Commit | Line | Data |
---|---|---|
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); | |
4f22ccc3 | 349 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
1da177e4 LT |
350 | return 0; |
351 | } | |
352 | ||
353 | /* | |
354 | * Write arguments. Splice the buffer to be written into the iovec. | |
355 | */ | |
356 | static int | |
d61005a6 | 357 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
358 | { |
359 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
360 | u32 count = args->count; | |
361 | ||
362 | p = xdr_encode_fhandle(p, args->fh); | |
363 | p = xdr_encode_hyper(p, args->offset); | |
364 | *p++ = htonl(count); | |
365 | *p++ = htonl(args->stable); | |
366 | *p++ = htonl(count); | |
367 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
368 | ||
369 | /* Copy the page array */ | |
370 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
4f22ccc3 | 371 | sndbuf->flags |= XDRBUF_WRITE; |
1da177e4 LT |
372 | return 0; |
373 | } | |
374 | ||
375 | /* | |
376 | * Encode CREATE arguments | |
377 | */ | |
378 | static int | |
d61005a6 | 379 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
380 | { |
381 | p = xdr_encode_fhandle(p, args->fh); | |
382 | p = xdr_encode_array(p, args->name, args->len); | |
383 | ||
384 | *p++ = htonl(args->createmode); | |
385 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
386 | *p++ = args->verifier[0]; | |
387 | *p++ = args->verifier[1]; | |
388 | } else | |
389 | p = xdr_encode_sattr(p, args->sattr); | |
390 | ||
391 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
392 | return 0; | |
393 | } | |
394 | ||
395 | /* | |
396 | * Encode MKDIR arguments | |
397 | */ | |
398 | static int | |
d61005a6 | 399 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
400 | { |
401 | p = xdr_encode_fhandle(p, args->fh); | |
402 | p = xdr_encode_array(p, args->name, args->len); | |
403 | p = xdr_encode_sattr(p, args->sattr); | |
404 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
405 | return 0; | |
406 | } | |
407 | ||
408 | /* | |
409 | * Encode SYMLINK arguments | |
410 | */ | |
411 | static int | |
d61005a6 | 412 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
413 | { |
414 | p = xdr_encode_fhandle(p, args->fromfh); | |
415 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
416 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 417 | *p++ = htonl(args->pathlen); |
1da177e4 | 418 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
419 | |
420 | /* Copy the page */ | |
421 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
422 | return 0; |
423 | } | |
424 | ||
425 | /* | |
426 | * Encode MKNOD arguments | |
427 | */ | |
428 | static int | |
d61005a6 | 429 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
430 | { |
431 | p = xdr_encode_fhandle(p, args->fh); | |
432 | p = xdr_encode_array(p, args->name, args->len); | |
433 | *p++ = htonl(args->type); | |
434 | p = xdr_encode_sattr(p, args->sattr); | |
435 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
436 | *p++ = htonl(MAJOR(args->rdev)); | |
437 | *p++ = htonl(MINOR(args->rdev)); | |
438 | } | |
439 | ||
440 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
441 | return 0; | |
442 | } | |
443 | ||
444 | /* | |
445 | * Encode RENAME arguments | |
446 | */ | |
447 | static int | |
d61005a6 | 448 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
1da177e4 LT |
449 | { |
450 | p = xdr_encode_fhandle(p, args->fromfh); | |
451 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
452 | p = xdr_encode_fhandle(p, args->tofh); | |
453 | p = xdr_encode_array(p, args->toname, args->tolen); | |
454 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* | |
459 | * Encode LINK arguments | |
460 | */ | |
461 | static int | |
d61005a6 | 462 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
463 | { |
464 | p = xdr_encode_fhandle(p, args->fromfh); | |
465 | p = xdr_encode_fhandle(p, args->tofh); | |
466 | p = xdr_encode_array(p, args->toname, args->tolen); | |
467 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
468 | return 0; | |
469 | } | |
470 | ||
471 | /* | |
472 | * Encode arguments to readdir call | |
473 | */ | |
474 | static int | |
d61005a6 | 475 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 476 | { |
1be27f36 | 477 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
478 | unsigned int replen; |
479 | u32 count = args->count; | |
480 | ||
481 | p = xdr_encode_fhandle(p, args->fh); | |
482 | p = xdr_encode_hyper(p, args->cookie); | |
483 | *p++ = args->verf[0]; | |
484 | *p++ = args->verf[1]; | |
485 | if (args->plus) { | |
486 | /* readdirplus: need dircount + buffer size. | |
487 | * We just make sure we make dircount big enough */ | |
488 | *p++ = htonl(count >> 3); | |
489 | } | |
490 | *p++ = htonl(count); | |
491 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
492 | ||
493 | /* Inline the page array */ | |
494 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
495 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
496 | return 0; | |
497 | } | |
498 | ||
499 | /* | |
500 | * Decode the result of a readdir call. | |
501 | * We just check for syntactical correctness. | |
502 | */ | |
503 | static int | |
d61005a6 | 504 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
505 | { |
506 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
507 | struct kvec *iov = rcvbuf->head; | |
508 | struct page **page; | |
c957c526 CL |
509 | size_t hdrlen; |
510 | u32 len, recvd, pglen; | |
1da177e4 | 511 | int status, nr; |
d61005a6 | 512 | __be32 *entry, *end, *kaddr; |
1da177e4 LT |
513 | |
514 | status = ntohl(*p++); | |
515 | /* Decode post_op_attrs */ | |
516 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
517 | if (status) | |
518 | return -nfs_stat_to_errno(status); | |
519 | /* Decode verifier cookie */ | |
520 | if (res->verf) { | |
521 | res->verf[0] = *p++; | |
522 | res->verf[1] = *p++; | |
523 | } else { | |
524 | p += 2; | |
525 | } | |
526 | ||
527 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
528 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 529 | dprintk("NFS: READDIR reply header overflowed:" |
c957c526 | 530 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
531 | return -errno_NFSERR_IO; |
532 | } else if (iov->iov_len != hdrlen) { | |
533 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
534 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
535 | } | |
536 | ||
537 | pglen = rcvbuf->page_len; | |
538 | recvd = rcvbuf->len - hdrlen; | |
539 | if (pglen > recvd) | |
540 | pglen = recvd; | |
541 | page = rcvbuf->pages; | |
d61005a6 AV |
542 | kaddr = p = kmap_atomic(*page, KM_USER0); |
543 | end = (__be32 *)((char *)p + pglen); | |
1da177e4 LT |
544 | entry = p; |
545 | for (nr = 0; *p++; nr++) { | |
546 | if (p + 3 > end) | |
547 | goto short_pkt; | |
548 | p += 2; /* inode # */ | |
549 | len = ntohl(*p++); /* string length */ | |
550 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
551 | if (len > NFS3_MAXNAMLEN) { | |
c957c526 | 552 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
1da177e4 LT |
553 | len); |
554 | goto err_unmap; | |
555 | } | |
556 | ||
557 | if (res->plus) { | |
558 | /* post_op_attr */ | |
559 | if (p + 2 > end) | |
560 | goto short_pkt; | |
561 | if (*p++) { | |
562 | p += 21; | |
563 | if (p + 1 > end) | |
564 | goto short_pkt; | |
565 | } | |
566 | /* post_op_fh3 */ | |
567 | if (*p++) { | |
568 | if (p + 1 > end) | |
569 | goto short_pkt; | |
570 | len = ntohl(*p++); | |
571 | if (len > NFS3_FHSIZE) { | |
fe82a183 | 572 | dprintk("NFS: giant filehandle in " |
c957c526 | 573 | "readdir (len 0x%x)!\n", len); |
1da177e4 LT |
574 | goto err_unmap; |
575 | } | |
576 | p += XDR_QUADLEN(len); | |
577 | } | |
578 | } | |
579 | ||
580 | if (p + 2 > end) | |
581 | goto short_pkt; | |
582 | entry = p; | |
583 | } | |
584 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
585 | goto short_pkt; | |
586 | out: | |
587 | kunmap_atomic(kaddr, KM_USER0); | |
588 | return nr; | |
589 | short_pkt: | |
590 | entry[0] = entry[1] = 0; | |
591 | /* truncate listing ? */ | |
592 | if (!nr) { | |
fe82a183 | 593 | dprintk("NFS: readdir reply truncated!\n"); |
1da177e4 LT |
594 | entry[1] = 1; |
595 | } | |
596 | goto out; | |
597 | err_unmap: | |
598 | nr = -errno_NFSERR_IO; | |
599 | goto out; | |
600 | } | |
601 | ||
0dbb4c67 AV |
602 | __be32 * |
603 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) | |
1da177e4 LT |
604 | { |
605 | struct nfs_entry old = *entry; | |
606 | ||
607 | if (!*p++) { | |
608 | if (!*p) | |
609 | return ERR_PTR(-EAGAIN); | |
610 | entry->eof = 1; | |
611 | return ERR_PTR(-EBADCOOKIE); | |
612 | } | |
613 | ||
614 | p = xdr_decode_hyper(p, &entry->ino); | |
615 | entry->len = ntohl(*p++); | |
616 | entry->name = (const char *) p; | |
617 | p += XDR_QUADLEN(entry->len); | |
618 | entry->prev_cookie = entry->cookie; | |
619 | p = xdr_decode_hyper(p, &entry->cookie); | |
620 | ||
621 | if (plus) { | |
622 | entry->fattr->valid = 0; | |
623 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
624 | /* In fact, a post_op_fh3: */ | |
625 | if (*p++) { | |
626 | p = xdr_decode_fhandle(p, entry->fh); | |
627 | /* Ugh -- server reply was truncated */ | |
628 | if (p == NULL) { | |
629 | dprintk("NFS: FH truncated\n"); | |
630 | *entry = old; | |
631 | return ERR_PTR(-EAGAIN); | |
632 | } | |
633 | } else | |
634 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
635 | } | |
636 | ||
637 | entry->eof = !p[0] && p[1]; | |
638 | return p; | |
639 | } | |
640 | ||
641 | /* | |
642 | * Encode COMMIT arguments | |
643 | */ | |
644 | static int | |
d61005a6 | 645 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
646 | { |
647 | p = xdr_encode_fhandle(p, args->fh); | |
648 | p = xdr_encode_hyper(p, args->offset); | |
649 | *p++ = htonl(args->count); | |
650 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
651 | return 0; | |
652 | } | |
653 | ||
b7fa0554 AG |
654 | #ifdef CONFIG_NFS_V3_ACL |
655 | /* | |
656 | * Encode GETACL arguments | |
657 | */ | |
658 | static int | |
d61005a6 | 659 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
660 | struct nfs3_getaclargs *args) |
661 | { | |
1be27f36 | 662 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
b7fa0554 AG |
663 | unsigned int replen; |
664 | ||
665 | p = xdr_encode_fhandle(p, args->fh); | |
666 | *p++ = htonl(args->mask); | |
667 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
668 | ||
669 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
670 | /* Inline the page array */ | |
671 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
672 | ACL3_getaclres_sz) << 2; | |
673 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
674 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
675 | } | |
676 | return 0; | |
677 | } | |
678 | ||
679 | /* | |
680 | * Encode SETACL arguments | |
681 | */ | |
682 | static int | |
d61005a6 | 683 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
684 | struct nfs3_setaclargs *args) |
685 | { | |
686 | struct xdr_buf *buf = &req->rq_snd_buf; | |
687 | unsigned int base, len_in_head, len = nfsacl_size( | |
688 | (args->mask & NFS_ACL) ? args->acl_access : NULL, | |
689 | (args->mask & NFS_DFACL) ? args->acl_default : NULL); | |
690 | int count, err; | |
691 | ||
692 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
693 | *p++ = htonl(args->mask); | |
694 | base = (char *)p - (char *)buf->head->iov_base; | |
695 | /* put as much of the acls into head as possible. */ | |
696 | len_in_head = min_t(unsigned int, buf->head->iov_len - base, len); | |
697 | len -= len_in_head; | |
21348425 | 698 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2)); |
b7fa0554 AG |
699 | |
700 | for (count = 0; (count << PAGE_SHIFT) < len; count++) { | |
701 | args->pages[count] = alloc_page(GFP_KERNEL); | |
702 | if (!args->pages[count]) { | |
703 | while (count) | |
704 | __free_page(args->pages[--count]); | |
705 | return -ENOMEM; | |
706 | } | |
707 | } | |
708 | xdr_encode_pages(buf, args->pages, 0, len); | |
709 | ||
710 | err = nfsacl_encode(buf, base, args->inode, | |
711 | (args->mask & NFS_ACL) ? | |
712 | args->acl_access : NULL, 1, 0); | |
713 | if (err > 0) | |
714 | err = nfsacl_encode(buf, base + err, args->inode, | |
715 | (args->mask & NFS_DFACL) ? | |
716 | args->acl_default : NULL, 1, | |
717 | NFS_ACL_DEFAULT); | |
718 | return (err > 0) ? 0 : err; | |
719 | } | |
720 | #endif /* CONFIG_NFS_V3_ACL */ | |
721 | ||
1da177e4 LT |
722 | /* |
723 | * NFS XDR decode functions | |
724 | */ | |
725 | ||
726 | /* | |
727 | * Decode attrstat reply. | |
728 | */ | |
729 | static int | |
d61005a6 | 730 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
731 | { |
732 | int status; | |
733 | ||
734 | if ((status = ntohl(*p++))) | |
735 | return -nfs_stat_to_errno(status); | |
736 | xdr_decode_fattr(p, fattr); | |
737 | return 0; | |
738 | } | |
739 | ||
740 | /* | |
741 | * Decode status+wcc_data reply | |
742 | * SATTR, REMOVE, RMDIR | |
743 | */ | |
744 | static int | |
d61005a6 | 745 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
746 | { |
747 | int status; | |
748 | ||
749 | if ((status = ntohl(*p++))) | |
750 | status = -nfs_stat_to_errno(status); | |
751 | xdr_decode_wcc_data(p, fattr); | |
752 | return status; | |
753 | } | |
754 | ||
4fdc17b2 TM |
755 | static int |
756 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
757 | { | |
758 | return nfs3_xdr_wccstat(req, p, &res->dir_attr); | |
759 | } | |
760 | ||
1da177e4 LT |
761 | /* |
762 | * Decode LOOKUP reply | |
763 | */ | |
764 | static int | |
d61005a6 | 765 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
766 | { |
767 | int status; | |
768 | ||
769 | if ((status = ntohl(*p++))) { | |
770 | status = -nfs_stat_to_errno(status); | |
771 | } else { | |
772 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
773 | return -errno_NFSERR_IO; | |
774 | p = xdr_decode_post_op_attr(p, res->fattr); | |
775 | } | |
776 | xdr_decode_post_op_attr(p, res->dir_attr); | |
777 | return status; | |
778 | } | |
779 | ||
780 | /* | |
781 | * Decode ACCESS reply | |
782 | */ | |
783 | static int | |
d61005a6 | 784 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
785 | { |
786 | int status = ntohl(*p++); | |
787 | ||
788 | p = xdr_decode_post_op_attr(p, res->fattr); | |
789 | if (status) | |
790 | return -nfs_stat_to_errno(status); | |
791 | res->access = ntohl(*p++); | |
792 | return 0; | |
793 | } | |
794 | ||
795 | static int | |
d61005a6 | 796 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 797 | { |
1be27f36 | 798 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
799 | unsigned int replen; |
800 | ||
801 | p = xdr_encode_fhandle(p, args->fh); | |
802 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
803 | ||
804 | /* Inline the page array */ | |
805 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
806 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
807 | return 0; | |
808 | } | |
809 | ||
810 | /* | |
811 | * Decode READLINK reply | |
812 | */ | |
813 | static int | |
d61005a6 | 814 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
815 | { |
816 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
817 | struct kvec *iov = rcvbuf->head; | |
c957c526 CL |
818 | size_t hdrlen; |
819 | u32 len, recvd; | |
1da177e4 LT |
820 | char *kaddr; |
821 | int status; | |
822 | ||
823 | status = ntohl(*p++); | |
824 | p = xdr_decode_post_op_attr(p, fattr); | |
825 | ||
826 | if (status != 0) | |
827 | return -nfs_stat_to_errno(status); | |
828 | ||
829 | /* Convert length of symlink */ | |
830 | len = ntohl(*p++); | |
c957c526 | 831 | if (len >= rcvbuf->page_len) { |
fe82a183 | 832 | dprintk("nfs: server returned giant symlink!\n"); |
1da177e4 LT |
833 | return -ENAMETOOLONG; |
834 | } | |
835 | ||
836 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
837 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 838 | dprintk("NFS: READLINK reply header overflowed:" |
c957c526 | 839 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
840 | return -errno_NFSERR_IO; |
841 | } else if (iov->iov_len != hdrlen) { | |
fe82a183 CL |
842 | dprintk("NFS: READLINK header is short. " |
843 | "iovec will be shifted.\n"); | |
1da177e4 LT |
844 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
845 | } | |
846 | recvd = req->rq_rcv_buf.len - hdrlen; | |
847 | if (recvd < len) { | |
fe82a183 | 848 | dprintk("NFS: server cheating in readlink reply: " |
1da177e4 LT |
849 | "count %u > recvd %u\n", len, recvd); |
850 | return -EIO; | |
851 | } | |
852 | ||
853 | /* NULL terminate the string we got */ | |
854 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
855 | kaddr[len+rcvbuf->page_base] = '\0'; | |
856 | kunmap_atomic(kaddr, KM_USER0); | |
857 | return 0; | |
858 | } | |
859 | ||
860 | /* | |
861 | * Decode READ reply | |
862 | */ | |
863 | static int | |
d61005a6 | 864 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
865 | { |
866 | struct kvec *iov = req->rq_rcv_buf.head; | |
c957c526 CL |
867 | size_t hdrlen; |
868 | u32 count, ocount, recvd; | |
869 | int status; | |
1da177e4 LT |
870 | |
871 | status = ntohl(*p++); | |
872 | p = xdr_decode_post_op_attr(p, res->fattr); | |
873 | ||
874 | if (status != 0) | |
875 | return -nfs_stat_to_errno(status); | |
876 | ||
c957c526 | 877 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
1da177e4 LT |
878 | * in that it puts the count both in the res struct and in the |
879 | * opaque data count. */ | |
880 | count = ntohl(*p++); | |
881 | res->eof = ntohl(*p++); | |
882 | ocount = ntohl(*p++); | |
883 | ||
884 | if (ocount != count) { | |
fe82a183 | 885 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
1da177e4 LT |
886 | return -errno_NFSERR_IO; |
887 | } | |
888 | ||
889 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
890 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 891 | dprintk("NFS: READ reply header overflowed:" |
c957c526 | 892 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
893 | return -errno_NFSERR_IO; |
894 | } else if (iov->iov_len != hdrlen) { | |
895 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
896 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
897 | } | |
898 | ||
899 | recvd = req->rq_rcv_buf.len - hdrlen; | |
900 | if (count > recvd) { | |
fe82a183 | 901 | dprintk("NFS: server cheating in read reply: " |
c957c526 | 902 | "count %u > recvd %u\n", count, recvd); |
1da177e4 LT |
903 | count = recvd; |
904 | res->eof = 0; | |
905 | } | |
906 | ||
907 | if (count < res->count) | |
908 | res->count = count; | |
909 | ||
910 | return count; | |
911 | } | |
912 | ||
913 | /* | |
914 | * Decode WRITE response | |
915 | */ | |
916 | static int | |
d61005a6 | 917 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
918 | { |
919 | int status; | |
920 | ||
921 | status = ntohl(*p++); | |
922 | p = xdr_decode_wcc_data(p, res->fattr); | |
923 | ||
924 | if (status != 0) | |
925 | return -nfs_stat_to_errno(status); | |
926 | ||
927 | res->count = ntohl(*p++); | |
928 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
929 | res->verf->verifier[0] = *p++; | |
930 | res->verf->verifier[1] = *p++; | |
931 | ||
932 | return res->count; | |
933 | } | |
934 | ||
935 | /* | |
936 | * Decode a CREATE response | |
937 | */ | |
938 | static int | |
d61005a6 | 939 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
940 | { |
941 | int status; | |
942 | ||
943 | status = ntohl(*p++); | |
944 | if (status == 0) { | |
945 | if (*p++) { | |
946 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
947 | return -errno_NFSERR_IO; | |
948 | p = xdr_decode_post_op_attr(p, res->fattr); | |
949 | } else { | |
950 | memset(res->fh, 0, sizeof(*res->fh)); | |
951 | /* Do decode post_op_attr but set it to NULL */ | |
952 | p = xdr_decode_post_op_attr(p, res->fattr); | |
953 | res->fattr->valid = 0; | |
954 | } | |
955 | } else { | |
956 | status = -nfs_stat_to_errno(status); | |
957 | } | |
958 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
959 | return status; | |
960 | } | |
961 | ||
962 | /* | |
963 | * Decode RENAME reply | |
964 | */ | |
965 | static int | |
d61005a6 | 966 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
1da177e4 LT |
967 | { |
968 | int status; | |
969 | ||
970 | if ((status = ntohl(*p++)) != 0) | |
971 | status = -nfs_stat_to_errno(status); | |
972 | p = xdr_decode_wcc_data(p, res->fromattr); | |
973 | p = xdr_decode_wcc_data(p, res->toattr); | |
974 | return status; | |
975 | } | |
976 | ||
977 | /* | |
978 | * Decode LINK reply | |
979 | */ | |
980 | static int | |
d61005a6 | 981 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
982 | { |
983 | int status; | |
984 | ||
985 | if ((status = ntohl(*p++)) != 0) | |
986 | status = -nfs_stat_to_errno(status); | |
987 | p = xdr_decode_post_op_attr(p, res->fattr); | |
988 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
989 | return status; | |
990 | } | |
991 | ||
992 | /* | |
993 | * Decode FSSTAT reply | |
994 | */ | |
995 | static int | |
d61005a6 | 996 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
997 | { |
998 | int status; | |
999 | ||
1000 | status = ntohl(*p++); | |
1001 | ||
1002 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1003 | if (status != 0) | |
1004 | return -nfs_stat_to_errno(status); | |
1005 | ||
1006 | p = xdr_decode_hyper(p, &res->tbytes); | |
1007 | p = xdr_decode_hyper(p, &res->fbytes); | |
1008 | p = xdr_decode_hyper(p, &res->abytes); | |
1009 | p = xdr_decode_hyper(p, &res->tfiles); | |
1010 | p = xdr_decode_hyper(p, &res->ffiles); | |
1011 | p = xdr_decode_hyper(p, &res->afiles); | |
1012 | ||
1013 | /* ignore invarsec */ | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * Decode FSINFO reply | |
1019 | */ | |
1020 | static int | |
d61005a6 | 1021 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1022 | { |
1023 | int status; | |
1024 | ||
1025 | status = ntohl(*p++); | |
1026 | ||
1027 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1028 | if (status != 0) | |
1029 | return -nfs_stat_to_errno(status); | |
1030 | ||
1031 | res->rtmax = ntohl(*p++); | |
1032 | res->rtpref = ntohl(*p++); | |
1033 | res->rtmult = ntohl(*p++); | |
1034 | res->wtmax = ntohl(*p++); | |
1035 | res->wtpref = ntohl(*p++); | |
1036 | res->wtmult = ntohl(*p++); | |
1037 | res->dtpref = ntohl(*p++); | |
1038 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1039 | ||
1040 | /* ignore time_delta and properties */ | |
1041 | res->lease_time = 0; | |
1042 | return 0; | |
1043 | } | |
1044 | ||
1045 | /* | |
1046 | * Decode PATHCONF reply | |
1047 | */ | |
1048 | static int | |
d61005a6 | 1049 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1050 | { |
1051 | int status; | |
1052 | ||
1053 | status = ntohl(*p++); | |
1054 | ||
1055 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1056 | if (status != 0) | |
1057 | return -nfs_stat_to_errno(status); | |
1058 | res->max_link = ntohl(*p++); | |
1059 | res->max_namelen = ntohl(*p++); | |
1060 | ||
1061 | /* ignore remaining fields */ | |
1062 | return 0; | |
1063 | } | |
1064 | ||
1065 | /* | |
1066 | * Decode COMMIT reply | |
1067 | */ | |
1068 | static int | |
d61005a6 | 1069 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1070 | { |
1071 | int status; | |
1072 | ||
1073 | status = ntohl(*p++); | |
1074 | p = xdr_decode_wcc_data(p, res->fattr); | |
1075 | if (status != 0) | |
1076 | return -nfs_stat_to_errno(status); | |
1077 | ||
1078 | res->verf->verifier[0] = *p++; | |
1079 | res->verf->verifier[1] = *p++; | |
1080 | return 0; | |
1081 | } | |
1082 | ||
b7fa0554 AG |
1083 | #ifdef CONFIG_NFS_V3_ACL |
1084 | /* | |
1085 | * Decode GETACL reply | |
1086 | */ | |
1087 | static int | |
d61005a6 | 1088 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1089 | struct nfs3_getaclres *res) |
1090 | { | |
1091 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1092 | int status = ntohl(*p++); | |
1093 | struct posix_acl **acl; | |
1094 | unsigned int *aclcnt; | |
1095 | int err, base; | |
1096 | ||
1097 | if (status != 0) | |
1098 | return -nfs_stat_to_errno(status); | |
1099 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1100 | res->mask = ntohl(*p++); | |
1101 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1102 | return -EINVAL; | |
1103 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1104 | ||
1105 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1106 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1107 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1108 | ||
1109 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1110 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1111 | if (err > 0) | |
1112 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1113 | return (err > 0) ? 0 : err; | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * Decode setacl reply. | |
1118 | */ | |
1119 | static int | |
d61005a6 | 1120 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1121 | { |
1122 | int status = ntohl(*p++); | |
1123 | ||
1124 | if (status) | |
1125 | return -nfs_stat_to_errno(status); | |
1126 | xdr_decode_post_op_attr(p, fattr); | |
1127 | return 0; | |
1128 | } | |
1129 | #endif /* CONFIG_NFS_V3_ACL */ | |
1130 | ||
1da177e4 LT |
1131 | #define PROC(proc, argtype, restype, timer) \ |
1132 | [NFS3PROC_##proc] = { \ | |
1133 | .p_proc = NFS3PROC_##proc, \ | |
1134 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1135 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
2bea90d4 CL |
1136 | .p_arglen = NFS3_##argtype##_sz, \ |
1137 | .p_replen = NFS3_##restype##_sz, \ | |
cc0175c1 CL |
1138 | .p_timer = timer, \ |
1139 | .p_statidx = NFS3PROC_##proc, \ | |
1140 | .p_name = #proc, \ | |
1da177e4 LT |
1141 | } |
1142 | ||
1143 | struct rpc_procinfo nfs3_procedures[] = { | |
1144 | PROC(GETATTR, fhandle, attrstat, 1), | |
1145 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1146 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1147 | PROC(ACCESS, accessargs, accessres, 1), | |
1148 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1149 | PROC(READ, readargs, readres, 3), | |
1150 | PROC(WRITE, writeargs, writeres, 4), | |
1151 | PROC(CREATE, createargs, createres, 0), | |
1152 | PROC(MKDIR, mkdirargs, createres, 0), | |
1153 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1154 | PROC(MKNOD, mknodargs, createres, 0), | |
4fdc17b2 | 1155 | PROC(REMOVE, removeargs, removeres, 0), |
1da177e4 LT |
1156 | PROC(RMDIR, diropargs, wccstat, 0), |
1157 | PROC(RENAME, renameargs, renameres, 0), | |
1158 | PROC(LINK, linkargs, linkres, 0), | |
1159 | PROC(READDIR, readdirargs, readdirres, 3), | |
1160 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1161 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1162 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1163 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1164 | PROC(COMMIT, commitargs, commitres, 5), | |
1165 | }; | |
1166 | ||
1167 | struct rpc_version nfs_version3 = { | |
1168 | .number = 3, | |
e8c96f8c | 1169 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1170 | .procs = nfs3_procedures |
1171 | }; | |
1172 | ||
b7fa0554 AG |
1173 | #ifdef CONFIG_NFS_V3_ACL |
1174 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1175 | [ACLPROC3_GETACL] = { | |
1176 | .p_proc = ACLPROC3_GETACL, | |
1177 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1178 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
2bea90d4 CL |
1179 | .p_arglen = ACL3_getaclargs_sz, |
1180 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 1181 | .p_timer = 1, |
cc0175c1 | 1182 | .p_name = "GETACL", |
b7fa0554 AG |
1183 | }, |
1184 | [ACLPROC3_SETACL] = { | |
1185 | .p_proc = ACLPROC3_SETACL, | |
1186 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1187 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
2bea90d4 CL |
1188 | .p_arglen = ACL3_setaclargs_sz, |
1189 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 1190 | .p_timer = 0, |
cc0175c1 | 1191 | .p_name = "SETACL", |
b7fa0554 AG |
1192 | }, |
1193 | }; | |
1194 | ||
1195 | struct rpc_version nfsacl_version3 = { | |
1196 | .number = 3, | |
1197 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1198 | sizeof(nfs3_acl_procedures[0]), | |
1199 | .procs = nfs3_acl_procedures, | |
1200 | }; | |
1201 | #endif /* CONFIG_NFS_V3_ACL */ |