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 | 84 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
ae46141f TM |
85 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
86 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
87 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ | |
88 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
b7fa0554 AG |
89 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
90 | ||
1da177e4 LT |
91 | /* |
92 | * Map file type to S_IFMT bits | |
93 | */ | |
94 | static struct { | |
95 | unsigned int mode; | |
96 | unsigned int nfs2type; | |
97 | } nfs_type2fmt[] = { | |
98 | { 0, NFNON }, | |
99 | { S_IFREG, NFREG }, | |
100 | { S_IFDIR, NFDIR }, | |
101 | { S_IFBLK, NFBLK }, | |
102 | { S_IFCHR, NFCHR }, | |
103 | { S_IFLNK, NFLNK }, | |
104 | { S_IFSOCK, NFSOCK }, | |
105 | { S_IFIFO, NFFIFO }, | |
106 | { 0, NFBAD } | |
107 | }; | |
108 | ||
109 | /* | |
110 | * Common NFS XDR functions as inlines | |
111 | */ | |
d61005a6 | 112 | static inline __be32 * |
4fdc17b2 | 113 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
1da177e4 LT |
114 | { |
115 | return xdr_encode_array(p, fh->data, fh->size); | |
116 | } | |
117 | ||
d61005a6 AV |
118 | static inline __be32 * |
119 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) | |
1da177e4 LT |
120 | { |
121 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
122 | memcpy(fh->data, p, fh->size); | |
123 | return p + XDR_QUADLEN(fh->size); | |
124 | } | |
125 | return NULL; | |
126 | } | |
127 | ||
128 | /* | |
129 | * Encode/decode time. | |
130 | */ | |
d61005a6 AV |
131 | static inline __be32 * |
132 | xdr_encode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
133 | { |
134 | *p++ = htonl(timep->tv_sec); | |
135 | *p++ = htonl(timep->tv_nsec); | |
136 | return p; | |
137 | } | |
138 | ||
d61005a6 AV |
139 | static inline __be32 * |
140 | xdr_decode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
141 | { |
142 | timep->tv_sec = ntohl(*p++); | |
143 | timep->tv_nsec = ntohl(*p++); | |
144 | return p; | |
145 | } | |
146 | ||
d61005a6 AV |
147 | static __be32 * |
148 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
149 | { |
150 | unsigned int type, major, minor; | |
151 | int fmode; | |
152 | ||
153 | type = ntohl(*p++); | |
154 | if (type >= NF3BAD) | |
155 | type = NF3BAD; | |
156 | fmode = nfs_type2fmt[type].mode; | |
157 | fattr->type = nfs_type2fmt[type].nfs2type; | |
158 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; | |
159 | fattr->nlink = ntohl(*p++); | |
160 | fattr->uid = ntohl(*p++); | |
161 | fattr->gid = ntohl(*p++); | |
162 | p = xdr_decode_hyper(p, &fattr->size); | |
163 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
164 | ||
165 | /* Turn remote device info into Linux-specific dev_t */ | |
166 | major = ntohl(*p++); | |
167 | minor = ntohl(*p++); | |
168 | fattr->rdev = MKDEV(major, minor); | |
169 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
170 | fattr->rdev = 0; | |
171 | ||
8b4bdcf8 TM |
172 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
173 | fattr->fsid.minor = 0; | |
1da177e4 LT |
174 | p = xdr_decode_hyper(p, &fattr->fileid); |
175 | p = xdr_decode_time3(p, &fattr->atime); | |
176 | p = xdr_decode_time3(p, &fattr->mtime); | |
177 | p = xdr_decode_time3(p, &fattr->ctime); | |
178 | ||
179 | /* Update the mode bits */ | |
9e6e70f8 | 180 | fattr->valid |= NFS_ATTR_FATTR_V3; |
1da177e4 LT |
181 | return p; |
182 | } | |
183 | ||
d61005a6 AV |
184 | static inline __be32 * |
185 | xdr_encode_sattr(__be32 *p, struct iattr *attr) | |
1da177e4 LT |
186 | { |
187 | if (attr->ia_valid & ATTR_MODE) { | |
188 | *p++ = xdr_one; | |
cf3fff54 | 189 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
190 | } else { |
191 | *p++ = xdr_zero; | |
192 | } | |
193 | if (attr->ia_valid & ATTR_UID) { | |
194 | *p++ = xdr_one; | |
195 | *p++ = htonl(attr->ia_uid); | |
196 | } else { | |
197 | *p++ = xdr_zero; | |
198 | } | |
199 | if (attr->ia_valid & ATTR_GID) { | |
200 | *p++ = xdr_one; | |
201 | *p++ = htonl(attr->ia_gid); | |
202 | } else { | |
203 | *p++ = xdr_zero; | |
204 | } | |
205 | if (attr->ia_valid & ATTR_SIZE) { | |
206 | *p++ = xdr_one; | |
207 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
208 | } else { | |
209 | *p++ = xdr_zero; | |
210 | } | |
211 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
212 | *p++ = xdr_two; | |
213 | p = xdr_encode_time3(p, &attr->ia_atime); | |
214 | } else if (attr->ia_valid & ATTR_ATIME) { | |
215 | *p++ = xdr_one; | |
216 | } else { | |
217 | *p++ = xdr_zero; | |
218 | } | |
219 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
220 | *p++ = xdr_two; | |
221 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
222 | } else if (attr->ia_valid & ATTR_MTIME) { | |
223 | *p++ = xdr_one; | |
224 | } else { | |
225 | *p++ = xdr_zero; | |
226 | } | |
227 | return p; | |
228 | } | |
229 | ||
d61005a6 AV |
230 | static inline __be32 * |
231 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
232 | { |
233 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
234 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
235 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
9e6e70f8 TM |
236 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
237 | | NFS_ATTR_FATTR_PREMTIME | |
238 | | NFS_ATTR_FATTR_PRECTIME; | |
1da177e4 LT |
239 | return p; |
240 | } | |
241 | ||
d61005a6 AV |
242 | static inline __be32 * |
243 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
244 | { |
245 | if (*p++) | |
246 | p = xdr_decode_fattr(p, fattr); | |
247 | return p; | |
248 | } | |
249 | ||
d61005a6 AV |
250 | static inline __be32 * |
251 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
252 | { |
253 | if (*p++) | |
254 | return xdr_decode_wcc_attr(p, fattr); | |
255 | return p; | |
256 | } | |
257 | ||
258 | ||
d61005a6 AV |
259 | static inline __be32 * |
260 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
261 | { |
262 | p = xdr_decode_pre_op_attr(p, fattr); | |
263 | return xdr_decode_post_op_attr(p, fattr); | |
264 | } | |
265 | ||
266 | /* | |
267 | * NFS encode functions | |
268 | */ | |
269 | ||
270 | /* | |
271 | * Encode file handle argument | |
272 | */ | |
273 | static int | |
d61005a6 | 274 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
1da177e4 LT |
275 | { |
276 | p = xdr_encode_fhandle(p, fh); | |
277 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | /* | |
282 | * Encode SETATTR arguments | |
283 | */ | |
284 | static int | |
d61005a6 | 285 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
1da177e4 LT |
286 | { |
287 | p = xdr_encode_fhandle(p, args->fh); | |
288 | p = xdr_encode_sattr(p, args->sattr); | |
289 | *p++ = htonl(args->guard); | |
290 | if (args->guard) | |
291 | p = xdr_encode_time3(p, &args->guardtime); | |
292 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
293 | return 0; | |
294 | } | |
295 | ||
296 | /* | |
297 | * Encode directory ops argument | |
298 | */ | |
299 | static int | |
d61005a6 | 300 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
1da177e4 LT |
301 | { |
302 | p = xdr_encode_fhandle(p, args->fh); | |
303 | p = xdr_encode_array(p, args->name, args->len); | |
304 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
305 | return 0; | |
306 | } | |
307 | ||
4fdc17b2 TM |
308 | /* |
309 | * Encode REMOVE argument | |
310 | */ | |
311 | static int | |
312 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) | |
313 | { | |
314 | p = xdr_encode_fhandle(p, args->fh); | |
315 | p = xdr_encode_array(p, args->name.name, args->name.len); | |
316 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
317 | return 0; | |
318 | } | |
319 | ||
1da177e4 LT |
320 | /* |
321 | * Encode access() argument | |
322 | */ | |
323 | static int | |
d61005a6 | 324 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
1da177e4 LT |
325 | { |
326 | p = xdr_encode_fhandle(p, args->fh); | |
327 | *p++ = htonl(args->access); | |
328 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | /* | |
333 | * Arguments to a READ call. Since we read data directly into the page | |
334 | * cache, we also set up the reply iovec here so that iov[1] points | |
335 | * exactly to the page we want to fetch. | |
336 | */ | |
337 | static int | |
d61005a6 | 338 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
1da177e4 | 339 | { |
1be27f36 | 340 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
341 | unsigned int replen; |
342 | u32 count = args->count; | |
343 | ||
344 | p = xdr_encode_fhandle(p, args->fh); | |
345 | p = xdr_encode_hyper(p, args->offset); | |
346 | *p++ = htonl(count); | |
347 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
348 | ||
349 | /* Inline the page array */ | |
350 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
351 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
352 | args->pages, args->pgbase, count); | |
4f22ccc3 | 353 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
1da177e4 LT |
354 | return 0; |
355 | } | |
356 | ||
357 | /* | |
358 | * Write arguments. Splice the buffer to be written into the iovec. | |
359 | */ | |
360 | static int | |
d61005a6 | 361 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
362 | { |
363 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
364 | u32 count = args->count; | |
365 | ||
366 | p = xdr_encode_fhandle(p, args->fh); | |
367 | p = xdr_encode_hyper(p, args->offset); | |
368 | *p++ = htonl(count); | |
369 | *p++ = htonl(args->stable); | |
370 | *p++ = htonl(count); | |
371 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
372 | ||
373 | /* Copy the page array */ | |
374 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
4f22ccc3 | 375 | sndbuf->flags |= XDRBUF_WRITE; |
1da177e4 LT |
376 | return 0; |
377 | } | |
378 | ||
379 | /* | |
380 | * Encode CREATE arguments | |
381 | */ | |
382 | static int | |
d61005a6 | 383 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
384 | { |
385 | p = xdr_encode_fhandle(p, args->fh); | |
386 | p = xdr_encode_array(p, args->name, args->len); | |
387 | ||
388 | *p++ = htonl(args->createmode); | |
389 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
390 | *p++ = args->verifier[0]; | |
391 | *p++ = args->verifier[1]; | |
392 | } else | |
393 | p = xdr_encode_sattr(p, args->sattr); | |
394 | ||
395 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
396 | return 0; | |
397 | } | |
398 | ||
399 | /* | |
400 | * Encode MKDIR arguments | |
401 | */ | |
402 | static int | |
d61005a6 | 403 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
404 | { |
405 | p = xdr_encode_fhandle(p, args->fh); | |
406 | p = xdr_encode_array(p, args->name, args->len); | |
407 | p = xdr_encode_sattr(p, args->sattr); | |
408 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
409 | return 0; | |
410 | } | |
411 | ||
412 | /* | |
413 | * Encode SYMLINK arguments | |
414 | */ | |
415 | static int | |
d61005a6 | 416 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
417 | { |
418 | p = xdr_encode_fhandle(p, args->fromfh); | |
419 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
420 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 421 | *p++ = htonl(args->pathlen); |
1da177e4 | 422 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
423 | |
424 | /* Copy the page */ | |
425 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
426 | return 0; |
427 | } | |
428 | ||
429 | /* | |
430 | * Encode MKNOD arguments | |
431 | */ | |
432 | static int | |
d61005a6 | 433 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
434 | { |
435 | p = xdr_encode_fhandle(p, args->fh); | |
436 | p = xdr_encode_array(p, args->name, args->len); | |
437 | *p++ = htonl(args->type); | |
438 | p = xdr_encode_sattr(p, args->sattr); | |
439 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
440 | *p++ = htonl(MAJOR(args->rdev)); | |
441 | *p++ = htonl(MINOR(args->rdev)); | |
442 | } | |
443 | ||
444 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
445 | return 0; | |
446 | } | |
447 | ||
448 | /* | |
449 | * Encode RENAME arguments | |
450 | */ | |
451 | static int | |
d61005a6 | 452 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
1da177e4 LT |
453 | { |
454 | p = xdr_encode_fhandle(p, args->fromfh); | |
455 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
456 | p = xdr_encode_fhandle(p, args->tofh); | |
457 | p = xdr_encode_array(p, args->toname, args->tolen); | |
458 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | /* | |
463 | * Encode LINK arguments | |
464 | */ | |
465 | static int | |
d61005a6 | 466 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
467 | { |
468 | p = xdr_encode_fhandle(p, args->fromfh); | |
469 | p = xdr_encode_fhandle(p, args->tofh); | |
470 | p = xdr_encode_array(p, args->toname, args->tolen); | |
471 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Encode arguments to readdir call | |
477 | */ | |
478 | static int | |
d61005a6 | 479 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 480 | { |
1be27f36 | 481 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
482 | unsigned int replen; |
483 | u32 count = args->count; | |
484 | ||
485 | p = xdr_encode_fhandle(p, args->fh); | |
486 | p = xdr_encode_hyper(p, args->cookie); | |
487 | *p++ = args->verf[0]; | |
488 | *p++ = args->verf[1]; | |
489 | if (args->plus) { | |
490 | /* readdirplus: need dircount + buffer size. | |
491 | * We just make sure we make dircount big enough */ | |
492 | *p++ = htonl(count >> 3); | |
493 | } | |
494 | *p++ = htonl(count); | |
495 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
496 | ||
497 | /* Inline the page array */ | |
498 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
499 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
500 | return 0; | |
501 | } | |
502 | ||
503 | /* | |
504 | * Decode the result of a readdir call. | |
505 | * We just check for syntactical correctness. | |
506 | */ | |
507 | static int | |
d61005a6 | 508 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
509 | { |
510 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
511 | struct kvec *iov = rcvbuf->head; | |
512 | struct page **page; | |
c957c526 CL |
513 | size_t hdrlen; |
514 | u32 len, recvd, pglen; | |
643f8111 | 515 | int status, nr = 0; |
d61005a6 | 516 | __be32 *entry, *end, *kaddr; |
1da177e4 LT |
517 | |
518 | status = ntohl(*p++); | |
519 | /* Decode post_op_attrs */ | |
520 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
521 | if (status) | |
856dff3d | 522 | return nfs_stat_to_errno(status); |
1da177e4 LT |
523 | /* Decode verifier cookie */ |
524 | if (res->verf) { | |
525 | res->verf[0] = *p++; | |
526 | res->verf[1] = *p++; | |
527 | } else { | |
528 | p += 2; | |
529 | } | |
530 | ||
531 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
532 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 533 | dprintk("NFS: READDIR reply header overflowed:" |
c957c526 | 534 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
535 | return -errno_NFSERR_IO; |
536 | } else if (iov->iov_len != hdrlen) { | |
537 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
538 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
539 | } | |
540 | ||
541 | pglen = rcvbuf->page_len; | |
542 | recvd = rcvbuf->len - hdrlen; | |
543 | if (pglen > recvd) | |
544 | pglen = recvd; | |
545 | page = rcvbuf->pages; | |
d61005a6 AV |
546 | kaddr = p = kmap_atomic(*page, KM_USER0); |
547 | end = (__be32 *)((char *)p + pglen); | |
1da177e4 | 548 | entry = p; |
643f8111 JL |
549 | |
550 | /* Make sure the packet actually has a value_follows and EOF entry */ | |
551 | if ((entry + 1) > end) | |
552 | goto short_pkt; | |
553 | ||
554 | for (; *p++; nr++) { | |
1da177e4 LT |
555 | if (p + 3 > end) |
556 | goto short_pkt; | |
557 | p += 2; /* inode # */ | |
558 | len = ntohl(*p++); /* string length */ | |
559 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
560 | if (len > NFS3_MAXNAMLEN) { | |
c957c526 | 561 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
1da177e4 LT |
562 | len); |
563 | goto err_unmap; | |
564 | } | |
565 | ||
566 | if (res->plus) { | |
567 | /* post_op_attr */ | |
568 | if (p + 2 > end) | |
569 | goto short_pkt; | |
570 | if (*p++) { | |
571 | p += 21; | |
572 | if (p + 1 > end) | |
573 | goto short_pkt; | |
574 | } | |
575 | /* post_op_fh3 */ | |
576 | if (*p++) { | |
577 | if (p + 1 > end) | |
578 | goto short_pkt; | |
579 | len = ntohl(*p++); | |
580 | if (len > NFS3_FHSIZE) { | |
fe82a183 | 581 | dprintk("NFS: giant filehandle in " |
c957c526 | 582 | "readdir (len 0x%x)!\n", len); |
1da177e4 LT |
583 | goto err_unmap; |
584 | } | |
585 | p += XDR_QUADLEN(len); | |
586 | } | |
587 | } | |
588 | ||
589 | if (p + 2 > end) | |
590 | goto short_pkt; | |
591 | entry = p; | |
592 | } | |
643f8111 JL |
593 | |
594 | /* | |
595 | * Apparently some server sends responses that are a valid size, but | |
596 | * contain no entries, and have value_follows==0 and EOF==0. For | |
597 | * those, just set the EOF marker. | |
598 | */ | |
599 | if (!nr && entry[1] == 0) { | |
600 | dprintk("NFS: readdir reply truncated!\n"); | |
601 | entry[1] = 1; | |
602 | } | |
1da177e4 LT |
603 | out: |
604 | kunmap_atomic(kaddr, KM_USER0); | |
605 | return nr; | |
606 | short_pkt: | |
643f8111 JL |
607 | /* |
608 | * When we get a short packet there are 2 possibilities. We can | |
609 | * return an error, or fix up the response to look like a valid | |
610 | * response and return what we have so far. If there are no | |
611 | * entries and the packet was short, then return -EIO. If there | |
612 | * are valid entries in the response, return them and pretend that | |
613 | * the call was successful, but incomplete. The caller can retry the | |
614 | * readdir starting at the last cookie. | |
615 | */ | |
1da177e4 | 616 | entry[0] = entry[1] = 0; |
643f8111 JL |
617 | if (!nr) |
618 | nr = -errno_NFSERR_IO; | |
1da177e4 LT |
619 | goto out; |
620 | err_unmap: | |
621 | nr = -errno_NFSERR_IO; | |
622 | goto out; | |
623 | } | |
624 | ||
0dbb4c67 AV |
625 | __be32 * |
626 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) | |
1da177e4 LT |
627 | { |
628 | struct nfs_entry old = *entry; | |
629 | ||
630 | if (!*p++) { | |
631 | if (!*p) | |
632 | return ERR_PTR(-EAGAIN); | |
633 | entry->eof = 1; | |
634 | return ERR_PTR(-EBADCOOKIE); | |
635 | } | |
636 | ||
637 | p = xdr_decode_hyper(p, &entry->ino); | |
638 | entry->len = ntohl(*p++); | |
639 | entry->name = (const char *) p; | |
640 | p += XDR_QUADLEN(entry->len); | |
641 | entry->prev_cookie = entry->cookie; | |
642 | p = xdr_decode_hyper(p, &entry->cookie); | |
643 | ||
644 | if (plus) { | |
645 | entry->fattr->valid = 0; | |
646 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
647 | /* In fact, a post_op_fh3: */ | |
648 | if (*p++) { | |
649 | p = xdr_decode_fhandle(p, entry->fh); | |
650 | /* Ugh -- server reply was truncated */ | |
651 | if (p == NULL) { | |
652 | dprintk("NFS: FH truncated\n"); | |
653 | *entry = old; | |
654 | return ERR_PTR(-EAGAIN); | |
655 | } | |
656 | } else | |
657 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
658 | } | |
659 | ||
660 | entry->eof = !p[0] && p[1]; | |
661 | return p; | |
662 | } | |
663 | ||
664 | /* | |
665 | * Encode COMMIT arguments | |
666 | */ | |
667 | static int | |
d61005a6 | 668 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
669 | { |
670 | p = xdr_encode_fhandle(p, args->fh); | |
671 | p = xdr_encode_hyper(p, args->offset); | |
672 | *p++ = htonl(args->count); | |
673 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
674 | return 0; | |
675 | } | |
676 | ||
b7fa0554 AG |
677 | #ifdef CONFIG_NFS_V3_ACL |
678 | /* | |
679 | * Encode GETACL arguments | |
680 | */ | |
681 | static int | |
d61005a6 | 682 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
683 | struct nfs3_getaclargs *args) |
684 | { | |
1be27f36 | 685 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
b7fa0554 AG |
686 | unsigned int replen; |
687 | ||
688 | p = xdr_encode_fhandle(p, args->fh); | |
689 | *p++ = htonl(args->mask); | |
690 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
691 | ||
692 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
693 | /* Inline the page array */ | |
694 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
695 | ACL3_getaclres_sz) << 2; | |
696 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
697 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
698 | } | |
699 | return 0; | |
700 | } | |
701 | ||
702 | /* | |
703 | * Encode SETACL arguments | |
704 | */ | |
705 | static int | |
d61005a6 | 706 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
707 | struct nfs3_setaclargs *args) |
708 | { | |
709 | struct xdr_buf *buf = &req->rq_snd_buf; | |
ae46141f TM |
710 | unsigned int base; |
711 | int err; | |
b7fa0554 AG |
712 | |
713 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
714 | *p++ = htonl(args->mask); | |
ae46141f TM |
715 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
716 | base = req->rq_slen; | |
717 | ||
718 | if (args->npages != 0) | |
719 | xdr_encode_pages(buf, args->pages, 0, args->len); | |
720 | else | |
721 | req->rq_slen += args->len; | |
b7fa0554 AG |
722 | |
723 | err = nfsacl_encode(buf, base, args->inode, | |
724 | (args->mask & NFS_ACL) ? | |
725 | args->acl_access : NULL, 1, 0); | |
726 | if (err > 0) | |
727 | err = nfsacl_encode(buf, base + err, args->inode, | |
728 | (args->mask & NFS_DFACL) ? | |
729 | args->acl_default : NULL, 1, | |
730 | NFS_ACL_DEFAULT); | |
731 | return (err > 0) ? 0 : err; | |
732 | } | |
733 | #endif /* CONFIG_NFS_V3_ACL */ | |
734 | ||
1da177e4 LT |
735 | /* |
736 | * NFS XDR decode functions | |
737 | */ | |
738 | ||
739 | /* | |
740 | * Decode attrstat reply. | |
741 | */ | |
742 | static int | |
d61005a6 | 743 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
744 | { |
745 | int status; | |
746 | ||
747 | if ((status = ntohl(*p++))) | |
856dff3d | 748 | return nfs_stat_to_errno(status); |
1da177e4 LT |
749 | xdr_decode_fattr(p, fattr); |
750 | return 0; | |
751 | } | |
752 | ||
753 | /* | |
754 | * Decode status+wcc_data reply | |
755 | * SATTR, REMOVE, RMDIR | |
756 | */ | |
757 | static int | |
d61005a6 | 758 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
759 | { |
760 | int status; | |
761 | ||
762 | if ((status = ntohl(*p++))) | |
856dff3d | 763 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
764 | xdr_decode_wcc_data(p, fattr); |
765 | return status; | |
766 | } | |
767 | ||
4fdc17b2 TM |
768 | static int |
769 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
770 | { | |
771 | return nfs3_xdr_wccstat(req, p, &res->dir_attr); | |
772 | } | |
773 | ||
1da177e4 LT |
774 | /* |
775 | * Decode LOOKUP reply | |
776 | */ | |
777 | static int | |
d61005a6 | 778 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
779 | { |
780 | int status; | |
781 | ||
782 | if ((status = ntohl(*p++))) { | |
856dff3d | 783 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
784 | } else { |
785 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
786 | return -errno_NFSERR_IO; | |
787 | p = xdr_decode_post_op_attr(p, res->fattr); | |
788 | } | |
789 | xdr_decode_post_op_attr(p, res->dir_attr); | |
790 | return status; | |
791 | } | |
792 | ||
793 | /* | |
794 | * Decode ACCESS reply | |
795 | */ | |
796 | static int | |
d61005a6 | 797 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
798 | { |
799 | int status = ntohl(*p++); | |
800 | ||
801 | p = xdr_decode_post_op_attr(p, res->fattr); | |
802 | if (status) | |
856dff3d | 803 | return nfs_stat_to_errno(status); |
1da177e4 LT |
804 | res->access = ntohl(*p++); |
805 | return 0; | |
806 | } | |
807 | ||
808 | static int | |
d61005a6 | 809 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 810 | { |
1be27f36 | 811 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
812 | unsigned int replen; |
813 | ||
814 | p = xdr_encode_fhandle(p, args->fh); | |
815 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
816 | ||
817 | /* Inline the page array */ | |
818 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
819 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
820 | return 0; | |
821 | } | |
822 | ||
823 | /* | |
824 | * Decode READLINK reply | |
825 | */ | |
826 | static int | |
d61005a6 | 827 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
828 | { |
829 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
830 | struct kvec *iov = rcvbuf->head; | |
c957c526 CL |
831 | size_t hdrlen; |
832 | u32 len, recvd; | |
1da177e4 LT |
833 | char *kaddr; |
834 | int status; | |
835 | ||
836 | status = ntohl(*p++); | |
837 | p = xdr_decode_post_op_attr(p, fattr); | |
838 | ||
839 | if (status != 0) | |
856dff3d | 840 | return nfs_stat_to_errno(status); |
1da177e4 LT |
841 | |
842 | /* Convert length of symlink */ | |
843 | len = ntohl(*p++); | |
c957c526 | 844 | if (len >= rcvbuf->page_len) { |
fe82a183 | 845 | dprintk("nfs: server returned giant symlink!\n"); |
1da177e4 LT |
846 | return -ENAMETOOLONG; |
847 | } | |
848 | ||
849 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
850 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 851 | dprintk("NFS: READLINK reply header overflowed:" |
c957c526 | 852 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
853 | return -errno_NFSERR_IO; |
854 | } else if (iov->iov_len != hdrlen) { | |
fe82a183 CL |
855 | dprintk("NFS: READLINK header is short. " |
856 | "iovec will be shifted.\n"); | |
1da177e4 LT |
857 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
858 | } | |
859 | recvd = req->rq_rcv_buf.len - hdrlen; | |
860 | if (recvd < len) { | |
fe82a183 | 861 | dprintk("NFS: server cheating in readlink reply: " |
1da177e4 LT |
862 | "count %u > recvd %u\n", len, recvd); |
863 | return -EIO; | |
864 | } | |
865 | ||
866 | /* NULL terminate the string we got */ | |
867 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
868 | kaddr[len+rcvbuf->page_base] = '\0'; | |
869 | kunmap_atomic(kaddr, KM_USER0); | |
870 | return 0; | |
871 | } | |
872 | ||
873 | /* | |
874 | * Decode READ reply | |
875 | */ | |
876 | static int | |
d61005a6 | 877 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
878 | { |
879 | struct kvec *iov = req->rq_rcv_buf.head; | |
c957c526 CL |
880 | size_t hdrlen; |
881 | u32 count, ocount, recvd; | |
882 | int status; | |
1da177e4 LT |
883 | |
884 | status = ntohl(*p++); | |
885 | p = xdr_decode_post_op_attr(p, res->fattr); | |
886 | ||
887 | if (status != 0) | |
856dff3d | 888 | return nfs_stat_to_errno(status); |
1da177e4 | 889 | |
c957c526 | 890 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
1da177e4 LT |
891 | * in that it puts the count both in the res struct and in the |
892 | * opaque data count. */ | |
893 | count = ntohl(*p++); | |
894 | res->eof = ntohl(*p++); | |
895 | ocount = ntohl(*p++); | |
896 | ||
897 | if (ocount != count) { | |
fe82a183 | 898 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
1da177e4 LT |
899 | return -errno_NFSERR_IO; |
900 | } | |
901 | ||
902 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
903 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 904 | dprintk("NFS: READ reply header overflowed:" |
c957c526 | 905 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
906 | return -errno_NFSERR_IO; |
907 | } else if (iov->iov_len != hdrlen) { | |
908 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
909 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
910 | } | |
911 | ||
912 | recvd = req->rq_rcv_buf.len - hdrlen; | |
913 | if (count > recvd) { | |
fe82a183 | 914 | dprintk("NFS: server cheating in read reply: " |
c957c526 | 915 | "count %u > recvd %u\n", count, recvd); |
1da177e4 LT |
916 | count = recvd; |
917 | res->eof = 0; | |
918 | } | |
919 | ||
920 | if (count < res->count) | |
921 | res->count = count; | |
922 | ||
923 | return count; | |
924 | } | |
925 | ||
926 | /* | |
927 | * Decode WRITE response | |
928 | */ | |
929 | static int | |
d61005a6 | 930 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
931 | { |
932 | int status; | |
933 | ||
934 | status = ntohl(*p++); | |
935 | p = xdr_decode_wcc_data(p, res->fattr); | |
936 | ||
937 | if (status != 0) | |
856dff3d | 938 | return nfs_stat_to_errno(status); |
1da177e4 LT |
939 | |
940 | res->count = ntohl(*p++); | |
941 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
942 | res->verf->verifier[0] = *p++; | |
943 | res->verf->verifier[1] = *p++; | |
944 | ||
945 | return res->count; | |
946 | } | |
947 | ||
948 | /* | |
949 | * Decode a CREATE response | |
950 | */ | |
951 | static int | |
d61005a6 | 952 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
953 | { |
954 | int status; | |
955 | ||
956 | status = ntohl(*p++); | |
957 | if (status == 0) { | |
958 | if (*p++) { | |
959 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
960 | return -errno_NFSERR_IO; | |
961 | p = xdr_decode_post_op_attr(p, res->fattr); | |
962 | } else { | |
963 | memset(res->fh, 0, sizeof(*res->fh)); | |
964 | /* Do decode post_op_attr but set it to NULL */ | |
965 | p = xdr_decode_post_op_attr(p, res->fattr); | |
966 | res->fattr->valid = 0; | |
967 | } | |
968 | } else { | |
856dff3d | 969 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
970 | } |
971 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
972 | return status; | |
973 | } | |
974 | ||
975 | /* | |
976 | * Decode RENAME reply | |
977 | */ | |
978 | static int | |
d61005a6 | 979 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
1da177e4 LT |
980 | { |
981 | int status; | |
982 | ||
983 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 984 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
985 | p = xdr_decode_wcc_data(p, res->fromattr); |
986 | p = xdr_decode_wcc_data(p, res->toattr); | |
987 | return status; | |
988 | } | |
989 | ||
990 | /* | |
991 | * Decode LINK reply | |
992 | */ | |
993 | static int | |
d61005a6 | 994 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
995 | { |
996 | int status; | |
997 | ||
998 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 999 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
1000 | p = xdr_decode_post_op_attr(p, res->fattr); |
1001 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
1002 | return status; | |
1003 | } | |
1004 | ||
1005 | /* | |
1006 | * Decode FSSTAT reply | |
1007 | */ | |
1008 | static int | |
d61005a6 | 1009 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
1010 | { |
1011 | int status; | |
1012 | ||
1013 | status = ntohl(*p++); | |
1014 | ||
1015 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1016 | if (status != 0) | |
856dff3d | 1017 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1018 | |
1019 | p = xdr_decode_hyper(p, &res->tbytes); | |
1020 | p = xdr_decode_hyper(p, &res->fbytes); | |
1021 | p = xdr_decode_hyper(p, &res->abytes); | |
1022 | p = xdr_decode_hyper(p, &res->tfiles); | |
1023 | p = xdr_decode_hyper(p, &res->ffiles); | |
1024 | p = xdr_decode_hyper(p, &res->afiles); | |
1025 | ||
1026 | /* ignore invarsec */ | |
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /* | |
1031 | * Decode FSINFO reply | |
1032 | */ | |
1033 | static int | |
d61005a6 | 1034 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1035 | { |
1036 | int status; | |
1037 | ||
1038 | status = ntohl(*p++); | |
1039 | ||
1040 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1041 | if (status != 0) | |
856dff3d | 1042 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1043 | |
1044 | res->rtmax = ntohl(*p++); | |
1045 | res->rtpref = ntohl(*p++); | |
1046 | res->rtmult = ntohl(*p++); | |
1047 | res->wtmax = ntohl(*p++); | |
1048 | res->wtpref = ntohl(*p++); | |
1049 | res->wtmult = ntohl(*p++); | |
1050 | res->dtpref = ntohl(*p++); | |
1051 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1052 | ||
1053 | /* ignore time_delta and properties */ | |
1054 | res->lease_time = 0; | |
1055 | return 0; | |
1056 | } | |
1057 | ||
1058 | /* | |
1059 | * Decode PATHCONF reply | |
1060 | */ | |
1061 | static int | |
d61005a6 | 1062 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1063 | { |
1064 | int status; | |
1065 | ||
1066 | status = ntohl(*p++); | |
1067 | ||
1068 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1069 | if (status != 0) | |
856dff3d | 1070 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1071 | res->max_link = ntohl(*p++); |
1072 | res->max_namelen = ntohl(*p++); | |
1073 | ||
1074 | /* ignore remaining fields */ | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | /* | |
1079 | * Decode COMMIT reply | |
1080 | */ | |
1081 | static int | |
d61005a6 | 1082 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1083 | { |
1084 | int status; | |
1085 | ||
1086 | status = ntohl(*p++); | |
1087 | p = xdr_decode_wcc_data(p, res->fattr); | |
1088 | if (status != 0) | |
856dff3d | 1089 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1090 | |
1091 | res->verf->verifier[0] = *p++; | |
1092 | res->verf->verifier[1] = *p++; | |
1093 | return 0; | |
1094 | } | |
1095 | ||
b7fa0554 AG |
1096 | #ifdef CONFIG_NFS_V3_ACL |
1097 | /* | |
1098 | * Decode GETACL reply | |
1099 | */ | |
1100 | static int | |
d61005a6 | 1101 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1102 | struct nfs3_getaclres *res) |
1103 | { | |
1104 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1105 | int status = ntohl(*p++); | |
1106 | struct posix_acl **acl; | |
1107 | unsigned int *aclcnt; | |
1108 | int err, base; | |
1109 | ||
1110 | if (status != 0) | |
856dff3d | 1111 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1112 | p = xdr_decode_post_op_attr(p, res->fattr); |
1113 | res->mask = ntohl(*p++); | |
1114 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1115 | return -EINVAL; | |
1116 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1117 | ||
1118 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1119 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1120 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1121 | ||
1122 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1123 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1124 | if (err > 0) | |
1125 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1126 | return (err > 0) ? 0 : err; | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * Decode setacl reply. | |
1131 | */ | |
1132 | static int | |
d61005a6 | 1133 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1134 | { |
1135 | int status = ntohl(*p++); | |
1136 | ||
1137 | if (status) | |
856dff3d | 1138 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1139 | xdr_decode_post_op_attr(p, fattr); |
1140 | return 0; | |
1141 | } | |
1142 | #endif /* CONFIG_NFS_V3_ACL */ | |
1143 | ||
1da177e4 LT |
1144 | #define PROC(proc, argtype, restype, timer) \ |
1145 | [NFS3PROC_##proc] = { \ | |
1146 | .p_proc = NFS3PROC_##proc, \ | |
1147 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1148 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
2bea90d4 CL |
1149 | .p_arglen = NFS3_##argtype##_sz, \ |
1150 | .p_replen = NFS3_##restype##_sz, \ | |
cc0175c1 CL |
1151 | .p_timer = timer, \ |
1152 | .p_statidx = NFS3PROC_##proc, \ | |
1153 | .p_name = #proc, \ | |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | struct rpc_procinfo nfs3_procedures[] = { | |
1157 | PROC(GETATTR, fhandle, attrstat, 1), | |
1158 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1159 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1160 | PROC(ACCESS, accessargs, accessres, 1), | |
1161 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1162 | PROC(READ, readargs, readres, 3), | |
1163 | PROC(WRITE, writeargs, writeres, 4), | |
1164 | PROC(CREATE, createargs, createres, 0), | |
1165 | PROC(MKDIR, mkdirargs, createres, 0), | |
1166 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1167 | PROC(MKNOD, mknodargs, createres, 0), | |
4fdc17b2 | 1168 | PROC(REMOVE, removeargs, removeres, 0), |
1da177e4 LT |
1169 | PROC(RMDIR, diropargs, wccstat, 0), |
1170 | PROC(RENAME, renameargs, renameres, 0), | |
1171 | PROC(LINK, linkargs, linkres, 0), | |
1172 | PROC(READDIR, readdirargs, readdirres, 3), | |
1173 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1174 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1175 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1176 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1177 | PROC(COMMIT, commitargs, commitres, 5), | |
1178 | }; | |
1179 | ||
1180 | struct rpc_version nfs_version3 = { | |
1181 | .number = 3, | |
e8c96f8c | 1182 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1183 | .procs = nfs3_procedures |
1184 | }; | |
1185 | ||
b7fa0554 AG |
1186 | #ifdef CONFIG_NFS_V3_ACL |
1187 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1188 | [ACLPROC3_GETACL] = { | |
1189 | .p_proc = ACLPROC3_GETACL, | |
1190 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1191 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
2bea90d4 CL |
1192 | .p_arglen = ACL3_getaclargs_sz, |
1193 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 1194 | .p_timer = 1, |
cc0175c1 | 1195 | .p_name = "GETACL", |
b7fa0554 AG |
1196 | }, |
1197 | [ACLPROC3_SETACL] = { | |
1198 | .p_proc = ACLPROC3_SETACL, | |
1199 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1200 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
2bea90d4 CL |
1201 | .p_arglen = ACL3_setaclargs_sz, |
1202 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 1203 | .p_timer = 0, |
cc0175c1 | 1204 | .p_name = "SETACL", |
b7fa0554 AG |
1205 | }, |
1206 | }; | |
1207 | ||
1208 | struct rpc_version nfsacl_version3 = { | |
1209 | .number = 3, | |
1210 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1211 | sizeof(nfs3_acl_procedures[0]), | |
1212 | .procs = nfs3_acl_procedures, | |
1213 | }; | |
1214 | #endif /* CONFIG_NFS_V3_ACL */ |