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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/nfs3xdr.c | |
3 | * | |
4 | * XDR functions to encode/decode NFSv3 RPC arguments and results. | |
5 | * | |
6 | * Copyright (C) 1996, 1997 Olaf Kirch | |
7 | */ | |
8 | ||
9 | #include <linux/param.h> | |
10 | #include <linux/time.h> | |
11 | #include <linux/mm.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/utsname.h> | |
14 | #include <linux/errno.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/in.h> | |
17 | #include <linux/pagemap.h> | |
18 | #include <linux/proc_fs.h> | |
19 | #include <linux/kdev_t.h> | |
20 | #include <linux/sunrpc/clnt.h> | |
21 | #include <linux/nfs.h> | |
22 | #include <linux/nfs3.h> | |
23 | #include <linux/nfs_fs.h> | |
b7fa0554 | 24 | #include <linux/nfsacl.h> |
f7b422b1 | 25 | #include "internal.h" |
1da177e4 LT |
26 | |
27 | #define NFSDBG_FACILITY NFSDBG_XDR | |
28 | ||
29 | /* Mapping from NFS error code to "errno" error code. */ | |
30 | #define errno_NFSERR_IO EIO | |
31 | ||
1da177e4 LT |
32 | /* |
33 | * Declare the space requirements for NFS arguments and replies as | |
34 | * number of 32bit-words | |
35 | */ | |
36 | #define NFS3_fhandle_sz (1+16) | |
37 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ | |
38 | #define NFS3_sattr_sz (15) | |
39 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) | |
40 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) | |
41 | #define NFS3_fattr_sz (21) | |
42 | #define NFS3_wcc_attr_sz (6) | |
43 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) | |
44 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) | |
45 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) | |
46 | #define NFS3_fsstat_sz | |
47 | #define NFS3_fsinfo_sz | |
48 | #define NFS3_pathconf_sz | |
49 | #define NFS3_entry_sz (NFS3_filename_sz+3) | |
50 | ||
51 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) | |
52 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) | |
4fdc17b2 | 53 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
1da177e4 LT |
54 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
55 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) | |
56 | #define NFS3_readargs_sz (NFS3_fh_sz+3) | |
57 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) | |
58 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
59 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
94a6d753 | 60 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
1da177e4 LT |
61 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
62 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) | |
63 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) | |
64 | #define NFS3_readdirargs_sz (NFS3_fh_sz+2) | |
65 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) | |
66 | ||
67 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) | |
68 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) | |
4fdc17b2 | 69 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
1da177e4 LT |
70 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
71 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) | |
72 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) | |
73 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) | |
74 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) | |
75 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
76 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) | |
77 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
78 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) | |
79 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) | |
80 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) | |
81 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) | |
82 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) | |
83 | ||
b7fa0554 AG |
84 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
85 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3)) | |
86 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3)) | |
87 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) | |
88 | ||
1da177e4 LT |
89 | /* |
90 | * Map file type to S_IFMT bits | |
91 | */ | |
92 | static struct { | |
93 | unsigned int mode; | |
94 | unsigned int nfs2type; | |
95 | } nfs_type2fmt[] = { | |
96 | { 0, NFNON }, | |
97 | { S_IFREG, NFREG }, | |
98 | { S_IFDIR, NFDIR }, | |
99 | { S_IFBLK, NFBLK }, | |
100 | { S_IFCHR, NFCHR }, | |
101 | { S_IFLNK, NFLNK }, | |
102 | { S_IFSOCK, NFSOCK }, | |
103 | { S_IFIFO, NFFIFO }, | |
104 | { 0, NFBAD } | |
105 | }; | |
106 | ||
107 | /* | |
108 | * Common NFS XDR functions as inlines | |
109 | */ | |
d61005a6 | 110 | static inline __be32 * |
4fdc17b2 | 111 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
1da177e4 LT |
112 | { |
113 | return xdr_encode_array(p, fh->data, fh->size); | |
114 | } | |
115 | ||
d61005a6 AV |
116 | static inline __be32 * |
117 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) | |
1da177e4 LT |
118 | { |
119 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
120 | memcpy(fh->data, p, fh->size); | |
121 | return p + XDR_QUADLEN(fh->size); | |
122 | } | |
123 | return NULL; | |
124 | } | |
125 | ||
126 | /* | |
127 | * Encode/decode time. | |
128 | */ | |
d61005a6 AV |
129 | static inline __be32 * |
130 | xdr_encode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
131 | { |
132 | *p++ = htonl(timep->tv_sec); | |
133 | *p++ = htonl(timep->tv_nsec); | |
134 | return p; | |
135 | } | |
136 | ||
d61005a6 AV |
137 | static inline __be32 * |
138 | xdr_decode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
139 | { |
140 | timep->tv_sec = ntohl(*p++); | |
141 | timep->tv_nsec = ntohl(*p++); | |
142 | return p; | |
143 | } | |
144 | ||
d61005a6 AV |
145 | static __be32 * |
146 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
147 | { |
148 | unsigned int type, major, minor; | |
149 | int fmode; | |
150 | ||
151 | type = ntohl(*p++); | |
152 | if (type >= NF3BAD) | |
153 | type = NF3BAD; | |
154 | fmode = nfs_type2fmt[type].mode; | |
155 | fattr->type = nfs_type2fmt[type].nfs2type; | |
156 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; | |
157 | fattr->nlink = ntohl(*p++); | |
158 | fattr->uid = ntohl(*p++); | |
159 | fattr->gid = ntohl(*p++); | |
160 | p = xdr_decode_hyper(p, &fattr->size); | |
161 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
162 | ||
163 | /* Turn remote device info into Linux-specific dev_t */ | |
164 | major = ntohl(*p++); | |
165 | minor = ntohl(*p++); | |
166 | fattr->rdev = MKDEV(major, minor); | |
167 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
168 | fattr->rdev = 0; | |
169 | ||
8b4bdcf8 TM |
170 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
171 | fattr->fsid.minor = 0; | |
1da177e4 LT |
172 | p = xdr_decode_hyper(p, &fattr->fileid); |
173 | p = xdr_decode_time3(p, &fattr->atime); | |
174 | p = xdr_decode_time3(p, &fattr->mtime); | |
175 | p = xdr_decode_time3(p, &fattr->ctime); | |
176 | ||
177 | /* Update the mode bits */ | |
178 | fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3); | |
1da177e4 LT |
179 | return p; |
180 | } | |
181 | ||
d61005a6 AV |
182 | static inline __be32 * |
183 | xdr_encode_sattr(__be32 *p, struct iattr *attr) | |
1da177e4 LT |
184 | { |
185 | if (attr->ia_valid & ATTR_MODE) { | |
186 | *p++ = xdr_one; | |
cf3fff54 | 187 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
188 | } else { |
189 | *p++ = xdr_zero; | |
190 | } | |
191 | if (attr->ia_valid & ATTR_UID) { | |
192 | *p++ = xdr_one; | |
193 | *p++ = htonl(attr->ia_uid); | |
194 | } else { | |
195 | *p++ = xdr_zero; | |
196 | } | |
197 | if (attr->ia_valid & ATTR_GID) { | |
198 | *p++ = xdr_one; | |
199 | *p++ = htonl(attr->ia_gid); | |
200 | } else { | |
201 | *p++ = xdr_zero; | |
202 | } | |
203 | if (attr->ia_valid & ATTR_SIZE) { | |
204 | *p++ = xdr_one; | |
205 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
206 | } else { | |
207 | *p++ = xdr_zero; | |
208 | } | |
209 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
210 | *p++ = xdr_two; | |
211 | p = xdr_encode_time3(p, &attr->ia_atime); | |
212 | } else if (attr->ia_valid & ATTR_ATIME) { | |
213 | *p++ = xdr_one; | |
214 | } else { | |
215 | *p++ = xdr_zero; | |
216 | } | |
217 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
218 | *p++ = xdr_two; | |
219 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
220 | } else if (attr->ia_valid & ATTR_MTIME) { | |
221 | *p++ = xdr_one; | |
222 | } else { | |
223 | *p++ = xdr_zero; | |
224 | } | |
225 | return p; | |
226 | } | |
227 | ||
d61005a6 AV |
228 | static inline __be32 * |
229 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
230 | { |
231 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
232 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
233 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
234 | fattr->valid |= NFS_ATTR_WCC; | |
235 | return p; | |
236 | } | |
237 | ||
d61005a6 AV |
238 | static inline __be32 * |
239 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
240 | { |
241 | if (*p++) | |
242 | p = xdr_decode_fattr(p, fattr); | |
243 | return p; | |
244 | } | |
245 | ||
d61005a6 AV |
246 | static inline __be32 * |
247 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
248 | { |
249 | if (*p++) | |
250 | return xdr_decode_wcc_attr(p, fattr); | |
251 | return p; | |
252 | } | |
253 | ||
254 | ||
d61005a6 AV |
255 | static inline __be32 * |
256 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
257 | { |
258 | p = xdr_decode_pre_op_attr(p, fattr); | |
259 | return xdr_decode_post_op_attr(p, fattr); | |
260 | } | |
261 | ||
262 | /* | |
263 | * NFS encode functions | |
264 | */ | |
265 | ||
266 | /* | |
267 | * Encode file handle argument | |
268 | */ | |
269 | static int | |
d61005a6 | 270 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
1da177e4 LT |
271 | { |
272 | p = xdr_encode_fhandle(p, fh); | |
273 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
274 | return 0; | |
275 | } | |
276 | ||
277 | /* | |
278 | * Encode SETATTR arguments | |
279 | */ | |
280 | static int | |
d61005a6 | 281 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
1da177e4 LT |
282 | { |
283 | p = xdr_encode_fhandle(p, args->fh); | |
284 | p = xdr_encode_sattr(p, args->sattr); | |
285 | *p++ = htonl(args->guard); | |
286 | if (args->guard) | |
287 | p = xdr_encode_time3(p, &args->guardtime); | |
288 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
289 | return 0; | |
290 | } | |
291 | ||
292 | /* | |
293 | * Encode directory ops argument | |
294 | */ | |
295 | static int | |
d61005a6 | 296 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
1da177e4 LT |
297 | { |
298 | p = xdr_encode_fhandle(p, args->fh); | |
299 | p = xdr_encode_array(p, args->name, args->len); | |
300 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
301 | return 0; | |
302 | } | |
303 | ||
4fdc17b2 TM |
304 | /* |
305 | * Encode REMOVE argument | |
306 | */ | |
307 | static int | |
308 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) | |
309 | { | |
310 | p = xdr_encode_fhandle(p, args->fh); | |
311 | p = xdr_encode_array(p, args->name.name, args->name.len); | |
312 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
313 | return 0; | |
314 | } | |
315 | ||
1da177e4 LT |
316 | /* |
317 | * Encode access() argument | |
318 | */ | |
319 | static int | |
d61005a6 | 320 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
1da177e4 LT |
321 | { |
322 | p = xdr_encode_fhandle(p, args->fh); | |
323 | *p++ = htonl(args->access); | |
324 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
325 | return 0; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Arguments to a READ call. Since we read data directly into the page | |
330 | * cache, we also set up the reply iovec here so that iov[1] points | |
331 | * exactly to the page we want to fetch. | |
332 | */ | |
333 | static int | |
d61005a6 | 334 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
1da177e4 | 335 | { |
1be27f36 | 336 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
337 | unsigned int replen; |
338 | u32 count = args->count; | |
339 | ||
340 | p = xdr_encode_fhandle(p, args->fh); | |
341 | p = xdr_encode_hyper(p, args->offset); | |
342 | *p++ = htonl(count); | |
343 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
344 | ||
345 | /* Inline the page array */ | |
346 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
347 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
348 | args->pages, args->pgbase, count); | |
349 | return 0; | |
350 | } | |
351 | ||
352 | /* | |
353 | * Write arguments. Splice the buffer to be written into the iovec. | |
354 | */ | |
355 | static int | |
d61005a6 | 356 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
357 | { |
358 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
359 | u32 count = args->count; | |
360 | ||
361 | p = xdr_encode_fhandle(p, args->fh); | |
362 | p = xdr_encode_hyper(p, args->offset); | |
363 | *p++ = htonl(count); | |
364 | *p++ = htonl(args->stable); | |
365 | *p++ = htonl(count); | |
366 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
367 | ||
368 | /* Copy the page array */ | |
369 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
370 | return 0; | |
371 | } | |
372 | ||
373 | /* | |
374 | * Encode CREATE arguments | |
375 | */ | |
376 | static int | |
d61005a6 | 377 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
378 | { |
379 | p = xdr_encode_fhandle(p, args->fh); | |
380 | p = xdr_encode_array(p, args->name, args->len); | |
381 | ||
382 | *p++ = htonl(args->createmode); | |
383 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
384 | *p++ = args->verifier[0]; | |
385 | *p++ = args->verifier[1]; | |
386 | } else | |
387 | p = xdr_encode_sattr(p, args->sattr); | |
388 | ||
389 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | /* | |
394 | * Encode MKDIR arguments | |
395 | */ | |
396 | static int | |
d61005a6 | 397 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
398 | { |
399 | p = xdr_encode_fhandle(p, args->fh); | |
400 | p = xdr_encode_array(p, args->name, args->len); | |
401 | p = xdr_encode_sattr(p, args->sattr); | |
402 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
403 | return 0; | |
404 | } | |
405 | ||
406 | /* | |
407 | * Encode SYMLINK arguments | |
408 | */ | |
409 | static int | |
d61005a6 | 410 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
411 | { |
412 | p = xdr_encode_fhandle(p, args->fromfh); | |
413 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
414 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 415 | *p++ = htonl(args->pathlen); |
1da177e4 | 416 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
417 | |
418 | /* Copy the page */ | |
419 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
420 | return 0; |
421 | } | |
422 | ||
423 | /* | |
424 | * Encode MKNOD arguments | |
425 | */ | |
426 | static int | |
d61005a6 | 427 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
428 | { |
429 | p = xdr_encode_fhandle(p, args->fh); | |
430 | p = xdr_encode_array(p, args->name, args->len); | |
431 | *p++ = htonl(args->type); | |
432 | p = xdr_encode_sattr(p, args->sattr); | |
433 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
434 | *p++ = htonl(MAJOR(args->rdev)); | |
435 | *p++ = htonl(MINOR(args->rdev)); | |
436 | } | |
437 | ||
438 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
439 | return 0; | |
440 | } | |
441 | ||
442 | /* | |
443 | * Encode RENAME arguments | |
444 | */ | |
445 | static int | |
d61005a6 | 446 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
1da177e4 LT |
447 | { |
448 | p = xdr_encode_fhandle(p, args->fromfh); | |
449 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
450 | p = xdr_encode_fhandle(p, args->tofh); | |
451 | p = xdr_encode_array(p, args->toname, args->tolen); | |
452 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
453 | return 0; | |
454 | } | |
455 | ||
456 | /* | |
457 | * Encode LINK arguments | |
458 | */ | |
459 | static int | |
d61005a6 | 460 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
461 | { |
462 | p = xdr_encode_fhandle(p, args->fromfh); | |
463 | p = xdr_encode_fhandle(p, args->tofh); | |
464 | p = xdr_encode_array(p, args->toname, args->tolen); | |
465 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
466 | return 0; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Encode arguments to readdir call | |
471 | */ | |
472 | static int | |
d61005a6 | 473 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 474 | { |
1be27f36 | 475 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
476 | unsigned int replen; |
477 | u32 count = args->count; | |
478 | ||
479 | p = xdr_encode_fhandle(p, args->fh); | |
480 | p = xdr_encode_hyper(p, args->cookie); | |
481 | *p++ = args->verf[0]; | |
482 | *p++ = args->verf[1]; | |
483 | if (args->plus) { | |
484 | /* readdirplus: need dircount + buffer size. | |
485 | * We just make sure we make dircount big enough */ | |
486 | *p++ = htonl(count >> 3); | |
487 | } | |
488 | *p++ = htonl(count); | |
489 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
490 | ||
491 | /* Inline the page array */ | |
492 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
493 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | /* | |
498 | * Decode the result of a readdir call. | |
499 | * We just check for syntactical correctness. | |
500 | */ | |
501 | static int | |
d61005a6 | 502 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
503 | { |
504 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
505 | struct kvec *iov = rcvbuf->head; | |
506 | struct page **page; | |
507 | int hdrlen, recvd; | |
508 | int status, nr; | |
509 | unsigned int len, pglen; | |
d61005a6 | 510 | __be32 *entry, *end, *kaddr; |
1da177e4 LT |
511 | |
512 | status = ntohl(*p++); | |
513 | /* Decode post_op_attrs */ | |
514 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
515 | if (status) | |
516 | return -nfs_stat_to_errno(status); | |
517 | /* Decode verifier cookie */ | |
518 | if (res->verf) { | |
519 | res->verf[0] = *p++; | |
520 | res->verf[1] = *p++; | |
521 | } else { | |
522 | p += 2; | |
523 | } | |
524 | ||
525 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
526 | if (iov->iov_len < hdrlen) { | |
527 | printk(KERN_WARNING "NFS: READDIR reply header overflowed:" | |
528 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
529 | return -errno_NFSERR_IO; | |
530 | } else if (iov->iov_len != hdrlen) { | |
531 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
532 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
533 | } | |
534 | ||
535 | pglen = rcvbuf->page_len; | |
536 | recvd = rcvbuf->len - hdrlen; | |
537 | if (pglen > recvd) | |
538 | pglen = recvd; | |
539 | page = rcvbuf->pages; | |
d61005a6 AV |
540 | kaddr = p = kmap_atomic(*page, KM_USER0); |
541 | end = (__be32 *)((char *)p + pglen); | |
1da177e4 LT |
542 | entry = p; |
543 | for (nr = 0; *p++; nr++) { | |
544 | if (p + 3 > end) | |
545 | goto short_pkt; | |
546 | p += 2; /* inode # */ | |
547 | len = ntohl(*p++); /* string length */ | |
548 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
549 | if (len > NFS3_MAXNAMLEN) { | |
550 | printk(KERN_WARNING "NFS: giant filename in readdir (len %x)!\n", | |
551 | len); | |
552 | goto err_unmap; | |
553 | } | |
554 | ||
555 | if (res->plus) { | |
556 | /* post_op_attr */ | |
557 | if (p + 2 > end) | |
558 | goto short_pkt; | |
559 | if (*p++) { | |
560 | p += 21; | |
561 | if (p + 1 > end) | |
562 | goto short_pkt; | |
563 | } | |
564 | /* post_op_fh3 */ | |
565 | if (*p++) { | |
566 | if (p + 1 > end) | |
567 | goto short_pkt; | |
568 | len = ntohl(*p++); | |
569 | if (len > NFS3_FHSIZE) { | |
570 | printk(KERN_WARNING "NFS: giant filehandle in " | |
571 | "readdir (len %x)!\n", len); | |
572 | goto err_unmap; | |
573 | } | |
574 | p += XDR_QUADLEN(len); | |
575 | } | |
576 | } | |
577 | ||
578 | if (p + 2 > end) | |
579 | goto short_pkt; | |
580 | entry = p; | |
581 | } | |
582 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
583 | goto short_pkt; | |
584 | out: | |
585 | kunmap_atomic(kaddr, KM_USER0); | |
586 | return nr; | |
587 | short_pkt: | |
588 | entry[0] = entry[1] = 0; | |
589 | /* truncate listing ? */ | |
590 | if (!nr) { | |
591 | printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); | |
592 | entry[1] = 1; | |
593 | } | |
594 | goto out; | |
595 | err_unmap: | |
596 | nr = -errno_NFSERR_IO; | |
597 | goto out; | |
598 | } | |
599 | ||
0dbb4c67 AV |
600 | __be32 * |
601 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) | |
1da177e4 LT |
602 | { |
603 | struct nfs_entry old = *entry; | |
604 | ||
605 | if (!*p++) { | |
606 | if (!*p) | |
607 | return ERR_PTR(-EAGAIN); | |
608 | entry->eof = 1; | |
609 | return ERR_PTR(-EBADCOOKIE); | |
610 | } | |
611 | ||
612 | p = xdr_decode_hyper(p, &entry->ino); | |
613 | entry->len = ntohl(*p++); | |
614 | entry->name = (const char *) p; | |
615 | p += XDR_QUADLEN(entry->len); | |
616 | entry->prev_cookie = entry->cookie; | |
617 | p = xdr_decode_hyper(p, &entry->cookie); | |
618 | ||
619 | if (plus) { | |
620 | entry->fattr->valid = 0; | |
621 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
622 | /* In fact, a post_op_fh3: */ | |
623 | if (*p++) { | |
624 | p = xdr_decode_fhandle(p, entry->fh); | |
625 | /* Ugh -- server reply was truncated */ | |
626 | if (p == NULL) { | |
627 | dprintk("NFS: FH truncated\n"); | |
628 | *entry = old; | |
629 | return ERR_PTR(-EAGAIN); | |
630 | } | |
631 | } else | |
632 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
633 | } | |
634 | ||
635 | entry->eof = !p[0] && p[1]; | |
636 | return p; | |
637 | } | |
638 | ||
639 | /* | |
640 | * Encode COMMIT arguments | |
641 | */ | |
642 | static int | |
d61005a6 | 643 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
644 | { |
645 | p = xdr_encode_fhandle(p, args->fh); | |
646 | p = xdr_encode_hyper(p, args->offset); | |
647 | *p++ = htonl(args->count); | |
648 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
649 | return 0; | |
650 | } | |
651 | ||
b7fa0554 AG |
652 | #ifdef CONFIG_NFS_V3_ACL |
653 | /* | |
654 | * Encode GETACL arguments | |
655 | */ | |
656 | static int | |
d61005a6 | 657 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
658 | struct nfs3_getaclargs *args) |
659 | { | |
1be27f36 | 660 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
b7fa0554 AG |
661 | unsigned int replen; |
662 | ||
663 | p = xdr_encode_fhandle(p, args->fh); | |
664 | *p++ = htonl(args->mask); | |
665 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
666 | ||
667 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
668 | /* Inline the page array */ | |
669 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
670 | ACL3_getaclres_sz) << 2; | |
671 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
672 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
673 | } | |
674 | return 0; | |
675 | } | |
676 | ||
677 | /* | |
678 | * Encode SETACL arguments | |
679 | */ | |
680 | static int | |
d61005a6 | 681 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
682 | struct nfs3_setaclargs *args) |
683 | { | |
684 | struct xdr_buf *buf = &req->rq_snd_buf; | |
685 | unsigned int base, len_in_head, len = nfsacl_size( | |
686 | (args->mask & NFS_ACL) ? args->acl_access : NULL, | |
687 | (args->mask & NFS_DFACL) ? args->acl_default : NULL); | |
688 | int count, err; | |
689 | ||
690 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
691 | *p++ = htonl(args->mask); | |
692 | base = (char *)p - (char *)buf->head->iov_base; | |
693 | /* put as much of the acls into head as possible. */ | |
694 | len_in_head = min_t(unsigned int, buf->head->iov_len - base, len); | |
695 | len -= len_in_head; | |
21348425 | 696 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2)); |
b7fa0554 AG |
697 | |
698 | for (count = 0; (count << PAGE_SHIFT) < len; count++) { | |
699 | args->pages[count] = alloc_page(GFP_KERNEL); | |
700 | if (!args->pages[count]) { | |
701 | while (count) | |
702 | __free_page(args->pages[--count]); | |
703 | return -ENOMEM; | |
704 | } | |
705 | } | |
706 | xdr_encode_pages(buf, args->pages, 0, len); | |
707 | ||
708 | err = nfsacl_encode(buf, base, args->inode, | |
709 | (args->mask & NFS_ACL) ? | |
710 | args->acl_access : NULL, 1, 0); | |
711 | if (err > 0) | |
712 | err = nfsacl_encode(buf, base + err, args->inode, | |
713 | (args->mask & NFS_DFACL) ? | |
714 | args->acl_default : NULL, 1, | |
715 | NFS_ACL_DEFAULT); | |
716 | return (err > 0) ? 0 : err; | |
717 | } | |
718 | #endif /* CONFIG_NFS_V3_ACL */ | |
719 | ||
1da177e4 LT |
720 | /* |
721 | * NFS XDR decode functions | |
722 | */ | |
723 | ||
724 | /* | |
725 | * Decode attrstat reply. | |
726 | */ | |
727 | static int | |
d61005a6 | 728 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
729 | { |
730 | int status; | |
731 | ||
732 | if ((status = ntohl(*p++))) | |
733 | return -nfs_stat_to_errno(status); | |
734 | xdr_decode_fattr(p, fattr); | |
735 | return 0; | |
736 | } | |
737 | ||
738 | /* | |
739 | * Decode status+wcc_data reply | |
740 | * SATTR, REMOVE, RMDIR | |
741 | */ | |
742 | static int | |
d61005a6 | 743 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
744 | { |
745 | int status; | |
746 | ||
747 | if ((status = ntohl(*p++))) | |
748 | status = -nfs_stat_to_errno(status); | |
749 | xdr_decode_wcc_data(p, fattr); | |
750 | return status; | |
751 | } | |
752 | ||
4fdc17b2 TM |
753 | static int |
754 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
755 | { | |
756 | return nfs3_xdr_wccstat(req, p, &res->dir_attr); | |
757 | } | |
758 | ||
1da177e4 LT |
759 | /* |
760 | * Decode LOOKUP reply | |
761 | */ | |
762 | static int | |
d61005a6 | 763 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
764 | { |
765 | int status; | |
766 | ||
767 | if ((status = ntohl(*p++))) { | |
768 | status = -nfs_stat_to_errno(status); | |
769 | } else { | |
770 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
771 | return -errno_NFSERR_IO; | |
772 | p = xdr_decode_post_op_attr(p, res->fattr); | |
773 | } | |
774 | xdr_decode_post_op_attr(p, res->dir_attr); | |
775 | return status; | |
776 | } | |
777 | ||
778 | /* | |
779 | * Decode ACCESS reply | |
780 | */ | |
781 | static int | |
d61005a6 | 782 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
783 | { |
784 | int status = ntohl(*p++); | |
785 | ||
786 | p = xdr_decode_post_op_attr(p, res->fattr); | |
787 | if (status) | |
788 | return -nfs_stat_to_errno(status); | |
789 | res->access = ntohl(*p++); | |
790 | return 0; | |
791 | } | |
792 | ||
793 | static int | |
d61005a6 | 794 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 795 | { |
1be27f36 | 796 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
797 | unsigned int replen; |
798 | ||
799 | p = xdr_encode_fhandle(p, args->fh); | |
800 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
801 | ||
802 | /* Inline the page array */ | |
803 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
804 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
805 | return 0; | |
806 | } | |
807 | ||
808 | /* | |
809 | * Decode READLINK reply | |
810 | */ | |
811 | static int | |
d61005a6 | 812 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
813 | { |
814 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
815 | struct kvec *iov = rcvbuf->head; | |
816 | int hdrlen, len, recvd; | |
817 | char *kaddr; | |
818 | int status; | |
819 | ||
820 | status = ntohl(*p++); | |
821 | p = xdr_decode_post_op_attr(p, fattr); | |
822 | ||
823 | if (status != 0) | |
824 | return -nfs_stat_to_errno(status); | |
825 | ||
826 | /* Convert length of symlink */ | |
827 | len = ntohl(*p++); | |
828 | if (len >= rcvbuf->page_len || len <= 0) { | |
829 | dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); | |
830 | return -ENAMETOOLONG; | |
831 | } | |
832 | ||
833 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
834 | if (iov->iov_len < hdrlen) { | |
835 | printk(KERN_WARNING "NFS: READLINK reply header overflowed:" | |
836 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
837 | return -errno_NFSERR_IO; | |
838 | } else if (iov->iov_len != hdrlen) { | |
839 | dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); | |
840 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
841 | } | |
842 | recvd = req->rq_rcv_buf.len - hdrlen; | |
843 | if (recvd < len) { | |
844 | printk(KERN_WARNING "NFS: server cheating in readlink reply: " | |
845 | "count %u > recvd %u\n", len, recvd); | |
846 | return -EIO; | |
847 | } | |
848 | ||
849 | /* NULL terminate the string we got */ | |
850 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
851 | kaddr[len+rcvbuf->page_base] = '\0'; | |
852 | kunmap_atomic(kaddr, KM_USER0); | |
853 | return 0; | |
854 | } | |
855 | ||
856 | /* | |
857 | * Decode READ reply | |
858 | */ | |
859 | static int | |
d61005a6 | 860 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
861 | { |
862 | struct kvec *iov = req->rq_rcv_buf.head; | |
863 | int status, count, ocount, recvd, hdrlen; | |
864 | ||
865 | status = ntohl(*p++); | |
866 | p = xdr_decode_post_op_attr(p, res->fattr); | |
867 | ||
868 | if (status != 0) | |
869 | return -nfs_stat_to_errno(status); | |
870 | ||
871 | /* Decode reply could and EOF flag. NFSv3 is somewhat redundant | |
872 | * in that it puts the count both in the res struct and in the | |
873 | * opaque data count. */ | |
874 | count = ntohl(*p++); | |
875 | res->eof = ntohl(*p++); | |
876 | ocount = ntohl(*p++); | |
877 | ||
878 | if (ocount != count) { | |
879 | printk(KERN_WARNING "NFS: READ count doesn't match RPC opaque count.\n"); | |
880 | return -errno_NFSERR_IO; | |
881 | } | |
882 | ||
883 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
884 | if (iov->iov_len < hdrlen) { | |
885 | printk(KERN_WARNING "NFS: READ reply header overflowed:" | |
886 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
887 | return -errno_NFSERR_IO; | |
888 | } else if (iov->iov_len != hdrlen) { | |
889 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
890 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
891 | } | |
892 | ||
893 | recvd = req->rq_rcv_buf.len - hdrlen; | |
894 | if (count > recvd) { | |
895 | printk(KERN_WARNING "NFS: server cheating in read reply: " | |
896 | "count %d > recvd %d\n", count, recvd); | |
897 | count = recvd; | |
898 | res->eof = 0; | |
899 | } | |
900 | ||
901 | if (count < res->count) | |
902 | res->count = count; | |
903 | ||
904 | return count; | |
905 | } | |
906 | ||
907 | /* | |
908 | * Decode WRITE response | |
909 | */ | |
910 | static int | |
d61005a6 | 911 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
912 | { |
913 | int status; | |
914 | ||
915 | status = ntohl(*p++); | |
916 | p = xdr_decode_wcc_data(p, res->fattr); | |
917 | ||
918 | if (status != 0) | |
919 | return -nfs_stat_to_errno(status); | |
920 | ||
921 | res->count = ntohl(*p++); | |
922 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
923 | res->verf->verifier[0] = *p++; | |
924 | res->verf->verifier[1] = *p++; | |
925 | ||
926 | return res->count; | |
927 | } | |
928 | ||
929 | /* | |
930 | * Decode a CREATE response | |
931 | */ | |
932 | static int | |
d61005a6 | 933 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
934 | { |
935 | int status; | |
936 | ||
937 | status = ntohl(*p++); | |
938 | if (status == 0) { | |
939 | if (*p++) { | |
940 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
941 | return -errno_NFSERR_IO; | |
942 | p = xdr_decode_post_op_attr(p, res->fattr); | |
943 | } else { | |
944 | memset(res->fh, 0, sizeof(*res->fh)); | |
945 | /* Do decode post_op_attr but set it to NULL */ | |
946 | p = xdr_decode_post_op_attr(p, res->fattr); | |
947 | res->fattr->valid = 0; | |
948 | } | |
949 | } else { | |
950 | status = -nfs_stat_to_errno(status); | |
951 | } | |
952 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
953 | return status; | |
954 | } | |
955 | ||
956 | /* | |
957 | * Decode RENAME reply | |
958 | */ | |
959 | static int | |
d61005a6 | 960 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
1da177e4 LT |
961 | { |
962 | int status; | |
963 | ||
964 | if ((status = ntohl(*p++)) != 0) | |
965 | status = -nfs_stat_to_errno(status); | |
966 | p = xdr_decode_wcc_data(p, res->fromattr); | |
967 | p = xdr_decode_wcc_data(p, res->toattr); | |
968 | return status; | |
969 | } | |
970 | ||
971 | /* | |
972 | * Decode LINK reply | |
973 | */ | |
974 | static int | |
d61005a6 | 975 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
976 | { |
977 | int status; | |
978 | ||
979 | if ((status = ntohl(*p++)) != 0) | |
980 | status = -nfs_stat_to_errno(status); | |
981 | p = xdr_decode_post_op_attr(p, res->fattr); | |
982 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
983 | return status; | |
984 | } | |
985 | ||
986 | /* | |
987 | * Decode FSSTAT reply | |
988 | */ | |
989 | static int | |
d61005a6 | 990 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
991 | { |
992 | int status; | |
993 | ||
994 | status = ntohl(*p++); | |
995 | ||
996 | p = xdr_decode_post_op_attr(p, res->fattr); | |
997 | if (status != 0) | |
998 | return -nfs_stat_to_errno(status); | |
999 | ||
1000 | p = xdr_decode_hyper(p, &res->tbytes); | |
1001 | p = xdr_decode_hyper(p, &res->fbytes); | |
1002 | p = xdr_decode_hyper(p, &res->abytes); | |
1003 | p = xdr_decode_hyper(p, &res->tfiles); | |
1004 | p = xdr_decode_hyper(p, &res->ffiles); | |
1005 | p = xdr_decode_hyper(p, &res->afiles); | |
1006 | ||
1007 | /* ignore invarsec */ | |
1008 | return 0; | |
1009 | } | |
1010 | ||
1011 | /* | |
1012 | * Decode FSINFO reply | |
1013 | */ | |
1014 | static int | |
d61005a6 | 1015 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1016 | { |
1017 | int status; | |
1018 | ||
1019 | status = ntohl(*p++); | |
1020 | ||
1021 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1022 | if (status != 0) | |
1023 | return -nfs_stat_to_errno(status); | |
1024 | ||
1025 | res->rtmax = ntohl(*p++); | |
1026 | res->rtpref = ntohl(*p++); | |
1027 | res->rtmult = ntohl(*p++); | |
1028 | res->wtmax = ntohl(*p++); | |
1029 | res->wtpref = ntohl(*p++); | |
1030 | res->wtmult = ntohl(*p++); | |
1031 | res->dtpref = ntohl(*p++); | |
1032 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1033 | ||
1034 | /* ignore time_delta and properties */ | |
1035 | res->lease_time = 0; | |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | /* | |
1040 | * Decode PATHCONF reply | |
1041 | */ | |
1042 | static int | |
d61005a6 | 1043 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1044 | { |
1045 | int status; | |
1046 | ||
1047 | status = ntohl(*p++); | |
1048 | ||
1049 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1050 | if (status != 0) | |
1051 | return -nfs_stat_to_errno(status); | |
1052 | res->max_link = ntohl(*p++); | |
1053 | res->max_namelen = ntohl(*p++); | |
1054 | ||
1055 | /* ignore remaining fields */ | |
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | /* | |
1060 | * Decode COMMIT reply | |
1061 | */ | |
1062 | static int | |
d61005a6 | 1063 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1064 | { |
1065 | int status; | |
1066 | ||
1067 | status = ntohl(*p++); | |
1068 | p = xdr_decode_wcc_data(p, res->fattr); | |
1069 | if (status != 0) | |
1070 | return -nfs_stat_to_errno(status); | |
1071 | ||
1072 | res->verf->verifier[0] = *p++; | |
1073 | res->verf->verifier[1] = *p++; | |
1074 | return 0; | |
1075 | } | |
1076 | ||
b7fa0554 AG |
1077 | #ifdef CONFIG_NFS_V3_ACL |
1078 | /* | |
1079 | * Decode GETACL reply | |
1080 | */ | |
1081 | static int | |
d61005a6 | 1082 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1083 | struct nfs3_getaclres *res) |
1084 | { | |
1085 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1086 | int status = ntohl(*p++); | |
1087 | struct posix_acl **acl; | |
1088 | unsigned int *aclcnt; | |
1089 | int err, base; | |
1090 | ||
1091 | if (status != 0) | |
1092 | return -nfs_stat_to_errno(status); | |
1093 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1094 | res->mask = ntohl(*p++); | |
1095 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1096 | return -EINVAL; | |
1097 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1098 | ||
1099 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1100 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1101 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1102 | ||
1103 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1104 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1105 | if (err > 0) | |
1106 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1107 | return (err > 0) ? 0 : err; | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * Decode setacl reply. | |
1112 | */ | |
1113 | static int | |
d61005a6 | 1114 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1115 | { |
1116 | int status = ntohl(*p++); | |
1117 | ||
1118 | if (status) | |
1119 | return -nfs_stat_to_errno(status); | |
1120 | xdr_decode_post_op_attr(p, fattr); | |
1121 | return 0; | |
1122 | } | |
1123 | #endif /* CONFIG_NFS_V3_ACL */ | |
1124 | ||
1da177e4 LT |
1125 | #define PROC(proc, argtype, restype, timer) \ |
1126 | [NFS3PROC_##proc] = { \ | |
1127 | .p_proc = NFS3PROC_##proc, \ | |
1128 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1129 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
2bea90d4 CL |
1130 | .p_arglen = NFS3_##argtype##_sz, \ |
1131 | .p_replen = NFS3_##restype##_sz, \ | |
cc0175c1 CL |
1132 | .p_timer = timer, \ |
1133 | .p_statidx = NFS3PROC_##proc, \ | |
1134 | .p_name = #proc, \ | |
1da177e4 LT |
1135 | } |
1136 | ||
1137 | struct rpc_procinfo nfs3_procedures[] = { | |
1138 | PROC(GETATTR, fhandle, attrstat, 1), | |
1139 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1140 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1141 | PROC(ACCESS, accessargs, accessres, 1), | |
1142 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1143 | PROC(READ, readargs, readres, 3), | |
1144 | PROC(WRITE, writeargs, writeres, 4), | |
1145 | PROC(CREATE, createargs, createres, 0), | |
1146 | PROC(MKDIR, mkdirargs, createres, 0), | |
1147 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1148 | PROC(MKNOD, mknodargs, createres, 0), | |
4fdc17b2 | 1149 | PROC(REMOVE, removeargs, removeres, 0), |
1da177e4 LT |
1150 | PROC(RMDIR, diropargs, wccstat, 0), |
1151 | PROC(RENAME, renameargs, renameres, 0), | |
1152 | PROC(LINK, linkargs, linkres, 0), | |
1153 | PROC(READDIR, readdirargs, readdirres, 3), | |
1154 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1155 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1156 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1157 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1158 | PROC(COMMIT, commitargs, commitres, 5), | |
1159 | }; | |
1160 | ||
1161 | struct rpc_version nfs_version3 = { | |
1162 | .number = 3, | |
e8c96f8c | 1163 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1164 | .procs = nfs3_procedures |
1165 | }; | |
1166 | ||
b7fa0554 AG |
1167 | #ifdef CONFIG_NFS_V3_ACL |
1168 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1169 | [ACLPROC3_GETACL] = { | |
1170 | .p_proc = ACLPROC3_GETACL, | |
1171 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1172 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
2bea90d4 CL |
1173 | .p_arglen = ACL3_getaclargs_sz, |
1174 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 1175 | .p_timer = 1, |
cc0175c1 | 1176 | .p_name = "GETACL", |
b7fa0554 AG |
1177 | }, |
1178 | [ACLPROC3_SETACL] = { | |
1179 | .p_proc = ACLPROC3_SETACL, | |
1180 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1181 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
2bea90d4 CL |
1182 | .p_arglen = ACL3_setaclargs_sz, |
1183 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 1184 | .p_timer = 0, |
cc0175c1 | 1185 | .p_name = "SETACL", |
b7fa0554 AG |
1186 | }, |
1187 | }; | |
1188 | ||
1189 | struct rpc_version nfsacl_version3 = { | |
1190 | .number = 3, | |
1191 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1192 | sizeof(nfs3_acl_procedures[0]), | |
1193 | .procs = nfs3_acl_procedures, | |
1194 | }; | |
1195 | #endif /* CONFIG_NFS_V3_ACL */ |