Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
f30c2269 | 2 | * linux/fs/nfsd/nfsxdr.c |
1da177e4 LT |
3 | * |
4 | * XDR support for nfsd | |
5 | * | |
6 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
7 | */ | |
8 | ||
1da177e4 | 9 | #include <linux/nfsd/xdr.h> |
2e8138a2 | 10 | #include "auth.h" |
1da177e4 LT |
11 | |
12 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
13 | ||
1da177e4 LT |
14 | /* |
15 | * Mapping of S_IF* types to NFS file types | |
16 | */ | |
17 | static u32 nfs_ftypes[] = { | |
18 | NFNON, NFCHR, NFCHR, NFBAD, | |
19 | NFDIR, NFBAD, NFBLK, NFBAD, | |
20 | NFREG, NFBAD, NFLNK, NFBAD, | |
21 | NFSOCK, NFBAD, NFLNK, NFBAD, | |
22 | }; | |
23 | ||
24 | ||
25 | /* | |
26 | * XDR functions for basic NFS types | |
27 | */ | |
131a21c2 AV |
28 | static __be32 * |
29 | decode_fh(__be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
30 | { |
31 | fh_init(fhp, NFS_FHSIZE); | |
32 | memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE); | |
33 | fhp->fh_handle.fh_size = NFS_FHSIZE; | |
34 | ||
35 | /* FIXME: Look up export pointer here and verify | |
36 | * Sun Secure RPC if requested */ | |
37 | return p + (NFS_FHSIZE >> 2); | |
38 | } | |
39 | ||
a257cdd0 | 40 | /* Helper function for NFSv2 ACL code */ |
131a21c2 | 41 | __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
42 | { |
43 | return decode_fh(p, fhp); | |
44 | } | |
45 | ||
3ee6f61c | 46 | static __be32 * |
131a21c2 | 47 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
48 | { |
49 | memcpy(p, &fhp->fh_handle.fh_base, NFS_FHSIZE); | |
50 | return p + (NFS_FHSIZE>> 2); | |
51 | } | |
52 | ||
53 | /* | |
54 | * Decode a file name and make sure that the path contains | |
55 | * no slashes or null bytes. | |
56 | */ | |
3ee6f61c | 57 | static __be32 * |
ee1a95b3 | 58 | decode_filename(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
59 | { |
60 | char *name; | |
ee1a95b3 | 61 | unsigned int i; |
1da177e4 LT |
62 | |
63 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXNAMLEN)) != NULL) { | |
64 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
65 | if (*name == '\0' || *name == '/') | |
66 | return NULL; | |
67 | } | |
68 | } | |
69 | ||
70 | return p; | |
71 | } | |
72 | ||
3ee6f61c | 73 | static __be32 * |
9c7544d3 | 74 | decode_pathname(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
75 | { |
76 | char *name; | |
9c7544d3 | 77 | unsigned int i; |
1da177e4 LT |
78 | |
79 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXPATHLEN)) != NULL) { | |
80 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
81 | if (*name == '\0') | |
82 | return NULL; | |
83 | } | |
84 | } | |
85 | ||
86 | return p; | |
87 | } | |
88 | ||
3ee6f61c | 89 | static __be32 * |
131a21c2 | 90 | decode_sattr(__be32 *p, struct iattr *iap) |
1da177e4 LT |
91 | { |
92 | u32 tmp, tmp1; | |
93 | ||
94 | iap->ia_valid = 0; | |
95 | ||
96 | /* Sun client bug compatibility check: some sun clients seem to | |
97 | * put 0xffff in the mode field when they mean 0xffffffff. | |
98 | * Quoting the 4.4BSD nfs server code: Nah nah nah nah na nah. | |
99 | */ | |
100 | if ((tmp = ntohl(*p++)) != (u32)-1 && tmp != 0xffff) { | |
101 | iap->ia_valid |= ATTR_MODE; | |
102 | iap->ia_mode = tmp; | |
103 | } | |
104 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
105 | iap->ia_valid |= ATTR_UID; | |
106 | iap->ia_uid = tmp; | |
107 | } | |
108 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
109 | iap->ia_valid |= ATTR_GID; | |
110 | iap->ia_gid = tmp; | |
111 | } | |
112 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
113 | iap->ia_valid |= ATTR_SIZE; | |
114 | iap->ia_size = tmp; | |
115 | } | |
116 | tmp = ntohl(*p++); tmp1 = ntohl(*p++); | |
117 | if (tmp != (u32)-1 && tmp1 != (u32)-1) { | |
118 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
119 | iap->ia_atime.tv_sec = tmp; | |
120 | iap->ia_atime.tv_nsec = tmp1 * 1000; | |
121 | } | |
122 | tmp = ntohl(*p++); tmp1 = ntohl(*p++); | |
123 | if (tmp != (u32)-1 && tmp1 != (u32)-1) { | |
124 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
125 | iap->ia_mtime.tv_sec = tmp; | |
126 | iap->ia_mtime.tv_nsec = tmp1 * 1000; | |
127 | /* | |
128 | * Passing the invalid value useconds=1000000 for mtime | |
129 | * is a Sun convention for "set both mtime and atime to | |
130 | * current server time". It's needed to make permissions | |
131 | * checks for the "touch" program across v2 mounts to | |
132 | * Solaris and Irix boxes work correctly. See description of | |
133 | * sattr in section 6.1 of "NFS Illustrated" by | |
134 | * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5 | |
135 | */ | |
136 | if (tmp1 == 1000000) | |
137 | iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET); | |
138 | } | |
139 | return p; | |
140 | } | |
141 | ||
131a21c2 AV |
142 | static __be32 * |
143 | encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, | |
a334de28 | 144 | struct kstat *stat) |
1da177e4 | 145 | { |
1da177e4 | 146 | struct dentry *dentry = fhp->fh_dentry; |
1da177e4 LT |
147 | int type; |
148 | struct timespec time; | |
af6a4e28 | 149 | u32 f; |
1da177e4 | 150 | |
a334de28 | 151 | type = (stat->mode & S_IFMT); |
1da177e4 LT |
152 | |
153 | *p++ = htonl(nfs_ftypes[type >> 12]); | |
a334de28 DS |
154 | *p++ = htonl((u32) stat->mode); |
155 | *p++ = htonl((u32) stat->nlink); | |
156 | *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid)); | |
157 | *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid)); | |
1da177e4 | 158 | |
a334de28 | 159 | if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) { |
1da177e4 LT |
160 | *p++ = htonl(NFS_MAXPATHLEN); |
161 | } else { | |
a334de28 | 162 | *p++ = htonl((u32) stat->size); |
1da177e4 | 163 | } |
a334de28 | 164 | *p++ = htonl((u32) stat->blksize); |
1da177e4 | 165 | if (S_ISCHR(type) || S_ISBLK(type)) |
a334de28 | 166 | *p++ = htonl(new_encode_dev(stat->rdev)); |
1da177e4 LT |
167 | else |
168 | *p++ = htonl(0xffffffff); | |
a334de28 | 169 | *p++ = htonl((u32) stat->blocks); |
af6a4e28 N |
170 | switch (fsid_source(fhp)) { |
171 | default: | |
172 | case FSIDSOURCE_DEV: | |
a334de28 | 173 | *p++ = htonl(new_encode_dev(stat->dev)); |
af6a4e28 N |
174 | break; |
175 | case FSIDSOURCE_FSID: | |
176 | *p++ = htonl((u32) fhp->fh_export->ex_fsid); | |
177 | break; | |
178 | case FSIDSOURCE_UUID: | |
179 | f = ((u32*)fhp->fh_export->ex_uuid)[0]; | |
180 | f ^= ((u32*)fhp->fh_export->ex_uuid)[1]; | |
181 | f ^= ((u32*)fhp->fh_export->ex_uuid)[2]; | |
182 | f ^= ((u32*)fhp->fh_export->ex_uuid)[3]; | |
183 | *p++ = htonl(f); | |
184 | break; | |
185 | } | |
a334de28 DS |
186 | *p++ = htonl((u32) stat->ino); |
187 | *p++ = htonl((u32) stat->atime.tv_sec); | |
188 | *p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0); | |
1da177e4 LT |
189 | lease_get_mtime(dentry->d_inode, &time); |
190 | *p++ = htonl((u32) time.tv_sec); | |
191 | *p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0); | |
a334de28 DS |
192 | *p++ = htonl((u32) stat->ctime.tv_sec); |
193 | *p++ = htonl(stat->ctime.tv_nsec ? stat->ctime.tv_nsec / 1000 : 0); | |
1da177e4 LT |
194 | |
195 | return p; | |
196 | } | |
197 | ||
a257cdd0 | 198 | /* Helper function for NFSv2 ACL code */ |
131a21c2 | 199 | __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
a257cdd0 | 200 | { |
a334de28 | 201 | struct kstat stat; |
54775491 | 202 | vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry, &stat); |
a334de28 | 203 | return encode_fattr(rqstp, p, fhp, &stat); |
a257cdd0 | 204 | } |
1da177e4 LT |
205 | |
206 | /* | |
207 | * XDR decode functions | |
208 | */ | |
209 | int | |
131a21c2 | 210 | nfssvc_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
211 | { |
212 | return xdr_argsize_check(rqstp, p); | |
213 | } | |
214 | ||
215 | int | |
131a21c2 | 216 | nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
217 | { |
218 | if (!(p = decode_fh(p, &args->fh))) | |
219 | return 0; | |
220 | return xdr_argsize_check(rqstp, p); | |
221 | } | |
222 | ||
223 | int | |
131a21c2 | 224 | nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
225 | struct nfsd_sattrargs *args) |
226 | { | |
072f62ed N |
227 | p = decode_fh(p, &args->fh); |
228 | if (!p) | |
1da177e4 | 229 | return 0; |
072f62ed | 230 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
231 | |
232 | return xdr_argsize_check(rqstp, p); | |
233 | } | |
234 | ||
235 | int | |
131a21c2 | 236 | nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
237 | struct nfsd_diropargs *args) |
238 | { | |
239 | if (!(p = decode_fh(p, &args->fh)) | |
240 | || !(p = decode_filename(p, &args->name, &args->len))) | |
241 | return 0; | |
242 | ||
243 | return xdr_argsize_check(rqstp, p); | |
244 | } | |
245 | ||
246 | int | |
131a21c2 | 247 | nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
248 | struct nfsd_readargs *args) |
249 | { | |
250 | unsigned int len; | |
251 | int v,pn; | |
252 | if (!(p = decode_fh(p, &args->fh))) | |
253 | return 0; | |
254 | ||
255 | args->offset = ntohl(*p++); | |
256 | len = args->count = ntohl(*p++); | |
257 | p++; /* totalcount - unused */ | |
258 | ||
7adae489 GB |
259 | if (len > NFSSVC_MAXBLKSIZE_V2) |
260 | len = NFSSVC_MAXBLKSIZE_V2; | |
1da177e4 LT |
261 | |
262 | /* set up somewhere to store response. | |
263 | * We take pages, put them on reslist and include in iovec | |
264 | */ | |
265 | v=0; | |
266 | while (len > 0) { | |
44524359 | 267 | pn = rqstp->rq_resused++; |
3cc03b16 N |
268 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]); |
269 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE?len:PAGE_SIZE; | |
270 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
271 | v++; |
272 | } | |
273 | args->vlen = v; | |
274 | return xdr_argsize_check(rqstp, p); | |
275 | } | |
276 | ||
277 | int | |
131a21c2 | 278 | nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
279 | struct nfsd_writeargs *args) |
280 | { | |
f34b9568 | 281 | unsigned int len, hdr, dlen; |
1da177e4 | 282 | int v; |
f34b9568 | 283 | |
1da177e4 LT |
284 | if (!(p = decode_fh(p, &args->fh))) |
285 | return 0; | |
286 | ||
287 | p++; /* beginoffset */ | |
288 | args->offset = ntohl(*p++); /* offset */ | |
289 | p++; /* totalcount */ | |
290 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
291 | /* |
292 | * The protocol specifies a maximum of 8192 bytes. | |
293 | */ | |
7adae489 | 294 | if (len > NFSSVC_MAXBLKSIZE_V2) |
f34b9568 PS |
295 | return 0; |
296 | ||
297 | /* | |
298 | * Check to make sure that we got the right number of | |
299 | * bytes. | |
f34b9568 PS |
300 | */ |
301 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; | |
072f62ed N |
302 | dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len |
303 | - hdr; | |
304 | ||
f34b9568 PS |
305 | /* |
306 | * Round the length of the data which was specified up to | |
307 | * the next multiple of XDR units and then compare that | |
308 | * against the length which was actually received. | |
ba67a39e N |
309 | * Note that when RPCSEC/GSS (for example) is used, the |
310 | * data buffer can be padded so dlen might be larger | |
311 | * than required. It must never be smaller. | |
f34b9568 | 312 | */ |
ba67a39e | 313 | if (dlen < XDR_QUADLEN(len)*4) |
f34b9568 PS |
314 | return 0; |
315 | ||
316 | rqstp->rq_vec[0].iov_base = (void*)p; | |
317 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
1da177e4 | 318 | v = 0; |
3cc03b16 N |
319 | while (len > rqstp->rq_vec[v].iov_len) { |
320 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 321 | v++; |
3cc03b16 N |
322 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
323 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 324 | } |
3cc03b16 | 325 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
326 | args->vlen = v + 1; |
327 | return 1; | |
1da177e4 LT |
328 | } |
329 | ||
330 | int | |
131a21c2 | 331 | nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
332 | struct nfsd_createargs *args) |
333 | { | |
072f62ed N |
334 | if ( !(p = decode_fh(p, &args->fh)) |
335 | || !(p = decode_filename(p, &args->name, &args->len))) | |
1da177e4 | 336 | return 0; |
072f62ed | 337 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
338 | |
339 | return xdr_argsize_check(rqstp, p); | |
340 | } | |
341 | ||
342 | int | |
131a21c2 | 343 | nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
344 | struct nfsd_renameargs *args) |
345 | { | |
346 | if (!(p = decode_fh(p, &args->ffh)) | |
347 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
348 | || !(p = decode_fh(p, &args->tfh)) | |
349 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
350 | return 0; | |
351 | ||
352 | return xdr_argsize_check(rqstp, p); | |
353 | } | |
354 | ||
355 | int | |
131a21c2 | 356 | nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readlinkargs *args) |
1da177e4 LT |
357 | { |
358 | if (!(p = decode_fh(p, &args->fh))) | |
359 | return 0; | |
44524359 | 360 | args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused++]); |
1da177e4 LT |
361 | |
362 | return xdr_argsize_check(rqstp, p); | |
363 | } | |
364 | ||
365 | int | |
131a21c2 | 366 | nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
367 | struct nfsd_linkargs *args) |
368 | { | |
369 | if (!(p = decode_fh(p, &args->ffh)) | |
370 | || !(p = decode_fh(p, &args->tfh)) | |
371 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
372 | return 0; | |
373 | ||
374 | return xdr_argsize_check(rqstp, p); | |
375 | } | |
376 | ||
377 | int | |
131a21c2 | 378 | nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
379 | struct nfsd_symlinkargs *args) |
380 | { | |
072f62ed N |
381 | if ( !(p = decode_fh(p, &args->ffh)) |
382 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
383 | || !(p = decode_pathname(p, &args->tname, &args->tlen))) | |
1da177e4 | 384 | return 0; |
072f62ed | 385 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
386 | |
387 | return xdr_argsize_check(rqstp, p); | |
388 | } | |
389 | ||
390 | int | |
131a21c2 | 391 | nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
392 | struct nfsd_readdirargs *args) |
393 | { | |
394 | if (!(p = decode_fh(p, &args->fh))) | |
395 | return 0; | |
396 | args->cookie = ntohl(*p++); | |
397 | args->count = ntohl(*p++); | |
398 | if (args->count > PAGE_SIZE) | |
399 | args->count = PAGE_SIZE; | |
400 | ||
44524359 | 401 | args->buffer = page_address(rqstp->rq_respages[rqstp->rq_resused++]); |
1da177e4 LT |
402 | |
403 | return xdr_argsize_check(rqstp, p); | |
404 | } | |
405 | ||
406 | /* | |
407 | * XDR encode functions | |
408 | */ | |
409 | int | |
131a21c2 | 410 | nfssvc_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
411 | { |
412 | return xdr_ressize_check(rqstp, p); | |
413 | } | |
414 | ||
415 | int | |
131a21c2 | 416 | nfssvc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
417 | struct nfsd_attrstat *resp) |
418 | { | |
a334de28 | 419 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
420 | return xdr_ressize_check(rqstp, p); |
421 | } | |
422 | ||
423 | int | |
131a21c2 | 424 | nfssvc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
425 | struct nfsd_diropres *resp) |
426 | { | |
427 | p = encode_fh(p, &resp->fh); | |
a334de28 | 428 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
429 | return xdr_ressize_check(rqstp, p); |
430 | } | |
431 | ||
432 | int | |
131a21c2 | 433 | nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
434 | struct nfsd_readlinkres *resp) |
435 | { | |
436 | *p++ = htonl(resp->len); | |
437 | xdr_ressize_check(rqstp, p); | |
438 | rqstp->rq_res.page_len = resp->len; | |
439 | if (resp->len & 3) { | |
440 | /* need to pad the tail */ | |
1da177e4 LT |
441 | rqstp->rq_res.tail[0].iov_base = p; |
442 | *p = 0; | |
443 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
444 | } | |
445 | return 1; | |
446 | } | |
447 | ||
448 | int | |
131a21c2 | 449 | nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
450 | struct nfsd_readres *resp) |
451 | { | |
a334de28 | 452 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
453 | *p++ = htonl(resp->count); |
454 | xdr_ressize_check(rqstp, p); | |
455 | ||
456 | /* now update rqstp->rq_res to reflect data aswell */ | |
457 | rqstp->rq_res.page_len = resp->count; | |
458 | if (resp->count & 3) { | |
459 | /* need to pad the tail */ | |
1da177e4 LT |
460 | rqstp->rq_res.tail[0].iov_base = p; |
461 | *p = 0; | |
462 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3); | |
463 | } | |
464 | return 1; | |
465 | } | |
466 | ||
467 | int | |
131a21c2 | 468 | nfssvc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
469 | struct nfsd_readdirres *resp) |
470 | { | |
471 | xdr_ressize_check(rqstp, p); | |
472 | p = resp->buffer; | |
473 | *p++ = 0; /* no more entries */ | |
474 | *p++ = htonl((resp->common.err == nfserr_eof)); | |
475 | rqstp->rq_res.page_len = (((unsigned long)p-1) & ~PAGE_MASK)+1; | |
476 | ||
477 | return 1; | |
478 | } | |
479 | ||
480 | int | |
131a21c2 | 481 | nfssvc_encode_statfsres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
482 | struct nfsd_statfsres *resp) |
483 | { | |
484 | struct kstatfs *stat = &resp->stats; | |
485 | ||
7adae489 | 486 | *p++ = htonl(NFSSVC_MAXBLKSIZE_V2); /* max transfer size */ |
1da177e4 LT |
487 | *p++ = htonl(stat->f_bsize); |
488 | *p++ = htonl(stat->f_blocks); | |
489 | *p++ = htonl(stat->f_bfree); | |
490 | *p++ = htonl(stat->f_bavail); | |
491 | return xdr_ressize_check(rqstp, p); | |
492 | } | |
493 | ||
494 | int | |
a0ad13ef N |
495 | nfssvc_encode_entry(void *ccdv, const char *name, |
496 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 497 | { |
a0ad13ef | 498 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 499 | struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common); |
131a21c2 | 500 | __be32 *p = cd->buffer; |
1da177e4 LT |
501 | int buflen, slen; |
502 | ||
503 | /* | |
504 | dprintk("nfsd: entry(%.*s off %ld ino %ld)\n", | |
505 | namlen, name, offset, ino); | |
506 | */ | |
507 | ||
508 | if (offset > ~((u32) 0)) { | |
509 | cd->common.err = nfserr_fbig; | |
510 | return -EINVAL; | |
511 | } | |
512 | if (cd->offset) | |
513 | *cd->offset = htonl(offset); | |
514 | if (namlen > NFS2_MAXNAMLEN) | |
515 | namlen = NFS2_MAXNAMLEN;/* truncate filename */ | |
516 | ||
517 | slen = XDR_QUADLEN(namlen); | |
518 | if ((buflen = cd->buflen - slen - 4) < 0) { | |
519 | cd->common.err = nfserr_toosmall; | |
520 | return -EINVAL; | |
521 | } | |
40ee5dc6 PS |
522 | if (ino > ~((u32) 0)) { |
523 | cd->common.err = nfserr_fbig; | |
524 | return -EINVAL; | |
525 | } | |
1da177e4 LT |
526 | *p++ = xdr_one; /* mark entry present */ |
527 | *p++ = htonl((u32) ino); /* file id */ | |
528 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
529 | cd->offset = p; /* remember pointer */ | |
131a21c2 | 530 | *p++ = htonl(~0U); /* offset of next entry */ |
1da177e4 LT |
531 | |
532 | cd->buflen = buflen; | |
533 | cd->buffer = p; | |
534 | cd->common.err = nfs_ok; | |
535 | return 0; | |
536 | } | |
537 | ||
538 | /* | |
539 | * XDR release functions | |
540 | */ | |
541 | int | |
131a21c2 | 542 | nfssvc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
543 | struct nfsd_fhandle *resp) |
544 | { | |
545 | fh_put(&resp->fh); | |
546 | return 1; | |
547 | } |