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