s\n", (int)hdr->taglen, hdr->tag); | |
426 | BUG_ON(hdr->taglen > NFS4_MAXTAGLEN); | |
427 | RESERVE_SPACE(12+(XDR_QUADLEN(hdr->taglen)<<2)); | |
428 | WRITE32(hdr->taglen); | |
429 | WRITEMEM(hdr->tag, hdr->taglen); | |
430 | WRITE32(NFS4_MINOR_VERSION); | |
431 | WRITE32(hdr->nops); | |
432 | return 0; | |
433 | } | |
434 | ||
435 | static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *verf) | |
436 | { | |
437 | uint32_t *p; | |
438 | ||
439 | p = xdr_reserve_space(xdr, NFS4_VERIFIER_SIZE); | |
440 | BUG_ON(p == NULL); | |
441 | xdr_encode_opaque_fixed(p, verf->data, NFS4_VERIFIER_SIZE); | |
442 | } | |
443 | ||
444 | static int encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs_server *server) | |
445 | { | |
446 | char owner_name[IDMAP_NAMESZ]; | |
447 | char owner_group[IDMAP_NAMESZ]; | |
448 | int owner_namelen = 0; | |
449 | int owner_grouplen = 0; | |
450 | uint32_t *p; | |
451 | uint32_t *q; | |
452 | int len; | |
453 | uint32_t bmval0 = 0; | |
454 | uint32_t bmval1 = 0; | |
455 | int status; | |
456 | ||
457 | /* | |
458 | * We reserve enough space to write the entire attribute buffer at once. | |
459 | * In the worst-case, this would be | |
460 | * 12(bitmap) + 4(attrlen) + 8(size) + 4(mode) + 4(atime) + 4(mtime) | |
461 | * = 36 bytes, plus any contribution from variable-length fields | |
462 | * such as owner/group/acl's. | |
463 | */ | |
464 | len = 16; | |
465 | ||
466 | /* Sigh */ | |
467 | if (iap->ia_valid & ATTR_SIZE) | |
468 | len += 8; | |
469 | if (iap->ia_valid & ATTR_MODE) | |
470 | len += 4; | |
471 | if (iap->ia_valid & ATTR_UID) { | |
472 | owner_namelen = nfs_map_uid_to_name(server->nfs4_state, iap->ia_uid, owner_name); | |
473 | if (owner_namelen < 0) { | |
474 | printk(KERN_WARNING "nfs: couldn't resolve uid %d to string\n", | |
475 | iap->ia_uid); | |
476 | /* XXX */ | |
477 | strcpy(owner_name, "nobody"); | |
478 | owner_namelen = sizeof("nobody") - 1; | |
479 | /* goto out; */ | |
480 | } | |
481 | len += 4 + (XDR_QUADLEN(owner_namelen) << 2); | |
482 | } | |
483 | if (iap->ia_valid & ATTR_GID) { | |
484 | owner_grouplen = nfs_map_gid_to_group(server->nfs4_state, iap->ia_gid, owner_group); | |
485 | if (owner_grouplen < 0) { | |
486 | printk(KERN_WARNING "nfs4: couldn't resolve gid %d to string\n", | |
487 | iap->ia_gid); | |
488 | strcpy(owner_group, "nobody"); | |
489 | owner_grouplen = sizeof("nobody") - 1; | |
490 | /* goto out; */ | |
491 | } | |
492 | len += 4 + (XDR_QUADLEN(owner_grouplen) << 2); | |
493 | } | |
494 | if (iap->ia_valid & ATTR_ATIME_SET) | |
495 | len += 16; | |
496 | else if (iap->ia_valid & ATTR_ATIME) | |
497 | len += 4; | |
498 | if (iap->ia_valid & ATTR_MTIME_SET) | |
499 | len += 16; | |
500 | else if (iap->ia_valid & ATTR_MTIME) | |
501 | len += 4; | |
502 | RESERVE_SPACE(len); | |
503 | ||
504 | /* | |
505 | * We write the bitmap length now, but leave the bitmap and the attribute | |
506 | * buffer length to be backfilled at the end of this routine. | |
507 | */ | |
508 | WRITE32(2); | |
509 | q = p; | |
510 | p += 3; | |
511 | ||
512 | if (iap->ia_valid & ATTR_SIZE) { | |
513 | bmval0 |= FATTR4_WORD0_SIZE; | |
514 | WRITE64(iap->ia_size); | |
515 | } | |
516 | if (iap->ia_valid & ATTR_MODE) { | |
517 | bmval1 |= FATTR4_WORD1_MODE; | |
518 | WRITE32(iap->ia_mode); | |
519 | } | |
520 | if (iap->ia_valid & ATTR_UID) { | |
521 | bmval1 |= FATTR4_WORD1_OWNER; | |
522 | WRITE32(owner_namelen); | |
523 | WRITEMEM(owner_name, owner_namelen); | |
524 | } | |
525 | if (iap->ia_valid & ATTR_GID) { | |
526 | bmval1 |= FATTR4_WORD1_OWNER_GROUP; | |
527 | WRITE32(owner_grouplen); | |
528 | WRITEMEM(owner_group, owner_grouplen); | |
529 | } | |
530 | if (iap->ia_valid & ATTR_ATIME_SET) { | |
531 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
532 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
533 | WRITE32(0); | |
534 | WRITE32(iap->ia_mtime.tv_sec); | |
535 | WRITE32(iap->ia_mtime.tv_nsec); | |
536 | } | |
537 | else if (iap->ia_valid & ATTR_ATIME) { | |
538 | bmval1 |= FATTR4_WORD1_TIME_ACCESS_SET; | |
539 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
540 | } | |
541 | if (iap->ia_valid & ATTR_MTIME_SET) { | |
542 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
543 | WRITE32(NFS4_SET_TO_CLIENT_TIME); | |
544 | WRITE32(0); | |
545 | WRITE32(iap->ia_mtime.tv_sec); | |
546 | WRITE32(iap->ia_mtime.tv_nsec); | |
547 | } | |
548 | else if (iap->ia_valid & ATTR_MTIME) { | |
549 | bmval1 |= FATTR4_WORD1_TIME_MODIFY_SET; | |
550 | WRITE32(NFS4_SET_TO_SERVER_TIME); | |
551 | } | |
552 | ||
553 | /* | |
554 | * Now we backfill the bitmap and the attribute buffer length. | |
555 | */ | |
556 | if (len != ((char *)p - (char *)q) + 4) { | |
557 | printk ("encode_attr: Attr length calculation error! %u != %Zu\n", | |
558 | len, ((char *)p - (char *)q) + 4); | |
559 | BUG(); | |
560 | } | |
561 | len = (char *)p - (char *)q - 12; | |
562 | *q++ = htonl(bmval0); | |
563 | *q++ = htonl(bmval1); | |
564 | *q++ = htonl(len); | |
565 | ||
566 | status = 0; | |
567 | /* out: */ | |
568 | return status; | |
569 | } | |
570 | ||
571 | static int encode_access(struct xdr_stream *xdr, u32 access) | |
572 | { | |
573 | uint32_t *p; | |
574 | ||
575 | RESERVE_SPACE(8); | |
576 | WRITE32(OP_ACCESS); | |
577 | WRITE32(access); | |
578 | ||
579 | return 0; | |
580 | } | |
581 | ||
582 | static int encode_close(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
583 | { | |
584 | uint32_t *p; | |
585 | ||
586 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
587 | WRITE32(OP_CLOSE); | |
588 | WRITE32(arg->seqid); | |
589 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | static int encode_commit(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
595 | { | |
596 | uint32_t *p; | |
597 | ||
598 | RESERVE_SPACE(16); | |
599 | WRITE32(OP_COMMIT); | |
600 | WRITE64(args->offset); | |
601 | WRITE32(args->count); | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | static int encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg *create) | |
607 | { | |
608 | uint32_t *p; | |
609 | ||
610 | RESERVE_SPACE(8); | |
611 | WRITE32(OP_CREATE); | |
612 | WRITE32(create->ftype); | |
613 | ||
614 | switch (create->ftype) { | |
615 | case NF4LNK: | |
616 | RESERVE_SPACE(4 + create->u.symlink->len); | |
617 | WRITE32(create->u.symlink->len); | |
618 | WRITEMEM(create->u.symlink->name, create->u.symlink->len); | |
619 | break; | |
620 | ||
621 | case NF4BLK: case NF4CHR: | |
622 | RESERVE_SPACE(8); | |
623 | WRITE32(create->u.device.specdata1); | |
624 | WRITE32(create->u.device.specdata2); | |
625 | break; | |
626 | ||
627 | default: | |
628 | break; | |
629 | } | |
630 | ||
631 | RESERVE_SPACE(4 + create->name->len); | |
632 | WRITE32(create->name->len); | |
633 | WRITEMEM(create->name->name, create->name->len); | |
634 | ||
635 | return encode_attrs(xdr, create->attrs, create->server); | |
636 | } | |
637 | ||
638 | static int encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap) | |
639 | { | |
640 | uint32_t *p; | |
641 | ||
642 | RESERVE_SPACE(12); | |
643 | WRITE32(OP_GETATTR); | |
644 | WRITE32(1); | |
645 | WRITE32(bitmap); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | static int encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1) | |
650 | { | |
651 | uint32_t *p; | |
652 | ||
653 | RESERVE_SPACE(16); | |
654 | WRITE32(OP_GETATTR); | |
655 | WRITE32(2); | |
656 | WRITE32(bm0); | |
657 | WRITE32(bm1); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int encode_getfattr(struct xdr_stream *xdr, const u32* bitmask) | |
662 | { | |
663 | extern u32 nfs4_fattr_bitmap[]; | |
664 | ||
665 | return encode_getattr_two(xdr, | |
666 | bitmask[0] & nfs4_fattr_bitmap[0], | |
667 | bitmask[1] & nfs4_fattr_bitmap[1]); | |
668 | } | |
669 | ||
670 | static int encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask) | |
671 | { | |
672 | extern u32 nfs4_fsinfo_bitmap[]; | |
673 | ||
674 | return encode_getattr_two(xdr, bitmask[0] & nfs4_fsinfo_bitmap[0], | |
675 | bitmask[1] & nfs4_fsinfo_bitmap[1]); | |
676 | } | |
677 | ||
678 | static int encode_getfh(struct xdr_stream *xdr) | |
679 | { | |
680 | uint32_t *p; | |
681 | ||
682 | RESERVE_SPACE(4); | |
683 | WRITE32(OP_GETFH); | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static int encode_link(struct xdr_stream *xdr, const struct qstr *name) | |
689 | { | |
690 | uint32_t *p; | |
691 | ||
692 | RESERVE_SPACE(8 + name->len); | |
693 | WRITE32(OP_LINK); | |
694 | WRITE32(name->len); | |
695 | WRITEMEM(name->name, name->len); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | /* | |
701 | * opcode,type,reclaim,offset,length,new_lock_owner = 32 | |
702 | * open_seqid,open_stateid,lock_seqid,lock_owner.clientid, lock_owner.id = 40 | |
703 | */ | |
704 | static int encode_lock(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
705 | { | |
706 | uint32_t *p; | |
707 | struct nfs_lock_opargs *opargs = arg->u.lock; | |
708 | ||
709 | RESERVE_SPACE(32); | |
710 | WRITE32(OP_LOCK); | |
711 | WRITE32(arg->type); | |
712 | WRITE32(opargs->reclaim); | |
713 | WRITE64(arg->offset); | |
714 | WRITE64(arg->length); | |
715 | WRITE32(opargs->new_lock_owner); | |
716 | if (opargs->new_lock_owner){ | |
717 | struct nfs_open_to_lock *ol = opargs->u.open_lock; | |
718 | ||
719 | RESERVE_SPACE(40); | |
720 | WRITE32(ol->open_seqid); | |
721 | WRITEMEM(&ol->open_stateid, sizeof(ol->open_stateid)); | |
722 | WRITE32(ol->lock_seqid); | |
723 | WRITE64(ol->lock_owner.clientid); | |
724 | WRITE32(4); | |
725 | WRITE32(ol->lock_owner.id); | |
726 | } | |
727 | else { | |
728 | struct nfs_exist_lock *el = opargs->u.exist_lock; | |
729 | ||
730 | RESERVE_SPACE(20); | |
731 | WRITEMEM(&el->stateid, sizeof(el->stateid)); | |
732 | WRITE32(el->seqid); | |
733 | } | |
734 | ||
735 | return 0; | |
736 | } | |
737 | ||
738 | static int encode_lockt(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
739 | { | |
740 | uint32_t *p; | |
741 | struct nfs_lowner *opargs = arg->u.lockt; | |
742 | ||
743 | RESERVE_SPACE(40); | |
744 | WRITE32(OP_LOCKT); | |
745 | WRITE32(arg->type); | |
746 | WRITE64(arg->offset); | |
747 | WRITE64(arg->length); | |
748 | WRITE64(opargs->clientid); | |
749 | WRITE32(4); | |
750 | WRITE32(opargs->id); | |
751 | ||
752 | return 0; | |
753 | } | |
754 | ||
755 | static int encode_locku(struct xdr_stream *xdr, const struct nfs_lockargs *arg) | |
756 | { | |
757 | uint32_t *p; | |
758 | struct nfs_locku_opargs *opargs = arg->u.locku; | |
759 | ||
760 | RESERVE_SPACE(44); | |
761 | WRITE32(OP_LOCKU); | |
762 | WRITE32(arg->type); | |
763 | WRITE32(opargs->seqid); | |
764 | WRITEMEM(&opargs->stateid, sizeof(opargs->stateid)); | |
765 | WRITE64(arg->offset); | |
766 | WRITE64(arg->length); | |
767 | ||
768 | return 0; | |
769 | } | |
770 | ||
771 | static int encode_lookup(struct xdr_stream *xdr, const struct qstr *name) | |
772 | { | |
773 | int len = name->len; | |
774 | uint32_t *p; | |
775 | ||
776 | RESERVE_SPACE(8 + len); | |
777 | WRITE32(OP_LOOKUP); | |
778 | WRITE32(len); | |
779 | WRITEMEM(name->name, len); | |
780 | ||
781 | return 0; | |
782 | } | |
783 | ||
784 | static void encode_share_access(struct xdr_stream *xdr, int open_flags) | |
785 | { | |
786 | uint32_t *p; | |
787 | ||
788 | RESERVE_SPACE(8); | |
789 | switch (open_flags & (FMODE_READ|FMODE_WRITE)) { | |
790 | case FMODE_READ: | |
791 | WRITE32(NFS4_SHARE_ACCESS_READ); | |
792 | break; | |
793 | case FMODE_WRITE: | |
794 | WRITE32(NFS4_SHARE_ACCESS_WRITE); | |
795 | break; | |
796 | case FMODE_READ|FMODE_WRITE: | |
797 | WRITE32(NFS4_SHARE_ACCESS_BOTH); | |
798 | break; | |
799 | default: | |
800 | BUG(); | |
801 | } | |
802 | WRITE32(0); /* for linux, share_deny = 0 always */ | |
803 | } | |
804 | ||
805 | static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
806 | { | |
807 | uint32_t *p; | |
808 | /* | |
809 | * opcode 4, seqid 4, share_access 4, share_deny 4, clientid 8, ownerlen 4, | |
810 | * owner 4 = 32 | |
811 | */ | |
812 | RESERVE_SPACE(8); | |
813 | WRITE32(OP_OPEN); | |
814 | WRITE32(arg->seqid); | |
815 | encode_share_access(xdr, arg->open_flags); | |
816 | RESERVE_SPACE(16); | |
817 | WRITE64(arg->clientid); | |
818 | WRITE32(4); | |
819 | WRITE32(arg->id); | |
820 | } | |
821 | ||
822 | static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
823 | { | |
824 | uint32_t *p; | |
825 | ||
826 | RESERVE_SPACE(4); | |
827 | switch(arg->open_flags & O_EXCL) { | |
828 | case 0: | |
829 | WRITE32(NFS4_CREATE_UNCHECKED); | |
830 | encode_attrs(xdr, arg->u.attrs, arg->server); | |
831 | break; | |
832 | default: | |
833 | WRITE32(NFS4_CREATE_EXCLUSIVE); | |
834 | encode_nfs4_verifier(xdr, &arg->u.verifier); | |
835 | } | |
836 | } | |
837 | ||
838 | static void encode_opentype(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
839 | { | |
840 | uint32_t *p; | |
841 | ||
842 | RESERVE_SPACE(4); | |
843 | switch (arg->open_flags & O_CREAT) { | |
844 | case 0: | |
845 | WRITE32(NFS4_OPEN_NOCREATE); | |
846 | break; | |
847 | default: | |
848 | BUG_ON(arg->claim != NFS4_OPEN_CLAIM_NULL); | |
849 | WRITE32(NFS4_OPEN_CREATE); | |
850 | encode_createmode(xdr, arg); | |
851 | } | |
852 | } | |
853 | ||
854 | static inline void encode_delegation_type(struct xdr_stream *xdr, int delegation_type) | |
855 | { | |
856 | uint32_t *p; | |
857 | ||
858 | RESERVE_SPACE(4); | |
859 | switch (delegation_type) { | |
860 | case 0: | |
861 | WRITE32(NFS4_OPEN_DELEGATE_NONE); | |
862 | break; | |
863 | case FMODE_READ: | |
864 | WRITE32(NFS4_OPEN_DELEGATE_READ); | |
865 | break; | |
866 | case FMODE_WRITE|FMODE_READ: | |
867 | WRITE32(NFS4_OPEN_DELEGATE_WRITE); | |
868 | break; | |
869 | default: | |
870 | BUG(); | |
871 | } | |
872 | } | |
873 | ||
874 | static inline void encode_claim_null(struct xdr_stream *xdr, const struct qstr *name) | |
875 | { | |
876 | uint32_t *p; | |
877 | ||
878 | RESERVE_SPACE(4); | |
879 | WRITE32(NFS4_OPEN_CLAIM_NULL); | |
880 | encode_string(xdr, name->len, name->name); | |
881 | } | |
882 | ||
883 | static inline void encode_claim_previous(struct xdr_stream *xdr, int type) | |
884 | { | |
885 | uint32_t *p; | |
886 | ||
887 | RESERVE_SPACE(4); | |
888 | WRITE32(NFS4_OPEN_CLAIM_PREVIOUS); | |
889 | encode_delegation_type(xdr, type); | |
890 | } | |
891 | ||
892 | static inline void encode_claim_delegate_cur(struct xdr_stream *xdr, const struct qstr *name, const nfs4_stateid *stateid) | |
893 | { | |
894 | uint32_t *p; | |
895 | ||
896 | RESERVE_SPACE(4+sizeof(stateid->data)); | |
897 | WRITE32(NFS4_OPEN_CLAIM_DELEGATE_CUR); | |
898 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
899 | encode_string(xdr, name->len, name->name); | |
900 | } | |
901 | ||
902 | static int encode_open(struct xdr_stream *xdr, const struct nfs_openargs *arg) | |
903 | { | |
904 | encode_openhdr(xdr, arg); | |
905 | encode_opentype(xdr, arg); | |
906 | switch (arg->claim) { | |
907 | case NFS4_OPEN_CLAIM_NULL: | |
908 | encode_claim_null(xdr, arg->name); | |
909 | break; | |
910 | case NFS4_OPEN_CLAIM_PREVIOUS: | |
911 | encode_claim_previous(xdr, arg->u.delegation_type); | |
912 | break; | |
913 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: | |
914 | encode_claim_delegate_cur(xdr, arg->name, &arg->u.delegation); | |
915 | break; | |
916 | default: | |
917 | BUG(); | |
918 | } | |
919 | return 0; | |
920 | } | |
921 | ||
922 | static int encode_open_confirm(struct xdr_stream *xdr, const struct nfs_open_confirmargs *arg) | |
923 | { | |
924 | uint32_t *p; | |
925 | ||
926 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
927 | WRITE32(OP_OPEN_CONFIRM); | |
928 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
929 | WRITE32(arg->seqid); | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | static int encode_open_downgrade(struct xdr_stream *xdr, const struct nfs_closeargs *arg) | |
935 | { | |
936 | uint32_t *p; | |
937 | ||
938 | RESERVE_SPACE(8+sizeof(arg->stateid.data)); | |
939 | WRITE32(OP_OPEN_DOWNGRADE); | |
940 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
941 | WRITE32(arg->seqid); | |
942 | encode_share_access(xdr, arg->open_flags); | |
943 | return 0; | |
944 | } | |
945 | ||
946 | static int | |
947 | encode_putfh(struct xdr_stream *xdr, const struct nfs_fh *fh) | |
948 | { | |
949 | int len = fh->size; | |
950 | uint32_t *p; | |
951 | ||
952 | RESERVE_SPACE(8 + len); | |
953 | WRITE32(OP_PUTFH); | |
954 | WRITE32(len); | |
955 | WRITEMEM(fh->data, len); | |
956 | ||
957 | return 0; | |
958 | } | |
959 | ||
960 | static int encode_putrootfh(struct xdr_stream *xdr) | |
961 | { | |
962 | uint32_t *p; | |
963 | ||
964 | RESERVE_SPACE(4); | |
965 | WRITE32(OP_PUTROOTFH); | |
966 | ||
967 | return 0; | |
968 | } | |
969 | ||
970 | static void encode_stateid(struct xdr_stream *xdr, const struct nfs_open_context *ctx) | |
971 | { | |
972 | extern nfs4_stateid zero_stateid; | |
973 | nfs4_stateid stateid; | |
974 | uint32_t *p; | |
975 | ||
976 | RESERVE_SPACE(16); | |
977 | if (ctx->state != NULL) { | |
978 | nfs4_copy_stateid(&stateid, ctx->state, ctx->lockowner); | |
979 | WRITEMEM(stateid.data, sizeof(stateid.data)); | |
980 | } else | |
981 | WRITEMEM(zero_stateid.data, sizeof(zero_stateid.data)); | |
982 | } | |
983 | ||
984 | static int encode_read(struct xdr_stream *xdr, const struct nfs_readargs *args) | |
985 | { | |
986 | uint32_t *p; | |
987 | ||
988 | RESERVE_SPACE(4); | |
989 | WRITE32(OP_READ); | |
990 | ||
991 | encode_stateid(xdr, args->context); | |
992 | ||
993 | RESERVE_SPACE(12); | |
994 | WRITE64(args->offset); | |
995 | WRITE32(args->count); | |
996 | ||
997 | return 0; | |
998 | } | |
999 | ||
1000 | static int encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg *readdir, struct rpc_rqst *req) | |
1001 | { | |
1002 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1003 | int replen; | |
1004 | uint32_t *p; | |
1005 | ||
1006 | RESERVE_SPACE(32+sizeof(nfs4_verifier)); | |
1007 | WRITE32(OP_READDIR); | |
1008 | WRITE64(readdir->cookie); | |
1009 | WRITEMEM(readdir->verifier.data, sizeof(readdir->verifier.data)); | |
1010 | WRITE32(readdir->count >> 1); /* We're not doing readdirplus */ | |
1011 | WRITE32(readdir->count); | |
1012 | WRITE32(2); | |
1013 | if (readdir->bitmask[1] & FATTR4_WORD1_MOUNTED_ON_FILEID) { | |
1014 | WRITE32(0); | |
1015 | WRITE32(FATTR4_WORD1_MOUNTED_ON_FILEID); | |
1016 | } else { | |
1017 | WRITE32(FATTR4_WORD0_FILEID); | |
1018 | WRITE32(0); | |
1019 | } | |
1020 | ||
1021 | /* set up reply kvec | |
1022 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1023 | * + OP_READDIR + status + verifer(2) = 9 | |
1024 | */ | |
1025 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 9) << 2; | |
1026 | xdr_inline_pages(&req->rq_rcv_buf, replen, readdir->pages, | |
1027 | readdir->pgbase, readdir->count); | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
1032 | static int encode_readlink(struct xdr_stream *xdr, const struct nfs4_readlink *readlink, struct rpc_rqst *req) | |
1033 | { | |
1034 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1035 | unsigned int replen; | |
1036 | uint32_t *p; | |
1037 | ||
1038 | RESERVE_SPACE(4); | |
1039 | WRITE32(OP_READLINK); | |
1040 | ||
1041 | /* set up reply kvec | |
1042 | * toplevel_status + taglen + rescount + OP_PUTFH + status | |
1043 | * + OP_READLINK + status + string length = 8 | |
1044 | */ | |
1045 | replen = (RPC_REPHDRSIZE + auth->au_rslack + 8) << 2; | |
1046 | xdr_inline_pages(&req->rq_rcv_buf, replen, readlink->pages, | |
1047 | readlink->pgbase, readlink->pglen); | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | static int encode_remove(struct xdr_stream *xdr, const struct qstr *name) | |
1053 | { | |
1054 | uint32_t *p; | |
1055 | ||
1056 | RESERVE_SPACE(8 + name->len); | |
1057 | WRITE32(OP_REMOVE); | |
1058 | WRITE32(name->len); | |
1059 | WRITEMEM(name->name, name->len); | |
1060 | ||
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | static int encode_rename(struct xdr_stream *xdr, const struct qstr *oldname, const struct qstr *newname) | |
1065 | { | |
1066 | uint32_t *p; | |
1067 | ||
1068 | RESERVE_SPACE(8 + oldname->len); | |
1069 | WRITE32(OP_RENAME); | |
1070 | WRITE32(oldname->len); | |
1071 | WRITEMEM(oldname->name, oldname->len); | |
1072 | ||
1073 | RESERVE_SPACE(4 + newname->len); | |
1074 | WRITE32(newname->len); | |
1075 | WRITEMEM(newname->name, newname->len); | |
1076 | ||
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static int encode_renew(struct xdr_stream *xdr, const struct nfs4_client *client_stateid) | |
1081 | { | |
1082 | uint32_t *p; | |
1083 | ||
1084 | RESERVE_SPACE(12); | |
1085 | WRITE32(OP_RENEW); | |
1086 | WRITE64(client_stateid->cl_clientid); | |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static int | |
1092 | encode_savefh(struct xdr_stream *xdr) | |
1093 | { | |
1094 | uint32_t *p; | |
1095 | ||
1096 | RESERVE_SPACE(4); | |
1097 | WRITE32(OP_SAVEFH); | |
1098 | ||
1099 | return 0; | |
1100 | } | |
1101 | ||
1102 | static int encode_setattr(struct xdr_stream *xdr, const struct nfs_setattrargs *arg, const struct nfs_server *server) | |
1103 | { | |
1104 | int status; | |
1105 | uint32_t *p; | |
1106 | ||
1107 | RESERVE_SPACE(4+sizeof(arg->stateid.data)); | |
1108 | WRITE32(OP_SETATTR); | |
1109 | WRITEMEM(arg->stateid.data, sizeof(arg->stateid.data)); | |
1110 | ||
1111 | if ((status = encode_attrs(xdr, arg->iap, server))) | |
1112 | return status; | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | static int encode_setclientid(struct xdr_stream *xdr, const struct nfs4_setclientid *setclientid) | |
1118 | { | |
1119 | uint32_t *p; | |
1120 | ||
1121 | RESERVE_SPACE(4 + sizeof(setclientid->sc_verifier->data)); | |
1122 | WRITE32(OP_SETCLIENTID); | |
1123 | WRITEMEM(setclientid->sc_verifier->data, sizeof(setclientid->sc_verifier->data)); | |
1124 | ||
1125 | encode_string(xdr, setclientid->sc_name_len, setclientid->sc_name); | |
1126 | RESERVE_SPACE(4); | |
1127 | WRITE32(setclientid->sc_prog); | |
1128 | encode_string(xdr, setclientid->sc_netid_len, setclientid->sc_netid); | |
1129 | encode_string(xdr, setclientid->sc_uaddr_len, setclientid->sc_uaddr); | |
1130 | RESERVE_SPACE(4); | |
1131 | WRITE32(setclientid->sc_cb_ident); | |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int encode_setclientid_confirm(struct xdr_stream *xdr, const struct nfs4_client *client_state) | |
1137 | { | |
1138 | uint32_t *p; | |
1139 | ||
1140 | RESERVE_SPACE(12 + sizeof(client_state->cl_confirm.data)); | |
1141 | WRITE32(OP_SETCLIENTID_CONFIRM); | |
1142 | WRITE64(client_state->cl_clientid); | |
1143 | WRITEMEM(client_state->cl_confirm.data, sizeof(client_state->cl_confirm.data)); | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | static int encode_write(struct xdr_stream *xdr, const struct nfs_writeargs *args) | |
1149 | { | |
1150 | uint32_t *p; | |
1151 | ||
1152 | RESERVE_SPACE(4); | |
1153 | WRITE32(OP_WRITE); | |
1154 | ||
1155 | encode_stateid(xdr, args->context); | |
1156 | ||
1157 | RESERVE_SPACE(16); | |
1158 | WRITE64(args->offset); | |
1159 | WRITE32(args->stable); | |
1160 | WRITE32(args->count); | |
1161 | ||
1162 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); | |
1163 | ||
1164 | return 0; | |
1165 | } | |
1166 | ||
1167 | static int encode_delegreturn(struct xdr_stream *xdr, const nfs4_stateid *stateid) | |
1168 | { | |
1169 | uint32_t *p; | |
1170 | ||
1171 | RESERVE_SPACE(20); | |
1172 | ||
1173 | WRITE32(OP_DELEGRETURN); | |
1174 | WRITEMEM(stateid->data, sizeof(stateid->data)); | |
1175 | return 0; | |
1176 | ||
1177 | } | |
1178 | /* | |
1179 | * END OF "GENERIC" ENCODE ROUTINES. | |
1180 | */ | |
1181 | ||
1182 | /* | |
1183 | * Encode an ACCESS request | |
1184 | */ | |
1185 | static int nfs4_xdr_enc_access(struct rpc_rqst *req, uint32_t *p, const struct nfs4_accessargs *args) | |
1186 | { | |
1187 | struct xdr_stream xdr; | |
1188 | struct compound_hdr hdr = { | |
1189 | .nops = 2, | |
1190 | }; | |
1191 | int status; | |
1192 | ||
1193 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1194 | encode_compound_hdr(&xdr, &hdr); | |
1195 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1196 | status = encode_access(&xdr, args->access); | |
1197 | return status; | |
1198 | } | |
1199 | ||
1200 | /* | |
1201 | * Encode LOOKUP request | |
1202 | */ | |
1203 | static int nfs4_xdr_enc_lookup(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_arg *args) | |
1204 | { | |
1205 | struct xdr_stream xdr; | |
1206 | struct compound_hdr hdr = { | |
1207 | .nops = 4, | |
1208 | }; | |
1209 | int status; | |
1210 | ||
1211 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1212 | encode_compound_hdr(&xdr, &hdr); | |
1213 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1214 | goto out; | |
1215 | if ((status = encode_lookup(&xdr, args->name)) != 0) | |
1216 | goto out; | |
1217 | if ((status = encode_getfh(&xdr)) != 0) | |
1218 | goto out; | |
1219 | status = encode_getfattr(&xdr, args->bitmask); | |
1220 | out: | |
1221 | return status; | |
1222 | } | |
1223 | ||
1224 | /* | |
1225 | * Encode LOOKUP_ROOT request | |
1226 | */ | |
1227 | static int nfs4_xdr_enc_lookup_root(struct rpc_rqst *req, uint32_t *p, const struct nfs4_lookup_root_arg *args) | |
1228 | { | |
1229 | struct xdr_stream xdr; | |
1230 | struct compound_hdr hdr = { | |
1231 | .nops = 3, | |
1232 | }; | |
1233 | int status; | |
1234 | ||
1235 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1236 | encode_compound_hdr(&xdr, &hdr); | |
1237 | if ((status = encode_putrootfh(&xdr)) != 0) | |
1238 | goto out; | |
1239 | if ((status = encode_getfh(&xdr)) == 0) | |
1240 | status = encode_getfattr(&xdr, args->bitmask); | |
1241 | out: | |
1242 | return status; | |
1243 | } | |
1244 | ||
1245 | /* | |
1246 | * Encode REMOVE request | |
1247 | */ | |
1248 | static int nfs4_xdr_enc_remove(struct rpc_rqst *req, uint32_t *p, const struct nfs4_remove_arg *args) | |
1249 | { | |
1250 | struct xdr_stream xdr; | |
1251 | struct compound_hdr hdr = { | |
1252 | .nops = 2, | |
1253 | }; | |
1254 | int status; | |
1255 | ||
1256 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1257 | encode_compound_hdr(&xdr, &hdr); | |
1258 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1259 | status = encode_remove(&xdr, args->name); | |
1260 | return status; | |
1261 | } | |
1262 | ||
1263 | /* | |
1264 | * Encode RENAME request | |
1265 | */ | |
1266 | static int nfs4_xdr_enc_rename(struct rpc_rqst *req, uint32_t *p, const struct nfs4_rename_arg *args) | |
1267 | { | |
1268 | struct xdr_stream xdr; | |
1269 | struct compound_hdr hdr = { | |
1270 | .nops = 4, | |
1271 | }; | |
1272 | int status; | |
1273 | ||
1274 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1275 | encode_compound_hdr(&xdr, &hdr); | |
1276 | if ((status = encode_putfh(&xdr, args->old_dir)) != 0) | |
1277 | goto out; | |
1278 | if ((status = encode_savefh(&xdr)) != 0) | |
1279 | goto out; | |
1280 | if ((status = encode_putfh(&xdr, args->new_dir)) != 0) | |
1281 | goto out; | |
1282 | status = encode_rename(&xdr, args->old_name, args->new_name); | |
1283 | out: | |
1284 | return status; | |
1285 | } | |
1286 | ||
1287 | /* | |
1288 | * Encode LINK request | |
1289 | */ | |
1290 | static int nfs4_xdr_enc_link(struct rpc_rqst *req, uint32_t *p, const struct nfs4_link_arg *args) | |
1291 | { | |
1292 | struct xdr_stream xdr; | |
1293 | struct compound_hdr hdr = { | |
1294 | .nops = 4, | |
1295 | }; | |
1296 | int status; | |
1297 | ||
1298 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1299 | encode_compound_hdr(&xdr, &hdr); | |
1300 | if ((status = encode_putfh(&xdr, args->fh)) != 0) | |
1301 | goto out; | |
1302 | if ((status = encode_savefh(&xdr)) != 0) | |
1303 | goto out; | |
1304 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1305 | goto out; | |
1306 | status = encode_link(&xdr, args->name); | |
1307 | out: | |
1308 | return status; | |
1309 | } | |
1310 | ||
1311 | /* | |
1312 | * Encode CREATE request | |
1313 | */ | |
1314 | static int nfs4_xdr_enc_create(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1315 | { | |
1316 | struct xdr_stream xdr; | |
1317 | struct compound_hdr hdr = { | |
1318 | .nops = 4, | |
1319 | }; | |
1320 | int status; | |
1321 | ||
1322 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1323 | encode_compound_hdr(&xdr, &hdr); | |
1324 | if ((status = encode_putfh(&xdr, args->dir_fh)) != 0) | |
1325 | goto out; | |
1326 | if ((status = encode_create(&xdr, args)) != 0) | |
1327 | goto out; | |
1328 | if ((status = encode_getfh(&xdr)) != 0) | |
1329 | goto out; | |
1330 | status = encode_getfattr(&xdr, args->bitmask); | |
1331 | out: | |
1332 | return status; | |
1333 | } | |
1334 | ||
1335 | /* | |
1336 | * Encode SYMLINK request | |
1337 | */ | |
1338 | static int nfs4_xdr_enc_symlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_create_arg *args) | |
1339 | { | |
1340 | return nfs4_xdr_enc_create(req, p, args); | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * Encode GETATTR request | |
1345 | */ | |
1346 | static int nfs4_xdr_enc_getattr(struct rpc_rqst *req, uint32_t *p, const struct nfs4_getattr_arg *args) | |
1347 | { | |
1348 | struct xdr_stream xdr; | |
1349 | struct compound_hdr hdr = { | |
1350 | .nops = 2, | |
1351 | }; | |
1352 | int status; | |
1353 | ||
1354 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1355 | encode_compound_hdr(&xdr, &hdr); | |
1356 | if ((status = encode_putfh(&xdr, args->fh)) == 0) | |
1357 | status = encode_getfattr(&xdr, args->bitmask); | |
1358 | return status; | |
1359 | } | |
1360 | ||
1361 | /* | |
1362 | * Encode a CLOSE request | |
1363 | */ | |
1364 | static int nfs4_xdr_enc_close(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1365 | { | |
1366 | struct xdr_stream xdr; | |
1367 | struct compound_hdr hdr = { | |
1368 | .nops = 2, | |
1369 | }; | |
1370 | int status; | |
1371 | ||
1372 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1373 | encode_compound_hdr(&xdr, &hdr); | |
1374 | status = encode_putfh(&xdr, args->fh); | |
1375 | if(status) | |
1376 | goto out; | |
1377 | status = encode_close(&xdr, args); | |
1378 | out: | |
1379 | return status; | |
1380 | } | |
1381 | ||
1382 | /* | |
1383 | * Encode an OPEN request | |
1384 | */ | |
1385 | static int nfs4_xdr_enc_open(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1386 | { | |
1387 | struct xdr_stream xdr; | |
1388 | struct compound_hdr hdr = { | |
1389 | .nops = 4, | |
1390 | }; | |
1391 | int status; | |
1392 | ||
1393 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1394 | encode_compound_hdr(&xdr, &hdr); | |
1395 | status = encode_putfh(&xdr, args->fh); | |
1396 | if (status) | |
1397 | goto out; | |
1398 | status = encode_open(&xdr, args); | |
1399 | if (status) | |
1400 | goto out; | |
1401 | status = encode_getfh(&xdr); | |
1402 | if (status) | |
1403 | goto out; | |
1404 | status = encode_getfattr(&xdr, args->bitmask); | |
1405 | out: | |
1406 | return status; | |
1407 | } | |
1408 | ||
1409 | /* | |
1410 | * Encode an OPEN_CONFIRM request | |
1411 | */ | |
1412 | static int nfs4_xdr_enc_open_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_open_confirmargs *args) | |
1413 | { | |
1414 | struct xdr_stream xdr; | |
1415 | struct compound_hdr hdr = { | |
1416 | .nops = 2, | |
1417 | }; | |
1418 | int status; | |
1419 | ||
1420 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1421 | encode_compound_hdr(&xdr, &hdr); | |
1422 | status = encode_putfh(&xdr, args->fh); | |
1423 | if(status) | |
1424 | goto out; | |
1425 | status = encode_open_confirm(&xdr, args); | |
1426 | out: | |
1427 | return status; | |
1428 | } | |
1429 | ||
1430 | /* | |
1431 | * Encode an OPEN request with no attributes. | |
1432 | */ | |
1433 | static int nfs4_xdr_enc_open_noattr(struct rpc_rqst *req, uint32_t *p, struct nfs_openargs *args) | |
1434 | { | |
1435 | struct xdr_stream xdr; | |
1436 | struct compound_hdr hdr = { | |
1437 | .nops = 2, | |
1438 | }; | |
1439 | int status; | |
1440 | ||
1441 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1442 | encode_compound_hdr(&xdr, &hdr); | |
1443 | status = encode_putfh(&xdr, args->fh); | |
1444 | if (status) | |
1445 | goto out; | |
1446 | status = encode_open(&xdr, args); | |
1447 | out: | |
1448 | return status; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * Encode an OPEN_DOWNGRADE request | |
1453 | */ | |
1454 | static int nfs4_xdr_enc_open_downgrade(struct rpc_rqst *req, uint32_t *p, struct nfs_closeargs *args) | |
1455 | { | |
1456 | struct xdr_stream xdr; | |
1457 | struct compound_hdr hdr = { | |
1458 | .nops = 2, | |
1459 | }; | |
1460 | int status; | |
1461 | ||
1462 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1463 | encode_compound_hdr(&xdr, &hdr); | |
1464 | status = encode_putfh(&xdr, args->fh); | |
1465 | if (status) | |
1466 | goto out; | |
1467 | status = encode_open_downgrade(&xdr, args); | |
1468 | out: | |
1469 | return status; | |
1470 | } | |
1471 | ||
1472 | /* | |
1473 | * Encode a LOCK request | |
1474 | */ | |
1475 | static int nfs4_xdr_enc_lock(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1476 | { | |
1477 | struct xdr_stream xdr; | |
1478 | struct compound_hdr hdr = { | |
1479 | .nops = 2, | |
1480 | }; | |
1481 | int status; | |
1482 | ||
1483 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1484 | encode_compound_hdr(&xdr, &hdr); | |
1485 | status = encode_putfh(&xdr, args->fh); | |
1486 | if(status) | |
1487 | goto out; | |
1488 | status = encode_lock(&xdr, args); | |
1489 | out: | |
1490 | return status; | |
1491 | } | |
1492 | ||
1493 | /* | |
1494 | * Encode a LOCKT request | |
1495 | */ | |
1496 | static int nfs4_xdr_enc_lockt(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1497 | { | |
1498 | struct xdr_stream xdr; | |
1499 | struct compound_hdr hdr = { | |
1500 | .nops = 2, | |
1501 | }; | |
1502 | int status; | |
1503 | ||
1504 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1505 | encode_compound_hdr(&xdr, &hdr); | |
1506 | status = encode_putfh(&xdr, args->fh); | |
1507 | if(status) | |
1508 | goto out; | |
1509 | status = encode_lockt(&xdr, args); | |
1510 | out: | |
1511 | return status; | |
1512 | } | |
1513 | ||
1514 | /* | |
1515 | * Encode a LOCKU request | |
1516 | */ | |
1517 | static int nfs4_xdr_enc_locku(struct rpc_rqst *req, uint32_t *p, struct nfs_lockargs *args) | |
1518 | { | |
1519 | struct xdr_stream xdr; | |
1520 | struct compound_hdr hdr = { | |
1521 | .nops = 2, | |
1522 | }; | |
1523 | int status; | |
1524 | ||
1525 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1526 | encode_compound_hdr(&xdr, &hdr); | |
1527 | status = encode_putfh(&xdr, args->fh); | |
1528 | if(status) | |
1529 | goto out; | |
1530 | status = encode_locku(&xdr, args); | |
1531 | out: | |
1532 | return status; | |
1533 | } | |
1534 | ||
1535 | /* | |
1536 | * Encode a READLINK request | |
1537 | */ | |
1538 | static int nfs4_xdr_enc_readlink(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readlink *args) | |
1539 | { | |
1540 | struct xdr_stream xdr; | |
1541 | struct compound_hdr hdr = { | |
1542 | .nops = 2, | |
1543 | }; | |
1544 | int status; | |
1545 | ||
1546 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1547 | encode_compound_hdr(&xdr, &hdr); | |
1548 | status = encode_putfh(&xdr, args->fh); | |
1549 | if(status) | |
1550 | goto out; | |
1551 | status = encode_readlink(&xdr, args, req); | |
1552 | out: | |
1553 | return status; | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * Encode a READDIR request | |
1558 | */ | |
1559 | static int nfs4_xdr_enc_readdir(struct rpc_rqst *req, uint32_t *p, const struct nfs4_readdir_arg *args) | |
1560 | { | |
1561 | struct xdr_stream xdr; | |
1562 | struct compound_hdr hdr = { | |
1563 | .nops = 2, | |
1564 | }; | |
1565 | int status; | |
1566 | ||
1567 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1568 | encode_compound_hdr(&xdr, &hdr); | |
1569 | status = encode_putfh(&xdr, args->fh); | |
1570 | if(status) | |
1571 | goto out; | |
1572 | status = encode_readdir(&xdr, args, req); | |
1573 | out: | |
1574 | return status; | |
1575 | } | |
1576 | ||
1577 | /* | |
1578 | * Encode a READ request | |
1579 | */ | |
1580 | static int nfs4_xdr_enc_read(struct rpc_rqst *req, uint32_t *p, struct nfs_readargs *args) | |
1581 | { | |
1582 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
1583 | struct xdr_stream xdr; | |
1584 | struct compound_hdr hdr = { | |
1585 | .nops = 2, | |
1586 | }; | |
1587 | int replen, status; | |
1588 | ||
1589 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1590 | encode_compound_hdr(&xdr, &hdr); | |
1591 | status = encode_putfh(&xdr, args->fh); | |
1592 | if (status) | |
1593 | goto out; | |
1594 | status = encode_read(&xdr, args); | |
1595 | if (status) | |
1596 | goto out; | |
1597 | ||
1598 | /* set up reply kvec | |
1599 | * toplevel status + taglen=0 + rescount + OP_PUTFH + status | |
1600 | * + OP_READ + status + eof + datalen = 9 | |
1601 | */ | |
1602 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS4_dec_read_sz) << 2; | |
1603 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
1604 | args->pages, args->pgbase, args->count); | |
1605 | out: | |
1606 | return status; | |
1607 | } | |
1608 | ||
1609 | /* | |
1610 | * Encode an SETATTR request | |
1611 | */ | |
1612 | static int nfs4_xdr_enc_setattr(struct rpc_rqst *req, uint32_t *p, struct nfs_setattrargs *args) | |
1613 | ||
1614 | { | |
1615 | struct xdr_stream xdr; | |
1616 | struct compound_hdr hdr = { | |
1617 | .nops = 3, | |
1618 | }; | |
1619 | int status; | |
1620 | ||
1621 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1622 | encode_compound_hdr(&xdr, &hdr); | |
1623 | status = encode_putfh(&xdr, args->fh); | |
1624 | if(status) | |
1625 | goto out; | |
1626 | status = encode_setattr(&xdr, args, args->server); | |
1627 | if(status) | |
1628 | goto out; | |
1629 | status = encode_getfattr(&xdr, args->bitmask); | |
1630 | out: | |
1631 | return status; | |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * Encode a WRITE request | |
1636 | */ | |
1637 | static int nfs4_xdr_enc_write(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1638 | { | |
1639 | struct xdr_stream xdr; | |
1640 | struct compound_hdr hdr = { | |
1641 | .nops = 2, | |
1642 | }; | |
1643 | int status; | |
1644 | ||
1645 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1646 | encode_compound_hdr(&xdr, &hdr); | |
1647 | status = encode_putfh(&xdr, args->fh); | |
1648 | if (status) | |
1649 | goto out; | |
1650 | status = encode_write(&xdr, args); | |
1651 | out: | |
1652 | return status; | |
1653 | } | |
1654 | ||
1655 | /* | |
1656 | * a COMMIT request | |
1657 | */ | |
1658 | static int nfs4_xdr_enc_commit(struct rpc_rqst *req, uint32_t *p, struct nfs_writeargs *args) | |
1659 | { | |
1660 | struct xdr_stream xdr; | |
1661 | struct compound_hdr hdr = { | |
1662 | .nops = 2, | |
1663 | }; | |
1664 | int status; | |
1665 | ||
1666 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1667 | encode_compound_hdr(&xdr, &hdr); | |
1668 | status = encode_putfh(&xdr, args->fh); | |
1669 | if (status) | |
1670 | goto out; | |
1671 | status = encode_commit(&xdr, args); | |
1672 | out: | |
1673 | return status; | |
1674 | } | |
1675 | ||
1676 | /* | |
1677 | * FSINFO request | |
1678 | */ | |
1679 | static int nfs4_xdr_enc_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs4_fsinfo_arg *args) | |
1680 | { | |
1681 | struct xdr_stream xdr; | |
1682 | struct compound_hdr hdr = { | |
1683 | .nops = 2, | |
1684 | }; | |
1685 | int status; | |
1686 | ||
1687 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1688 | encode_compound_hdr(&xdr, &hdr); | |
1689 | status = encode_putfh(&xdr, args->fh); | |
1690 | if (!status) | |
1691 | status = encode_fsinfo(&xdr, args->bitmask); | |
1692 | return status; | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * a PATHCONF request | |
1697 | */ | |
1698 | static int nfs4_xdr_enc_pathconf(struct rpc_rqst *req, uint32_t *p, const struct nfs4_pathconf_arg *args) | |
1699 | { | |
1700 | extern u32 nfs4_pathconf_bitmap[2]; | |
1701 | struct xdr_stream xdr; | |
1702 | struct compound_hdr hdr = { | |
1703 | .nops = 2, | |
1704 | }; | |
1705 | int status; | |
1706 | ||
1707 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1708 | encode_compound_hdr(&xdr, &hdr); | |
1709 | status = encode_putfh(&xdr, args->fh); | |
1710 | if (!status) | |
1711 | status = encode_getattr_one(&xdr, | |
1712 | args->bitmask[0] & nfs4_pathconf_bitmap[0]); | |
1713 | return status; | |
1714 | } | |
1715 | ||
1716 | /* | |
1717 | * a STATFS request | |
1718 | */ | |
1719 | static int nfs4_xdr_enc_statfs(struct rpc_rqst *req, uint32_t *p, const struct nfs4_statfs_arg *args) | |
1720 | { | |
1721 | extern u32 nfs4_statfs_bitmap[]; | |
1722 | struct xdr_stream xdr; | |
1723 | struct compound_hdr hdr = { | |
1724 | .nops = 2, | |
1725 | }; | |
1726 | int status; | |
1727 | ||
1728 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1729 | encode_compound_hdr(&xdr, &hdr); | |
1730 | status = encode_putfh(&xdr, args->fh); | |
1731 | if (status == 0) | |
1732 | status = encode_getattr_two(&xdr, | |
1733 | args->bitmask[0] & nfs4_statfs_bitmap[0], | |
1734 | args->bitmask[1] & nfs4_statfs_bitmap[1]); | |
1735 | return status; | |
1736 | } | |
1737 | ||
1738 | /* | |
1739 | * GETATTR_BITMAP request | |
1740 | */ | |
1741 | static int nfs4_xdr_enc_server_caps(struct rpc_rqst *req, uint32_t *p, const struct nfs_fh *fhandle) | |
1742 | { | |
1743 | struct xdr_stream xdr; | |
1744 | struct compound_hdr hdr = { | |
1745 | .nops = 2, | |
1746 | }; | |
1747 | int status; | |
1748 | ||
1749 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1750 | encode_compound_hdr(&xdr, &hdr); | |
1751 | status = encode_putfh(&xdr, fhandle); | |
1752 | if (status == 0) | |
1753 | status = encode_getattr_one(&xdr, FATTR4_WORD0_SUPPORTED_ATTRS| | |
1754 | FATTR4_WORD0_LINK_SUPPORT| | |
1755 | FATTR4_WORD0_SYMLINK_SUPPORT| | |
1756 | FATTR4_WORD0_ACLSUPPORT); | |
1757 | return status; | |
1758 | } | |
1759 | ||
1760 | /* | |
1761 | * a RENEW request | |
1762 | */ | |
1763 | static int nfs4_xdr_enc_renew(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1764 | { | |
1765 | struct xdr_stream xdr; | |
1766 | struct compound_hdr hdr = { | |
1767 | .nops = 1, | |
1768 | }; | |
1769 | ||
1770 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1771 | encode_compound_hdr(&xdr, &hdr); | |
1772 | return encode_renew(&xdr, clp); | |
1773 | } | |
1774 | ||
1775 | /* | |
1776 | * a SETCLIENTID request | |
1777 | */ | |
1778 | static int nfs4_xdr_enc_setclientid(struct rpc_rqst *req, uint32_t *p, struct nfs4_setclientid *sc) | |
1779 | { | |
1780 | struct xdr_stream xdr; | |
1781 | struct compound_hdr hdr = { | |
1782 | .nops = 1, | |
1783 | }; | |
1784 | ||
1785 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1786 | encode_compound_hdr(&xdr, &hdr); | |
1787 | return encode_setclientid(&xdr, sc); | |
1788 | } | |
1789 | ||
1790 | /* | |
1791 | * a SETCLIENTID_CONFIRM request | |
1792 | */ | |
1793 | static int nfs4_xdr_enc_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs4_client *clp) | |
1794 | { | |
1795 | struct xdr_stream xdr; | |
1796 | struct compound_hdr hdr = { | |
1797 | .nops = 3, | |
1798 | }; | |
1799 | const u32 lease_bitmap[2] = { FATTR4_WORD0_LEASE_TIME, 0 }; | |
1800 | int status; | |
1801 | ||
1802 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1803 | encode_compound_hdr(&xdr, &hdr); | |
1804 | status = encode_setclientid_confirm(&xdr, clp); | |
1805 | if (!status) | |
1806 | status = encode_putrootfh(&xdr); | |
1807 | if (!status) | |
1808 | status = encode_fsinfo(&xdr, lease_bitmap); | |
1809 | return status; | |
1810 | } | |
1811 | ||
1812 | /* | |
1813 | * DELEGRETURN request | |
1814 | */ | |
1815 | static int nfs4_xdr_enc_delegreturn(struct rpc_rqst *req, uint32_t *p, const struct nfs4_delegreturnargs *args) | |
1816 | { | |
1817 | struct xdr_stream xdr; | |
1818 | struct compound_hdr hdr = { | |
1819 | .nops = 2, | |
1820 | }; | |
1821 | int status; | |
1822 | ||
1823 | xdr_init_encode(&xdr, &req->rq_snd_buf, p); | |
1824 | encode_compound_hdr(&xdr, &hdr); | |
1825 | if ((status = encode_putfh(&xdr, args->fhandle)) == 0) | |
1826 | status = encode_delegreturn(&xdr, args->stateid); | |
1827 | return status; | |
1828 | } | |
1829 | ||
1830 | /* | |
1831 | * START OF "GENERIC" DECODE ROUTINES. | |
1832 | * These may look a little ugly since they are imported from a "generic" | |
1833 | * set of XDR encode/decode routines which are intended to be shared by | |
1834 | * all of our NFSv4 implementations (OpenBSD, MacOS X...). | |
1835 | * | |
1836 | * If the pain of reading these is too great, it should be a straightforward | |
1837 | * task to translate them into Linux-specific versions which are more | |
1838 | * consistent with the style used in NFSv2/v3... | |
1839 | */ | |
1840 | #define READ32(x) (x) = ntohl(*p++) | |
1841 | #define READ64(x) do { \ | |
1842 | (x) = (u64)ntohl(*p++) << 32; \ | |
1843 | (x) |= ntohl(*p++); \ | |
1844 | } while (0) | |
1845 | #define READTIME(x) do { \ | |
1846 | p++; \ | |
1847 | (x.tv_sec) = ntohl(*p++); \ | |
1848 | (x.tv_nsec) = ntohl(*p++); \ | |
1849 | } while (0) | |
1850 | #define COPYMEM(x,nbytes) do { \ | |
1851 | memcpy((x), p, nbytes); \ | |
1852 | p += XDR_QUADLEN(nbytes); \ | |
1853 | } while (0) | |
1854 | ||
1855 | #define READ_BUF(nbytes) do { \ | |
1856 | p = xdr_inline_decode(xdr, nbytes); \ | |
1857 | if (!p) { \ | |
1858 | printk(KERN_WARNING "%s: reply buffer overflowed in line %d.", \ | |
1859 | __FUNCTION__, __LINE__); \ | |
1860 | return -EIO; \ | |
1861 | } \ | |
1862 | } while (0) | |
1863 | ||
1864 | static int decode_opaque_inline(struct xdr_stream *xdr, uint32_t *len, char **string) | |
1865 | { | |
1866 | uint32_t *p; | |
1867 | ||
1868 | READ_BUF(4); | |
1869 | READ32(*len); | |
1870 | READ_BUF(*len); | |
1871 | *string = (char *)p; | |
1872 | return 0; | |
1873 | } | |
1874 | ||
1875 | static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) | |
1876 | { | |
1877 | uint32_t *p; | |
1878 | ||
1879 | READ_BUF(8); | |
1880 | READ32(hdr->status); | |
1881 | READ32(hdr->taglen); | |
1882 | ||
1883 | READ_BUF(hdr->taglen + 4); | |
1884 | hdr->tag = (char *)p; | |
1885 | p += XDR_QUADLEN(hdr->taglen); | |
1886 | READ32(hdr->nops); | |
1887 | return 0; | |
1888 | } | |
1889 | ||
1890 | static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) | |
1891 | { | |
1892 | uint32_t *p; | |
1893 | uint32_t opnum; | |
1894 | int32_t nfserr; | |
1895 | ||
1896 | READ_BUF(8); | |
1897 | READ32(opnum); | |
1898 | if (opnum != expected) { | |
1899 | printk(KERN_NOTICE | |
1900 | "nfs4_decode_op_hdr: Server returned operation" | |
1901 | " %d but we issued a request for %d\n", | |
1902 | opnum, expected); | |
1903 | return -EIO; | |
1904 | } | |
1905 | READ32(nfserr); | |
1906 | if (nfserr != NFS_OK) | |
1907 | return -nfs_stat_to_errno(nfserr); | |
1908 | return 0; | |
1909 | } | |
1910 | ||
1911 | /* Dummy routine */ | |
1912 | static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs4_client *clp) | |
1913 | { | |
1914 | uint32_t *p; | |
1915 | uint32_t strlen; | |
1916 | char *str; | |
1917 | ||
1918 | READ_BUF(12); | |
1919 | return decode_opaque_inline(xdr, &strlen, &str); | |
1920 | } | |
1921 | ||
1922 | static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) | |
1923 | { | |
1924 | uint32_t bmlen, *p; | |
1925 | ||
1926 | READ_BUF(4); | |
1927 | READ32(bmlen); | |
1928 | ||
1929 | bitmap[0] = bitmap[1] = 0; | |
1930 | READ_BUF((bmlen << 2)); | |
1931 | if (bmlen > 0) { | |
1932 | READ32(bitmap[0]); | |
1933 | if (bmlen > 1) | |
1934 | READ32(bitmap[1]); | |
1935 | } | |
1936 | return 0; | |
1937 | } | |
1938 | ||
1939 | static inline int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, uint32_t **savep) | |
1940 | { | |
1941 | uint32_t *p; | |
1942 | ||
1943 | READ_BUF(4); | |
1944 | READ32(*attrlen); | |
1945 | *savep = xdr->p; | |
1946 | return 0; | |
1947 | } | |
1948 | ||
1949 | static int decode_attr_supported(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *bitmask) | |
1950 | { | |
1951 | if (likely(bitmap[0] & FATTR4_WORD0_SUPPORTED_ATTRS)) { | |
1952 | decode_attr_bitmap(xdr, bitmask); | |
1953 | bitmap[0] &= ~FATTR4_WORD0_SUPPORTED_ATTRS; | |
1954 | } else | |
1955 | bitmask[0] = bitmask[1] = 0; | |
1956 | dprintk("%s: bitmask=0x%x%x\n", __FUNCTION__, bitmask[0], bitmask[1]); | |
1957 | return 0; | |
1958 | } | |
1959 | ||
1960 | static int decode_attr_type(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *type) | |
1961 | { | |
1962 | uint32_t *p; | |
1963 | ||
1964 | *type = 0; | |
1965 | if (unlikely(bitmap[0] & (FATTR4_WORD0_TYPE - 1U))) | |
1966 | return -EIO; | |
1967 | if (likely(bitmap[0] & FATTR4_WORD0_TYPE)) { | |
1968 | READ_BUF(4); | |
1969 | READ32(*type); | |
1970 | if (*type < NF4REG || *type > NF4NAMEDATTR) { | |
1971 | dprintk("%s: bad type %d\n", __FUNCTION__, *type); | |
1972 | return -EIO; | |
1973 | } | |
1974 | bitmap[0] &= ~FATTR4_WORD0_TYPE; | |
1975 | } | |
1976 | dprintk("%s: type=0%o\n", __FUNCTION__, nfs_type2fmt[*type].nfs2type); | |
1977 | return 0; | |
1978 | } | |
1979 | ||
1980 | static int decode_attr_change(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *change) | |
1981 | { | |
1982 | uint32_t *p; | |
1983 | ||
1984 | *change = 0; | |
1985 | if (unlikely(bitmap[0] & (FATTR4_WORD0_CHANGE - 1U))) | |
1986 | return -EIO; | |
1987 | if (likely(bitmap[0] & FATTR4_WORD0_CHANGE)) { | |
1988 | READ_BUF(8); | |
1989 | READ64(*change); | |
1990 | bitmap[0] &= ~FATTR4_WORD0_CHANGE; | |
1991 | } | |
1992 | dprintk("%s: change attribute=%Lu\n", __FUNCTION__, | |
1993 | (unsigned long long)*change); | |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | static int decode_attr_size(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *size) | |
1998 | { | |
1999 | uint32_t *p; | |
2000 | ||
2001 | *size = 0; | |
2002 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SIZE - 1U))) | |
2003 | return -EIO; | |
2004 | if (likely(bitmap[0] & FATTR4_WORD0_SIZE)) { | |
2005 | READ_BUF(8); | |
2006 | READ64(*size); | |
2007 | bitmap[0] &= ~FATTR4_WORD0_SIZE; | |
2008 | } | |
2009 | dprintk("%s: file size=%Lu\n", __FUNCTION__, (unsigned long long)*size); | |
2010 | return 0; | |
2011 | } | |
2012 | ||
2013 | static int decode_attr_link_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2014 | { | |
2015 | uint32_t *p; | |
2016 | ||
2017 | *res = 0; | |
2018 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LINK_SUPPORT - 1U))) | |
2019 | return -EIO; | |
2020 | if (likely(bitmap[0] & FATTR4_WORD0_LINK_SUPPORT)) { | |
2021 | READ_BUF(4); | |
2022 | READ32(*res); | |
2023 | bitmap[0] &= ~FATTR4_WORD0_LINK_SUPPORT; | |
2024 | } | |
2025 | dprintk("%s: link support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2026 | return 0; | |
2027 | } | |
2028 | ||
2029 | static int decode_attr_symlink_support(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2030 | { | |
2031 | uint32_t *p; | |
2032 | ||
2033 | *res = 0; | |
2034 | if (unlikely(bitmap[0] & (FATTR4_WORD0_SYMLINK_SUPPORT - 1U))) | |
2035 | return -EIO; | |
2036 | if (likely(bitmap[0] & FATTR4_WORD0_SYMLINK_SUPPORT)) { | |
2037 | READ_BUF(4); | |
2038 | READ32(*res); | |
2039 | bitmap[0] &= ~FATTR4_WORD0_SYMLINK_SUPPORT; | |
2040 | } | |
2041 | dprintk("%s: symlink support=%s\n", __FUNCTION__, *res == 0 ? "false" : "true"); | |
2042 | return 0; | |
2043 | } | |
2044 | ||
2045 | static int decode_attr_fsid(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_fsid *fsid) | |
2046 | { | |
2047 | uint32_t *p; | |
2048 | ||
2049 | fsid->major = 0; | |
2050 | fsid->minor = 0; | |
2051 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FSID - 1U))) | |
2052 | return -EIO; | |
2053 | if (likely(bitmap[0] & FATTR4_WORD0_FSID)) { | |
2054 | READ_BUF(16); | |
2055 | READ64(fsid->major); | |
2056 | READ64(fsid->minor); | |
2057 | bitmap[0] &= ~FATTR4_WORD0_FSID; | |
2058 | } | |
2059 | dprintk("%s: fsid=(0x%Lx/0x%Lx)\n", __FUNCTION__, | |
2060 | (unsigned long long)fsid->major, | |
2061 | (unsigned long long)fsid->minor); | |
2062 | return 0; | |
2063 | } | |
2064 | ||
2065 | static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2066 | { | |
2067 | uint32_t *p; | |
2068 | ||
2069 | *res = 60; | |
2070 | if (unlikely(bitmap[0] & (FATTR4_WORD0_LEASE_TIME - 1U))) | |
2071 | return -EIO; | |
2072 | if (likely(bitmap[0] & FATTR4_WORD0_LEASE_TIME)) { | |
2073 | READ_BUF(4); | |
2074 | READ32(*res); | |
2075 | bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; | |
2076 | } | |
2077 | dprintk("%s: file size=%u\n", __FUNCTION__, (unsigned int)*res); | |
2078 | return 0; | |
2079 | } | |
2080 | ||
2081 | static int decode_attr_aclsupport(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2082 | { | |
2083 | uint32_t *p; | |
2084 | ||
2085 | *res = ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL; | |
2086 | if (unlikely(bitmap[0] & (FATTR4_WORD0_ACLSUPPORT - 1U))) | |
2087 | return -EIO; | |
2088 | if (likely(bitmap[0] & FATTR4_WORD0_ACLSUPPORT)) { | |
2089 | READ_BUF(4); | |
2090 | READ32(*res); | |
2091 | bitmap[0] &= ~FATTR4_WORD0_ACLSUPPORT; | |
2092 | } | |
2093 | dprintk("%s: ACLs supported=%u\n", __FUNCTION__, (unsigned int)*res); | |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | static int decode_attr_fileid(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *fileid) | |
2098 | { | |
2099 | uint32_t *p; | |
2100 | ||
2101 | *fileid = 0; | |
2102 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILEID - 1U))) | |
2103 | return -EIO; | |
2104 | if (likely(bitmap[0] & FATTR4_WORD0_FILEID)) { | |
2105 | READ_BUF(8); | |
2106 | READ64(*fileid); | |
2107 | bitmap[0] &= ~FATTR4_WORD0_FILEID; | |
2108 | } | |
2109 | dprintk("%s: fileid=%Lu\n", __FUNCTION__, (unsigned long long)*fileid); | |
2110 | return 0; | |
2111 | } | |
2112 | ||
2113 | static int decode_attr_files_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2114 | { | |
2115 | uint32_t *p; | |
2116 | int status = 0; | |
2117 | ||
2118 | *res = 0; | |
2119 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_AVAIL - 1U))) | |
2120 | return -EIO; | |
2121 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_AVAIL)) { | |
2122 | READ_BUF(8); | |
2123 | READ64(*res); | |
2124 | bitmap[0] &= ~FATTR4_WORD0_FILES_AVAIL; | |
2125 | } | |
2126 | dprintk("%s: files avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2127 | return status; | |
2128 | } | |
2129 | ||
2130 | static int decode_attr_files_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2131 | { | |
2132 | uint32_t *p; | |
2133 | int status = 0; | |
2134 | ||
2135 | *res = 0; | |
2136 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_FREE - 1U))) | |
2137 | return -EIO; | |
2138 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_FREE)) { | |
2139 | READ_BUF(8); | |
2140 | READ64(*res); | |
2141 | bitmap[0] &= ~FATTR4_WORD0_FILES_FREE; | |
2142 | } | |
2143 | dprintk("%s: files free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2144 | return status; | |
2145 | } | |
2146 | ||
2147 | static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2148 | { | |
2149 | uint32_t *p; | |
2150 | int status = 0; | |
2151 | ||
2152 | *res = 0; | |
2153 | if (unlikely(bitmap[0] & (FATTR4_WORD0_FILES_TOTAL - 1U))) | |
2154 | return -EIO; | |
2155 | if (likely(bitmap[0] & FATTR4_WORD0_FILES_TOTAL)) { | |
2156 | READ_BUF(8); | |
2157 | READ64(*res); | |
2158 | bitmap[0] &= ~FATTR4_WORD0_FILES_TOTAL; | |
2159 | } | |
2160 | dprintk("%s: files total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2161 | return status; | |
2162 | } | |
2163 | ||
2164 | static int decode_attr_maxfilesize(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2165 | { | |
2166 | uint32_t *p; | |
2167 | int status = 0; | |
2168 | ||
2169 | *res = 0; | |
2170 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXFILESIZE - 1U))) | |
2171 | return -EIO; | |
2172 | if (likely(bitmap[0] & FATTR4_WORD0_MAXFILESIZE)) { | |
2173 | READ_BUF(8); | |
2174 | READ64(*res); | |
2175 | bitmap[0] &= ~FATTR4_WORD0_MAXFILESIZE; | |
2176 | } | |
2177 | dprintk("%s: maxfilesize=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2178 | return status; | |
2179 | } | |
2180 | ||
2181 | static int decode_attr_maxlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxlink) | |
2182 | { | |
2183 | uint32_t *p; | |
2184 | int status = 0; | |
2185 | ||
2186 | *maxlink = 1; | |
2187 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXLINK - 1U))) | |
2188 | return -EIO; | |
2189 | if (likely(bitmap[0] & FATTR4_WORD0_MAXLINK)) { | |
2190 | READ_BUF(4); | |
2191 | READ32(*maxlink); | |
2192 | bitmap[0] &= ~FATTR4_WORD0_MAXLINK; | |
2193 | } | |
2194 | dprintk("%s: maxlink=%u\n", __FUNCTION__, *maxlink); | |
2195 | return status; | |
2196 | } | |
2197 | ||
2198 | static int decode_attr_maxname(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *maxname) | |
2199 | { | |
2200 | uint32_t *p; | |
2201 | int status = 0; | |
2202 | ||
2203 | *maxname = 1024; | |
2204 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXNAME - 1U))) | |
2205 | return -EIO; | |
2206 | if (likely(bitmap[0] & FATTR4_WORD0_MAXNAME)) { | |
2207 | READ_BUF(4); | |
2208 | READ32(*maxname); | |
2209 | bitmap[0] &= ~FATTR4_WORD0_MAXNAME; | |
2210 | } | |
2211 | dprintk("%s: maxname=%u\n", __FUNCTION__, *maxname); | |
2212 | return status; | |
2213 | } | |
2214 | ||
2215 | static int decode_attr_maxread(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2216 | { | |
2217 | uint32_t *p; | |
2218 | int status = 0; | |
2219 | ||
2220 | *res = 1024; | |
2221 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXREAD - 1U))) | |
2222 | return -EIO; | |
2223 | if (likely(bitmap[0] & FATTR4_WORD0_MAXREAD)) { | |
2224 | uint64_t maxread; | |
2225 | READ_BUF(8); | |
2226 | READ64(maxread); | |
2227 | if (maxread > 0x7FFFFFFF) | |
2228 | maxread = 0x7FFFFFFF; | |
2229 | *res = (uint32_t)maxread; | |
2230 | bitmap[0] &= ~FATTR4_WORD0_MAXREAD; | |
2231 | } | |
2232 | dprintk("%s: maxread=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2233 | return status; | |
2234 | } | |
2235 | ||
2236 | static int decode_attr_maxwrite(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *res) | |
2237 | { | |
2238 | uint32_t *p; | |
2239 | int status = 0; | |
2240 | ||
2241 | *res = 1024; | |
2242 | if (unlikely(bitmap[0] & (FATTR4_WORD0_MAXWRITE - 1U))) | |
2243 | return -EIO; | |
2244 | if (likely(bitmap[0] & FATTR4_WORD0_MAXWRITE)) { | |
2245 | uint64_t maxwrite; | |
2246 | READ_BUF(8); | |
2247 | READ64(maxwrite); | |
2248 | if (maxwrite > 0x7FFFFFFF) | |
2249 | maxwrite = 0x7FFFFFFF; | |
2250 | *res = (uint32_t)maxwrite; | |
2251 | bitmap[0] &= ~FATTR4_WORD0_MAXWRITE; | |
2252 | } | |
2253 | dprintk("%s: maxwrite=%lu\n", __FUNCTION__, (unsigned long)*res); | |
2254 | return status; | |
2255 | } | |
2256 | ||
2257 | static int decode_attr_mode(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *mode) | |
2258 | { | |
2259 | uint32_t *p; | |
2260 | ||
2261 | *mode = 0; | |
2262 | if (unlikely(bitmap[1] & (FATTR4_WORD1_MODE - 1U))) | |
2263 | return -EIO; | |
2264 | if (likely(bitmap[1] & FATTR4_WORD1_MODE)) { | |
2265 | READ_BUF(4); | |
2266 | READ32(*mode); | |
2267 | *mode &= ~S_IFMT; | |
2268 | bitmap[1] &= ~FATTR4_WORD1_MODE; | |
2269 | } | |
2270 | dprintk("%s: file mode=0%o\n", __FUNCTION__, (unsigned int)*mode); | |
2271 | return 0; | |
2272 | } | |
2273 | ||
2274 | static int decode_attr_nlink(struct xdr_stream *xdr, uint32_t *bitmap, uint32_t *nlink) | |
2275 | { | |
2276 | uint32_t *p; | |
2277 | ||
2278 | *nlink = 1; | |
2279 | if (unlikely(bitmap[1] & (FATTR4_WORD1_NUMLINKS - 1U))) | |
2280 | return -EIO; | |
2281 | if (likely(bitmap[1] & FATTR4_WORD1_NUMLINKS)) { | |
2282 | READ_BUF(4); | |
2283 | READ32(*nlink); | |
2284 | bitmap[1] &= ~FATTR4_WORD1_NUMLINKS; | |
2285 | } | |
2286 | dprintk("%s: nlink=%u\n", __FUNCTION__, (unsigned int)*nlink); | |
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *uid) | |
2291 | { | |
2292 | uint32_t len, *p; | |
2293 | ||
2294 | *uid = -2; | |
2295 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) | |
2296 | return -EIO; | |
2297 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { | |
2298 | READ_BUF(4); | |
2299 | READ32(len); | |
2300 | READ_BUF(len); | |
2301 | if (len < XDR_MAX_NETOBJ) { | |
2302 | if (nfs_map_name_to_uid(clp, (char *)p, len, uid) != 0) | |
2303 | dprintk("%s: nfs_map_name_to_uid failed!\n", | |
2304 | __FUNCTION__); | |
2305 | } else | |
2306 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2307 | __FUNCTION__, len); | |
2308 | bitmap[1] &= ~FATTR4_WORD1_OWNER; | |
2309 | } | |
2310 | dprintk("%s: uid=%d\n", __FUNCTION__, (int)*uid); | |
2311 | return 0; | |
2312 | } | |
2313 | ||
2314 | static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, struct nfs4_client *clp, int32_t *gid) | |
2315 | { | |
2316 | uint32_t len, *p; | |
2317 | ||
2318 | *gid = -2; | |
2319 | if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) | |
2320 | return -EIO; | |
2321 | if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { | |
2322 | READ_BUF(4); | |
2323 | READ32(len); | |
2324 | READ_BUF(len); | |
2325 | if (len < XDR_MAX_NETOBJ) { | |
2326 | if (nfs_map_group_to_gid(clp, (char *)p, len, gid) != 0) | |
2327 | dprintk("%s: nfs_map_group_to_gid failed!\n", | |
2328 | __FUNCTION__); | |
2329 | } else | |
2330 | printk(KERN_WARNING "%s: name too long (%u)!\n", | |
2331 | __FUNCTION__, len); | |
2332 | bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; | |
2333 | } | |
2334 | dprintk("%s: gid=%d\n", __FUNCTION__, (int)*gid); | |
2335 | return 0; | |
2336 | } | |
2337 | ||
2338 | static int decode_attr_rdev(struct xdr_stream *xdr, uint32_t *bitmap, dev_t *rdev) | |
2339 | { | |
2340 | uint32_t major = 0, minor = 0, *p; | |
2341 | ||
2342 | *rdev = MKDEV(0,0); | |
2343 | if (unlikely(bitmap[1] & (FATTR4_WORD1_RAWDEV - 1U))) | |
2344 | return -EIO; | |
2345 | if (likely(bitmap[1] & FATTR4_WORD1_RAWDEV)) { | |
2346 | dev_t tmp; | |
2347 | ||
2348 | READ_BUF(8); | |
2349 | READ32(major); | |
2350 | READ32(minor); | |
2351 | tmp = MKDEV(major, minor); | |
2352 | if (MAJOR(tmp) == major && MINOR(tmp) == minor) | |
2353 | *rdev = tmp; | |
2354 | bitmap[1] &= ~ FATTR4_WORD1_RAWDEV; | |
2355 | } | |
2356 | dprintk("%s: rdev=(0x%x:0x%x)\n", __FUNCTION__, major, minor); | |
2357 | return 0; | |
2358 | } | |
2359 | ||
2360 | static int decode_attr_space_avail(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2361 | { | |
2362 | uint32_t *p; | |
2363 | int status = 0; | |
2364 | ||
2365 | *res = 0; | |
2366 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_AVAIL - 1U))) | |
2367 | return -EIO; | |
2368 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_AVAIL)) { | |
2369 | READ_BUF(8); | |
2370 | READ64(*res); | |
2371 | bitmap[1] &= ~FATTR4_WORD1_SPACE_AVAIL; | |
2372 | } | |
2373 | dprintk("%s: space avail=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2374 | return status; | |
2375 | } | |
2376 | ||
2377 | static int decode_attr_space_free(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2378 | { | |
2379 | uint32_t *p; | |
2380 | int status = 0; | |
2381 | ||
2382 | *res = 0; | |
2383 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_FREE - 1U))) | |
2384 | return -EIO; | |
2385 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_FREE)) { | |
2386 | READ_BUF(8); | |
2387 | READ64(*res); | |
2388 | bitmap[1] &= ~FATTR4_WORD1_SPACE_FREE; | |
2389 | } | |
2390 | dprintk("%s: space free=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2391 | return status; | |
2392 | } | |
2393 | ||
2394 | static int decode_attr_space_total(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *res) | |
2395 | { | |
2396 | uint32_t *p; | |
2397 | int status = 0; | |
2398 | ||
2399 | *res = 0; | |
2400 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_TOTAL - 1U))) | |
2401 | return -EIO; | |
2402 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_TOTAL)) { | |
2403 | READ_BUF(8); | |
2404 | READ64(*res); | |
2405 | bitmap[1] &= ~FATTR4_WORD1_SPACE_TOTAL; | |
2406 | } | |
2407 | dprintk("%s: space total=%Lu\n", __FUNCTION__, (unsigned long long)*res); | |
2408 | return status; | |
2409 | } | |
2410 | ||
2411 | static int decode_attr_space_used(struct xdr_stream *xdr, uint32_t *bitmap, uint64_t *used) | |
2412 | { | |
2413 | uint32_t *p; | |
2414 | ||
2415 | *used = 0; | |
2416 | if (unlikely(bitmap[1] & (FATTR4_WORD1_SPACE_USED - 1U))) | |
2417 | return -EIO; | |
2418 | if (likely(bitmap[1] & FATTR4_WORD1_SPACE_USED)) { | |
2419 | READ_BUF(8); | |
2420 | READ64(*used); | |
2421 | bitmap[1] &= ~FATTR4_WORD1_SPACE_USED; | |
2422 | } | |
2423 | dprintk("%s: space used=%Lu\n", __FUNCTION__, | |
2424 | (unsigned long long)*used); | |
2425 | return 0; | |
2426 | } | |
2427 | ||
2428 | static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) | |
2429 | { | |
2430 | uint32_t *p; | |
2431 | uint64_t sec; | |
2432 | uint32_t nsec; | |
2433 | ||
2434 | READ_BUF(12); | |
2435 | READ64(sec); | |
2436 | READ32(nsec); | |
2437 | time->tv_sec = (time_t)sec; | |
2438 | time->tv_nsec = (long)nsec; | |
2439 | return 0; | |
2440 | } | |
2441 | ||
2442 | static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2443 | { | |
2444 | int status = 0; | |
2445 | ||
2446 | time->tv_sec = 0; | |
2447 | time->tv_nsec = 0; | |
2448 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_ACCESS - 1U))) | |
2449 | return -EIO; | |
2450 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_ACCESS)) { | |
2451 | status = decode_attr_time(xdr, time); | |
2452 | bitmap[1] &= ~FATTR4_WORD1_TIME_ACCESS; | |
2453 | } | |
2454 | dprintk("%s: atime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2455 | return status; | |
2456 | } | |
2457 | ||
2458 | static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2459 | { | |
2460 | int status = 0; | |
2461 | ||
2462 | time->tv_sec = 0; | |
2463 | time->tv_nsec = 0; | |
2464 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_METADATA - 1U))) | |
2465 | return -EIO; | |
2466 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) { | |
2467 | status = decode_attr_time(xdr, time); | |
2468 | bitmap[1] &= ~FATTR4_WORD1_TIME_METADATA; | |
2469 | } | |
2470 | dprintk("%s: ctime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2471 | return status; | |
2472 | } | |
2473 | ||
2474 | static int decode_attr_time_modify(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec *time) | |
2475 | { | |
2476 | int status = 0; | |
2477 | ||
2478 | time->tv_sec = 0; | |
2479 | time->tv_nsec = 0; | |
2480 | if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_MODIFY - 1U))) | |
2481 | return -EIO; | |
2482 | if (likely(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) { | |
2483 | status = decode_attr_time(xdr, time); | |
2484 | bitmap[1] &= ~FATTR4_WORD1_TIME_MODIFY; | |
2485 | } | |
2486 | dprintk("%s: mtime=%ld\n", __FUNCTION__, (long)time->tv_sec); | |
2487 | return status; | |
2488 | } | |
2489 | ||
2490 | static int verify_attr_len(struct xdr_stream *xdr, uint32_t *savep, uint32_t attrlen) | |
2491 | { | |
2492 | unsigned int attrwords = XDR_QUADLEN(attrlen); | |
2493 | unsigned int nwords = xdr->p - savep; | |
2494 | ||
2495 | if (unlikely(attrwords != nwords)) { | |
2496 | printk(KERN_WARNING "%s: server returned incorrect attribute length: %u %c %u\n", | |
2497 | __FUNCTION__, | |
2498 | attrwords << 2, | |
2499 | (attrwords < nwords) ? '<' : '>', | |
2500 | nwords << 2); | |
2501 | return -EIO; | |
2502 | } | |
2503 | return 0; | |
2504 | } | |
2505 | ||
2506 | static int decode_change_info(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2507 | { | |
2508 | uint32_t *p; | |
2509 | ||
2510 | READ_BUF(20); | |
2511 | READ32(cinfo->atomic); | |
2512 | READ64(cinfo->before); | |
2513 | READ64(cinfo->after); | |
2514 | return 0; | |
2515 | } | |
2516 | ||
2517 | static int decode_access(struct xdr_stream *xdr, struct nfs4_accessres *access) | |
2518 | { | |
2519 | uint32_t *p; | |
2520 | uint32_t supp, acc; | |
2521 | int status; | |
2522 | ||
2523 | status = decode_op_hdr(xdr, OP_ACCESS); | |
2524 | if (status) | |
2525 | return status; | |
2526 | READ_BUF(8); | |
2527 | READ32(supp); | |
2528 | READ32(acc); | |
2529 | access->supported = supp; | |
2530 | access->access = acc; | |
2531 | return 0; | |
2532 | } | |
2533 | ||
2534 | static int decode_close(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2535 | { | |
2536 | uint32_t *p; | |
2537 | int status; | |
2538 | ||
2539 | status = decode_op_hdr(xdr, OP_CLOSE); | |
2540 | if (status) | |
2541 | return status; | |
2542 | READ_BUF(sizeof(res->stateid.data)); | |
2543 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2544 | return 0; | |
2545 | } | |
2546 | ||
2547 | static int decode_commit(struct xdr_stream *xdr, struct nfs_writeres *res) | |
2548 | { | |
2549 | uint32_t *p; | |
2550 | int status; | |
2551 | ||
2552 | status = decode_op_hdr(xdr, OP_COMMIT); | |
2553 | if (status) | |
2554 | return status; | |
2555 | READ_BUF(8); | |
2556 | COPYMEM(res->verf->verifier, 8); | |
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | static int decode_create(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2561 | { | |
2562 | uint32_t *p; | |
2563 | uint32_t bmlen; | |
2564 | int status; | |
2565 | ||
2566 | status = decode_op_hdr(xdr, OP_CREATE); | |
2567 | if (status) | |
2568 | return status; | |
2569 | if ((status = decode_change_info(xdr, cinfo))) | |
2570 | return status; | |
2571 | READ_BUF(4); | |
2572 | READ32(bmlen); | |
2573 | READ_BUF(bmlen << 2); | |
2574 | return 0; | |
2575 | } | |
2576 | ||
2577 | static int decode_server_caps(struct xdr_stream *xdr, struct nfs4_server_caps_res *res) | |
2578 | { | |
2579 | uint32_t *savep; | |
2580 | uint32_t attrlen, | |
2581 | bitmap[2] = {0}; | |
2582 | int status; | |
2583 | ||
2584 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2585 | goto xdr_error; | |
2586 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2587 | goto xdr_error; | |
2588 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2589 | goto xdr_error; | |
2590 | if ((status = decode_attr_supported(xdr, bitmap, res->attr_bitmask)) != 0) | |
2591 | goto xdr_error; | |
2592 | if ((status = decode_attr_link_support(xdr, bitmap, &res->has_links)) != 0) | |
2593 | goto xdr_error; | |
2594 | if ((status = decode_attr_symlink_support(xdr, bitmap, &res->has_symlinks)) != 0) | |
2595 | goto xdr_error; | |
2596 | if ((status = decode_attr_aclsupport(xdr, bitmap, &res->acl_bitmask)) != 0) | |
2597 | goto xdr_error; | |
2598 | status = verify_attr_len(xdr, savep, attrlen); | |
2599 | xdr_error: | |
2600 | if (status != 0) | |
2601 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2602 | return status; | |
2603 | } | |
2604 | ||
2605 | static int decode_statfs(struct xdr_stream *xdr, struct nfs_fsstat *fsstat) | |
2606 | { | |
2607 | uint32_t *savep; | |
2608 | uint32_t attrlen, | |
2609 | bitmap[2] = {0}; | |
2610 | int status; | |
2611 | ||
2612 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2613 | goto xdr_error; | |
2614 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2615 | goto xdr_error; | |
2616 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2617 | goto xdr_error; | |
2618 | ||
2619 | if ((status = decode_attr_files_avail(xdr, bitmap, &fsstat->afiles)) != 0) | |
2620 | goto xdr_error; | |
2621 | if ((status = decode_attr_files_free(xdr, bitmap, &fsstat->ffiles)) != 0) | |
2622 | goto xdr_error; | |
2623 | if ((status = decode_attr_files_total(xdr, bitmap, &fsstat->tfiles)) != 0) | |
2624 | goto xdr_error; | |
2625 | if ((status = decode_attr_space_avail(xdr, bitmap, &fsstat->abytes)) != 0) | |
2626 | goto xdr_error; | |
2627 | if ((status = decode_attr_space_free(xdr, bitmap, &fsstat->fbytes)) != 0) | |
2628 | goto xdr_error; | |
2629 | if ((status = decode_attr_space_total(xdr, bitmap, &fsstat->tbytes)) != 0) | |
2630 | goto xdr_error; | |
2631 | ||
2632 | status = verify_attr_len(xdr, savep, attrlen); | |
2633 | xdr_error: | |
2634 | if (status != 0) | |
2635 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2636 | return status; | |
2637 | } | |
2638 | ||
2639 | static int decode_pathconf(struct xdr_stream *xdr, struct nfs_pathconf *pathconf) | |
2640 | { | |
2641 | uint32_t *savep; | |
2642 | uint32_t attrlen, | |
2643 | bitmap[2] = {0}; | |
2644 | int status; | |
2645 | ||
2646 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2647 | goto xdr_error; | |
2648 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2649 | goto xdr_error; | |
2650 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2651 | goto xdr_error; | |
2652 | ||
2653 | if ((status = decode_attr_maxlink(xdr, bitmap, &pathconf->max_link)) != 0) | |
2654 | goto xdr_error; | |
2655 | if ((status = decode_attr_maxname(xdr, bitmap, &pathconf->max_namelen)) != 0) | |
2656 | goto xdr_error; | |
2657 | ||
2658 | status = verify_attr_len(xdr, savep, attrlen); | |
2659 | xdr_error: | |
2660 | if (status != 0) | |
2661 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2662 | return status; | |
2663 | } | |
2664 | ||
2665 | static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, const struct nfs_server *server) | |
2666 | { | |
2667 | uint32_t *savep; | |
2668 | uint32_t attrlen, | |
2669 | bitmap[2] = {0}, | |
2670 | type; | |
2671 | int status, fmode = 0; | |
2672 | ||
2673 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2674 | goto xdr_error; | |
2675 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2676 | goto xdr_error; | |
2677 | ||
2678 | fattr->bitmap[0] = bitmap[0]; | |
2679 | fattr->bitmap[1] = bitmap[1]; | |
2680 | ||
2681 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2682 | goto xdr_error; | |
2683 | ||
2684 | ||
2685 | if ((status = decode_attr_type(xdr, bitmap, &type)) != 0) | |
2686 | goto xdr_error; | |
2687 | fattr->type = nfs_type2fmt[type].nfs2type; | |
2688 | fmode = nfs_type2fmt[type].mode; | |
2689 | ||
2690 | if ((status = decode_attr_change(xdr, bitmap, &fattr->change_attr)) != 0) | |
2691 | goto xdr_error; | |
2692 | if ((status = decode_attr_size(xdr, bitmap, &fattr->size)) != 0) | |
2693 | goto xdr_error; | |
2694 | if ((status = decode_attr_fsid(xdr, bitmap, &fattr->fsid_u.nfs4)) != 0) | |
2695 | goto xdr_error; | |
2696 | if ((status = decode_attr_fileid(xdr, bitmap, &fattr->fileid)) != 0) | |
2697 | goto xdr_error; | |
2698 | if ((status = decode_attr_mode(xdr, bitmap, &fattr->mode)) != 0) | |
2699 | goto xdr_error; | |
2700 | fattr->mode |= fmode; | |
2701 | if ((status = decode_attr_nlink(xdr, bitmap, &fattr->nlink)) != 0) | |
2702 | goto xdr_error; | |
2703 | if ((status = decode_attr_owner(xdr, bitmap, server->nfs4_state, &fattr->uid)) != 0) | |
2704 | goto xdr_error; | |
2705 | if ((status = decode_attr_group(xdr, bitmap, server->nfs4_state, &fattr->gid)) != 0) | |
2706 | goto xdr_error; | |
2707 | if ((status = decode_attr_rdev(xdr, bitmap, &fattr->rdev)) != 0) | |
2708 | goto xdr_error; | |
2709 | if ((status = decode_attr_space_used(xdr, bitmap, &fattr->du.nfs3.used)) != 0) | |
2710 | goto xdr_error; | |
2711 | if ((status = decode_attr_time_access(xdr, bitmap, &fattr->atime)) != 0) | |
2712 | goto xdr_error; | |
2713 | if ((status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime)) != 0) | |
2714 | goto xdr_error; | |
2715 | if ((status = decode_attr_time_modify(xdr, bitmap, &fattr->mtime)) != 0) | |
2716 | goto xdr_error; | |
2717 | if ((status = verify_attr_len(xdr, savep, attrlen)) == 0) { | |
2718 | fattr->valid = NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3 | NFS_ATTR_FATTR_V4; | |
2719 | fattr->timestamp = jiffies; | |
2720 | } | |
2721 | xdr_error: | |
2722 | if (status != 0) | |
2723 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2724 | return status; | |
2725 | } | |
2726 | ||
2727 | ||
2728 | static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) | |
2729 | { | |
2730 | uint32_t *savep; | |
2731 | uint32_t attrlen, bitmap[2]; | |
2732 | int status; | |
2733 | ||
2734 | if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) | |
2735 | goto xdr_error; | |
2736 | if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) | |
2737 | goto xdr_error; | |
2738 | if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) | |
2739 | goto xdr_error; | |
2740 | ||
2741 | fsinfo->rtmult = fsinfo->wtmult = 512; /* ??? */ | |
2742 | ||
2743 | if ((status = decode_attr_lease_time(xdr, bitmap, &fsinfo->lease_time)) != 0) | |
2744 | goto xdr_error; | |
2745 | if ((status = decode_attr_maxfilesize(xdr, bitmap, &fsinfo->maxfilesize)) != 0) | |
2746 | goto xdr_error; | |
2747 | if ((status = decode_attr_maxread(xdr, bitmap, &fsinfo->rtmax)) != 0) | |
2748 | goto xdr_error; | |
2749 | fsinfo->rtpref = fsinfo->dtpref = fsinfo->rtmax; | |
2750 | if ((status = decode_attr_maxwrite(xdr, bitmap, &fsinfo->wtmax)) != 0) | |
2751 | goto xdr_error; | |
2752 | fsinfo->wtpref = fsinfo->wtmax; | |
2753 | ||
2754 | status = verify_attr_len(xdr, savep, attrlen); | |
2755 | xdr_error: | |
2756 | if (status != 0) | |
2757 | printk(KERN_NOTICE "%s: xdr error %d!\n", __FUNCTION__, -status); | |
2758 | return status; | |
2759 | } | |
2760 | ||
2761 | static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh) | |
2762 | { | |
2763 | uint32_t *p; | |
2764 | uint32_t len; | |
2765 | int status; | |
2766 | ||
2767 | status = decode_op_hdr(xdr, OP_GETFH); | |
2768 | if (status) | |
2769 | return status; | |
2770 | /* Zero handle first to allow comparisons */ | |
2771 | memset(fh, 0, sizeof(*fh)); | |
2772 | ||
2773 | READ_BUF(4); | |
2774 | READ32(len); | |
2775 | if (len > NFS4_FHSIZE) | |
2776 | return -EIO; | |
2777 | fh->size = len; | |
2778 | READ_BUF(len); | |
2779 | COPYMEM(fh->data, len); | |
2780 | return 0; | |
2781 | } | |
2782 | ||
2783 | static int decode_link(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
2784 | { | |
2785 | int status; | |
2786 | ||
2787 | status = decode_op_hdr(xdr, OP_LINK); | |
2788 | if (status) | |
2789 | return status; | |
2790 | return decode_change_info(xdr, cinfo); | |
2791 | } | |
2792 | ||
2793 | /* | |
2794 | * We create the owner, so we know a proper owner.id length is 4. | |
2795 | */ | |
2796 | static int decode_lock_denied (struct xdr_stream *xdr, struct nfs_lock_denied *denied) | |
2797 | { | |
2798 | uint32_t *p; | |
2799 | uint32_t namelen; | |
2800 | ||
2801 | READ_BUF(32); | |
2802 | READ64(denied->offset); | |
2803 | READ64(denied->length); | |
2804 | READ32(denied->type); | |
2805 | READ64(denied->owner.clientid); | |
2806 | READ32(namelen); | |
2807 | READ_BUF(namelen); | |
2808 | if (namelen == 4) | |
2809 | READ32(denied->owner.id); | |
2810 | return -NFS4ERR_DENIED; | |
2811 | } | |
2812 | ||
2813 | static int decode_lock(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2814 | { | |
2815 | uint32_t *p; | |
2816 | int status; | |
2817 | ||
2818 | status = decode_op_hdr(xdr, OP_LOCK); | |
2819 | if (status == 0) { | |
2820 | READ_BUF(sizeof(nfs4_stateid)); | |
2821 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2822 | } else if (status == -NFS4ERR_DENIED) | |
2823 | return decode_lock_denied(xdr, &res->u.denied); | |
2824 | return status; | |
2825 | } | |
2826 | ||
2827 | static int decode_lockt(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2828 | { | |
2829 | int status; | |
2830 | status = decode_op_hdr(xdr, OP_LOCKT); | |
2831 | if (status == -NFS4ERR_DENIED) | |
2832 | return decode_lock_denied(xdr, &res->u.denied); | |
2833 | return status; | |
2834 | } | |
2835 | ||
2836 | static int decode_locku(struct xdr_stream *xdr, struct nfs_lockres *res) | |
2837 | { | |
2838 | uint32_t *p; | |
2839 | int status; | |
2840 | ||
2841 | status = decode_op_hdr(xdr, OP_LOCKU); | |
2842 | if (status == 0) { | |
2843 | READ_BUF(sizeof(nfs4_stateid)); | |
2844 | COPYMEM(&res->u.stateid, sizeof(res->u.stateid)); | |
2845 | } | |
2846 | return status; | |
2847 | } | |
2848 | ||
2849 | static int decode_lookup(struct xdr_stream *xdr) | |
2850 | { | |
2851 | return decode_op_hdr(xdr, OP_LOOKUP); | |
2852 | } | |
2853 | ||
2854 | /* This is too sick! */ | |
2855 | static int decode_space_limit(struct xdr_stream *xdr, u64 *maxsize) | |
2856 | { | |
2857 | uint32_t *p; | |
2858 | uint32_t limit_type, nblocks, blocksize; | |
2859 | ||
2860 | READ_BUF(12); | |
2861 | READ32(limit_type); | |
2862 | switch (limit_type) { | |
2863 | case 1: | |
2864 | READ64(*maxsize); | |
2865 | break; | |
2866 | case 2: | |
2867 | READ32(nblocks); | |
2868 | READ32(blocksize); | |
2869 | *maxsize = (uint64_t)nblocks * (uint64_t)blocksize; | |
2870 | } | |
2871 | return 0; | |
2872 | } | |
2873 | ||
2874 | static int decode_delegation(struct xdr_stream *xdr, struct nfs_openres *res) | |
2875 | { | |
2876 | uint32_t *p; | |
2877 | uint32_t delegation_type; | |
2878 | ||
2879 | READ_BUF(4); | |
2880 | READ32(delegation_type); | |
2881 | if (delegation_type == NFS4_OPEN_DELEGATE_NONE) { | |
2882 | res->delegation_type = 0; | |
2883 | return 0; | |
2884 | } | |
2885 | READ_BUF(20); | |
2886 | COPYMEM(res->delegation.data, sizeof(res->delegation.data)); | |
2887 | READ32(res->do_recall); | |
2888 | switch (delegation_type) { | |
2889 | case NFS4_OPEN_DELEGATE_READ: | |
2890 | res->delegation_type = FMODE_READ; | |
2891 | break; | |
2892 | case NFS4_OPEN_DELEGATE_WRITE: | |
2893 | res->delegation_type = FMODE_WRITE|FMODE_READ; | |
2894 | if (decode_space_limit(xdr, &res->maxsize) < 0) | |
2895 | return -EIO; | |
2896 | } | |
2897 | return decode_ace(xdr, NULL, res->server->nfs4_state); | |
2898 | } | |
2899 | ||
2900 | static int decode_open(struct xdr_stream *xdr, struct nfs_openres *res) | |
2901 | { | |
2902 | uint32_t *p; | |
2903 | uint32_t bmlen; | |
2904 | int status; | |
2905 | ||
2906 | status = decode_op_hdr(xdr, OP_OPEN); | |
2907 | if (status) | |
2908 | return status; | |
2909 | READ_BUF(sizeof(res->stateid.data)); | |
2910 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2911 | ||
2912 | decode_change_info(xdr, &res->cinfo); | |
2913 | ||
2914 | READ_BUF(8); | |
2915 | READ32(res->rflags); | |
2916 | READ32(bmlen); | |
2917 | if (bmlen > 10) | |
2918 | goto xdr_error; | |
2919 | ||
2920 | READ_BUF(bmlen << 2); | |
2921 | p += bmlen; | |
2922 | return decode_delegation(xdr, res); | |
2923 | xdr_error: | |
2924 | printk(KERN_NOTICE "%s: xdr error!\n", __FUNCTION__); | |
2925 | return -EIO; | |
2926 | } | |
2927 | ||
2928 | static int decode_open_confirm(struct xdr_stream *xdr, struct nfs_open_confirmres *res) | |
2929 | { | |
2930 | uint32_t *p; | |
2931 | int status; | |
2932 | ||
2933 | status = decode_op_hdr(xdr, OP_OPEN_CONFIRM); | |
2934 | if (status) | |
2935 | return status; | |
2936 | READ_BUF(sizeof(res->stateid.data)); | |
2937 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2938 | return 0; | |
2939 | } | |
2940 | ||
2941 | static int decode_open_downgrade(struct xdr_stream *xdr, struct nfs_closeres *res) | |
2942 | { | |
2943 | uint32_t *p; | |
2944 | int status; | |
2945 | ||
2946 | status = decode_op_hdr(xdr, OP_OPEN_DOWNGRADE); | |
2947 | if (status) | |
2948 | return status; | |
2949 | READ_BUF(sizeof(res->stateid.data)); | |
2950 | COPYMEM(res->stateid.data, sizeof(res->stateid.data)); | |
2951 | return 0; | |
2952 | } | |
2953 | ||
2954 | static int decode_putfh(struct xdr_stream *xdr) | |
2955 | { | |
2956 | return decode_op_hdr(xdr, OP_PUTFH); | |
2957 | } | |
2958 | ||
2959 | static int decode_putrootfh(struct xdr_stream *xdr) | |
2960 | { | |
2961 | return decode_op_hdr(xdr, OP_PUTROOTFH); | |
2962 | } | |
2963 | ||
2964 | static int decode_read(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs_readres *res) | |
2965 | { | |
2966 | struct kvec *iov = req->rq_rcv_buf.head; | |
2967 | uint32_t *p; | |
2968 | uint32_t count, eof, recvd, hdrlen; | |
2969 | int status; | |
2970 | ||
2971 | status = decode_op_hdr(xdr, OP_READ); | |
2972 | if (status) | |
2973 | return status; | |
2974 | READ_BUF(8); | |
2975 | READ32(eof); | |
2976 | READ32(count); | |
2977 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
2978 | recvd = req->rq_rcv_buf.len - hdrlen; | |
2979 | if (count > recvd) { | |
2980 | printk(KERN_WARNING "NFS: server cheating in read reply: " | |
2981 | "count %u > recvd %u\n", count, recvd); | |
2982 | count = recvd; | |
2983 | eof = 0; | |
2984 | } | |
2985 | xdr_read_pages(xdr, count); | |
2986 | res->eof = eof; | |
2987 | res->count = count; | |
2988 | return 0; | |
2989 | } | |
2990 | ||
2991 | static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct nfs4_readdir_res *readdir) | |
2992 | { | |
2993 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
2994 | struct page *page = *rcvbuf->pages; | |
2995 | struct kvec *iov = rcvbuf->head; | |
2996 | unsigned int nr, pglen = rcvbuf->page_len; | |
2997 | uint32_t *end, *entry, *p, *kaddr; | |
2998 | uint32_t len, attrlen; | |
2999 | int hdrlen, recvd, status; | |
3000 | ||
3001 | status = decode_op_hdr(xdr, OP_READDIR); | |
3002 | if (status) | |
3003 | return status; | |
3004 | READ_BUF(8); | |
3005 | COPYMEM(readdir->verifier.data, 8); | |
3006 | ||
3007 | hdrlen = (char *) p - (char *) iov->iov_base; | |
3008 | recvd = rcvbuf->len - hdrlen; | |
3009 | if (pglen > recvd) | |
3010 | pglen = recvd; | |
3011 | xdr_read_pages(xdr, pglen); | |
3012 | ||
3013 | BUG_ON(pglen + readdir->pgbase > PAGE_CACHE_SIZE); | |
3014 | kaddr = p = (uint32_t *) kmap_atomic(page, KM_USER0); | |
3015 | end = (uint32_t *) ((char *)p + pglen + readdir->pgbase); | |
3016 | entry = p; | |
3017 | for (nr = 0; *p++; nr++) { | |
3018 | if (p + 3 > end) | |
3019 | goto short_pkt; | |
3020 | p += 2; /* cookie */ | |
3021 | len = ntohl(*p++); /* filename length */ | |
3022 | if (len > NFS4_MAXNAMLEN) { | |
3023 | printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)\n", len); | |
3024 | goto err_unmap; | |
3025 | } | |
3026 | p += XDR_QUADLEN(len); | |
3027 | if (p + 1 > end) | |
3028 | goto short_pkt; | |
3029 | len = ntohl(*p++); /* bitmap length */ | |
3030 | p += len; | |
3031 | if (p + 1 > end) | |
3032 | goto short_pkt; | |
3033 | attrlen = XDR_QUADLEN(ntohl(*p++)); | |
3034 | p += attrlen; /* attributes */ | |
3035 | if (p + 2 > end) | |
3036 | goto short_pkt; | |
3037 | entry = p; | |
3038 | } | |
3039 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
3040 | goto short_pkt; | |
3041 | out: | |
3042 | kunmap_atomic(kaddr, KM_USER0); | |
3043 | return 0; | |
3044 | short_pkt: | |
3045 | entry[0] = entry[1] = 0; | |
3046 | /* truncate listing ? */ | |
3047 | if (!nr) { | |
3048 | printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); | |
3049 | entry[1] = 1; | |
3050 | } | |
3051 | goto out; | |
3052 | err_unmap: | |
3053 | kunmap_atomic(kaddr, KM_USER0); | |
3054 | return -errno_NFSERR_IO; | |
3055 | } | |
3056 | ||
3057 | static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req) | |
3058 | { | |
3059 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
3060 | struct kvec *iov = rcvbuf->head; | |
3061 | int hdrlen, len, recvd; | |
3062 | uint32_t *p; | |
3063 | char *kaddr; | |
3064 | int status; | |
3065 | ||
3066 | status = decode_op_hdr(xdr, OP_READLINK); | |
3067 | if (status) | |
3068 | return status; | |
3069 | ||
3070 | /* Convert length of symlink */ | |
3071 | READ_BUF(4); | |
3072 | READ32(len); | |
3073 | if (len >= rcvbuf->page_len || len <= 0) { | |
3074 | dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); | |
3075 | return -ENAMETOOLONG; | |
3076 | } | |
3077 | hdrlen = (char *) xdr->p - (char *) iov->iov_base; | |
3078 | recvd = req->rq_rcv_buf.len - hdrlen; | |
3079 | if (recvd < len) { | |
3080 | printk(KERN_WARNING "NFS: server cheating in readlink reply: " | |
3081 | "count %u > recvd %u\n", len, recvd); | |
3082 | return -EIO; | |
3083 | } | |
3084 | xdr_read_pages(xdr, len); | |
3085 | /* | |
3086 | * The XDR encode routine has set things up so that | |
3087 | * the link text will be copied directly into the | |
3088 | * buffer. We just have to do overflow-checking, | |
3089 | * and and null-terminate the text (the VFS expects | |
3090 | * null-termination). | |
3091 | */ | |
3092 | kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
3093 | kaddr[len+rcvbuf->page_base] = '\0'; | |
3094 | kunmap_atomic(kaddr, KM_USER0); | |
3095 | return 0; | |
3096 | } | |
3097 | ||
3098 | static int decode_remove(struct xdr_stream *xdr, struct nfs4_change_info *cinfo) | |
3099 | { | |
3100 | int status; | |
3101 | ||
3102 | status = decode_op_hdr(xdr, OP_REMOVE); | |
3103 | if (status) | |
3104 | goto out; | |
3105 | status = decode_change_info(xdr, cinfo); | |
3106 | out: | |
3107 | return status; | |
3108 | } | |
3109 | ||
3110 | static int decode_rename(struct xdr_stream *xdr, struct nfs4_change_info *old_cinfo, | |
3111 | struct nfs4_change_info *new_cinfo) | |
3112 | { | |
3113 | int status; | |
3114 | ||
3115 | status = decode_op_hdr(xdr, OP_RENAME); | |
3116 | if (status) | |
3117 | goto out; | |
3118 | if ((status = decode_change_info(xdr, old_cinfo))) | |
3119 | goto out; | |
3120 | status = decode_change_info(xdr, new_cinfo); | |
3121 | out: | |
3122 | return status; | |
3123 | } | |
3124 | ||
3125 | static int decode_renew(struct xdr_stream *xdr) | |
3126 | { | |
3127 | return decode_op_hdr(xdr, OP_RENEW); | |
3128 | } | |
3129 | ||
3130 | static int | |
3131 | decode_savefh(struct xdr_stream *xdr) | |
3132 | { | |
3133 | return decode_op_hdr(xdr, OP_SAVEFH); | |
3134 | } | |
3135 | ||
3136 | static int decode_setattr(struct xdr_stream *xdr, struct nfs_setattrres *res) | |
3137 | { | |
3138 | uint32_t *p; | |
3139 | uint32_t bmlen; | |
3140 | int status; | |
3141 | ||
3142 | ||
3143 | status = decode_op_hdr(xdr, OP_SETATTR); | |
3144 | if (status) | |
3145 | return status; | |
3146 | READ_BUF(4); | |
3147 | READ32(bmlen); | |
3148 | READ_BUF(bmlen << 2); | |
3149 | return 0; | |
3150 | } | |
3151 | ||
3152 | static int decode_setclientid(struct xdr_stream *xdr, struct nfs4_client *clp) | |
3153 | { | |
3154 | uint32_t *p; | |
3155 | uint32_t opnum; | |
3156 | int32_t nfserr; | |
3157 | ||
3158 | READ_BUF(8); | |
3159 | READ32(opnum); | |
3160 | if (opnum != OP_SETCLIENTID) { | |
3161 | printk(KERN_NOTICE | |
3162 | "nfs4_decode_setclientid: Server returned operation" | |
3163 | " %d\n", opnum); | |
3164 | return -EIO; | |
3165 | } | |
3166 | READ32(nfserr); | |
3167 | if (nfserr == NFS_OK) { | |
3168 | READ_BUF(8 + sizeof(clp->cl_confirm.data)); | |
3169 | READ64(clp->cl_clientid); | |
3170 | COPYMEM(clp->cl_confirm.data, sizeof(clp->cl_confirm.data)); | |
3171 | } else if (nfserr == NFSERR_CLID_INUSE) { | |
3172 | uint32_t len; | |
3173 | ||
3174 | /* skip netid string */ | |
3175 | READ_BUF(4); | |
3176 | READ32(len); | |
3177 | READ_BUF(len); | |
3178 | ||
3179 | /* skip uaddr string */ | |
3180 | READ_BUF(4); | |
3181 | READ32(len); | |
3182 | READ_BUF(len); | |
3183 | return -NFSERR_CLID_INUSE; | |
3184 | } else | |
3185 | return -nfs_stat_to_errno(nfserr); | |
3186 | ||
3187 | return 0; | |
3188 | } | |
3189 | ||
3190 | static int decode_setclientid_confirm(struct xdr_stream *xdr) | |
3191 | { | |
3192 | return decode_op_hdr(xdr, OP_SETCLIENTID_CONFIRM); | |
3193 | } | |
3194 | ||
3195 | static int decode_write(struct xdr_stream *xdr, struct nfs_writeres *res) | |
3196 | { | |
3197 | uint32_t *p; | |
3198 | int status; | |
3199 | ||
3200 | status = decode_op_hdr(xdr, OP_WRITE); | |
3201 | if (status) | |
3202 | return status; | |
3203 | ||
3204 | READ_BUF(16); | |
3205 | READ32(res->count); | |
3206 | READ32(res->verf->committed); | |
3207 | COPYMEM(res->verf->verifier, 8); | |
3208 | return 0; | |
3209 | } | |
3210 | ||
3211 | static int decode_delegreturn(struct xdr_stream *xdr) | |
3212 | { | |
3213 | return decode_op_hdr(xdr, OP_DELEGRETURN); | |
3214 | } | |
3215 | ||
3216 | /* | |
3217 | * Decode OPEN_DOWNGRADE response | |
3218 | */ | |
3219 | static int nfs4_xdr_dec_open_downgrade(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3220 | { | |
3221 | struct xdr_stream xdr; | |
3222 | struct compound_hdr hdr; | |
3223 | int status; | |
3224 | ||
3225 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3226 | status = decode_compound_hdr(&xdr, &hdr); | |
3227 | if (status) | |
3228 | goto out; | |
3229 | status = decode_putfh(&xdr); | |
3230 | if (status) | |
3231 | goto out; | |
3232 | status = decode_open_downgrade(&xdr, res); | |
3233 | out: | |
3234 | return status; | |
3235 | } | |
3236 | ||
3237 | /* | |
3238 | * END OF "GENERIC" DECODE ROUTINES. | |
3239 | */ | |
3240 | ||
3241 | /* | |
3242 | * Decode ACCESS response | |
3243 | */ | |
3244 | static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_accessres *res) | |
3245 | { | |
3246 | struct xdr_stream xdr; | |
3247 | struct compound_hdr hdr; | |
3248 | int status; | |
3249 | ||
3250 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3251 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3252 | goto out; | |
3253 | if ((status = decode_putfh(&xdr)) == 0) | |
3254 | status = decode_access(&xdr, res); | |
3255 | out: | |
3256 | return status; | |
3257 | } | |
3258 | ||
3259 | /* | |
3260 | * Decode LOOKUP response | |
3261 | */ | |
3262 | static int nfs4_xdr_dec_lookup(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3263 | { | |
3264 | struct xdr_stream xdr; | |
3265 | struct compound_hdr hdr; | |
3266 | int status; | |
3267 | ||
3268 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3269 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3270 | goto out; | |
3271 | if ((status = decode_putfh(&xdr)) != 0) | |
3272 | goto out; | |
3273 | if ((status = decode_lookup(&xdr)) != 0) | |
3274 | goto out; | |
3275 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3276 | goto out; | |
3277 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3278 | out: | |
3279 | return status; | |
3280 | } | |
3281 | ||
3282 | /* | |
3283 | * Decode LOOKUP_ROOT response | |
3284 | */ | |
3285 | static int nfs4_xdr_dec_lookup_root(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_lookup_res *res) | |
3286 | { | |
3287 | struct xdr_stream xdr; | |
3288 | struct compound_hdr hdr; | |
3289 | int status; | |
3290 | ||
3291 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3292 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3293 | goto out; | |
3294 | if ((status = decode_putrootfh(&xdr)) != 0) | |
3295 | goto out; | |
3296 | if ((status = decode_getfh(&xdr, res->fh)) == 0) | |
3297 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3298 | out: | |
3299 | return status; | |
3300 | } | |
3301 | ||
3302 | /* | |
3303 | * Decode REMOVE response | |
3304 | */ | |
3305 | static int nfs4_xdr_dec_remove(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3306 | { | |
3307 | struct xdr_stream xdr; | |
3308 | struct compound_hdr hdr; | |
3309 | int status; | |
3310 | ||
3311 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3312 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3313 | goto out; | |
3314 | if ((status = decode_putfh(&xdr)) == 0) | |
3315 | status = decode_remove(&xdr, cinfo); | |
3316 | out: | |
3317 | return status; | |
3318 | } | |
3319 | ||
3320 | /* | |
3321 | * Decode RENAME response | |
3322 | */ | |
3323 | static int nfs4_xdr_dec_rename(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_rename_res *res) | |
3324 | { | |
3325 | struct xdr_stream xdr; | |
3326 | struct compound_hdr hdr; | |
3327 | int status; | |
3328 | ||
3329 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3330 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3331 | goto out; | |
3332 | if ((status = decode_putfh(&xdr)) != 0) | |
3333 | goto out; | |
3334 | if ((status = decode_savefh(&xdr)) != 0) | |
3335 | goto out; | |
3336 | if ((status = decode_putfh(&xdr)) != 0) | |
3337 | goto out; | |
3338 | status = decode_rename(&xdr, &res->old_cinfo, &res->new_cinfo); | |
3339 | out: | |
3340 | return status; | |
3341 | } | |
3342 | ||
3343 | /* | |
3344 | * Decode LINK response | |
3345 | */ | |
3346 | static int nfs4_xdr_dec_link(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_change_info *cinfo) | |
3347 | { | |
3348 | struct xdr_stream xdr; | |
3349 | struct compound_hdr hdr; | |
3350 | int status; | |
3351 | ||
3352 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3353 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3354 | goto out; | |
3355 | if ((status = decode_putfh(&xdr)) != 0) | |
3356 | goto out; | |
3357 | if ((status = decode_savefh(&xdr)) != 0) | |
3358 | goto out; | |
3359 | if ((status = decode_putfh(&xdr)) != 0) | |
3360 | goto out; | |
3361 | status = decode_link(&xdr, cinfo); | |
3362 | out: | |
3363 | return status; | |
3364 | } | |
3365 | ||
3366 | /* | |
3367 | * Decode CREATE response | |
3368 | */ | |
3369 | static int nfs4_xdr_dec_create(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3370 | { | |
3371 | struct xdr_stream xdr; | |
3372 | struct compound_hdr hdr; | |
3373 | int status; | |
3374 | ||
3375 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3376 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3377 | goto out; | |
3378 | if ((status = decode_putfh(&xdr)) != 0) | |
3379 | goto out; | |
3380 | if ((status = decode_create(&xdr,&res->dir_cinfo)) != 0) | |
3381 | goto out; | |
3382 | if ((status = decode_getfh(&xdr, res->fh)) != 0) | |
3383 | goto out; | |
3384 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3385 | if (status == NFS4ERR_DELAY) | |
3386 | status = 0; | |
3387 | out: | |
3388 | return status; | |
3389 | } | |
3390 | ||
3391 | /* | |
3392 | * Decode SYMLINK response | |
3393 | */ | |
3394 | static int nfs4_xdr_dec_symlink(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_create_res *res) | |
3395 | { | |
3396 | return nfs4_xdr_dec_create(rqstp, p, res); | |
3397 | } | |
3398 | ||
3399 | /* | |
3400 | * Decode GETATTR response | |
3401 | */ | |
3402 | static int nfs4_xdr_dec_getattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_getattr_res *res) | |
3403 | { | |
3404 | struct xdr_stream xdr; | |
3405 | struct compound_hdr hdr; | |
3406 | int status; | |
3407 | ||
3408 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3409 | status = decode_compound_hdr(&xdr, &hdr); | |
3410 | if (status) | |
3411 | goto out; | |
3412 | status = decode_putfh(&xdr); | |
3413 | if (status) | |
3414 | goto out; | |
3415 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3416 | out: | |
3417 | return status; | |
3418 | ||
3419 | } | |
3420 | ||
3421 | ||
3422 | /* | |
3423 | * Decode CLOSE response | |
3424 | */ | |
3425 | static int nfs4_xdr_dec_close(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_closeres *res) | |
3426 | { | |
3427 | struct xdr_stream xdr; | |
3428 | struct compound_hdr hdr; | |
3429 | int status; | |
3430 | ||
3431 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3432 | status = decode_compound_hdr(&xdr, &hdr); | |
3433 | if (status) | |
3434 | goto out; | |
3435 | status = decode_putfh(&xdr); | |
3436 | if (status) | |
3437 | goto out; | |
3438 | status = decode_close(&xdr, res); | |
3439 | out: | |
3440 | return status; | |
3441 | } | |
3442 | ||
3443 | /* | |
3444 | * Decode OPEN response | |
3445 | */ | |
3446 | static int nfs4_xdr_dec_open(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3447 | { | |
3448 | struct xdr_stream xdr; | |
3449 | struct compound_hdr hdr; | |
3450 | int status; | |
3451 | ||
3452 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3453 | status = decode_compound_hdr(&xdr, &hdr); | |
3454 | if (status) | |
3455 | goto out; | |
3456 | status = decode_putfh(&xdr); | |
3457 | if (status) | |
3458 | goto out; | |
3459 | status = decode_open(&xdr, res); | |
3460 | if (status) | |
3461 | goto out; | |
3462 | status = decode_getfh(&xdr, &res->fh); | |
3463 | if (status) | |
3464 | goto out; | |
3465 | status = decode_getfattr(&xdr, res->f_attr, res->server); | |
3466 | if (status == NFS4ERR_DELAY) | |
3467 | status = 0; | |
3468 | out: | |
3469 | return status; | |
3470 | } | |
3471 | ||
3472 | /* | |
3473 | * Decode OPEN_CONFIRM response | |
3474 | */ | |
3475 | static int nfs4_xdr_dec_open_confirm(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_open_confirmres *res) | |
3476 | { | |
3477 | struct xdr_stream xdr; | |
3478 | struct compound_hdr hdr; | |
3479 | int status; | |
3480 | ||
3481 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3482 | status = decode_compound_hdr(&xdr, &hdr); | |
3483 | if (status) | |
3484 | goto out; | |
3485 | status = decode_putfh(&xdr); | |
3486 | if (status) | |
3487 | goto out; | |
3488 | status = decode_open_confirm(&xdr, res); | |
3489 | out: | |
3490 | return status; | |
3491 | } | |
3492 | ||
3493 | /* | |
3494 | * Decode OPEN response | |
3495 | */ | |
3496 | static int nfs4_xdr_dec_open_noattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_openres *res) | |
3497 | { | |
3498 | struct xdr_stream xdr; | |
3499 | struct compound_hdr hdr; | |
3500 | int status; | |
3501 | ||
3502 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3503 | status = decode_compound_hdr(&xdr, &hdr); | |
3504 | if (status) | |
3505 | goto out; | |
3506 | status = decode_putfh(&xdr); | |
3507 | if (status) | |
3508 | goto out; | |
3509 | status = decode_open(&xdr, res); | |
3510 | out: | |
3511 | return status; | |
3512 | } | |
3513 | ||
3514 | /* | |
3515 | * Decode SETATTR response | |
3516 | */ | |
3517 | static int nfs4_xdr_dec_setattr(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_setattrres *res) | |
3518 | { | |
3519 | struct xdr_stream xdr; | |
3520 | struct compound_hdr hdr; | |
3521 | int status; | |
3522 | ||
3523 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3524 | status = decode_compound_hdr(&xdr, &hdr); | |
3525 | if (status) | |
3526 | goto out; | |
3527 | status = decode_putfh(&xdr); | |
3528 | if (status) | |
3529 | goto out; | |
3530 | status = decode_setattr(&xdr, res); | |
3531 | if (status) | |
3532 | goto out; | |
3533 | status = decode_getfattr(&xdr, res->fattr, res->server); | |
3534 | if (status == NFS4ERR_DELAY) | |
3535 | status = 0; | |
3536 | out: | |
3537 | return status; | |
3538 | } | |
3539 | ||
3540 | /* | |
3541 | * Decode LOCK response | |
3542 | */ | |
3543 | static int nfs4_xdr_dec_lock(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3544 | { | |
3545 | struct xdr_stream xdr; | |
3546 | struct compound_hdr hdr; | |
3547 | int status; | |
3548 | ||
3549 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3550 | status = decode_compound_hdr(&xdr, &hdr); | |
3551 | if (status) | |
3552 | goto out; | |
3553 | status = decode_putfh(&xdr); | |
3554 | if (status) | |
3555 | goto out; | |
3556 | status = decode_lock(&xdr, res); | |
3557 | out: | |
3558 | return status; | |
3559 | } | |
3560 | ||
3561 | /* | |
3562 | * Decode LOCKT response | |
3563 | */ | |
3564 | static int nfs4_xdr_dec_lockt(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3565 | { | |
3566 | struct xdr_stream xdr; | |
3567 | struct compound_hdr hdr; | |
3568 | int status; | |
3569 | ||
3570 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3571 | status = decode_compound_hdr(&xdr, &hdr); | |
3572 | if (status) | |
3573 | goto out; | |
3574 | status = decode_putfh(&xdr); | |
3575 | if (status) | |
3576 | goto out; | |
3577 | status = decode_lockt(&xdr, res); | |
3578 | out: | |
3579 | return status; | |
3580 | } | |
3581 | ||
3582 | /* | |
3583 | * Decode LOCKU response | |
3584 | */ | |
3585 | static int nfs4_xdr_dec_locku(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_lockres *res) | |
3586 | { | |
3587 | struct xdr_stream xdr; | |
3588 | struct compound_hdr hdr; | |
3589 | int status; | |
3590 | ||
3591 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3592 | status = decode_compound_hdr(&xdr, &hdr); | |
3593 | if (status) | |
3594 | goto out; | |
3595 | status = decode_putfh(&xdr); | |
3596 | if (status) | |
3597 | goto out; | |
3598 | status = decode_locku(&xdr, res); | |
3599 | out: | |
3600 | return status; | |
3601 | } | |
3602 | ||
3603 | /* | |
3604 | * Decode READLINK response | |
3605 | */ | |
3606 | static int nfs4_xdr_dec_readlink(struct rpc_rqst *rqstp, uint32_t *p, void *res) | |
3607 | { | |
3608 | struct xdr_stream xdr; | |
3609 | struct compound_hdr hdr; | |
3610 | int status; | |
3611 | ||
3612 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3613 | status = decode_compound_hdr(&xdr, &hdr); | |
3614 | if (status) | |
3615 | goto out; | |
3616 | status = decode_putfh(&xdr); | |
3617 | if (status) | |
3618 | goto out; | |
3619 | status = decode_readlink(&xdr, rqstp); | |
3620 | out: | |
3621 | return status; | |
3622 | } | |
3623 | ||
3624 | /* | |
3625 | * Decode READDIR response | |
3626 | */ | |
3627 | static int nfs4_xdr_dec_readdir(struct rpc_rqst *rqstp, uint32_t *p, struct nfs4_readdir_res *res) | |
3628 | { | |
3629 | struct xdr_stream xdr; | |
3630 | struct compound_hdr hdr; | |
3631 | int status; | |
3632 | ||
3633 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3634 | status = decode_compound_hdr(&xdr, &hdr); | |
3635 | if (status) | |
3636 | goto out; | |
3637 | status = decode_putfh(&xdr); | |
3638 | if (status) | |
3639 | goto out; | |
3640 | status = decode_readdir(&xdr, rqstp, res); | |
3641 | out: | |
3642 | return status; | |
3643 | } | |
3644 | ||
3645 | /* | |
3646 | * Decode Read response | |
3647 | */ | |
3648 | static int nfs4_xdr_dec_read(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_readres *res) | |
3649 | { | |
3650 | struct xdr_stream xdr; | |
3651 | struct compound_hdr hdr; | |
3652 | int status; | |
3653 | ||
3654 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3655 | status = decode_compound_hdr(&xdr, &hdr); | |
3656 | if (status) | |
3657 | goto out; | |
3658 | status = decode_putfh(&xdr); | |
3659 | if (status) | |
3660 | goto out; | |
3661 | status = decode_read(&xdr, rqstp, res); | |
3662 | if (!status) | |
3663 | status = res->count; | |
3664 | out: | |
3665 | return status; | |
3666 | } | |
3667 | ||
3668 | /* | |
3669 | * Decode WRITE response | |
3670 | */ | |
3671 | static int nfs4_xdr_dec_write(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3672 | { | |
3673 | struct xdr_stream xdr; | |
3674 | struct compound_hdr hdr; | |
3675 | int status; | |
3676 | ||
3677 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3678 | status = decode_compound_hdr(&xdr, &hdr); | |
3679 | if (status) | |
3680 | goto out; | |
3681 | status = decode_putfh(&xdr); | |
3682 | if (status) | |
3683 | goto out; | |
3684 | status = decode_write(&xdr, res); | |
3685 | if (!status) | |
3686 | status = res->count; | |
3687 | out: | |
3688 | return status; | |
3689 | } | |
3690 | ||
3691 | /* | |
3692 | * Decode COMMIT response | |
3693 | */ | |
3694 | static int nfs4_xdr_dec_commit(struct rpc_rqst *rqstp, uint32_t *p, struct nfs_writeres *res) | |
3695 | { | |
3696 | struct xdr_stream xdr; | |
3697 | struct compound_hdr hdr; | |
3698 | int status; | |
3699 | ||
3700 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3701 | status = decode_compound_hdr(&xdr, &hdr); | |
3702 | if (status) | |
3703 | goto out; | |
3704 | status = decode_putfh(&xdr); | |
3705 | if (status) | |
3706 | goto out; | |
3707 | status = decode_commit(&xdr, res); | |
3708 | out: | |
3709 | return status; | |
3710 | } | |
3711 | ||
3712 | /* | |
3713 | * FSINFO request | |
3714 | */ | |
3715 | static int nfs4_xdr_dec_fsinfo(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3716 | { | |
3717 | struct xdr_stream xdr; | |
3718 | struct compound_hdr hdr; | |
3719 | int status; | |
3720 | ||
3721 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3722 | status = decode_compound_hdr(&xdr, &hdr); | |
3723 | if (!status) | |
3724 | status = decode_putfh(&xdr); | |
3725 | if (!status) | |
3726 | status = decode_fsinfo(&xdr, fsinfo); | |
3727 | if (!status) | |
3728 | status = -nfs_stat_to_errno(hdr.status); | |
3729 | return status; | |
3730 | } | |
3731 | ||
3732 | /* | |
3733 | * PATHCONF request | |
3734 | */ | |
3735 | static int nfs4_xdr_dec_pathconf(struct rpc_rqst *req, uint32_t *p, struct nfs_pathconf *pathconf) | |
3736 | { | |
3737 | struct xdr_stream xdr; | |
3738 | struct compound_hdr hdr; | |
3739 | int status; | |
3740 | ||
3741 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3742 | status = decode_compound_hdr(&xdr, &hdr); | |
3743 | if (!status) | |
3744 | status = decode_putfh(&xdr); | |
3745 | if (!status) | |
3746 | status = decode_pathconf(&xdr, pathconf); | |
3747 | return status; | |
3748 | } | |
3749 | ||
3750 | /* | |
3751 | * STATFS request | |
3752 | */ | |
3753 | static int nfs4_xdr_dec_statfs(struct rpc_rqst *req, uint32_t *p, struct nfs_fsstat *fsstat) | |
3754 | { | |
3755 | struct xdr_stream xdr; | |
3756 | struct compound_hdr hdr; | |
3757 | int status; | |
3758 | ||
3759 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3760 | status = decode_compound_hdr(&xdr, &hdr); | |
3761 | if (!status) | |
3762 | status = decode_putfh(&xdr); | |
3763 | if (!status) | |
3764 | status = decode_statfs(&xdr, fsstat); | |
3765 | return status; | |
3766 | } | |
3767 | ||
3768 | /* | |
3769 | * GETATTR_BITMAP request | |
3770 | */ | |
3771 | static int nfs4_xdr_dec_server_caps(struct rpc_rqst *req, uint32_t *p, struct nfs4_server_caps_res *res) | |
3772 | { | |
3773 | struct xdr_stream xdr; | |
3774 | struct compound_hdr hdr; | |
3775 | int status; | |
3776 | ||
3777 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3778 | if ((status = decode_compound_hdr(&xdr, &hdr)) != 0) | |
3779 | goto out; | |
3780 | if ((status = decode_putfh(&xdr)) != 0) | |
3781 | goto out; | |
3782 | status = decode_server_caps(&xdr, res); | |
3783 | out: | |
3784 | return status; | |
3785 | } | |
3786 | ||
3787 | /* | |
3788 | * Decode RENEW response | |
3789 | */ | |
3790 | static int nfs4_xdr_dec_renew(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3791 | { | |
3792 | struct xdr_stream xdr; | |
3793 | struct compound_hdr hdr; | |
3794 | int status; | |
3795 | ||
3796 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3797 | status = decode_compound_hdr(&xdr, &hdr); | |
3798 | if (!status) | |
3799 | status = decode_renew(&xdr); | |
3800 | return status; | |
3801 | } | |
3802 | ||
3803 | /* | |
3804 | * a SETCLIENTID request | |
3805 | */ | |
3806 | static int nfs4_xdr_dec_setclientid(struct rpc_rqst *req, uint32_t *p, | |
3807 | struct nfs4_client *clp) | |
3808 | { | |
3809 | struct xdr_stream xdr; | |
3810 | struct compound_hdr hdr; | |
3811 | int status; | |
3812 | ||
3813 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3814 | status = decode_compound_hdr(&xdr, &hdr); | |
3815 | if (!status) | |
3816 | status = decode_setclientid(&xdr, clp); | |
3817 | if (!status) | |
3818 | status = -nfs_stat_to_errno(hdr.status); | |
3819 | return status; | |
3820 | } | |
3821 | ||
3822 | /* | |
3823 | * a SETCLIENTID_CONFIRM request | |
3824 | */ | |
3825 | static int nfs4_xdr_dec_setclientid_confirm(struct rpc_rqst *req, uint32_t *p, struct nfs_fsinfo *fsinfo) | |
3826 | { | |
3827 | struct xdr_stream xdr; | |
3828 | struct compound_hdr hdr; | |
3829 | int status; | |
3830 | ||
3831 | xdr_init_decode(&xdr, &req->rq_rcv_buf, p); | |
3832 | status = decode_compound_hdr(&xdr, &hdr); | |
3833 | if (!status) | |
3834 | status = decode_setclientid_confirm(&xdr); | |
3835 | if (!status) | |
3836 | status = decode_putrootfh(&xdr); | |
3837 | if (!status) | |
3838 | status = decode_fsinfo(&xdr, fsinfo); | |
3839 | if (!status) | |
3840 | status = -nfs_stat_to_errno(hdr.status); | |
3841 | return status; | |
3842 | } | |
3843 | ||
3844 | /* | |
3845 | * DELEGRETURN request | |
3846 | */ | |
3847 | static int nfs4_xdr_dec_delegreturn(struct rpc_rqst *rqstp, uint32_t *p, void *dummy) | |
3848 | { | |
3849 | struct xdr_stream xdr; | |
3850 | struct compound_hdr hdr; | |
3851 | int status; | |
3852 | ||
3853 | xdr_init_decode(&xdr, &rqstp->rq_rcv_buf, p); | |
3854 | status = decode_compound_hdr(&xdr, &hdr); | |
3855 | if (status == 0) { | |
3856 | status = decode_putfh(&xdr); | |
3857 | if (status == 0) | |
3858 | status = decode_delegreturn(&xdr); | |
3859 | } | |
3860 | return status; | |
3861 | } | |
3862 | ||
3863 | uint32_t *nfs4_decode_dirent(uint32_t *p, struct nfs_entry *entry, int plus) | |
3864 | { | |
3865 | uint32_t bitmap[2] = {0}; | |
3866 | uint32_t len; | |
3867 | ||
3868 | if (!*p++) { | |
3869 | if (!*p) | |
3870 | return ERR_PTR(-EAGAIN); | |
3871 | entry->eof = 1; | |
3872 | return ERR_PTR(-EBADCOOKIE); | |
3873 | } | |
3874 | ||
3875 | entry->prev_cookie = entry->cookie; | |
3876 | p = xdr_decode_hyper(p, &entry->cookie); | |
3877 | entry->len = ntohl(*p++); | |
3878 | entry->name = (const char *) p; | |
3879 | p += XDR_QUADLEN(entry->len); | |
3880 | ||
3881 | /* | |
3882 | * In case the server doesn't return an inode number, | |
3883 | * we fake one here. (We don't use inode number 0, | |
3884 | * since glibc seems to choke on it...) | |
3885 | */ | |
3886 | entry->ino = 1; | |
3887 | ||
3888 | len = ntohl(*p++); /* bitmap length */ | |
3889 | if (len-- > 0) { | |
3890 | bitmap[0] = ntohl(*p++); | |
3891 | if (len-- > 0) { | |
3892 | bitmap[1] = ntohl(*p++); | |
3893 | p += len; | |
3894 | } | |
3895 | } | |
3896 | len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */ | |
3897 | if (len > 0) { | |
3898 | if (bitmap[0] == 0 && bitmap[1] == FATTR4_WORD1_MOUNTED_ON_FILEID) | |
3899 | xdr_decode_hyper(p, &entry->ino); | |
3900 | else if (bitmap[0] == FATTR4_WORD0_FILEID) | |
3901 | xdr_decode_hyper(p, &entry->ino); | |
3902 | p += len; | |
3903 | } | |
3904 | ||
3905 | entry->eof = !p[0] && p[1]; | |
3906 | return p; | |
3907 | } | |
3908 | ||
3909 | /* | |
3910 | * We need to translate between nfs status return values and | |
3911 | * the local errno values which may not be the same. | |
3912 | */ | |
3913 | static struct { | |
3914 | int stat; | |
3915 | int errno; | |
3916 | } nfs_errtbl[] = { | |
3917 | { NFS4_OK, 0 }, | |
3918 | { NFS4ERR_PERM, EPERM }, | |
3919 | { NFS4ERR_NOENT, ENOENT }, | |
3920 | { NFS4ERR_IO, errno_NFSERR_IO }, | |
3921 | { NFS4ERR_NXIO, ENXIO }, | |
3922 | { NFS4ERR_ACCESS, EACCES }, | |
3923 | { NFS4ERR_EXIST, EEXIST }, | |
3924 | { NFS4ERR_XDEV, EXDEV }, | |
3925 | { NFS4ERR_NOTDIR, ENOTDIR }, | |
3926 | { NFS4ERR_ISDIR, EISDIR }, | |
3927 | { NFS4ERR_INVAL, EINVAL }, | |
3928 | { NFS4ERR_FBIG, EFBIG }, | |
3929 | { NFS4ERR_NOSPC, ENOSPC }, | |
3930 | { NFS4ERR_ROFS, EROFS }, | |
3931 | { NFS4ERR_MLINK, EMLINK }, | |
3932 | { NFS4ERR_NAMETOOLONG, ENAMETOOLONG }, | |
3933 | { NFS4ERR_NOTEMPTY, ENOTEMPTY }, | |
3934 | { NFS4ERR_DQUOT, EDQUOT }, | |
3935 | { NFS4ERR_STALE, ESTALE }, | |
3936 | { NFS4ERR_BADHANDLE, EBADHANDLE }, | |
3937 | { NFS4ERR_BAD_COOKIE, EBADCOOKIE }, | |
3938 | { NFS4ERR_NOTSUPP, ENOTSUPP }, | |
3939 | { NFS4ERR_TOOSMALL, ETOOSMALL }, | |
3940 | { NFS4ERR_SERVERFAULT, ESERVERFAULT }, | |
3941 | { NFS4ERR_BADTYPE, EBADTYPE }, | |
3942 | { NFS4ERR_LOCKED, EAGAIN }, | |
3943 | { NFS4ERR_RESOURCE, EREMOTEIO }, | |
3944 | { NFS4ERR_SYMLINK, ELOOP }, | |
3945 | { NFS4ERR_OP_ILLEGAL, EOPNOTSUPP }, | |
3946 | { NFS4ERR_DEADLOCK, EDEADLK }, | |
3947 | { NFS4ERR_WRONGSEC, EPERM }, /* FIXME: this needs | |
3948 | * to be handled by a | |
3949 | * middle-layer. | |
3950 | */ | |
3951 | { -1, EIO } | |
3952 | }; | |
3953 | ||
3954 | /* | |
3955 | * Convert an NFS error code to a local one. | |
3956 | * This one is used jointly by NFSv2 and NFSv3. | |
3957 | */ | |
3958 | static int | |
3959 | nfs_stat_to_errno(int stat) | |
3960 | { | |
3961 | int i; | |
3962 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { | |
3963 | if (nfs_errtbl[i].stat == stat) | |
3964 | return nfs_errtbl[i].errno; | |
3965 | } | |
3966 | if (stat <= 10000 || stat > 10100) { | |
3967 | /* The server is looney tunes. */ | |
3968 | return ESERVERFAULT; | |
3969 | } | |
3970 | /* If we cannot translate the error, the recovery routines should | |
3971 | * handle it. | |
3972 | * Note: remaining NFSv4 error codes have values > 10000, so should | |
3973 | * not conflict with native Linux error codes. | |
3974 | */ | |
3975 | return stat; | |
3976 | } | |
3977 | ||
3978 | #ifndef MAX | |
3979 | # define MAX(a, b) (((a) > (b))? (a) : (b)) | |
3980 | #endif | |
3981 | ||
3982 | #define PROC(proc, argtype, restype) \ | |
3983 | [NFSPROC4_CLNT_##proc] = { \ | |
3984 | .p_proc = NFSPROC4_COMPOUND, \ | |
3985 | .p_encode = (kxdrproc_t) nfs4_xdr_##argtype, \ | |
3986 | .p_decode = (kxdrproc_t) nfs4_xdr_##restype, \ | |
3987 | .p_bufsiz = MAX(NFS4_##argtype##_sz,NFS4_##restype##_sz) << 2, \ | |
3988 | } | |
3989 | ||
3990 | struct rpc_procinfo nfs4_procedures[] = { | |
3991 | PROC(READ, enc_read, dec_read), | |
3992 | PROC(WRITE, enc_write, dec_write), | |
3993 | PROC(COMMIT, enc_commit, dec_commit), | |
3994 | PROC(OPEN, enc_open, dec_open), | |
3995 | PROC(OPEN_CONFIRM, enc_open_confirm, dec_open_confirm), | |
3996 | PROC(OPEN_NOATTR, enc_open_noattr, dec_open_noattr), | |
3997 | PROC(OPEN_DOWNGRADE, enc_open_downgrade, dec_open_downgrade), | |
3998 | PROC(CLOSE, enc_close, dec_close), | |
3999 | PROC(SETATTR, enc_setattr, dec_setattr), | |
4000 | PROC(FSINFO, enc_fsinfo, dec_fsinfo), | |
4001 | PROC(RENEW, enc_renew, dec_renew), | |
4002 | PROC(SETCLIENTID, enc_setclientid, dec_setclientid), | |
4003 | PROC(SETCLIENTID_CONFIRM, enc_setclientid_confirm, dec_setclientid_confirm), | |
4004 | PROC(LOCK, enc_lock, dec_lock), | |
4005 | PROC(LOCKT, enc_lockt, dec_lockt), | |
4006 | PROC(LOCKU, enc_locku, dec_locku), | |
4007 | PROC(ACCESS, enc_access, dec_access), | |
4008 | PROC(GETATTR, enc_getattr, dec_getattr), | |
4009 | PROC(LOOKUP, enc_lookup, dec_lookup), | |
4010 | PROC(LOOKUP_ROOT, enc_lookup_root, dec_lookup_root), | |
4011 | PROC(REMOVE, enc_remove, dec_remove), | |
4012 | PROC(RENAME, enc_rename, dec_rename), | |
4013 | PROC(LINK, enc_link, dec_link), | |
4014 | PROC(SYMLINK, enc_symlink, dec_symlink), | |
4015 | PROC(CREATE, enc_create, dec_create), | |
4016 | PROC(PATHCONF, enc_pathconf, dec_pathconf), | |
4017 | PROC(STATFS, enc_statfs, dec_statfs), | |
4018 | PROC(READLINK, enc_readlink, dec_readlink), | |
4019 | PROC(READDIR, enc_readdir, dec_readdir), | |
4020 | PROC(SERVER_CAPS, enc_server_caps, dec_server_caps), | |
4021 | PROC(DELEGRETURN, enc_delegreturn, dec_delegreturn), | |
4022 | }; | |
4023 | ||
4024 | struct rpc_version nfs_version4 = { | |
4025 | .number = 4, | |
4026 | .nrprocs = sizeof(nfs4_procedures)/sizeof(nfs4_procedures[0]), | |
4027 | .procs = nfs4_procedures | |
4028 | }; | |
4029 | ||
4030 | /* | |
4031 | * Local variables: | |
4032 | * c-basic-offset: 8 | |
4033 | * End: | |
4034 | */ |