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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/nfs3xdr.c | |
3 | * | |
4 | * XDR functions to encode/decode NFSv3 RPC arguments and results. | |
5 | * | |
6 | * Copyright (C) 1996, 1997 Olaf Kirch | |
7 | */ | |
8 | ||
9 | #include <linux/param.h> | |
10 | #include <linux/time.h> | |
11 | #include <linux/mm.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/utsname.h> | |
14 | #include <linux/errno.h> | |
15 | #include <linux/string.h> | |
16 | #include <linux/in.h> | |
17 | #include <linux/pagemap.h> | |
18 | #include <linux/proc_fs.h> | |
19 | #include <linux/kdev_t.h> | |
20 | #include <linux/sunrpc/clnt.h> | |
21 | #include <linux/nfs.h> | |
22 | #include <linux/nfs3.h> | |
23 | #include <linux/nfs_fs.h> | |
b7fa0554 | 24 | #include <linux/nfsacl.h> |
f7b422b1 | 25 | #include "internal.h" |
1da177e4 LT |
26 | |
27 | #define NFSDBG_FACILITY NFSDBG_XDR | |
28 | ||
29 | /* Mapping from NFS error code to "errno" error code. */ | |
30 | #define errno_NFSERR_IO EIO | |
31 | ||
1da177e4 LT |
32 | /* |
33 | * Declare the space requirements for NFS arguments and replies as | |
34 | * number of 32bit-words | |
35 | */ | |
36 | #define NFS3_fhandle_sz (1+16) | |
37 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ | |
38 | #define NFS3_sattr_sz (15) | |
39 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) | |
40 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) | |
41 | #define NFS3_fattr_sz (21) | |
42 | #define NFS3_wcc_attr_sz (6) | |
43 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) | |
44 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) | |
45 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) | |
46 | #define NFS3_fsstat_sz | |
47 | #define NFS3_fsinfo_sz | |
48 | #define NFS3_pathconf_sz | |
49 | #define NFS3_entry_sz (NFS3_filename_sz+3) | |
50 | ||
51 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) | |
52 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) | |
4fdc17b2 | 53 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
1da177e4 LT |
54 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
55 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) | |
56 | #define NFS3_readargs_sz (NFS3_fh_sz+3) | |
57 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) | |
58 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
59 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) | |
94a6d753 | 60 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
1da177e4 LT |
61 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
62 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) | |
63 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) | |
64 | #define NFS3_readdirargs_sz (NFS3_fh_sz+2) | |
65 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) | |
66 | ||
67 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) | |
68 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) | |
4fdc17b2 | 69 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
1da177e4 LT |
70 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
71 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) | |
72 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) | |
73 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) | |
74 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) | |
75 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
76 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) | |
77 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
78 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) | |
79 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) | |
80 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) | |
81 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) | |
82 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) | |
83 | ||
b7fa0554 | 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 | */ | |
bca79478 TM |
94 | static const umode_t nfs_type2fmt[] = { |
95 | [NF3BAD] = 0, | |
96 | [NF3REG] = S_IFREG, | |
97 | [NF3DIR] = S_IFDIR, | |
98 | [NF3BLK] = S_IFBLK, | |
99 | [NF3CHR] = S_IFCHR, | |
100 | [NF3LNK] = S_IFLNK, | |
101 | [NF3SOCK] = S_IFSOCK, | |
102 | [NF3FIFO] = S_IFIFO, | |
1da177e4 LT |
103 | }; |
104 | ||
105 | /* | |
106 | * Common NFS XDR functions as inlines | |
107 | */ | |
d61005a6 | 108 | static inline __be32 * |
4fdc17b2 | 109 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
1da177e4 LT |
110 | { |
111 | return xdr_encode_array(p, fh->data, fh->size); | |
112 | } | |
113 | ||
d61005a6 AV |
114 | static inline __be32 * |
115 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) | |
1da177e4 LT |
116 | { |
117 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
118 | memcpy(fh->data, p, fh->size); | |
119 | return p + XDR_QUADLEN(fh->size); | |
120 | } | |
121 | return NULL; | |
122 | } | |
123 | ||
124 | /* | |
125 | * Encode/decode time. | |
126 | */ | |
d61005a6 AV |
127 | static inline __be32 * |
128 | xdr_encode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
129 | { |
130 | *p++ = htonl(timep->tv_sec); | |
131 | *p++ = htonl(timep->tv_nsec); | |
132 | return p; | |
133 | } | |
134 | ||
d61005a6 AV |
135 | static inline __be32 * |
136 | xdr_decode_time3(__be32 *p, struct timespec *timep) | |
1da177e4 LT |
137 | { |
138 | timep->tv_sec = ntohl(*p++); | |
139 | timep->tv_nsec = ntohl(*p++); | |
140 | return p; | |
141 | } | |
142 | ||
d61005a6 AV |
143 | static __be32 * |
144 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
145 | { |
146 | unsigned int type, major, minor; | |
bca79478 | 147 | umode_t fmode; |
1da177e4 LT |
148 | |
149 | type = ntohl(*p++); | |
bca79478 TM |
150 | if (type > NF3FIFO) |
151 | type = NF3NON; | |
152 | fmode = nfs_type2fmt[type]; | |
1da177e4 LT |
153 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; |
154 | fattr->nlink = ntohl(*p++); | |
155 | fattr->uid = ntohl(*p++); | |
156 | fattr->gid = ntohl(*p++); | |
157 | p = xdr_decode_hyper(p, &fattr->size); | |
158 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
159 | ||
160 | /* Turn remote device info into Linux-specific dev_t */ | |
161 | major = ntohl(*p++); | |
162 | minor = ntohl(*p++); | |
163 | fattr->rdev = MKDEV(major, minor); | |
164 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
165 | fattr->rdev = 0; | |
166 | ||
8b4bdcf8 TM |
167 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
168 | fattr->fsid.minor = 0; | |
1da177e4 LT |
169 | p = xdr_decode_hyper(p, &fattr->fileid); |
170 | p = xdr_decode_time3(p, &fattr->atime); | |
171 | p = xdr_decode_time3(p, &fattr->mtime); | |
172 | p = xdr_decode_time3(p, &fattr->ctime); | |
173 | ||
174 | /* Update the mode bits */ | |
9e6e70f8 | 175 | fattr->valid |= NFS_ATTR_FATTR_V3; |
1da177e4 LT |
176 | return p; |
177 | } | |
178 | ||
d61005a6 AV |
179 | static inline __be32 * |
180 | xdr_encode_sattr(__be32 *p, struct iattr *attr) | |
1da177e4 LT |
181 | { |
182 | if (attr->ia_valid & ATTR_MODE) { | |
183 | *p++ = xdr_one; | |
cf3fff54 | 184 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
185 | } else { |
186 | *p++ = xdr_zero; | |
187 | } | |
188 | if (attr->ia_valid & ATTR_UID) { | |
189 | *p++ = xdr_one; | |
190 | *p++ = htonl(attr->ia_uid); | |
191 | } else { | |
192 | *p++ = xdr_zero; | |
193 | } | |
194 | if (attr->ia_valid & ATTR_GID) { | |
195 | *p++ = xdr_one; | |
196 | *p++ = htonl(attr->ia_gid); | |
197 | } else { | |
198 | *p++ = xdr_zero; | |
199 | } | |
200 | if (attr->ia_valid & ATTR_SIZE) { | |
201 | *p++ = xdr_one; | |
202 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
203 | } else { | |
204 | *p++ = xdr_zero; | |
205 | } | |
206 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
207 | *p++ = xdr_two; | |
208 | p = xdr_encode_time3(p, &attr->ia_atime); | |
209 | } else if (attr->ia_valid & ATTR_ATIME) { | |
210 | *p++ = xdr_one; | |
211 | } else { | |
212 | *p++ = xdr_zero; | |
213 | } | |
214 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
215 | *p++ = xdr_two; | |
216 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
217 | } else if (attr->ia_valid & ATTR_MTIME) { | |
218 | *p++ = xdr_one; | |
219 | } else { | |
220 | *p++ = xdr_zero; | |
221 | } | |
222 | return p; | |
223 | } | |
224 | ||
d61005a6 AV |
225 | static inline __be32 * |
226 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
227 | { |
228 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
229 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
230 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
9e6e70f8 TM |
231 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
232 | | NFS_ATTR_FATTR_PREMTIME | |
233 | | NFS_ATTR_FATTR_PRECTIME; | |
1da177e4 LT |
234 | return p; |
235 | } | |
236 | ||
d61005a6 AV |
237 | static inline __be32 * |
238 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
239 | { |
240 | if (*p++) | |
241 | p = xdr_decode_fattr(p, fattr); | |
242 | return p; | |
243 | } | |
244 | ||
d61005a6 AV |
245 | static inline __be32 * |
246 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
247 | { |
248 | if (*p++) | |
249 | return xdr_decode_wcc_attr(p, fattr); | |
250 | return p; | |
251 | } | |
252 | ||
253 | ||
d61005a6 AV |
254 | static inline __be32 * |
255 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) | |
1da177e4 LT |
256 | { |
257 | p = xdr_decode_pre_op_attr(p, fattr); | |
258 | return xdr_decode_post_op_attr(p, fattr); | |
259 | } | |
260 | ||
261 | /* | |
262 | * NFS encode functions | |
263 | */ | |
264 | ||
265 | /* | |
266 | * Encode file handle argument | |
267 | */ | |
268 | static int | |
d61005a6 | 269 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
1da177e4 LT |
270 | { |
271 | p = xdr_encode_fhandle(p, fh); | |
272 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
273 | return 0; | |
274 | } | |
275 | ||
276 | /* | |
277 | * Encode SETATTR arguments | |
278 | */ | |
279 | static int | |
d61005a6 | 280 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
1da177e4 LT |
281 | { |
282 | p = xdr_encode_fhandle(p, args->fh); | |
283 | p = xdr_encode_sattr(p, args->sattr); | |
284 | *p++ = htonl(args->guard); | |
285 | if (args->guard) | |
286 | p = xdr_encode_time3(p, &args->guardtime); | |
287 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | /* | |
292 | * Encode directory ops argument | |
293 | */ | |
294 | static int | |
d61005a6 | 295 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
1da177e4 LT |
296 | { |
297 | p = xdr_encode_fhandle(p, args->fh); | |
298 | p = xdr_encode_array(p, args->name, args->len); | |
299 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
300 | return 0; | |
301 | } | |
302 | ||
4fdc17b2 TM |
303 | /* |
304 | * Encode REMOVE argument | |
305 | */ | |
306 | static int | |
307 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) | |
308 | { | |
309 | p = xdr_encode_fhandle(p, args->fh); | |
310 | p = xdr_encode_array(p, args->name.name, args->name.len); | |
311 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
312 | return 0; | |
313 | } | |
314 | ||
1da177e4 LT |
315 | /* |
316 | * Encode access() argument | |
317 | */ | |
318 | static int | |
d61005a6 | 319 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
1da177e4 LT |
320 | { |
321 | p = xdr_encode_fhandle(p, args->fh); | |
322 | *p++ = htonl(args->access); | |
323 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
324 | return 0; | |
325 | } | |
326 | ||
327 | /* | |
328 | * Arguments to a READ call. Since we read data directly into the page | |
329 | * cache, we also set up the reply iovec here so that iov[1] points | |
330 | * exactly to the page we want to fetch. | |
331 | */ | |
332 | static int | |
d61005a6 | 333 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
1da177e4 | 334 | { |
1be27f36 | 335 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
336 | unsigned int replen; |
337 | u32 count = args->count; | |
338 | ||
339 | p = xdr_encode_fhandle(p, args->fh); | |
340 | p = xdr_encode_hyper(p, args->offset); | |
341 | *p++ = htonl(count); | |
342 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
343 | ||
344 | /* Inline the page array */ | |
345 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
346 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
347 | args->pages, args->pgbase, count); | |
4f22ccc3 | 348 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
1da177e4 LT |
349 | return 0; |
350 | } | |
351 | ||
352 | /* | |
353 | * Write arguments. Splice the buffer to be written into the iovec. | |
354 | */ | |
355 | static int | |
d61005a6 | 356 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
357 | { |
358 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
359 | u32 count = args->count; | |
360 | ||
361 | p = xdr_encode_fhandle(p, args->fh); | |
362 | p = xdr_encode_hyper(p, args->offset); | |
363 | *p++ = htonl(count); | |
364 | *p++ = htonl(args->stable); | |
365 | *p++ = htonl(count); | |
366 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
367 | ||
368 | /* Copy the page array */ | |
369 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
4f22ccc3 | 370 | sndbuf->flags |= XDRBUF_WRITE; |
1da177e4 LT |
371 | return 0; |
372 | } | |
373 | ||
374 | /* | |
375 | * Encode CREATE arguments | |
376 | */ | |
377 | static int | |
d61005a6 | 378 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
1da177e4 LT |
379 | { |
380 | p = xdr_encode_fhandle(p, args->fh); | |
381 | p = xdr_encode_array(p, args->name, args->len); | |
382 | ||
383 | *p++ = htonl(args->createmode); | |
384 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
385 | *p++ = args->verifier[0]; | |
386 | *p++ = args->verifier[1]; | |
387 | } else | |
388 | p = xdr_encode_sattr(p, args->sattr); | |
389 | ||
390 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
391 | return 0; | |
392 | } | |
393 | ||
394 | /* | |
395 | * Encode MKDIR arguments | |
396 | */ | |
397 | static int | |
d61005a6 | 398 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
1da177e4 LT |
399 | { |
400 | p = xdr_encode_fhandle(p, args->fh); | |
401 | p = xdr_encode_array(p, args->name, args->len); | |
402 | p = xdr_encode_sattr(p, args->sattr); | |
403 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Encode SYMLINK arguments | |
409 | */ | |
410 | static int | |
d61005a6 | 411 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
1da177e4 LT |
412 | { |
413 | p = xdr_encode_fhandle(p, args->fromfh); | |
414 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
415 | p = xdr_encode_sattr(p, args->sattr); | |
94a6d753 | 416 | *p++ = htonl(args->pathlen); |
1da177e4 | 417 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
94a6d753 CL |
418 | |
419 | /* Copy the page */ | |
420 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); | |
1da177e4 LT |
421 | return 0; |
422 | } | |
423 | ||
424 | /* | |
425 | * Encode MKNOD arguments | |
426 | */ | |
427 | static int | |
d61005a6 | 428 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
1da177e4 LT |
429 | { |
430 | p = xdr_encode_fhandle(p, args->fh); | |
431 | p = xdr_encode_array(p, args->name, args->len); | |
432 | *p++ = htonl(args->type); | |
433 | p = xdr_encode_sattr(p, args->sattr); | |
434 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
435 | *p++ = htonl(MAJOR(args->rdev)); | |
436 | *p++ = htonl(MINOR(args->rdev)); | |
437 | } | |
438 | ||
439 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
440 | return 0; | |
441 | } | |
442 | ||
443 | /* | |
444 | * Encode RENAME arguments | |
445 | */ | |
446 | static int | |
d61005a6 | 447 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
1da177e4 LT |
448 | { |
449 | p = xdr_encode_fhandle(p, args->fromfh); | |
450 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
451 | p = xdr_encode_fhandle(p, args->tofh); | |
452 | p = xdr_encode_array(p, args->toname, args->tolen); | |
453 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
454 | return 0; | |
455 | } | |
456 | ||
457 | /* | |
458 | * Encode LINK arguments | |
459 | */ | |
460 | static int | |
d61005a6 | 461 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
1da177e4 LT |
462 | { |
463 | p = xdr_encode_fhandle(p, args->fromfh); | |
464 | p = xdr_encode_fhandle(p, args->tofh); | |
465 | p = xdr_encode_array(p, args->toname, args->tolen); | |
466 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | /* | |
471 | * Encode arguments to readdir call | |
472 | */ | |
473 | static int | |
d61005a6 | 474 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
1da177e4 | 475 | { |
1be27f36 | 476 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
477 | unsigned int replen; |
478 | u32 count = args->count; | |
479 | ||
480 | p = xdr_encode_fhandle(p, args->fh); | |
481 | p = xdr_encode_hyper(p, args->cookie); | |
482 | *p++ = args->verf[0]; | |
483 | *p++ = args->verf[1]; | |
484 | if (args->plus) { | |
485 | /* readdirplus: need dircount + buffer size. | |
486 | * We just make sure we make dircount big enough */ | |
487 | *p++ = htonl(count >> 3); | |
488 | } | |
489 | *p++ = htonl(count); | |
490 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
491 | ||
492 | /* Inline the page array */ | |
493 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
494 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
495 | return 0; | |
496 | } | |
497 | ||
498 | /* | |
499 | * Decode the result of a readdir call. | |
500 | * We just check for syntactical correctness. | |
501 | */ | |
502 | static int | |
d61005a6 | 503 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
1da177e4 LT |
504 | { |
505 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
506 | struct kvec *iov = rcvbuf->head; | |
507 | struct page **page; | |
c957c526 CL |
508 | size_t hdrlen; |
509 | u32 len, recvd, pglen; | |
643f8111 | 510 | int status, nr = 0; |
d61005a6 | 511 | __be32 *entry, *end, *kaddr; |
1da177e4 LT |
512 | |
513 | status = ntohl(*p++); | |
514 | /* Decode post_op_attrs */ | |
515 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
516 | if (status) | |
856dff3d | 517 | return nfs_stat_to_errno(status); |
1da177e4 LT |
518 | /* Decode verifier cookie */ |
519 | if (res->verf) { | |
520 | res->verf[0] = *p++; | |
521 | res->verf[1] = *p++; | |
522 | } else { | |
523 | p += 2; | |
524 | } | |
525 | ||
526 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
527 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 528 | dprintk("NFS: READDIR reply header overflowed:" |
c957c526 | 529 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
530 | return -errno_NFSERR_IO; |
531 | } else if (iov->iov_len != hdrlen) { | |
532 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
533 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
534 | } | |
535 | ||
536 | pglen = rcvbuf->page_len; | |
537 | recvd = rcvbuf->len - hdrlen; | |
538 | if (pglen > recvd) | |
539 | pglen = recvd; | |
540 | page = rcvbuf->pages; | |
d61005a6 AV |
541 | kaddr = p = kmap_atomic(*page, KM_USER0); |
542 | end = (__be32 *)((char *)p + pglen); | |
1da177e4 | 543 | entry = p; |
643f8111 JL |
544 | |
545 | /* Make sure the packet actually has a value_follows and EOF entry */ | |
546 | if ((entry + 1) > end) | |
547 | goto short_pkt; | |
548 | ||
549 | for (; *p++; nr++) { | |
1da177e4 LT |
550 | if (p + 3 > end) |
551 | goto short_pkt; | |
552 | p += 2; /* inode # */ | |
553 | len = ntohl(*p++); /* string length */ | |
554 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
555 | if (len > NFS3_MAXNAMLEN) { | |
c957c526 | 556 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
1da177e4 LT |
557 | len); |
558 | goto err_unmap; | |
559 | } | |
560 | ||
561 | if (res->plus) { | |
562 | /* post_op_attr */ | |
563 | if (p + 2 > end) | |
564 | goto short_pkt; | |
565 | if (*p++) { | |
566 | p += 21; | |
567 | if (p + 1 > end) | |
568 | goto short_pkt; | |
569 | } | |
570 | /* post_op_fh3 */ | |
571 | if (*p++) { | |
572 | if (p + 1 > end) | |
573 | goto short_pkt; | |
574 | len = ntohl(*p++); | |
575 | if (len > NFS3_FHSIZE) { | |
fe82a183 | 576 | dprintk("NFS: giant filehandle in " |
c957c526 | 577 | "readdir (len 0x%x)!\n", len); |
1da177e4 LT |
578 | goto err_unmap; |
579 | } | |
580 | p += XDR_QUADLEN(len); | |
581 | } | |
582 | } | |
583 | ||
584 | if (p + 2 > end) | |
585 | goto short_pkt; | |
586 | entry = p; | |
587 | } | |
643f8111 JL |
588 | |
589 | /* | |
590 | * Apparently some server sends responses that are a valid size, but | |
591 | * contain no entries, and have value_follows==0 and EOF==0. For | |
592 | * those, just set the EOF marker. | |
593 | */ | |
594 | if (!nr && entry[1] == 0) { | |
595 | dprintk("NFS: readdir reply truncated!\n"); | |
596 | entry[1] = 1; | |
597 | } | |
1da177e4 LT |
598 | out: |
599 | kunmap_atomic(kaddr, KM_USER0); | |
600 | return nr; | |
601 | short_pkt: | |
643f8111 JL |
602 | /* |
603 | * When we get a short packet there are 2 possibilities. We can | |
604 | * return an error, or fix up the response to look like a valid | |
605 | * response and return what we have so far. If there are no | |
606 | * entries and the packet was short, then return -EIO. If there | |
607 | * are valid entries in the response, return them and pretend that | |
608 | * the call was successful, but incomplete. The caller can retry the | |
609 | * readdir starting at the last cookie. | |
610 | */ | |
1da177e4 | 611 | entry[0] = entry[1] = 0; |
643f8111 JL |
612 | if (!nr) |
613 | nr = -errno_NFSERR_IO; | |
1da177e4 LT |
614 | goto out; |
615 | err_unmap: | |
616 | nr = -errno_NFSERR_IO; | |
617 | goto out; | |
618 | } | |
619 | ||
0dbb4c67 AV |
620 | __be32 * |
621 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) | |
1da177e4 LT |
622 | { |
623 | struct nfs_entry old = *entry; | |
624 | ||
625 | if (!*p++) { | |
626 | if (!*p) | |
627 | return ERR_PTR(-EAGAIN); | |
628 | entry->eof = 1; | |
629 | return ERR_PTR(-EBADCOOKIE); | |
630 | } | |
631 | ||
632 | p = xdr_decode_hyper(p, &entry->ino); | |
633 | entry->len = ntohl(*p++); | |
634 | entry->name = (const char *) p; | |
635 | p += XDR_QUADLEN(entry->len); | |
636 | entry->prev_cookie = entry->cookie; | |
637 | p = xdr_decode_hyper(p, &entry->cookie); | |
638 | ||
639 | if (plus) { | |
640 | entry->fattr->valid = 0; | |
641 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
642 | /* In fact, a post_op_fh3: */ | |
643 | if (*p++) { | |
644 | p = xdr_decode_fhandle(p, entry->fh); | |
645 | /* Ugh -- server reply was truncated */ | |
646 | if (p == NULL) { | |
647 | dprintk("NFS: FH truncated\n"); | |
648 | *entry = old; | |
649 | return ERR_PTR(-EAGAIN); | |
650 | } | |
651 | } else | |
652 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
653 | } | |
654 | ||
655 | entry->eof = !p[0] && p[1]; | |
656 | return p; | |
657 | } | |
658 | ||
659 | /* | |
660 | * Encode COMMIT arguments | |
661 | */ | |
662 | static int | |
d61005a6 | 663 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
1da177e4 LT |
664 | { |
665 | p = xdr_encode_fhandle(p, args->fh); | |
666 | p = xdr_encode_hyper(p, args->offset); | |
667 | *p++ = htonl(args->count); | |
668 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
669 | return 0; | |
670 | } | |
671 | ||
b7fa0554 AG |
672 | #ifdef CONFIG_NFS_V3_ACL |
673 | /* | |
674 | * Encode GETACL arguments | |
675 | */ | |
676 | static int | |
d61005a6 | 677 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
678 | struct nfs3_getaclargs *args) |
679 | { | |
1be27f36 | 680 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
b7fa0554 AG |
681 | unsigned int replen; |
682 | ||
683 | p = xdr_encode_fhandle(p, args->fh); | |
684 | *p++ = htonl(args->mask); | |
685 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
686 | ||
687 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
688 | /* Inline the page array */ | |
689 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
690 | ACL3_getaclres_sz) << 2; | |
691 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
692 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
693 | } | |
694 | return 0; | |
695 | } | |
696 | ||
697 | /* | |
698 | * Encode SETACL arguments | |
699 | */ | |
700 | static int | |
d61005a6 | 701 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
702 | struct nfs3_setaclargs *args) |
703 | { | |
704 | struct xdr_buf *buf = &req->rq_snd_buf; | |
ae46141f TM |
705 | unsigned int base; |
706 | int err; | |
b7fa0554 AG |
707 | |
708 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
709 | *p++ = htonl(args->mask); | |
ae46141f TM |
710 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
711 | base = req->rq_slen; | |
712 | ||
713 | if (args->npages != 0) | |
714 | xdr_encode_pages(buf, args->pages, 0, args->len); | |
715 | else | |
716 | req->rq_slen += args->len; | |
b7fa0554 AG |
717 | |
718 | err = nfsacl_encode(buf, base, args->inode, | |
719 | (args->mask & NFS_ACL) ? | |
720 | args->acl_access : NULL, 1, 0); | |
721 | if (err > 0) | |
722 | err = nfsacl_encode(buf, base + err, args->inode, | |
723 | (args->mask & NFS_DFACL) ? | |
724 | args->acl_default : NULL, 1, | |
725 | NFS_ACL_DEFAULT); | |
726 | return (err > 0) ? 0 : err; | |
727 | } | |
728 | #endif /* CONFIG_NFS_V3_ACL */ | |
729 | ||
1da177e4 LT |
730 | /* |
731 | * NFS XDR decode functions | |
732 | */ | |
733 | ||
734 | /* | |
735 | * Decode attrstat reply. | |
736 | */ | |
737 | static int | |
d61005a6 | 738 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
739 | { |
740 | int status; | |
741 | ||
742 | if ((status = ntohl(*p++))) | |
856dff3d | 743 | return nfs_stat_to_errno(status); |
1da177e4 LT |
744 | xdr_decode_fattr(p, fattr); |
745 | return 0; | |
746 | } | |
747 | ||
748 | /* | |
749 | * Decode status+wcc_data reply | |
750 | * SATTR, REMOVE, RMDIR | |
751 | */ | |
752 | static int | |
d61005a6 | 753 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
754 | { |
755 | int status; | |
756 | ||
757 | if ((status = ntohl(*p++))) | |
856dff3d | 758 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
759 | xdr_decode_wcc_data(p, fattr); |
760 | return status; | |
761 | } | |
762 | ||
4fdc17b2 TM |
763 | static int |
764 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) | |
765 | { | |
766 | return nfs3_xdr_wccstat(req, p, &res->dir_attr); | |
767 | } | |
768 | ||
1da177e4 LT |
769 | /* |
770 | * Decode LOOKUP reply | |
771 | */ | |
772 | static int | |
d61005a6 | 773 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
774 | { |
775 | int status; | |
776 | ||
777 | if ((status = ntohl(*p++))) { | |
856dff3d | 778 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
779 | } else { |
780 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
781 | return -errno_NFSERR_IO; | |
782 | p = xdr_decode_post_op_attr(p, res->fattr); | |
783 | } | |
784 | xdr_decode_post_op_attr(p, res->dir_attr); | |
785 | return status; | |
786 | } | |
787 | ||
788 | /* | |
789 | * Decode ACCESS reply | |
790 | */ | |
791 | static int | |
d61005a6 | 792 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
1da177e4 LT |
793 | { |
794 | int status = ntohl(*p++); | |
795 | ||
796 | p = xdr_decode_post_op_attr(p, res->fattr); | |
797 | if (status) | |
856dff3d | 798 | return nfs_stat_to_errno(status); |
1da177e4 LT |
799 | res->access = ntohl(*p++); |
800 | return 0; | |
801 | } | |
802 | ||
803 | static int | |
d61005a6 | 804 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
1da177e4 | 805 | { |
1be27f36 | 806 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
1da177e4 LT |
807 | unsigned int replen; |
808 | ||
809 | p = xdr_encode_fhandle(p, args->fh); | |
810 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
811 | ||
812 | /* Inline the page array */ | |
813 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
814 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
815 | return 0; | |
816 | } | |
817 | ||
818 | /* | |
819 | * Decode READLINK reply | |
820 | */ | |
821 | static int | |
d61005a6 | 822 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
1da177e4 LT |
823 | { |
824 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
825 | struct kvec *iov = rcvbuf->head; | |
c957c526 CL |
826 | size_t hdrlen; |
827 | u32 len, recvd; | |
1da177e4 LT |
828 | char *kaddr; |
829 | int status; | |
830 | ||
831 | status = ntohl(*p++); | |
832 | p = xdr_decode_post_op_attr(p, fattr); | |
833 | ||
834 | if (status != 0) | |
856dff3d | 835 | return nfs_stat_to_errno(status); |
1da177e4 LT |
836 | |
837 | /* Convert length of symlink */ | |
838 | len = ntohl(*p++); | |
c957c526 | 839 | if (len >= rcvbuf->page_len) { |
fe82a183 | 840 | dprintk("nfs: server returned giant symlink!\n"); |
1da177e4 LT |
841 | return -ENAMETOOLONG; |
842 | } | |
843 | ||
844 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
845 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 846 | dprintk("NFS: READLINK reply header overflowed:" |
c957c526 | 847 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
848 | return -errno_NFSERR_IO; |
849 | } else if (iov->iov_len != hdrlen) { | |
fe82a183 CL |
850 | dprintk("NFS: READLINK header is short. " |
851 | "iovec will be shifted.\n"); | |
1da177e4 LT |
852 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
853 | } | |
854 | recvd = req->rq_rcv_buf.len - hdrlen; | |
855 | if (recvd < len) { | |
fe82a183 | 856 | dprintk("NFS: server cheating in readlink reply: " |
1da177e4 LT |
857 | "count %u > recvd %u\n", len, recvd); |
858 | return -EIO; | |
859 | } | |
860 | ||
861 | /* NULL terminate the string we got */ | |
862 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
863 | kaddr[len+rcvbuf->page_base] = '\0'; | |
864 | kunmap_atomic(kaddr, KM_USER0); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | /* | |
869 | * Decode READ reply | |
870 | */ | |
871 | static int | |
d61005a6 | 872 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
1da177e4 LT |
873 | { |
874 | struct kvec *iov = req->rq_rcv_buf.head; | |
c957c526 CL |
875 | size_t hdrlen; |
876 | u32 count, ocount, recvd; | |
877 | int status; | |
1da177e4 LT |
878 | |
879 | status = ntohl(*p++); | |
880 | p = xdr_decode_post_op_attr(p, res->fattr); | |
881 | ||
882 | if (status != 0) | |
856dff3d | 883 | return nfs_stat_to_errno(status); |
1da177e4 | 884 | |
c957c526 | 885 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
1da177e4 LT |
886 | * in that it puts the count both in the res struct and in the |
887 | * opaque data count. */ | |
888 | count = ntohl(*p++); | |
889 | res->eof = ntohl(*p++); | |
890 | ocount = ntohl(*p++); | |
891 | ||
892 | if (ocount != count) { | |
fe82a183 | 893 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
1da177e4 LT |
894 | return -errno_NFSERR_IO; |
895 | } | |
896 | ||
897 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
898 | if (iov->iov_len < hdrlen) { | |
fe82a183 | 899 | dprintk("NFS: READ reply header overflowed:" |
c957c526 | 900 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
1da177e4 LT |
901 | return -errno_NFSERR_IO; |
902 | } else if (iov->iov_len != hdrlen) { | |
903 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
904 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
905 | } | |
906 | ||
907 | recvd = req->rq_rcv_buf.len - hdrlen; | |
908 | if (count > recvd) { | |
fe82a183 | 909 | dprintk("NFS: server cheating in read reply: " |
c957c526 | 910 | "count %u > recvd %u\n", count, recvd); |
1da177e4 LT |
911 | count = recvd; |
912 | res->eof = 0; | |
913 | } | |
914 | ||
915 | if (count < res->count) | |
916 | res->count = count; | |
917 | ||
918 | return count; | |
919 | } | |
920 | ||
921 | /* | |
922 | * Decode WRITE response | |
923 | */ | |
924 | static int | |
d61005a6 | 925 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
926 | { |
927 | int status; | |
928 | ||
929 | status = ntohl(*p++); | |
930 | p = xdr_decode_wcc_data(p, res->fattr); | |
931 | ||
932 | if (status != 0) | |
856dff3d | 933 | return nfs_stat_to_errno(status); |
1da177e4 LT |
934 | |
935 | res->count = ntohl(*p++); | |
936 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
937 | res->verf->verifier[0] = *p++; | |
938 | res->verf->verifier[1] = *p++; | |
939 | ||
940 | return res->count; | |
941 | } | |
942 | ||
943 | /* | |
944 | * Decode a CREATE response | |
945 | */ | |
946 | static int | |
d61005a6 | 947 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
1da177e4 LT |
948 | { |
949 | int status; | |
950 | ||
951 | status = ntohl(*p++); | |
952 | if (status == 0) { | |
953 | if (*p++) { | |
954 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
955 | return -errno_NFSERR_IO; | |
956 | p = xdr_decode_post_op_attr(p, res->fattr); | |
957 | } else { | |
958 | memset(res->fh, 0, sizeof(*res->fh)); | |
959 | /* Do decode post_op_attr but set it to NULL */ | |
960 | p = xdr_decode_post_op_attr(p, res->fattr); | |
961 | res->fattr->valid = 0; | |
962 | } | |
963 | } else { | |
856dff3d | 964 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
965 | } |
966 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
967 | return status; | |
968 | } | |
969 | ||
970 | /* | |
971 | * Decode RENAME reply | |
972 | */ | |
973 | static int | |
d61005a6 | 974 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
1da177e4 LT |
975 | { |
976 | int status; | |
977 | ||
978 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 979 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
980 | p = xdr_decode_wcc_data(p, res->fromattr); |
981 | p = xdr_decode_wcc_data(p, res->toattr); | |
982 | return status; | |
983 | } | |
984 | ||
985 | /* | |
986 | * Decode LINK reply | |
987 | */ | |
988 | static int | |
d61005a6 | 989 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
1da177e4 LT |
990 | { |
991 | int status; | |
992 | ||
993 | if ((status = ntohl(*p++)) != 0) | |
856dff3d | 994 | status = nfs_stat_to_errno(status); |
1da177e4 LT |
995 | p = xdr_decode_post_op_attr(p, res->fattr); |
996 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
997 | return status; | |
998 | } | |
999 | ||
1000 | /* | |
1001 | * Decode FSSTAT reply | |
1002 | */ | |
1003 | static int | |
d61005a6 | 1004 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
1da177e4 LT |
1005 | { |
1006 | int status; | |
1007 | ||
1008 | status = ntohl(*p++); | |
1009 | ||
1010 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1011 | if (status != 0) | |
856dff3d | 1012 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1013 | |
1014 | p = xdr_decode_hyper(p, &res->tbytes); | |
1015 | p = xdr_decode_hyper(p, &res->fbytes); | |
1016 | p = xdr_decode_hyper(p, &res->abytes); | |
1017 | p = xdr_decode_hyper(p, &res->tfiles); | |
1018 | p = xdr_decode_hyper(p, &res->ffiles); | |
1019 | p = xdr_decode_hyper(p, &res->afiles); | |
1020 | ||
1021 | /* ignore invarsec */ | |
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | /* | |
1026 | * Decode FSINFO reply | |
1027 | */ | |
1028 | static int | |
d61005a6 | 1029 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
1da177e4 LT |
1030 | { |
1031 | int status; | |
1032 | ||
1033 | status = ntohl(*p++); | |
1034 | ||
1035 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1036 | if (status != 0) | |
856dff3d | 1037 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1038 | |
1039 | res->rtmax = ntohl(*p++); | |
1040 | res->rtpref = ntohl(*p++); | |
1041 | res->rtmult = ntohl(*p++); | |
1042 | res->wtmax = ntohl(*p++); | |
1043 | res->wtpref = ntohl(*p++); | |
1044 | res->wtmult = ntohl(*p++); | |
1045 | res->dtpref = ntohl(*p++); | |
1046 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1047 | ||
1048 | /* ignore time_delta and properties */ | |
1049 | res->lease_time = 0; | |
1050 | return 0; | |
1051 | } | |
1052 | ||
1053 | /* | |
1054 | * Decode PATHCONF reply | |
1055 | */ | |
1056 | static int | |
d61005a6 | 1057 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
1da177e4 LT |
1058 | { |
1059 | int status; | |
1060 | ||
1061 | status = ntohl(*p++); | |
1062 | ||
1063 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1064 | if (status != 0) | |
856dff3d | 1065 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1066 | res->max_link = ntohl(*p++); |
1067 | res->max_namelen = ntohl(*p++); | |
1068 | ||
1069 | /* ignore remaining fields */ | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | /* | |
1074 | * Decode COMMIT reply | |
1075 | */ | |
1076 | static int | |
d61005a6 | 1077 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
1da177e4 LT |
1078 | { |
1079 | int status; | |
1080 | ||
1081 | status = ntohl(*p++); | |
1082 | p = xdr_decode_wcc_data(p, res->fattr); | |
1083 | if (status != 0) | |
856dff3d | 1084 | return nfs_stat_to_errno(status); |
1da177e4 LT |
1085 | |
1086 | res->verf->verifier[0] = *p++; | |
1087 | res->verf->verifier[1] = *p++; | |
1088 | return 0; | |
1089 | } | |
1090 | ||
b7fa0554 AG |
1091 | #ifdef CONFIG_NFS_V3_ACL |
1092 | /* | |
1093 | * Decode GETACL reply | |
1094 | */ | |
1095 | static int | |
d61005a6 | 1096 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
b7fa0554 AG |
1097 | struct nfs3_getaclres *res) |
1098 | { | |
1099 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1100 | int status = ntohl(*p++); | |
1101 | struct posix_acl **acl; | |
1102 | unsigned int *aclcnt; | |
1103 | int err, base; | |
1104 | ||
1105 | if (status != 0) | |
856dff3d | 1106 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1107 | p = xdr_decode_post_op_attr(p, res->fattr); |
1108 | res->mask = ntohl(*p++); | |
1109 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1110 | return -EINVAL; | |
1111 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1112 | ||
1113 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1114 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1115 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1116 | ||
1117 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1118 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1119 | if (err > 0) | |
1120 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1121 | return (err > 0) ? 0 : err; | |
1122 | } | |
1123 | ||
1124 | /* | |
1125 | * Decode setacl reply. | |
1126 | */ | |
1127 | static int | |
d61005a6 | 1128 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
b7fa0554 AG |
1129 | { |
1130 | int status = ntohl(*p++); | |
1131 | ||
1132 | if (status) | |
856dff3d | 1133 | return nfs_stat_to_errno(status); |
b7fa0554 AG |
1134 | xdr_decode_post_op_attr(p, fattr); |
1135 | return 0; | |
1136 | } | |
1137 | #endif /* CONFIG_NFS_V3_ACL */ | |
1138 | ||
1da177e4 LT |
1139 | #define PROC(proc, argtype, restype, timer) \ |
1140 | [NFS3PROC_##proc] = { \ | |
1141 | .p_proc = NFS3PROC_##proc, \ | |
1142 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1143 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
2bea90d4 CL |
1144 | .p_arglen = NFS3_##argtype##_sz, \ |
1145 | .p_replen = NFS3_##restype##_sz, \ | |
cc0175c1 CL |
1146 | .p_timer = timer, \ |
1147 | .p_statidx = NFS3PROC_##proc, \ | |
1148 | .p_name = #proc, \ | |
1da177e4 LT |
1149 | } |
1150 | ||
1151 | struct rpc_procinfo nfs3_procedures[] = { | |
1152 | PROC(GETATTR, fhandle, attrstat, 1), | |
1153 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1154 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1155 | PROC(ACCESS, accessargs, accessres, 1), | |
1156 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1157 | PROC(READ, readargs, readres, 3), | |
1158 | PROC(WRITE, writeargs, writeres, 4), | |
1159 | PROC(CREATE, createargs, createres, 0), | |
1160 | PROC(MKDIR, mkdirargs, createres, 0), | |
1161 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1162 | PROC(MKNOD, mknodargs, createres, 0), | |
4fdc17b2 | 1163 | PROC(REMOVE, removeargs, removeres, 0), |
1da177e4 LT |
1164 | PROC(RMDIR, diropargs, wccstat, 0), |
1165 | PROC(RENAME, renameargs, renameres, 0), | |
1166 | PROC(LINK, linkargs, linkres, 0), | |
1167 | PROC(READDIR, readdirargs, readdirres, 3), | |
1168 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1169 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1170 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1171 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1172 | PROC(COMMIT, commitargs, commitres, 5), | |
1173 | }; | |
1174 | ||
1175 | struct rpc_version nfs_version3 = { | |
1176 | .number = 3, | |
e8c96f8c | 1177 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1178 | .procs = nfs3_procedures |
1179 | }; | |
1180 | ||
b7fa0554 AG |
1181 | #ifdef CONFIG_NFS_V3_ACL |
1182 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1183 | [ACLPROC3_GETACL] = { | |
1184 | .p_proc = ACLPROC3_GETACL, | |
1185 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1186 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
2bea90d4 CL |
1187 | .p_arglen = ACL3_getaclargs_sz, |
1188 | .p_replen = ACL3_getaclres_sz, | |
b7fa0554 | 1189 | .p_timer = 1, |
cc0175c1 | 1190 | .p_name = "GETACL", |
b7fa0554 AG |
1191 | }, |
1192 | [ACLPROC3_SETACL] = { | |
1193 | .p_proc = ACLPROC3_SETACL, | |
1194 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1195 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
2bea90d4 CL |
1196 | .p_arglen = ACL3_setaclargs_sz, |
1197 | .p_replen = ACL3_setaclres_sz, | |
b7fa0554 | 1198 | .p_timer = 0, |
cc0175c1 | 1199 | .p_name = "SETACL", |
b7fa0554 AG |
1200 | }, |
1201 | }; | |
1202 | ||
1203 | struct rpc_version nfsacl_version3 = { | |
1204 | .number = 3, | |
1205 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1206 | sizeof(nfs3_acl_procedures[0]), | |
1207 | .procs = nfs3_acl_procedures, | |
1208 | }; | |
1209 | #endif /* CONFIG_NFS_V3_ACL */ |