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> |
1da177e4 LT |
25 | |
26 | #define NFSDBG_FACILITY NFSDBG_XDR | |
27 | ||
28 | /* Mapping from NFS error code to "errno" error code. */ | |
29 | #define errno_NFSERR_IO EIO | |
30 | ||
31 | extern int nfs_stat_to_errno(int); | |
32 | ||
33 | /* | |
34 | * Declare the space requirements for NFS arguments and replies as | |
35 | * number of 32bit-words | |
36 | */ | |
37 | #define NFS3_fhandle_sz (1+16) | |
38 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ | |
39 | #define NFS3_sattr_sz (15) | |
40 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) | |
41 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) | |
42 | #define NFS3_fattr_sz (21) | |
43 | #define NFS3_wcc_attr_sz (6) | |
44 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) | |
45 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) | |
46 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) | |
47 | #define NFS3_fsstat_sz | |
48 | #define NFS3_fsinfo_sz | |
49 | #define NFS3_pathconf_sz | |
50 | #define NFS3_entry_sz (NFS3_filename_sz+3) | |
51 | ||
52 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) | |
53 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) | |
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) | |
60 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+NFS3_path_sz+NFS3_sattr_sz) | |
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) | |
69 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) | |
70 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) | |
71 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) | |
72 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) | |
73 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) | |
74 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
75 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) | |
76 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) | |
77 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) | |
78 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) | |
79 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) | |
80 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) | |
81 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) | |
82 | ||
b7fa0554 AG |
83 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
84 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3)) | |
85 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3)) | |
86 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) | |
87 | ||
1da177e4 LT |
88 | /* |
89 | * Map file type to S_IFMT bits | |
90 | */ | |
91 | static struct { | |
92 | unsigned int mode; | |
93 | unsigned int nfs2type; | |
94 | } nfs_type2fmt[] = { | |
95 | { 0, NFNON }, | |
96 | { S_IFREG, NFREG }, | |
97 | { S_IFDIR, NFDIR }, | |
98 | { S_IFBLK, NFBLK }, | |
99 | { S_IFCHR, NFCHR }, | |
100 | { S_IFLNK, NFLNK }, | |
101 | { S_IFSOCK, NFSOCK }, | |
102 | { S_IFIFO, NFFIFO }, | |
103 | { 0, NFBAD } | |
104 | }; | |
105 | ||
106 | /* | |
107 | * Common NFS XDR functions as inlines | |
108 | */ | |
109 | static inline u32 * | |
110 | xdr_encode_fhandle(u32 *p, struct nfs_fh *fh) | |
111 | { | |
112 | return xdr_encode_array(p, fh->data, fh->size); | |
113 | } | |
114 | ||
115 | static inline u32 * | |
116 | xdr_decode_fhandle(u32 *p, struct nfs_fh *fh) | |
117 | { | |
118 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { | |
119 | memcpy(fh->data, p, fh->size); | |
120 | return p + XDR_QUADLEN(fh->size); | |
121 | } | |
122 | return NULL; | |
123 | } | |
124 | ||
125 | /* | |
126 | * Encode/decode time. | |
127 | */ | |
128 | static inline u32 * | |
129 | xdr_encode_time3(u32 *p, struct timespec *timep) | |
130 | { | |
131 | *p++ = htonl(timep->tv_sec); | |
132 | *p++ = htonl(timep->tv_nsec); | |
133 | return p; | |
134 | } | |
135 | ||
136 | static inline u32 * | |
137 | xdr_decode_time3(u32 *p, struct timespec *timep) | |
138 | { | |
139 | timep->tv_sec = ntohl(*p++); | |
140 | timep->tv_nsec = ntohl(*p++); | |
141 | return p; | |
142 | } | |
143 | ||
144 | static u32 * | |
145 | xdr_decode_fattr(u32 *p, struct nfs_fattr *fattr) | |
146 | { | |
147 | unsigned int type, major, minor; | |
148 | int fmode; | |
149 | ||
150 | type = ntohl(*p++); | |
151 | if (type >= NF3BAD) | |
152 | type = NF3BAD; | |
153 | fmode = nfs_type2fmt[type].mode; | |
154 | fattr->type = nfs_type2fmt[type].nfs2type; | |
155 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; | |
156 | fattr->nlink = ntohl(*p++); | |
157 | fattr->uid = ntohl(*p++); | |
158 | fattr->gid = ntohl(*p++); | |
159 | p = xdr_decode_hyper(p, &fattr->size); | |
160 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); | |
161 | ||
162 | /* Turn remote device info into Linux-specific dev_t */ | |
163 | major = ntohl(*p++); | |
164 | minor = ntohl(*p++); | |
165 | fattr->rdev = MKDEV(major, minor); | |
166 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) | |
167 | fattr->rdev = 0; | |
168 | ||
8b4bdcf8 TM |
169 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
170 | fattr->fsid.minor = 0; | |
1da177e4 LT |
171 | p = xdr_decode_hyper(p, &fattr->fileid); |
172 | p = xdr_decode_time3(p, &fattr->atime); | |
173 | p = xdr_decode_time3(p, &fattr->mtime); | |
174 | p = xdr_decode_time3(p, &fattr->ctime); | |
175 | ||
176 | /* Update the mode bits */ | |
177 | fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3); | |
1da177e4 LT |
178 | return p; |
179 | } | |
180 | ||
181 | static inline u32 * | |
182 | xdr_encode_sattr(u32 *p, struct iattr *attr) | |
183 | { | |
184 | if (attr->ia_valid & ATTR_MODE) { | |
185 | *p++ = xdr_one; | |
cf3fff54 | 186 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
1da177e4 LT |
187 | } else { |
188 | *p++ = xdr_zero; | |
189 | } | |
190 | if (attr->ia_valid & ATTR_UID) { | |
191 | *p++ = xdr_one; | |
192 | *p++ = htonl(attr->ia_uid); | |
193 | } else { | |
194 | *p++ = xdr_zero; | |
195 | } | |
196 | if (attr->ia_valid & ATTR_GID) { | |
197 | *p++ = xdr_one; | |
198 | *p++ = htonl(attr->ia_gid); | |
199 | } else { | |
200 | *p++ = xdr_zero; | |
201 | } | |
202 | if (attr->ia_valid & ATTR_SIZE) { | |
203 | *p++ = xdr_one; | |
204 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); | |
205 | } else { | |
206 | *p++ = xdr_zero; | |
207 | } | |
208 | if (attr->ia_valid & ATTR_ATIME_SET) { | |
209 | *p++ = xdr_two; | |
210 | p = xdr_encode_time3(p, &attr->ia_atime); | |
211 | } else if (attr->ia_valid & ATTR_ATIME) { | |
212 | *p++ = xdr_one; | |
213 | } else { | |
214 | *p++ = xdr_zero; | |
215 | } | |
216 | if (attr->ia_valid & ATTR_MTIME_SET) { | |
217 | *p++ = xdr_two; | |
218 | p = xdr_encode_time3(p, &attr->ia_mtime); | |
219 | } else if (attr->ia_valid & ATTR_MTIME) { | |
220 | *p++ = xdr_one; | |
221 | } else { | |
222 | *p++ = xdr_zero; | |
223 | } | |
224 | return p; | |
225 | } | |
226 | ||
227 | static inline u32 * | |
228 | xdr_decode_wcc_attr(u32 *p, struct nfs_fattr *fattr) | |
229 | { | |
230 | p = xdr_decode_hyper(p, &fattr->pre_size); | |
231 | p = xdr_decode_time3(p, &fattr->pre_mtime); | |
232 | p = xdr_decode_time3(p, &fattr->pre_ctime); | |
233 | fattr->valid |= NFS_ATTR_WCC; | |
234 | return p; | |
235 | } | |
236 | ||
237 | static inline u32 * | |
238 | xdr_decode_post_op_attr(u32 *p, struct nfs_fattr *fattr) | |
239 | { | |
240 | if (*p++) | |
241 | p = xdr_decode_fattr(p, fattr); | |
242 | return p; | |
243 | } | |
244 | ||
245 | static inline u32 * | |
246 | xdr_decode_pre_op_attr(u32 *p, struct nfs_fattr *fattr) | |
247 | { | |
248 | if (*p++) | |
249 | return xdr_decode_wcc_attr(p, fattr); | |
250 | return p; | |
251 | } | |
252 | ||
253 | ||
254 | static inline u32 * | |
255 | xdr_decode_wcc_data(u32 *p, struct nfs_fattr *fattr) | |
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 | |
269 | nfs3_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs_fh *fh) | |
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 | |
280 | nfs3_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs3_sattrargs *args) | |
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 | |
295 | nfs3_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs3_diropargs *args) | |
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 | ||
303 | /* | |
304 | * Encode access() argument | |
305 | */ | |
306 | static int | |
307 | nfs3_xdr_accessargs(struct rpc_rqst *req, u32 *p, struct nfs3_accessargs *args) | |
308 | { | |
309 | p = xdr_encode_fhandle(p, args->fh); | |
310 | *p++ = htonl(args->access); | |
311 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
312 | return 0; | |
313 | } | |
314 | ||
315 | /* | |
316 | * Arguments to a READ call. Since we read data directly into the page | |
317 | * cache, we also set up the reply iovec here so that iov[1] points | |
318 | * exactly to the page we want to fetch. | |
319 | */ | |
320 | static int | |
321 | nfs3_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args) | |
322 | { | |
323 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
324 | unsigned int replen; | |
325 | u32 count = args->count; | |
326 | ||
327 | p = xdr_encode_fhandle(p, args->fh); | |
328 | p = xdr_encode_hyper(p, args->offset); | |
329 | *p++ = htonl(count); | |
330 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
331 | ||
332 | /* Inline the page array */ | |
333 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; | |
334 | xdr_inline_pages(&req->rq_rcv_buf, replen, | |
335 | args->pages, args->pgbase, count); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | /* | |
340 | * Write arguments. Splice the buffer to be written into the iovec. | |
341 | */ | |
342 | static int | |
343 | nfs3_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) | |
344 | { | |
345 | struct xdr_buf *sndbuf = &req->rq_snd_buf; | |
346 | u32 count = args->count; | |
347 | ||
348 | p = xdr_encode_fhandle(p, args->fh); | |
349 | p = xdr_encode_hyper(p, args->offset); | |
350 | *p++ = htonl(count); | |
351 | *p++ = htonl(args->stable); | |
352 | *p++ = htonl(count); | |
353 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); | |
354 | ||
355 | /* Copy the page array */ | |
356 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); | |
357 | return 0; | |
358 | } | |
359 | ||
360 | /* | |
361 | * Encode CREATE arguments | |
362 | */ | |
363 | static int | |
364 | nfs3_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs3_createargs *args) | |
365 | { | |
366 | p = xdr_encode_fhandle(p, args->fh); | |
367 | p = xdr_encode_array(p, args->name, args->len); | |
368 | ||
369 | *p++ = htonl(args->createmode); | |
370 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { | |
371 | *p++ = args->verifier[0]; | |
372 | *p++ = args->verifier[1]; | |
373 | } else | |
374 | p = xdr_encode_sattr(p, args->sattr); | |
375 | ||
376 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
377 | return 0; | |
378 | } | |
379 | ||
380 | /* | |
381 | * Encode MKDIR arguments | |
382 | */ | |
383 | static int | |
384 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_mkdirargs *args) | |
385 | { | |
386 | p = xdr_encode_fhandle(p, args->fh); | |
387 | p = xdr_encode_array(p, args->name, args->len); | |
388 | p = xdr_encode_sattr(p, args->sattr); | |
389 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | /* | |
394 | * Encode SYMLINK arguments | |
395 | */ | |
396 | static int | |
397 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_symlinkargs *args) | |
398 | { | |
399 | p = xdr_encode_fhandle(p, args->fromfh); | |
400 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
401 | p = xdr_encode_sattr(p, args->sattr); | |
402 | p = xdr_encode_array(p, args->topath, args->tolen); | |
403 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | /* | |
408 | * Encode MKNOD arguments | |
409 | */ | |
410 | static int | |
411 | nfs3_xdr_mknodargs(struct rpc_rqst *req, u32 *p, struct nfs3_mknodargs *args) | |
412 | { | |
413 | p = xdr_encode_fhandle(p, args->fh); | |
414 | p = xdr_encode_array(p, args->name, args->len); | |
415 | *p++ = htonl(args->type); | |
416 | p = xdr_encode_sattr(p, args->sattr); | |
417 | if (args->type == NF3CHR || args->type == NF3BLK) { | |
418 | *p++ = htonl(MAJOR(args->rdev)); | |
419 | *p++ = htonl(MINOR(args->rdev)); | |
420 | } | |
421 | ||
422 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
423 | return 0; | |
424 | } | |
425 | ||
426 | /* | |
427 | * Encode RENAME arguments | |
428 | */ | |
429 | static int | |
430 | nfs3_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs3_renameargs *args) | |
431 | { | |
432 | p = xdr_encode_fhandle(p, args->fromfh); | |
433 | p = xdr_encode_array(p, args->fromname, args->fromlen); | |
434 | p = xdr_encode_fhandle(p, args->tofh); | |
435 | p = xdr_encode_array(p, args->toname, args->tolen); | |
436 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
437 | return 0; | |
438 | } | |
439 | ||
440 | /* | |
441 | * Encode LINK arguments | |
442 | */ | |
443 | static int | |
444 | nfs3_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs3_linkargs *args) | |
445 | { | |
446 | p = xdr_encode_fhandle(p, args->fromfh); | |
447 | p = xdr_encode_fhandle(p, args->tofh); | |
448 | p = xdr_encode_array(p, args->toname, args->tolen); | |
449 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
450 | return 0; | |
451 | } | |
452 | ||
453 | /* | |
454 | * Encode arguments to readdir call | |
455 | */ | |
456 | static int | |
457 | nfs3_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_readdirargs *args) | |
458 | { | |
459 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
460 | unsigned int replen; | |
461 | u32 count = args->count; | |
462 | ||
463 | p = xdr_encode_fhandle(p, args->fh); | |
464 | p = xdr_encode_hyper(p, args->cookie); | |
465 | *p++ = args->verf[0]; | |
466 | *p++ = args->verf[1]; | |
467 | if (args->plus) { | |
468 | /* readdirplus: need dircount + buffer size. | |
469 | * We just make sure we make dircount big enough */ | |
470 | *p++ = htonl(count >> 3); | |
471 | } | |
472 | *p++ = htonl(count); | |
473 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
474 | ||
475 | /* Inline the page array */ | |
476 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; | |
477 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); | |
478 | return 0; | |
479 | } | |
480 | ||
481 | /* | |
482 | * Decode the result of a readdir call. | |
483 | * We just check for syntactical correctness. | |
484 | */ | |
485 | static int | |
486 | nfs3_xdr_readdirres(struct rpc_rqst *req, u32 *p, struct nfs3_readdirres *res) | |
487 | { | |
488 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
489 | struct kvec *iov = rcvbuf->head; | |
490 | struct page **page; | |
491 | int hdrlen, recvd; | |
492 | int status, nr; | |
493 | unsigned int len, pglen; | |
494 | u32 *entry, *end, *kaddr; | |
495 | ||
496 | status = ntohl(*p++); | |
497 | /* Decode post_op_attrs */ | |
498 | p = xdr_decode_post_op_attr(p, res->dir_attr); | |
499 | if (status) | |
500 | return -nfs_stat_to_errno(status); | |
501 | /* Decode verifier cookie */ | |
502 | if (res->verf) { | |
503 | res->verf[0] = *p++; | |
504 | res->verf[1] = *p++; | |
505 | } else { | |
506 | p += 2; | |
507 | } | |
508 | ||
509 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
510 | if (iov->iov_len < hdrlen) { | |
511 | printk(KERN_WARNING "NFS: READDIR reply header overflowed:" | |
512 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
513 | return -errno_NFSERR_IO; | |
514 | } else if (iov->iov_len != hdrlen) { | |
515 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); | |
516 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
517 | } | |
518 | ||
519 | pglen = rcvbuf->page_len; | |
520 | recvd = rcvbuf->len - hdrlen; | |
521 | if (pglen > recvd) | |
522 | pglen = recvd; | |
523 | page = rcvbuf->pages; | |
524 | kaddr = p = (u32 *)kmap_atomic(*page, KM_USER0); | |
525 | end = (u32 *)((char *)p + pglen); | |
526 | entry = p; | |
527 | for (nr = 0; *p++; nr++) { | |
528 | if (p + 3 > end) | |
529 | goto short_pkt; | |
530 | p += 2; /* inode # */ | |
531 | len = ntohl(*p++); /* string length */ | |
532 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ | |
533 | if (len > NFS3_MAXNAMLEN) { | |
534 | printk(KERN_WARNING "NFS: giant filename in readdir (len %x)!\n", | |
535 | len); | |
536 | goto err_unmap; | |
537 | } | |
538 | ||
539 | if (res->plus) { | |
540 | /* post_op_attr */ | |
541 | if (p + 2 > end) | |
542 | goto short_pkt; | |
543 | if (*p++) { | |
544 | p += 21; | |
545 | if (p + 1 > end) | |
546 | goto short_pkt; | |
547 | } | |
548 | /* post_op_fh3 */ | |
549 | if (*p++) { | |
550 | if (p + 1 > end) | |
551 | goto short_pkt; | |
552 | len = ntohl(*p++); | |
553 | if (len > NFS3_FHSIZE) { | |
554 | printk(KERN_WARNING "NFS: giant filehandle in " | |
555 | "readdir (len %x)!\n", len); | |
556 | goto err_unmap; | |
557 | } | |
558 | p += XDR_QUADLEN(len); | |
559 | } | |
560 | } | |
561 | ||
562 | if (p + 2 > end) | |
563 | goto short_pkt; | |
564 | entry = p; | |
565 | } | |
566 | if (!nr && (entry[0] != 0 || entry[1] == 0)) | |
567 | goto short_pkt; | |
568 | out: | |
569 | kunmap_atomic(kaddr, KM_USER0); | |
570 | return nr; | |
571 | short_pkt: | |
572 | entry[0] = entry[1] = 0; | |
573 | /* truncate listing ? */ | |
574 | if (!nr) { | |
575 | printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); | |
576 | entry[1] = 1; | |
577 | } | |
578 | goto out; | |
579 | err_unmap: | |
580 | nr = -errno_NFSERR_IO; | |
581 | goto out; | |
582 | } | |
583 | ||
584 | u32 * | |
585 | nfs3_decode_dirent(u32 *p, struct nfs_entry *entry, int plus) | |
586 | { | |
587 | struct nfs_entry old = *entry; | |
588 | ||
589 | if (!*p++) { | |
590 | if (!*p) | |
591 | return ERR_PTR(-EAGAIN); | |
592 | entry->eof = 1; | |
593 | return ERR_PTR(-EBADCOOKIE); | |
594 | } | |
595 | ||
596 | p = xdr_decode_hyper(p, &entry->ino); | |
597 | entry->len = ntohl(*p++); | |
598 | entry->name = (const char *) p; | |
599 | p += XDR_QUADLEN(entry->len); | |
600 | entry->prev_cookie = entry->cookie; | |
601 | p = xdr_decode_hyper(p, &entry->cookie); | |
602 | ||
603 | if (plus) { | |
604 | entry->fattr->valid = 0; | |
605 | p = xdr_decode_post_op_attr(p, entry->fattr); | |
606 | /* In fact, a post_op_fh3: */ | |
607 | if (*p++) { | |
608 | p = xdr_decode_fhandle(p, entry->fh); | |
609 | /* Ugh -- server reply was truncated */ | |
610 | if (p == NULL) { | |
611 | dprintk("NFS: FH truncated\n"); | |
612 | *entry = old; | |
613 | return ERR_PTR(-EAGAIN); | |
614 | } | |
615 | } else | |
616 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); | |
617 | } | |
618 | ||
619 | entry->eof = !p[0] && p[1]; | |
620 | return p; | |
621 | } | |
622 | ||
623 | /* | |
624 | * Encode COMMIT arguments | |
625 | */ | |
626 | static int | |
627 | nfs3_xdr_commitargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) | |
628 | { | |
629 | p = xdr_encode_fhandle(p, args->fh); | |
630 | p = xdr_encode_hyper(p, args->offset); | |
631 | *p++ = htonl(args->count); | |
632 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
633 | return 0; | |
634 | } | |
635 | ||
b7fa0554 AG |
636 | #ifdef CONFIG_NFS_V3_ACL |
637 | /* | |
638 | * Encode GETACL arguments | |
639 | */ | |
640 | static int | |
641 | nfs3_xdr_getaclargs(struct rpc_rqst *req, u32 *p, | |
642 | struct nfs3_getaclargs *args) | |
643 | { | |
644 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
645 | unsigned int replen; | |
646 | ||
647 | p = xdr_encode_fhandle(p, args->fh); | |
648 | *p++ = htonl(args->mask); | |
649 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
650 | ||
651 | if (args->mask & (NFS_ACL | NFS_DFACL)) { | |
652 | /* Inline the page array */ | |
653 | replen = (RPC_REPHDRSIZE + auth->au_rslack + | |
654 | ACL3_getaclres_sz) << 2; | |
655 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, | |
656 | NFSACL_MAXPAGES << PAGE_SHIFT); | |
657 | } | |
658 | return 0; | |
659 | } | |
660 | ||
661 | /* | |
662 | * Encode SETACL arguments | |
663 | */ | |
664 | static int | |
665 | nfs3_xdr_setaclargs(struct rpc_rqst *req, u32 *p, | |
666 | struct nfs3_setaclargs *args) | |
667 | { | |
668 | struct xdr_buf *buf = &req->rq_snd_buf; | |
669 | unsigned int base, len_in_head, len = nfsacl_size( | |
670 | (args->mask & NFS_ACL) ? args->acl_access : NULL, | |
671 | (args->mask & NFS_DFACL) ? args->acl_default : NULL); | |
672 | int count, err; | |
673 | ||
674 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); | |
675 | *p++ = htonl(args->mask); | |
676 | base = (char *)p - (char *)buf->head->iov_base; | |
677 | /* put as much of the acls into head as possible. */ | |
678 | len_in_head = min_t(unsigned int, buf->head->iov_len - base, len); | |
679 | len -= len_in_head; | |
21348425 | 680 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2)); |
b7fa0554 AG |
681 | |
682 | for (count = 0; (count << PAGE_SHIFT) < len; count++) { | |
683 | args->pages[count] = alloc_page(GFP_KERNEL); | |
684 | if (!args->pages[count]) { | |
685 | while (count) | |
686 | __free_page(args->pages[--count]); | |
687 | return -ENOMEM; | |
688 | } | |
689 | } | |
690 | xdr_encode_pages(buf, args->pages, 0, len); | |
691 | ||
692 | err = nfsacl_encode(buf, base, args->inode, | |
693 | (args->mask & NFS_ACL) ? | |
694 | args->acl_access : NULL, 1, 0); | |
695 | if (err > 0) | |
696 | err = nfsacl_encode(buf, base + err, args->inode, | |
697 | (args->mask & NFS_DFACL) ? | |
698 | args->acl_default : NULL, 1, | |
699 | NFS_ACL_DEFAULT); | |
700 | return (err > 0) ? 0 : err; | |
701 | } | |
702 | #endif /* CONFIG_NFS_V3_ACL */ | |
703 | ||
1da177e4 LT |
704 | /* |
705 | * NFS XDR decode functions | |
706 | */ | |
707 | ||
708 | /* | |
709 | * Decode attrstat reply. | |
710 | */ | |
711 | static int | |
712 | nfs3_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) | |
713 | { | |
714 | int status; | |
715 | ||
716 | if ((status = ntohl(*p++))) | |
717 | return -nfs_stat_to_errno(status); | |
718 | xdr_decode_fattr(p, fattr); | |
719 | return 0; | |
720 | } | |
721 | ||
722 | /* | |
723 | * Decode status+wcc_data reply | |
724 | * SATTR, REMOVE, RMDIR | |
725 | */ | |
726 | static int | |
727 | nfs3_xdr_wccstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) | |
728 | { | |
729 | int status; | |
730 | ||
731 | if ((status = ntohl(*p++))) | |
732 | status = -nfs_stat_to_errno(status); | |
733 | xdr_decode_wcc_data(p, fattr); | |
734 | return status; | |
735 | } | |
736 | ||
737 | /* | |
738 | * Decode LOOKUP reply | |
739 | */ | |
740 | static int | |
741 | nfs3_xdr_lookupres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) | |
742 | { | |
743 | int status; | |
744 | ||
745 | if ((status = ntohl(*p++))) { | |
746 | status = -nfs_stat_to_errno(status); | |
747 | } else { | |
748 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
749 | return -errno_NFSERR_IO; | |
750 | p = xdr_decode_post_op_attr(p, res->fattr); | |
751 | } | |
752 | xdr_decode_post_op_attr(p, res->dir_attr); | |
753 | return status; | |
754 | } | |
755 | ||
756 | /* | |
757 | * Decode ACCESS reply | |
758 | */ | |
759 | static int | |
760 | nfs3_xdr_accessres(struct rpc_rqst *req, u32 *p, struct nfs3_accessres *res) | |
761 | { | |
762 | int status = ntohl(*p++); | |
763 | ||
764 | p = xdr_decode_post_op_attr(p, res->fattr); | |
765 | if (status) | |
766 | return -nfs_stat_to_errno(status); | |
767 | res->access = ntohl(*p++); | |
768 | return 0; | |
769 | } | |
770 | ||
771 | static int | |
772 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_readlinkargs *args) | |
773 | { | |
774 | struct rpc_auth *auth = req->rq_task->tk_auth; | |
775 | unsigned int replen; | |
776 | ||
777 | p = xdr_encode_fhandle(p, args->fh); | |
778 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); | |
779 | ||
780 | /* Inline the page array */ | |
781 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; | |
782 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); | |
783 | return 0; | |
784 | } | |
785 | ||
786 | /* | |
787 | * Decode READLINK reply | |
788 | */ | |
789 | static int | |
790 | nfs3_xdr_readlinkres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) | |
791 | { | |
792 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; | |
793 | struct kvec *iov = rcvbuf->head; | |
794 | int hdrlen, len, recvd; | |
795 | char *kaddr; | |
796 | int status; | |
797 | ||
798 | status = ntohl(*p++); | |
799 | p = xdr_decode_post_op_attr(p, fattr); | |
800 | ||
801 | if (status != 0) | |
802 | return -nfs_stat_to_errno(status); | |
803 | ||
804 | /* Convert length of symlink */ | |
805 | len = ntohl(*p++); | |
806 | if (len >= rcvbuf->page_len || len <= 0) { | |
807 | dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); | |
808 | return -ENAMETOOLONG; | |
809 | } | |
810 | ||
811 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
812 | if (iov->iov_len < hdrlen) { | |
813 | printk(KERN_WARNING "NFS: READLINK reply header overflowed:" | |
814 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
815 | return -errno_NFSERR_IO; | |
816 | } else if (iov->iov_len != hdrlen) { | |
817 | dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); | |
818 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); | |
819 | } | |
820 | recvd = req->rq_rcv_buf.len - hdrlen; | |
821 | if (recvd < len) { | |
822 | printk(KERN_WARNING "NFS: server cheating in readlink reply: " | |
823 | "count %u > recvd %u\n", len, recvd); | |
824 | return -EIO; | |
825 | } | |
826 | ||
827 | /* NULL terminate the string we got */ | |
828 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); | |
829 | kaddr[len+rcvbuf->page_base] = '\0'; | |
830 | kunmap_atomic(kaddr, KM_USER0); | |
831 | return 0; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Decode READ reply | |
836 | */ | |
837 | static int | |
838 | nfs3_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res) | |
839 | { | |
840 | struct kvec *iov = req->rq_rcv_buf.head; | |
841 | int status, count, ocount, recvd, hdrlen; | |
842 | ||
843 | status = ntohl(*p++); | |
844 | p = xdr_decode_post_op_attr(p, res->fattr); | |
845 | ||
846 | if (status != 0) | |
847 | return -nfs_stat_to_errno(status); | |
848 | ||
849 | /* Decode reply could and EOF flag. NFSv3 is somewhat redundant | |
850 | * in that it puts the count both in the res struct and in the | |
851 | * opaque data count. */ | |
852 | count = ntohl(*p++); | |
853 | res->eof = ntohl(*p++); | |
854 | ocount = ntohl(*p++); | |
855 | ||
856 | if (ocount != count) { | |
857 | printk(KERN_WARNING "NFS: READ count doesn't match RPC opaque count.\n"); | |
858 | return -errno_NFSERR_IO; | |
859 | } | |
860 | ||
861 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; | |
862 | if (iov->iov_len < hdrlen) { | |
863 | printk(KERN_WARNING "NFS: READ reply header overflowed:" | |
864 | "length %d > %Zu\n", hdrlen, iov->iov_len); | |
865 | return -errno_NFSERR_IO; | |
866 | } else if (iov->iov_len != hdrlen) { | |
867 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); | |
868 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); | |
869 | } | |
870 | ||
871 | recvd = req->rq_rcv_buf.len - hdrlen; | |
872 | if (count > recvd) { | |
873 | printk(KERN_WARNING "NFS: server cheating in read reply: " | |
874 | "count %d > recvd %d\n", count, recvd); | |
875 | count = recvd; | |
876 | res->eof = 0; | |
877 | } | |
878 | ||
879 | if (count < res->count) | |
880 | res->count = count; | |
881 | ||
882 | return count; | |
883 | } | |
884 | ||
885 | /* | |
886 | * Decode WRITE response | |
887 | */ | |
888 | static int | |
889 | nfs3_xdr_writeres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) | |
890 | { | |
891 | int status; | |
892 | ||
893 | status = ntohl(*p++); | |
894 | p = xdr_decode_wcc_data(p, res->fattr); | |
895 | ||
896 | if (status != 0) | |
897 | return -nfs_stat_to_errno(status); | |
898 | ||
899 | res->count = ntohl(*p++); | |
900 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); | |
901 | res->verf->verifier[0] = *p++; | |
902 | res->verf->verifier[1] = *p++; | |
903 | ||
904 | return res->count; | |
905 | } | |
906 | ||
907 | /* | |
908 | * Decode a CREATE response | |
909 | */ | |
910 | static int | |
911 | nfs3_xdr_createres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) | |
912 | { | |
913 | int status; | |
914 | ||
915 | status = ntohl(*p++); | |
916 | if (status == 0) { | |
917 | if (*p++) { | |
918 | if (!(p = xdr_decode_fhandle(p, res->fh))) | |
919 | return -errno_NFSERR_IO; | |
920 | p = xdr_decode_post_op_attr(p, res->fattr); | |
921 | } else { | |
922 | memset(res->fh, 0, sizeof(*res->fh)); | |
923 | /* Do decode post_op_attr but set it to NULL */ | |
924 | p = xdr_decode_post_op_attr(p, res->fattr); | |
925 | res->fattr->valid = 0; | |
926 | } | |
927 | } else { | |
928 | status = -nfs_stat_to_errno(status); | |
929 | } | |
930 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
931 | return status; | |
932 | } | |
933 | ||
934 | /* | |
935 | * Decode RENAME reply | |
936 | */ | |
937 | static int | |
938 | nfs3_xdr_renameres(struct rpc_rqst *req, u32 *p, struct nfs3_renameres *res) | |
939 | { | |
940 | int status; | |
941 | ||
942 | if ((status = ntohl(*p++)) != 0) | |
943 | status = -nfs_stat_to_errno(status); | |
944 | p = xdr_decode_wcc_data(p, res->fromattr); | |
945 | p = xdr_decode_wcc_data(p, res->toattr); | |
946 | return status; | |
947 | } | |
948 | ||
949 | /* | |
950 | * Decode LINK reply | |
951 | */ | |
952 | static int | |
953 | nfs3_xdr_linkres(struct rpc_rqst *req, u32 *p, struct nfs3_linkres *res) | |
954 | { | |
955 | int status; | |
956 | ||
957 | if ((status = ntohl(*p++)) != 0) | |
958 | status = -nfs_stat_to_errno(status); | |
959 | p = xdr_decode_post_op_attr(p, res->fattr); | |
960 | p = xdr_decode_wcc_data(p, res->dir_attr); | |
961 | return status; | |
962 | } | |
963 | ||
964 | /* | |
965 | * Decode FSSTAT reply | |
966 | */ | |
967 | static int | |
968 | nfs3_xdr_fsstatres(struct rpc_rqst *req, u32 *p, struct nfs_fsstat *res) | |
969 | { | |
970 | int status; | |
971 | ||
972 | status = ntohl(*p++); | |
973 | ||
974 | p = xdr_decode_post_op_attr(p, res->fattr); | |
975 | if (status != 0) | |
976 | return -nfs_stat_to_errno(status); | |
977 | ||
978 | p = xdr_decode_hyper(p, &res->tbytes); | |
979 | p = xdr_decode_hyper(p, &res->fbytes); | |
980 | p = xdr_decode_hyper(p, &res->abytes); | |
981 | p = xdr_decode_hyper(p, &res->tfiles); | |
982 | p = xdr_decode_hyper(p, &res->ffiles); | |
983 | p = xdr_decode_hyper(p, &res->afiles); | |
984 | ||
985 | /* ignore invarsec */ | |
986 | return 0; | |
987 | } | |
988 | ||
989 | /* | |
990 | * Decode FSINFO reply | |
991 | */ | |
992 | static int | |
993 | nfs3_xdr_fsinfores(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) | |
994 | { | |
995 | int status; | |
996 | ||
997 | status = ntohl(*p++); | |
998 | ||
999 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1000 | if (status != 0) | |
1001 | return -nfs_stat_to_errno(status); | |
1002 | ||
1003 | res->rtmax = ntohl(*p++); | |
1004 | res->rtpref = ntohl(*p++); | |
1005 | res->rtmult = ntohl(*p++); | |
1006 | res->wtmax = ntohl(*p++); | |
1007 | res->wtpref = ntohl(*p++); | |
1008 | res->wtmult = ntohl(*p++); | |
1009 | res->dtpref = ntohl(*p++); | |
1010 | p = xdr_decode_hyper(p, &res->maxfilesize); | |
1011 | ||
1012 | /* ignore time_delta and properties */ | |
1013 | res->lease_time = 0; | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * Decode PATHCONF reply | |
1019 | */ | |
1020 | static int | |
1021 | nfs3_xdr_pathconfres(struct rpc_rqst *req, u32 *p, struct nfs_pathconf *res) | |
1022 | { | |
1023 | int status; | |
1024 | ||
1025 | status = ntohl(*p++); | |
1026 | ||
1027 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1028 | if (status != 0) | |
1029 | return -nfs_stat_to_errno(status); | |
1030 | res->max_link = ntohl(*p++); | |
1031 | res->max_namelen = ntohl(*p++); | |
1032 | ||
1033 | /* ignore remaining fields */ | |
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | /* | |
1038 | * Decode COMMIT reply | |
1039 | */ | |
1040 | static int | |
1041 | nfs3_xdr_commitres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) | |
1042 | { | |
1043 | int status; | |
1044 | ||
1045 | status = ntohl(*p++); | |
1046 | p = xdr_decode_wcc_data(p, res->fattr); | |
1047 | if (status != 0) | |
1048 | return -nfs_stat_to_errno(status); | |
1049 | ||
1050 | res->verf->verifier[0] = *p++; | |
1051 | res->verf->verifier[1] = *p++; | |
1052 | return 0; | |
1053 | } | |
1054 | ||
b7fa0554 AG |
1055 | #ifdef CONFIG_NFS_V3_ACL |
1056 | /* | |
1057 | * Decode GETACL reply | |
1058 | */ | |
1059 | static int | |
1060 | nfs3_xdr_getaclres(struct rpc_rqst *req, u32 *p, | |
1061 | struct nfs3_getaclres *res) | |
1062 | { | |
1063 | struct xdr_buf *buf = &req->rq_rcv_buf; | |
1064 | int status = ntohl(*p++); | |
1065 | struct posix_acl **acl; | |
1066 | unsigned int *aclcnt; | |
1067 | int err, base; | |
1068 | ||
1069 | if (status != 0) | |
1070 | return -nfs_stat_to_errno(status); | |
1071 | p = xdr_decode_post_op_attr(p, res->fattr); | |
1072 | res->mask = ntohl(*p++); | |
1073 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) | |
1074 | return -EINVAL; | |
1075 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; | |
1076 | ||
1077 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; | |
1078 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; | |
1079 | err = nfsacl_decode(buf, base, aclcnt, acl); | |
1080 | ||
1081 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; | |
1082 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; | |
1083 | if (err > 0) | |
1084 | err = nfsacl_decode(buf, base + err, aclcnt, acl); | |
1085 | return (err > 0) ? 0 : err; | |
1086 | } | |
1087 | ||
1088 | /* | |
1089 | * Decode setacl reply. | |
1090 | */ | |
1091 | static int | |
1092 | nfs3_xdr_setaclres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) | |
1093 | { | |
1094 | int status = ntohl(*p++); | |
1095 | ||
1096 | if (status) | |
1097 | return -nfs_stat_to_errno(status); | |
1098 | xdr_decode_post_op_attr(p, fattr); | |
1099 | return 0; | |
1100 | } | |
1101 | #endif /* CONFIG_NFS_V3_ACL */ | |
1102 | ||
1da177e4 LT |
1103 | #ifndef MAX |
1104 | # define MAX(a, b) (((a) > (b))? (a) : (b)) | |
1105 | #endif | |
1106 | ||
1107 | #define PROC(proc, argtype, restype, timer) \ | |
1108 | [NFS3PROC_##proc] = { \ | |
1109 | .p_proc = NFS3PROC_##proc, \ | |
1110 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ | |
1111 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ | |
1112 | .p_bufsiz = MAX(NFS3_##argtype##_sz,NFS3_##restype##_sz) << 2, \ | |
cc0175c1 CL |
1113 | .p_timer = timer, \ |
1114 | .p_statidx = NFS3PROC_##proc, \ | |
1115 | .p_name = #proc, \ | |
1da177e4 LT |
1116 | } |
1117 | ||
1118 | struct rpc_procinfo nfs3_procedures[] = { | |
1119 | PROC(GETATTR, fhandle, attrstat, 1), | |
1120 | PROC(SETATTR, sattrargs, wccstat, 0), | |
1121 | PROC(LOOKUP, diropargs, lookupres, 2), | |
1122 | PROC(ACCESS, accessargs, accessres, 1), | |
1123 | PROC(READLINK, readlinkargs, readlinkres, 3), | |
1124 | PROC(READ, readargs, readres, 3), | |
1125 | PROC(WRITE, writeargs, writeres, 4), | |
1126 | PROC(CREATE, createargs, createres, 0), | |
1127 | PROC(MKDIR, mkdirargs, createres, 0), | |
1128 | PROC(SYMLINK, symlinkargs, createres, 0), | |
1129 | PROC(MKNOD, mknodargs, createres, 0), | |
1130 | PROC(REMOVE, diropargs, wccstat, 0), | |
1131 | PROC(RMDIR, diropargs, wccstat, 0), | |
1132 | PROC(RENAME, renameargs, renameres, 0), | |
1133 | PROC(LINK, linkargs, linkres, 0), | |
1134 | PROC(READDIR, readdirargs, readdirres, 3), | |
1135 | PROC(READDIRPLUS, readdirargs, readdirres, 3), | |
1136 | PROC(FSSTAT, fhandle, fsstatres, 0), | |
1137 | PROC(FSINFO, fhandle, fsinfores, 0), | |
1138 | PROC(PATHCONF, fhandle, pathconfres, 0), | |
1139 | PROC(COMMIT, commitargs, commitres, 5), | |
1140 | }; | |
1141 | ||
1142 | struct rpc_version nfs_version3 = { | |
1143 | .number = 3, | |
e8c96f8c | 1144 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
1da177e4 LT |
1145 | .procs = nfs3_procedures |
1146 | }; | |
1147 | ||
b7fa0554 AG |
1148 | #ifdef CONFIG_NFS_V3_ACL |
1149 | static struct rpc_procinfo nfs3_acl_procedures[] = { | |
1150 | [ACLPROC3_GETACL] = { | |
1151 | .p_proc = ACLPROC3_GETACL, | |
1152 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, | |
1153 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, | |
1154 | .p_bufsiz = MAX(ACL3_getaclargs_sz, ACL3_getaclres_sz) << 2, | |
1155 | .p_timer = 1, | |
cc0175c1 | 1156 | .p_name = "GETACL", |
b7fa0554 AG |
1157 | }, |
1158 | [ACLPROC3_SETACL] = { | |
1159 | .p_proc = ACLPROC3_SETACL, | |
1160 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, | |
1161 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, | |
1162 | .p_bufsiz = MAX(ACL3_setaclargs_sz, ACL3_setaclres_sz) << 2, | |
1163 | .p_timer = 0, | |
cc0175c1 | 1164 | .p_name = "SETACL", |
b7fa0554 AG |
1165 | }, |
1166 | }; | |
1167 | ||
1168 | struct rpc_version nfsacl_version3 = { | |
1169 | .number = 3, | |
1170 | .nrprocs = sizeof(nfs3_acl_procedures)/ | |
1171 | sizeof(nfs3_acl_procedures[0]), | |
1172 | .procs = nfs3_acl_procedures, | |
1173 | }; | |
1174 | #endif /* CONFIG_NFS_V3_ACL */ |