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> | |
1da177e4 LT |
12 | #include <linux/errno.h> |
13 | #include <linux/string.h> | |
14 | #include <linux/in.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/proc_fs.h> | |
17 | #include <linux/kdev_t.h> | |
18 | #include <linux/sunrpc/clnt.h> | |
19 | #include <linux/nfs.h> | |
20 | #include <linux/nfs3.h> | |
21 | #include <linux/nfs_fs.h> | |
b7fa0554 | 22 | #include <linux/nfsacl.h> |
f7b422b1 | 23 | #include "internal.h" |
1da177e4 LT |
24 | |
25 | #define NFSDBG_FACILITY NFSDBG_XDR | |
26 | ||
27 | /* Mapping from NFS error code to "errno" error code. */ | |
28 | #define errno_NFSERR_IO EIO | |
29 | ||
1da177e4 LT |
30 | /* |
31 | * Declare the space requirements for NFS arguments and replies as | |
32 | * number of 32bit-words | |
33 | */ | |
34 | #define NFS3_fhandle_sz (1+16) | |
35 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ | |
36 | #define NFS3_sattr_sz (15) | |
37 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) | |
38 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) | |
39 | #define NFS3_fattr_sz (21) | |
40 | #define NFS3_wcc_attr_sz (6) | |
41 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) | |
42 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) | |
43 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) | |
44 | #define NFS3_fsstat_sz | |
45 | #define NFS3_fsinfo_sz | |
46 | #define NFS3_pathconf_sz | |
47 | #define NFS3_entry_sz (NFS3_filename_sz+3) | |
48 | ||
49 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) | |
50 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) | |
4fdc17b2 | 51 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
1da177e4 LT |
52 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
53 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) | |
54 | #define NFS3_readargs_sz (NFS3_fh_sz+3) | |
55 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) | |
56 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
57 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
94a6d753 | 58 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
1da177e4 LT |
59 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
60 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) | |
61 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) | |
62 | #define NFS3_readdirargs_sz (NFS3_fh_sz+2) | |
63 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) | |
64 | ||
65 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) | |
66 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) | |
4fdc17b2 | 67 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
1da177e4 LT |
68 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
69 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) | |
70 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) | |
71 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) | |
72 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) | |
73 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
74 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) | |
75 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
76 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) | |
77 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) | |
78 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) | |
79 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) | |
80 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) | |
81 | ||
b7fa0554 | 82 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
ae46141f TM |
83 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
84 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
85 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ | |
86 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) | |
b7fa0554 AG |
87 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
88 | ||
1da177e4 LT |
89 | /* |
90 | * Map file type to S_IFMT bits | |
91 | */ | |
bca79478 TM |
92 | static const umode_t nfs_type2fmt[] = { |
93 | [NF3BAD] = 0, | |
94 | [NF3REG] = S_IFREG, | |
95 | [NF3DIR] = S_IFDIR, | |
96 | [NF3BLK] = S_IFBLK, | |
97 | [NF3CHR] = S_IFCHR, | |
98 | [NF3LNK] = S_IFLNK, | |
99 | [NF3SOCK] = S_IFSOCK, | |
100 | [NF3FIFO] = S_IFIFO, | |
1da177e4 LT |
101 | }; |
102 | ||
103 | /* | |
104 | * Common NFS XDR functions as inlines | |
105 | */ | |
d61005a6 | 106 | static inline __be32 * |
4fdc17b2 | 107 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
1da177e4 LT |
108 | { |
109 | return xdr_encode_array(p, fh->data, fh->size); | |
110 | } | |
111 | ||
d61005a6 AV |
112 | static inline __be32 * |
113 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) | |
1da177e4 LT |
114 | { |
115 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
116 | memcpy(fh->data, p, fh->size); | |
117 | return p + XDR_QUADLEN(fh->size); | |
118 | } | |
119 | return NULL; | |
120 | } | |
121 | ||
122 | /* | |
123 | * Encode/decode time. | |
124 | */ | |
d61005a6 AV |
125 | static inline __be32 * |
126 | xdr_encode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
127 | { |
128 | *p++ = htonl(timep->tv_sec); | |
129 | *p++ = htonl(timep->tv_nsec); | |
130 | return p; | |
131 | } | |
132 | ||
d61005a6 AV |
133 | static inline __be32 * |
134 | xdr_decode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
135 | { |
136 | timep->tv_sec = ntohl(*p++); | |
137 | timep->tv_nsec = ntohl(*p++); | |
138 | return p; | |
139 | } | |
140 | ||
d61005a6 AV |
141 | static __be32 * |
142 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
143 | { |
144 | unsigned int type, major, minor; | |
bca79478 | 145 | umode_t fmode; |
1da177e4 LT |
146 | |
147 | type = ntohl(*p++); | |
bca79478 TM |
148 | if (type > NF3FIFO) |
149 | type = NF3NON; | |
150 | fmode = nfs_type2fmt[type]; | |
1da177e4 LT |
151 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; |
152 | fattr->nlink = ntohl(*p++); | |
153 | fattr->uid = ntohl(*p++); | |
154 | fattr->gid = ntohl(*p++); | |
155 | p = xdr_decode_hyper(p, &fattr->size); | |
156 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
157 | ||
158 | /* Turn remote device info into Linux-specific dev_t */ | |
159 | major = ntohl(*p++); | |
160 | minor = ntohl(*p++); | |
161 | fattr->rdev = MKDEV(major, minor); | |
162 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
163 | fattr->rdev = 0; | |
164 | ||
8b4bdcf8 TM |
165 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
166 | fattr->fsid.minor = 0; | |
1da177e4 LT |
167 | p = xdr_decode_hyper(p, &fattr->fileid); |
168 | p = xdr_decode_time3(p, &fattr->atime); | |
169 | p = xdr_decode_time3(p, &fattr->mtime); | |
170 | p = xdr_decode_time3(p, &fattr->ctime); | |
171 | ||
172 | /* Update the mode bits */ | |
9e6e70f8 | 173 | fattr->valid |= NFS_ATTR_FATTR_V3; |
1da177e4 LT |
174 | return p; |
175 | } | |
176 | ||
d61005a6 AV |
177 | static inline __be32 * |
178 | xdr_encode_sattr(__be32 *p, struct iattr *attr) | |
1da177e4 LT |
179 | { |
180 | if (attr->ia_valid & ATTR_MODE) { | |
181 | *p++ = xdr_one; | |
cf3fff54 | 182 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
183 | } else { |
184 | *p++ = xdr_zero; | |
185 | } | |
186 | if (attr->ia_valid & ATTR_UID) { | |
187 | *p++ = xdr_one; | |
188 | *p++ = htonl(attr->ia_uid); | |
189 | } else { | |
190 | *p++ = xdr_zero; | |
191 | } | |
192 | if (attr->ia_valid & ATTR_GID) { | |
193 | *p++ = xdr_one; | |
194 | *p++ = htonl(attr->ia_gid); | |
195 | } else { | |
196 | *p++ = xdr_zero; | |
197 | } | |
198 | if (attr->ia_valid & ATTR_SIZE) { | |
199 | *p++ = xdr_one; | |
200 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
201 | } else { | |
202 | *p++ = xdr_zero; | |
203 | } | |
204 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
205 | *p++ = xdr_two; | |
206 | p = xdr_encode_time3(p, &attr->ia_atime); | |
207 | } else if (attr->ia_valid & ATTR_ATIME) { | |
208 | *p++ = xdr_one; | |
209 | } else { | |
210 | *p++ = xdr_zero; | |
211 | } | |
212 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
213 | *p++ = xdr_two; | |
214 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
215 | } else if (attr->ia_valid & ATTR_MTIME) { | |
216 | *p++ = xdr_one; | |
217 | } else { | |
218 | *p++ = xdr_zero; | |
219 | } | |
220 | return p; | |
221 | } | |
222 | ||
d61005a6 AV |
223 | static inline __be32 * |
224 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
225 | { |
226 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
227 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
228 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
9e6e70f8 TM |
229 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
230 | | NFS_ATTR_FATTR_PREMTIME | |
231 | | NFS_ATTR_FATTR_PRECTIME; | |
1da177e4 LT |
232 | return p; |
233 | } | |
234 | ||
d61005a6 AV |
235 | static inline __be32 * |
236 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
237 | { |
238 | if (*p++) | |
239 | p = xdr_decode_fattr(p, fattr); | |
240 | return p; | |
241 | } | |
242 | ||
d61005a6 AV |
243 | static inline __be32 * |
244 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
245 | { |
246 | if (*p++) | |
247 | return xdr_decode_wcc_attr(p, fattr); | |
248 | return p; | |
249 | } | |
250 | ||
251 | ||
d61005a6 AV |
252 | static inline __be32 * |
253 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
254 | { |
255 | p = xdr_decode_pre_op_attr(p, fattr); | |
256 | return xdr_decode_post_op_attr(p, fattr); | |
257 | } | |
258 | ||
259 | /* | |
260 | * NFS encode functions | |
261 | */ | |
262 | ||
263 | /* | |
264 | * Encode file handle argument | |
265 | */ | |
266 | static int | |
d61005a6 | 267 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
1da177e4 LT |
268 | { |
269 | p = xdr_encode_fhandle(p, fh); | |
270 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
271 | return 0; | |
272 | } | |
273 | ||
274 | /* | |
275 | * Encode SETATTR arguments | |
276 | */ | |
277 | static int | |
d61005a6 | 278 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
1da177e4 LT |
279 | { |
280 | p = xdr_encode_fhandle(p, args->fh); | |
281 | p = xdr_encode_sattr(p, args->sattr); | |
282 | *p++ = htonl(args->guard); | |
283 | if (args->guard) | |
284 | p = xdr_encode_time3(p, &args->guardtime); | |
285 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | /* | |
290 | * Encode directory ops argument | |
291 | */ | |
292 | static int | |
d61005a6 | 293 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
1da177e4 LT |
294 | { |
295 | p = xdr_encode_fhandle(p, args->fh); | |
296 | p = xdr_encode_array(p, args->name, args->len); | |
297 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
298 | return 0; | |
299 | } | |
300 | ||
4fdc17b2 TM |
301 | /* |
302 | * Encode REMOVE argument | |
303 | */ | |
304 | static int | |
305 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) | |
306 | { | |
307 | p = xdr_encode_fhandle(p, args->fh); | |
308 | p = xdr_encode_array(p, args->name.name, args->name.len); | |
309 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
310 | return 0; | |
311 | } | |
312 | ||
1da177e4 LT |
313 | /* |
314 | * Encode access() argument | |
315 | */ | |
316 | static int | |
d61005a6 | 317 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
1da177e4 LT |
318 | { |
319 | p = xdr_encode_fhandle(p, args->fh); | |
320 | *p++ = htonl(args->access); | |
321 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
322 | return 0; | |
323 | } | |
324 | ||
325 | /* | |
326 | * Arguments to a READ call. Since we read data directly into the page | |
327 | * cache, we also set up the reply iovec here so that iov[1] points | |
328 | * exactly to the page we want to fetch. | |
329 | */ | |
330 | static int | |
d61005a6 | 331 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
1da177e4 | 332 | { |
a17c2153 | 333 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
334 | unsigned int replen; |
335 | u32 count = args->count; | |
336 | ||
337 | p = xdr_encode_fhandle(p, args->fh); | |
338 | p = xdr_encode_hyper(p, args->offset); | |
339 | *p++ = htonl(count); | |
340 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
341 | ||
342 | /* Inline the page array */ | |
343 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
344 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
345 | args->pages, args->pgbase, count); | |
4f22ccc3 | 346 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
1da177e4 LT |
347 | return 0; |
348 | } | |
349 | ||
350 | /* | |
351 | * Write arguments. Splice the buffer to be written into the iovec. | |
352 | */ | |
353 | static int | |
d61005a6 | 354 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
355 | { |
356 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
357 | u32 count = args->count; | |
358 | ||
359 | p = xdr_encode_fhandle(p, args->fh); | |
360 | p = xdr_encode_hyper(p, args->offset); | |
361 | *p++ = htonl(count); | |
362 | *p++ = htonl(args->stable); | |
363 | *p++ = htonl(count); | |
364 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
365 | ||
366 | /* Copy the page array */ | |
367 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
4f22ccc3 | 368 | sndbuf->flags |= XDRBUF_WRITE; |
1da177e4 LT |
369 | return 0; |
370 | } | |
371 | ||
372 | /* | |
373 | * Encode CREATE arguments | |
374 | */ | |
375 | static int | |
d61005a6 | 376 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
377 | { |
378 | p = xdr_encode_fhandle(p, args->fh); | |
379 | p = xdr_encode_array(p, args->name, args->len); | |
380 | ||
381 | *p++ = htonl(args->createmode); | |
382 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
383 | *p++ = args->verifier[0]; | |
384 | *p++ = args->verifier[1]; | |
385 | } else | |
386 | p = xdr_encode_sattr(p, args->sattr); | |
387 | ||
388 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
389 | return 0; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Encode MKDIR arguments | |
394 | */ | |
395 | static int | |
d61005a6 | 396 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
397 | { |
398 | p = xdr_encode_fhandle(p, args->fh); | |
399 | p = xdr_encode_array(p, args->name, args->len); | |
400 | p = xdr_encode_sattr(p, args->sattr); | |
401 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
402 | return 0; | |
403 | } | |
404 | ||
405 | /* | |
406 | * Encode SYMLINK arguments | |
407 | */ | |
408 | static int | |
d61005a6 | 409 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
410 | { |
411 | p = xdr_encode_fhandle(p, args->fromfh); | |
412 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
413 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 414 | *p++ = htonl(args->pathlen); |
1da177e4 | 415 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
416 | |
417 | /* Copy the page */ | |
418 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
419 | return 0; |
420 | } | |
421 | ||
422 | /* | |
423 | * Encode MKNOD arguments | |
424 | */ | |
425 | static int | |
d61005a6 | 426 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
427 | { |
428 | p = xdr_encode_fhandle(p, args->fh); | |
429 | p = xdr_encode_array(p, args->name, args->len); | |
430 | *p++ = htonl(args->type); | |
431 | p = xdr_encode_sattr(p, args->sattr); | |
432 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
433 | *p++ = htonl(MAJOR(args->rdev)); | |
434 | *p++ = htonl(MINOR(args->rdev)); | |
435 | } | |
436 | ||
437 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Encode RENAME arguments | |
443 | */ | |
444 | static int | |
d61005a6 | 445 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
1da177e4 LT |
446 | { |
447 | p = xdr_encode_fhandle(p, args->fromfh); | |
448 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
449 | p = xdr_encode_fhandle(p, args->tofh); | |
450 | p = xdr_encode_array(p, args->toname, args->tolen); | |
451 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | /* | |
456 | * Encode LINK arguments | |
457 | */ | |
458 | static int | |
d61005a6 | 459 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
460 | { |
461 | p = xdr_encode_fhandle(p, args->fromfh); | |
462 | p = xdr_encode_fhandle(p, args->tofh); | |
463 | p = xdr_encode_array(p, args->toname, args->tolen); | |
464 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
465 | return 0; | |
466 | } | |
467 | ||
468 | /* | |
469 | * Encode arguments to readdir call | |
470 | */ | |
471 | static int | |
d61005a6 | 472 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 473 | { |
a17c2153 | 474 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
475 | unsigned int replen; |
476 | u32 count = args->count; | |
477 | ||
478 | p = xdr_encode_fhandle(p, args->fh); | |
479 | p = xdr_encode_hyper(p, args->cookie); | |
480 | *p++ = args->verf[0]; | |
481 | *p++ = args->verf[1]; | |
482 | if (args->plus) { | |
483 | /* readdirplus: need dircount + buffer size. | |
484 | * We just make sure we make dircount big enough */ | |
485 | *p++ = htonl(count >> 3); | |
486 | } | |
487 | *p++ = htonl(count); | |
488 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
489 | ||
490 | /* Inline the page array */ | |
491 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
492 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
493 | return 0; | |
494 | } | |
495 | ||
496 | /* | |
497 | * Decode the result of a readdir call. | |
498 | * We just check for syntactical correctness. | |
499 | */ | |
500 | static int | |
d61005a6 | 501 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
502 | { |
503 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
504 | struct kvec *iov = rcvbuf->head; | |
505 | struct page **page; | |
c957c526 CL |
506 | size_t hdrlen; |
507 | u32 len, recvd, pglen; | |
643f8111 | 508 | int status, nr = 0; |
d61005a6 | 509 | __be32 *entry, *end, *kaddr; |
1da177e4 LT |
510 | |
511 | status = ntohl(*p++); | |
512 | /* Decode post_op_attrs */ | |
513 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
514 | if (status) | |
856dff3d | 515 | return nfs_stat_to_errno(status); |
1da177e4 LT |
516 | /* Decode verifier cookie */ |
517 | if (res->verf) { | |
518 | res->verf[0] = *p++; | |
519 | res->verf[1] = *p++; | |
520 | } else { | |
521 | p += 2; | |
522 | } | |
523 | ||
524 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
525 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 526 | dprintk("NFS: READDIR reply header overflowed:" |
c957c526 | 527 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
528 | return -errno_NFSERR_IO; |
529 | } else if (iov->iov_len != hdrlen) { | |
530 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
531 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
532 | } | |
533 | ||
534 | pglen = rcvbuf->page_len; | |
535 | recvd = rcvbuf->len - hdrlen; | |
536 | if (pglen > recvd) | |
537 | pglen = recvd; | |
538 | page = rcvbuf->pages; | |
d61005a6 AV |
539 | kaddr = p = kmap_atomic(*page, KM_USER0); |
540 | end = (__be32 *)((char *)p + pglen); | |
1da177e4 | 541 | entry = p; |
643f8111 JL |
542 | |
543 | /* Make sure the packet actually has a value_follows and EOF entry */ | |
544 | if ((entry + 1) > end) | |
545 | goto short_pkt; | |
546 | ||
547 | for (; *p++; nr++) { | |
1da177e4 LT |
548 | if (p + 3 > end) |
549 | goto short_pkt; | |
550 | p += 2; /* inode # */ | |
551 | len = ntohl(*p++); /* string length */ | |
552 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
553 | if (len > NFS3_MAXNAMLEN) { | |
c957c526 | 554 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
1da177e4 LT |
555 | len); |
556 | goto err_unmap; | |
557 | } | |
558 | ||
559 | if (res->plus) { | |
560 | /* post_op_attr */ | |
561 | if (p + 2 > end) | |
562 | goto short_pkt; | |
563 | if (*p++) { | |
564 | p += 21; | |
565 | if (p + 1 > end) | |
566 | goto short_pkt; | |
567 | } | |
568 | /* post_op_fh3 */ | |
569 | if (*p++) { | |
570 | if (p + 1 > end) | |
571 | goto short_pkt; | |
572 | len = ntohl(*p++); | |
573 | if (len > NFS3_FHSIZE) { | |
fe82a183 | 574 | dprintk("NFS: giant filehandle in " |
c957c526 | 575 | "readdir (len 0x%x)!\n", len); |
1da177e4 LT |
576 | goto err_unmap; |
577 | } | |
578 | p += XDR_QUADLEN(len); | |
579 | } | |
580 | } | |
581 | ||
582 | if (p + 2 > end) | |
583 | goto short_pkt; | |
584 | entry = p; | |
585 | } | |
643f8111 JL |
586 | |
587 | /* | |
588 | * Apparently some server sends responses that are a valid size, but | |
589 | * contain no entries, and have value_follows==0 and EOF==0. For | |
590 | * those, just set the EOF marker. | |
591 | */ | |
592 | if (!nr && entry[1] == 0) { | |
593 | dprintk("NFS: readdir reply truncated!\n"); | |
594 | entry[1] = 1; | |
595 | } | |
1da177e4 LT |
596 | out: |
597 | kunmap_atomic(kaddr, KM_USER0); | |
598 | return nr; | |
599 | short_pkt: | |
643f8111 JL |
600 | /* |
601 | * When we get a short packet there are 2 possibilities. We can | |
602 | * return an error, or fix up the response to look like a valid | |
603 | * response and return what we have so far. If there are no | |
604 | * entries and the packet was short, then return -EIO. If there | |
605 | * are valid entries in the response, return them and pretend that | |
606 | * the call was successful, but incomplete. The caller can retry the | |
607 | * readdir starting at the last cookie. | |
608 | */ | |
1da177e4 | 609 | entry[0] = entry[1] = 0; |
643f8111 JL |
610 | if (!nr) |
611 | nr = -errno_NFSERR_IO; | |
1da177e4 LT |
612 | goto out; |
613 | err_unmap: | |
614 | nr = -errno_NFSERR_IO; | |
615 | goto out; | |
616 | } | |
617 | ||
0dbb4c67 AV |
618 | __be32 * |
619 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) | |
1da177e4 LT |
620 | { |
621 | struct nfs_entry old = *entry; | |
622 | ||
623 | if (!*p++) { | |
624 | if (!*p) | |
625 | return ERR_PTR(-EAGAIN); | |
626 | entry->eof = 1; | |
627 | return ERR_PTR(-EBADCOOKIE); | |
628 | } | |
629 | ||
630 | p = xdr_decode_hyper(p, &entry->ino); | |
631 | entry->len = ntohl(*p++); | |
632 | entry->name = (const char *) p; | |
633 | p += XDR_QUADLEN(entry->len); | |
634 | entry->prev_cookie = entry->cookie; | |
635 | p = xdr_decode_hyper(p, &entry->cookie); | |
636 | ||
637 | if (plus) { | |
638 | entry->fattr->valid = 0; | |
639 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
640 | /* In fact, a post_op_fh3: */ | |
641 | if (*p++) { | |
642 | p = xdr_decode_fhandle(p, entry->fh); | |
643 | /* Ugh -- server reply was truncated */ | |
644 | if (p == NULL) { | |
645 | dprintk("NFS: FH truncated\n"); | |
646 | *entry = old; | |
647 | return ERR_PTR(-EAGAIN); | |
648 | } | |
649 | } else | |
650 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
651 | } | |
652 | ||
653 | entry->eof = !p[0] && p[1]; | |
654 | return p; | |
655 | } | |
656 | ||
657 | /* | |
658 | * Encode COMMIT arguments | |
659 | */ | |
660 | static int | |
d61005a6 | 661 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
662 | { |
663 | p = xdr_encode_fhandle(p, args->fh); | |
664 | p = xdr_encode_hyper(p, args->offset); | |
665 | *p++ = htonl(args->count); | |
666 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
667 | return 0; | |
668 | } | |
669 | ||
b7fa0554 AG |
670 | #ifdef CONFIG_NFS_V3_ACL |
671 | /* | |
672 | * Encode GETACL arguments | |
673 | */ | |
674 | static int | |
d61005a6 | 675 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
676 | struct nfs3_getaclargs *args) |
677 | { | |
a17c2153 | 678 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
b7fa0554 AG |
679 | unsigned int replen; |
680 | ||
681 | p = xdr_encode_fhandle(p, args->fh); | |
682 | *p++ = htonl(args->mask); | |
683 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
684 | ||
685 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
686 | /* Inline the page array */ | |
687 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
688 | ACL3_getaclres_sz) << 2; | |
689 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
690 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
691 | } | |
692 | return 0; | |
693 | } | |
694 | ||
695 | /* | |
696 | * Encode SETACL arguments | |
697 | */ | |
698 | static int | |
d61005a6 | 699 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
700 | struct nfs3_setaclargs *args) |
701 | { | |
702 | struct xdr_buf *buf = &req->rq_snd_buf; | |
ae46141f TM |
703 | unsigned int base; |
704 | int err; | |
b7fa0554 AG |
705 | |
706 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
707 | *p++ = htonl(args->mask); | |
ae46141f TM |
708 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
709 | base = req->rq_slen; | |
710 | ||
711 | if (args->npages != 0) | |
712 | xdr_encode_pages(buf, args->pages, 0, args->len); | |
713 | else | |
83404372 TM |
714 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, |
715 | p + XDR_QUADLEN(args->len)); | |
b7fa0554 AG |
716 | |
717 | err = nfsacl_encode(buf, base, args->inode, | |
718 | (args->mask & NFS_ACL) ? | |
719 | args->acl_access : NULL, 1, 0); | |
720 | if (err > 0) | |
721 | err = nfsacl_encode(buf, base + err, args->inode, | |
722 | (args->mask & NFS_DFACL) ? | |
723 | args->acl_default : NULL, 1, | |
724 | NFS_ACL_DEFAULT); | |
725 | return (err > 0) ? 0 : err; | |
726 | } | |
727 | #endif /* CONFIG_NFS_V3_ACL */ | |
728 | ||
1da177e4 LT |
729 | /* |
730 | * NFS XDR decode functions | |
731 | */ | |
732 | ||
733 | /* | |
734 | * Decode attrstat reply. | |
735 | */ | |
736 | static int | |
d61005a6 | 737 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
738 | { |
739 | int status; | |
740 | ||
741 | if ((status = ntohl(*p++))) | |
856dff3d | 742 | return nfs_stat_to_errno(status); |
1da177e4 LT |
743 | xdr_decode_fattr(p, fattr); |
744 | return 0; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Decode status+wcc_data reply | |
749 | * SATTR, REMOVE, RMDIR | |
750 | */ | |
751 | static int | |
d61005a6 | 752 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
753 | { |
754 | int status; | |
755 | ||
756 | if ((status = ntohl(*p++))) | |
856dff3d | 757 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
758 | xdr_decode_wcc_data(p, fattr); |
759 | return status; | |
760 | } | |
761 | ||
4fdc17b2 TM |
762 | static int |
763 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
764 | { | |
d346890b | 765 | return nfs3_xdr_wccstat(req, p, res->dir_attr); |
4fdc17b2 TM |
766 | } |
767 | ||
1da177e4 LT |
768 | /* |
769 | * Decode LOOKUP reply | |
770 | */ | |
771 | static int | |
d61005a6 | 772 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
773 | { |
774 | int status; | |
775 | ||
776 | if ((status = ntohl(*p++))) { | |
856dff3d | 777 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
778 | } else { |
779 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
780 | return -errno_NFSERR_IO; | |
781 | p = xdr_decode_post_op_attr(p, res->fattr); | |
782 | } | |
783 | xdr_decode_post_op_attr(p, res->dir_attr); | |
784 | return status; | |
785 | } | |
786 | ||
787 | /* | |
788 | * Decode ACCESS reply | |
789 | */ | |
790 | static int | |
d61005a6 | 791 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
792 | { |
793 | int status = ntohl(*p++); | |
794 | ||
795 | p = xdr_decode_post_op_attr(p, res->fattr); | |
796 | if (status) | |
856dff3d | 797 | return nfs_stat_to_errno(status); |
1da177e4 LT |
798 | res->access = ntohl(*p++); |
799 | return 0; | |
800 | } | |
801 | ||
802 | static int | |
d61005a6 | 803 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 804 | { |
a17c2153 | 805 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
1da177e4 LT |
806 | unsigned int replen; |
807 | ||
808 | p = xdr_encode_fhandle(p, args->fh); | |
809 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
810 | ||
811 | /* Inline the page array */ | |
812 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
813 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
814 | return 0; | |
815 | } | |
816 | ||
817 | /* | |
818 | * Decode READLINK reply | |
819 | */ | |
820 | static int | |
d61005a6 | 821 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
822 | { |
823 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
824 | struct kvec *iov = rcvbuf->head; | |
c957c526 CL |
825 | size_t hdrlen; |
826 | u32 len, recvd; | |
1da177e4 LT |
827 | char *kaddr; |
828 | int status; | |
829 | ||
830 | status = ntohl(*p++); | |
831 | p = xdr_decode_post_op_attr(p, fattr); | |
832 | ||
833 | if (status != 0) | |
856dff3d | 834 | return nfs_stat_to_errno(status); |
1da177e4 LT |
835 | |
836 | /* Convert length of symlink */ | |
837 | len = ntohl(*p++); | |
c957c526 | 838 | if (len >= rcvbuf->page_len) { |
fe82a183 | 839 | dprintk("nfs: server returned giant symlink!\n"); |
1da177e4 LT |
840 | return -ENAMETOOLONG; |
841 | } | |
842 | ||
843 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
844 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 845 | dprintk("NFS: READLINK reply header overflowed:" |
c957c526 | 846 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
847 | return -errno_NFSERR_IO; |
848 | } else if (iov->iov_len != hdrlen) { | |
fe82a183 CL |
849 | dprintk("NFS: READLINK header is short. " |
850 | "iovec will be shifted.\n"); | |
1da177e4 LT |
851 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
852 | } | |
853 | recvd = req->rq_rcv_buf.len - hdrlen; | |
854 | if (recvd < len) { | |
fe82a183 | 855 | dprintk("NFS: server cheating in readlink reply: " |
1da177e4 LT |
856 | "count %u > recvd %u\n", len, recvd); |
857 | return -EIO; | |
858 | } | |
859 | ||
860 | /* NULL terminate the string we got */ | |
861 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
862 | kaddr[len+rcvbuf->page_base] = '\0'; | |
863 | kunmap_atomic(kaddr, KM_USER0); | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* | |
868 | * Decode READ reply | |
869 | */ | |
870 | static int | |
d61005a6 | 871 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
872 | { |
873 | struct kvec *iov = req->rq_rcv_buf.head; | |
c957c526 CL |
874 | size_t hdrlen; |
875 | u32 count, ocount, recvd; | |
876 | int status; | |
1da177e4 LT |
877 | |
878 | status = ntohl(*p++); | |
879 | p = xdr_decode_post_op_attr(p, res->fattr); | |
880 | ||
881 | if (status != 0) | |
856dff3d | 882 | return nfs_stat_to_errno(status); |
1da177e4 | 883 | |
c957c526 | 884 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
1da177e4 LT |
885 | * in that it puts the count both in the res struct and in the |
886 | * opaque data count. */ | |
887 | count = ntohl(*p++); | |
888 | res->eof = ntohl(*p++); | |
889 | ocount = ntohl(*p++); | |
890 | ||
891 | if (ocount != count) { | |
fe82a183 | 892 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
1da177e4 LT |
893 | return -errno_NFSERR_IO; |
894 | } | |
895 | ||
896 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
897 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 898 | dprintk("NFS: READ reply header overflowed:" |
c957c526 | 899 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
900 | return -errno_NFSERR_IO; |
901 | } else if (iov->iov_len != hdrlen) { | |
902 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
903 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
904 | } | |
905 | ||
906 | recvd = req->rq_rcv_buf.len - hdrlen; | |
907 | if (count > recvd) { | |
fe82a183 | 908 | dprintk("NFS: server cheating in read reply: " |
c957c526 | 909 | "count %u > recvd %u\n", count, recvd); |
1da177e4 LT |
910 | count = recvd; |
911 | res->eof = 0; | |
912 | } | |
913 | ||
914 | if (count < res->count) | |
915 | res->count = count; | |
916 | ||
917 | return count; | |
918 | } | |
919 | ||
920 | /* | |
921 | * Decode WRITE response | |
922 | */ | |
923 | static int | |
d61005a6 | 924 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
925 | { |
926 | int status; | |
927 | ||
928 | status = ntohl(*p++); | |
929 | p = xdr_decode_wcc_data(p, res->fattr); | |
930 | ||
931 | if (status != 0) | |
856dff3d | 932 | return nfs_stat_to_errno(status); |
1da177e4 LT |
933 | |
934 | res->count = ntohl(*p++); | |
935 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
936 | res->verf->verifier[0] = *p++; | |
937 | res->verf->verifier[1] = *p++; | |
938 | ||
939 | return res->count; | |
940 | } | |
941 | ||
942 | /* | |
943 | * Decode a CREATE response | |
944 | */ | |
945 | static int | |
d61005a6 | 946 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
947 | { |
948 | int status; | |
949 | ||
950 | status = ntohl(*p++); | |
951 | if (status == 0) { | |
952 | if (*p++) { | |
953 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
954 | return -errno_NFSERR_IO; | |
955 | p = xdr_decode_post_op_attr(p, res->fattr); | |
956 | } else { | |
957 | memset(res->fh, 0, sizeof(*res->fh)); | |
958 | /* Do decode post_op_attr but set it to NULL */ | |
959 | p = xdr_decode_post_op_attr(p, res->fattr); | |
960 | res->fattr->valid = 0; | |
961 | } | |
962 | } else { | |
856dff3d | 963 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
964 | } |
965 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
966 | return status; | |
967 | } | |
968 | ||
969 | /* | |
970 | * Decode RENAME reply | |
971 | */ | |
972 | static int | |
d61005a6 | 973 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
1da177e4 LT |
974 | { |
975 | int status; | |
976 | ||
977 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 978 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
979 | p = xdr_decode_wcc_data(p, res->fromattr); |
980 | p = xdr_decode_wcc_data(p, res->toattr); | |
981 | return status; | |
982 | } | |
983 | ||
984 | /* | |
985 | * Decode LINK reply | |
986 | */ | |
987 | static int | |
d61005a6 | 988 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
989 | { |
990 | int status; | |
991 | ||
992 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 993 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
994 | p = xdr_decode_post_op_attr(p, res->fattr); |
995 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
996 | return status; | |
997 | } | |
998 | ||
999 | /* | |
1000 | * Decode FSSTAT reply | |
1001 | */ | |
1002 | static int | |
d61005a6 | 1003 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
1004 | { |
1005 | int status; | |
1006 | ||
1007 | status = ntohl(*p++); | |
1008 | ||
1009 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1010 | if (status != 0) | |
856dff3d | 1011 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1012 | |
1013 | p = xdr_decode_hyper(p, &res->tbytes); | |
1014 | p = xdr_decode_hyper(p, &res->fbytes); | |
1015 | p = xdr_decode_hyper(p, &res->abytes); | |
1016 | p = xdr_decode_hyper(p, &res->tfiles); | |
1017 | p = xdr_decode_hyper(p, &res->ffiles); | |
1018 | p = xdr_decode_hyper(p, &res->afiles); | |
1019 | ||
1020 | /* ignore invarsec */ | |
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | /* | |
1025 | * Decode FSINFO reply | |
1026 | */ | |
1027 | static int | |
d61005a6 | 1028 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1029 | { |
1030 | int status; | |
1031 | ||
1032 | status = ntohl(*p++); | |
1033 | ||
1034 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1035 | if (status != 0) | |
856dff3d | 1036 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1037 | |
1038 | res->rtmax = ntohl(*p++); | |
1039 | res->rtpref = ntohl(*p++); | |
1040 | res->rtmult = ntohl(*p++); | |
1041 | res->wtmax = ntohl(*p++); | |
1042 | res->wtpref = ntohl(*p++); | |
1043 | res->wtmult = ntohl(*p++); | |
1044 | res->dtpref = ntohl(*p++); | |
1045 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1046 | ||
1047 | /* ignore time_delta and properties */ | |
1048 | res->lease_time = 0; | |
1049 | return 0; | |
1050 | } | |
1051 | ||
1052 | /* | |
1053 | * Decode PATHCONF reply | |
1054 | */ | |
1055 | static int | |
d61005a6 | 1056 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1057 | { |
1058 | int status; | |
1059 | ||
1060 | status = ntohl(*p++); | |
1061 | ||
1062 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1063 | if (status != 0) | |
856dff3d | 1064 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1065 | res->max_link = ntohl(*p++); |
1066 | res->max_namelen = ntohl(*p++); | |
1067 | ||
1068 | /* ignore remaining fields */ | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * Decode COMMIT reply | |
1074 | */ | |
1075 | static int | |
d61005a6 | 1076 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1077 | { |
1078 | int status; | |
1079 | ||
1080 | status = ntohl(*p++); | |
1081 | p = xdr_decode_wcc_data(p, res->fattr); | |
1082 | if (status != 0) | |
856dff3d | 1083 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1084 | |
1085 | res->verf->verifier[0] = *p++; | |
1086 | res->verf->verifier[1] = *p++; | |
1087 | return 0; | |
1088 | } | |
1089 | ||
b7fa0554 AG |
1090 | #ifdef CONFIG_NFS_V3_ACL |
1091 | /* | |
1092 | * Decode GETACL reply | |
1093 | */ | |
1094 | static int | |
d61005a6 | 1095 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1096 | struct nfs3_getaclres *res) |
1097 | { | |
1098 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1099 | int status = ntohl(*p++); | |
1100 | struct posix_acl **acl; | |
1101 | unsigned int *aclcnt; | |
1102 | int err, base; | |
1103 | ||
1104 | if (status != 0) | |
856dff3d | 1105 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1106 | p = xdr_decode_post_op_attr(p, res->fattr); |
1107 | res->mask = ntohl(*p++); | |
1108 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1109 | return -EINVAL; | |
1110 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1111 | ||
1112 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1113 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1114 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1115 | ||
1116 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1117 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1118 | if (err > 0) | |
1119 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1120 | return (err > 0) ? 0 : err; | |
1121 | } | |
1122 | ||
1123 | /* | |
1124 | * Decode setacl reply. | |
1125 | */ | |
1126 | static int | |
d61005a6 | 1127 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1128 | { |
1129 | int status = ntohl(*p++); | |
1130 | ||
1131 | if (status) | |
856dff3d | 1132 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1133 | xdr_decode_post_op_attr(p, fattr); |
1134 | return 0; | |
1135 | } | |
1136 | #endif /* CONFIG_NFS_V3_ACL */ | |
1137 | ||
1da177e4 LT |
1138 | #define PROC(proc, argtype, restype, timer) \ |
1139 | [NFS3PROC_##proc] = { \ | |
1140 | .p_proc = NFS3PROC_##proc, \ | |
1141 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1142 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
2bea90d4 CL |
1143 | .p_arglen = NFS3_##argtype##_sz, \ |
1144 | .p_replen = NFS3_##restype##_sz, \ | |
cc0175c1 CL |
1145 | .p_timer = timer, \ |
1146 | .p_statidx = NFS3PROC_##proc, \ | |
1147 | .p_name = #proc, \ | |
1da177e4 LT |
1148 | } |
1149 | ||
1150 | struct rpc_procinfo nfs3_procedures[] = { | |
1151 | PROC(GETATTR, fhandle, attrstat, 1), | |
1152 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1153 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1154 | PROC(ACCESS, accessargs, accessres, 1), | |
1155 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1156 | PROC(READ, readargs, readres, 3), | |
1157 | PROC(WRITE, writeargs, writeres, 4), | |
1158 | PROC(CREATE, createargs, createres, 0), | |
1159 | PROC(MKDIR, mkdirargs, createres, 0), | |
1160 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1161 | PROC(MKNOD, mknodargs, createres, 0), | |
4fdc17b2 | 1162 | PROC(REMOVE, removeargs, removeres, 0), |
1da177e4 LT |
1163 | PROC(RMDIR, diropargs, wccstat, 0), |
1164 | PROC(RENAME, renameargs, renameres, 0), | |
1165 | PROC(LINK, linkargs, linkres, 0), | |
1166 | PROC(READDIR, readdirargs, readdirres, 3), | |
1167 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1168 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1169 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1170 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1171 | PROC(COMMIT, commitargs, commitres, 5), | |
1172 | }; | |
1173 | ||
1174 | struct rpc_version nfs_version3 = { | |
1175 | .number = 3, | |
e8c96f8c | 1176 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1177 | .procs = nfs3_procedures |
1178 | }; | |
1179 | ||
b7fa0554 AG |
1180 | #ifdef CONFIG_NFS_V3_ACL |
1181 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1182 | [ACLPROC3_GETACL] = { | |
1183 | .p_proc = ACLPROC3_GETACL, | |
1184 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1185 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
2bea90d4 CL |
1186 | .p_arglen = ACL3_getaclargs_sz, |
1187 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 1188 | .p_timer = 1, |
cc0175c1 | 1189 | .p_name = "GETACL", |
b7fa0554 AG |
1190 | }, |
1191 | [ACLPROC3_SETACL] = { | |
1192 | .p_proc = ACLPROC3_SETACL, | |
1193 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1194 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
2bea90d4 CL |
1195 | .p_arglen = ACL3_setaclargs_sz, |
1196 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 1197 | .p_timer = 0, |
cc0175c1 | 1198 | .p_name = "SETACL", |
b7fa0554 AG |
1199 | }, |
1200 | }; | |
1201 | ||
1202 | struct rpc_version nfsacl_version3 = { | |
1203 | .number = 3, | |
1204 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1205 | sizeof(nfs3_acl_procedures[0]), | |
1206 | .procs = nfs3_acl_procedures, | |
1207 | }; | |
1208 | #endif /* CONFIG_NFS_V3_ACL */ |