]>
Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * XDR support for nfsd |
3 | * | |
4 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
5 | */ | |
6 | ||
3dadecce | 7 | #include "vfs.h" |
9a74af21 | 8 | #include "xdr.h" |
2e8138a2 | 9 | #include "auth.h" |
1da177e4 LT |
10 | |
11 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
12 | ||
1da177e4 LT |
13 | /* |
14 | * Mapping of S_IF* types to NFS file types | |
15 | */ | |
16 | static u32 nfs_ftypes[] = { | |
17 | NFNON, NFCHR, NFCHR, NFBAD, | |
18 | NFDIR, NFBAD, NFBLK, NFBAD, | |
19 | NFREG, NFBAD, NFLNK, NFBAD, | |
20 | NFSOCK, NFBAD, NFLNK, NFBAD, | |
21 | }; | |
22 | ||
23 | ||
24 | /* | |
25 | * XDR functions for basic NFS types | |
26 | */ | |
131a21c2 AV |
27 | static __be32 * |
28 | decode_fh(__be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
29 | { |
30 | fh_init(fhp, NFS_FHSIZE); | |
31 | memcpy(&fhp->fh_handle.fh_base, p, NFS_FHSIZE); | |
32 | fhp->fh_handle.fh_size = NFS_FHSIZE; | |
33 | ||
34 | /* FIXME: Look up export pointer here and verify | |
35 | * Sun Secure RPC if requested */ | |
36 | return p + (NFS_FHSIZE >> 2); | |
37 | } | |
38 | ||
a257cdd0 | 39 | /* Helper function for NFSv2 ACL code */ |
131a21c2 | 40 | __be32 *nfs2svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
41 | { |
42 | return decode_fh(p, fhp); | |
43 | } | |
44 | ||
3ee6f61c | 45 | static __be32 * |
131a21c2 | 46 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
47 | { |
48 | memcpy(p, &fhp->fh_handle.fh_base, NFS_FHSIZE); | |
49 | return p + (NFS_FHSIZE>> 2); | |
50 | } | |
51 | ||
52 | /* | |
53 | * Decode a file name and make sure that the path contains | |
54 | * no slashes or null bytes. | |
55 | */ | |
3ee6f61c | 56 | static __be32 * |
ee1a95b3 | 57 | decode_filename(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
58 | { |
59 | char *name; | |
ee1a95b3 | 60 | unsigned int i; |
1da177e4 LT |
61 | |
62 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXNAMLEN)) != NULL) { | |
63 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
64 | if (*name == '\0' || *name == '/') | |
65 | return NULL; | |
66 | } | |
67 | } | |
68 | ||
69 | return p; | |
70 | } | |
71 | ||
3ee6f61c | 72 | static __be32 * |
9c7544d3 | 73 | decode_pathname(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
74 | { |
75 | char *name; | |
9c7544d3 | 76 | unsigned int i; |
1da177e4 LT |
77 | |
78 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS_MAXPATHLEN)) != NULL) { | |
79 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
80 | if (*name == '\0') | |
81 | return NULL; | |
82 | } | |
83 | } | |
84 | ||
85 | return p; | |
86 | } | |
87 | ||
3ee6f61c | 88 | static __be32 * |
131a21c2 | 89 | decode_sattr(__be32 *p, struct iattr *iap) |
1da177e4 LT |
90 | { |
91 | u32 tmp, tmp1; | |
92 | ||
93 | iap->ia_valid = 0; | |
94 | ||
95 | /* Sun client bug compatibility check: some sun clients seem to | |
96 | * put 0xffff in the mode field when they mean 0xffffffff. | |
97 | * Quoting the 4.4BSD nfs server code: Nah nah nah nah na nah. | |
98 | */ | |
99 | if ((tmp = ntohl(*p++)) != (u32)-1 && tmp != 0xffff) { | |
100 | iap->ia_valid |= ATTR_MODE; | |
101 | iap->ia_mode = tmp; | |
102 | } | |
103 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
7c19723e EB |
104 | iap->ia_uid = make_kuid(&init_user_ns, tmp); |
105 | if (uid_valid(iap->ia_uid)) | |
106 | iap->ia_valid |= ATTR_UID; | |
1da177e4 LT |
107 | } |
108 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
7c19723e EB |
109 | iap->ia_gid = make_kgid(&init_user_ns, tmp); |
110 | if (gid_valid(iap->ia_gid)) | |
111 | iap->ia_valid |= ATTR_GID; | |
1da177e4 LT |
112 | } |
113 | if ((tmp = ntohl(*p++)) != (u32)-1) { | |
114 | iap->ia_valid |= ATTR_SIZE; | |
115 | iap->ia_size = tmp; | |
116 | } | |
117 | tmp = ntohl(*p++); tmp1 = ntohl(*p++); | |
118 | if (tmp != (u32)-1 && tmp1 != (u32)-1) { | |
119 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
120 | iap->ia_atime.tv_sec = tmp; | |
121 | iap->ia_atime.tv_nsec = tmp1 * 1000; | |
122 | } | |
123 | tmp = ntohl(*p++); tmp1 = ntohl(*p++); | |
124 | if (tmp != (u32)-1 && tmp1 != (u32)-1) { | |
125 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
126 | iap->ia_mtime.tv_sec = tmp; | |
127 | iap->ia_mtime.tv_nsec = tmp1 * 1000; | |
128 | /* | |
129 | * Passing the invalid value useconds=1000000 for mtime | |
130 | * is a Sun convention for "set both mtime and atime to | |
131 | * current server time". It's needed to make permissions | |
132 | * checks for the "touch" program across v2 mounts to | |
133 | * Solaris and Irix boxes work correctly. See description of | |
134 | * sattr in section 6.1 of "NFS Illustrated" by | |
135 | * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5 | |
136 | */ | |
137 | if (tmp1 == 1000000) | |
138 | iap->ia_valid &= ~(ATTR_ATIME_SET|ATTR_MTIME_SET); | |
139 | } | |
140 | return p; | |
141 | } | |
142 | ||
131a21c2 AV |
143 | static __be32 * |
144 | encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, | |
a334de28 | 145 | struct kstat *stat) |
1da177e4 | 146 | { |
1da177e4 | 147 | struct dentry *dentry = fhp->fh_dentry; |
1da177e4 LT |
148 | int type; |
149 | struct timespec time; | |
af6a4e28 | 150 | u32 f; |
1da177e4 | 151 | |
a334de28 | 152 | type = (stat->mode & S_IFMT); |
1da177e4 LT |
153 | |
154 | *p++ = htonl(nfs_ftypes[type >> 12]); | |
082f31a2 | 155 | *p++ = htonl((u32) stat->mode); |
a334de28 | 156 | *p++ = htonl((u32) stat->nlink); |
7c19723e EB |
157 | *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid)); |
158 | *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid)); | |
1da177e4 | 159 | |
a334de28 | 160 | if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) { |
1da177e4 LT |
161 | *p++ = htonl(NFS_MAXPATHLEN); |
162 | } else { | |
a334de28 | 163 | *p++ = htonl((u32) stat->size); |
1da177e4 | 164 | } |
a334de28 | 165 | *p++ = htonl((u32) stat->blksize); |
1da177e4 | 166 | if (S_ISCHR(type) || S_ISBLK(type)) |
a334de28 | 167 | *p++ = htonl(new_encode_dev(stat->rdev)); |
1da177e4 LT |
168 | else |
169 | *p++ = htonl(0xffffffff); | |
a334de28 | 170 | *p++ = htonl((u32) stat->blocks); |
af6a4e28 N |
171 | switch (fsid_source(fhp)) { |
172 | default: | |
173 | case FSIDSOURCE_DEV: | |
a334de28 | 174 | *p++ = htonl(new_encode_dev(stat->dev)); |
af6a4e28 N |
175 | break; |
176 | case FSIDSOURCE_FSID: | |
177 | *p++ = htonl((u32) fhp->fh_export->ex_fsid); | |
178 | break; | |
179 | case FSIDSOURCE_UUID: | |
180 | f = ((u32*)fhp->fh_export->ex_uuid)[0]; | |
181 | f ^= ((u32*)fhp->fh_export->ex_uuid)[1]; | |
182 | f ^= ((u32*)fhp->fh_export->ex_uuid)[2]; | |
183 | f ^= ((u32*)fhp->fh_export->ex_uuid)[3]; | |
184 | *p++ = htonl(f); | |
185 | break; | |
186 | } | |
a334de28 DS |
187 | *p++ = htonl((u32) stat->ino); |
188 | *p++ = htonl((u32) stat->atime.tv_sec); | |
189 | *p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0); | |
2b0143b5 | 190 | lease_get_mtime(d_inode(dentry), &time); |
1da177e4 LT |
191 | *p++ = htonl((u32) time.tv_sec); |
192 | *p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0); | |
a334de28 DS |
193 | *p++ = htonl((u32) stat->ctime.tv_sec); |
194 | *p++ = htonl(stat->ctime.tv_nsec ? stat->ctime.tv_nsec / 1000 : 0); | |
1da177e4 LT |
195 | |
196 | return p; | |
197 | } | |
198 | ||
a257cdd0 | 199 | /* Helper function for NFSv2 ACL code */ |
4f4a4fad | 200 | __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, struct kstat *stat) |
a257cdd0 | 201 | { |
4f4a4fad | 202 | return encode_fattr(rqstp, p, fhp, stat); |
a257cdd0 | 203 | } |
1da177e4 LT |
204 | |
205 | /* | |
206 | * XDR decode functions | |
207 | */ | |
208 | int | |
cc6acc20 | 209 | nfssvc_decode_void(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
210 | { |
211 | return xdr_argsize_check(rqstp, p); | |
212 | } | |
213 | ||
214 | int | |
cc6acc20 | 215 | nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 216 | { |
cc6acc20 CH |
217 | struct nfsd_fhandle *args = rqstp->rq_argp; |
218 | ||
d40aa337 BT |
219 | p = decode_fh(p, &args->fh); |
220 | if (!p) | |
1da177e4 LT |
221 | return 0; |
222 | return xdr_argsize_check(rqstp, p); | |
223 | } | |
224 | ||
225 | int | |
cc6acc20 | 226 | nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 227 | { |
cc6acc20 CH |
228 | struct nfsd_sattrargs *args = rqstp->rq_argp; |
229 | ||
072f62ed N |
230 | p = decode_fh(p, &args->fh); |
231 | if (!p) | |
1da177e4 | 232 | return 0; |
072f62ed | 233 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
234 | |
235 | return xdr_argsize_check(rqstp, p); | |
236 | } | |
237 | ||
238 | int | |
cc6acc20 | 239 | nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 240 | { |
cc6acc20 CH |
241 | struct nfsd_diropargs *args = rqstp->rq_argp; |
242 | ||
1da177e4 LT |
243 | if (!(p = decode_fh(p, &args->fh)) |
244 | || !(p = decode_filename(p, &args->name, &args->len))) | |
245 | return 0; | |
246 | ||
d28c442f | 247 | return xdr_argsize_check(rqstp, p); |
1da177e4 LT |
248 | } |
249 | ||
250 | int | |
cc6acc20 | 251 | nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 252 | { |
cc6acc20 | 253 | struct nfsd_readargs *args = rqstp->rq_argp; |
1da177e4 | 254 | unsigned int len; |
afc59400 | 255 | int v; |
d40aa337 BT |
256 | p = decode_fh(p, &args->fh); |
257 | if (!p) | |
1da177e4 LT |
258 | return 0; |
259 | ||
260 | args->offset = ntohl(*p++); | |
261 | len = args->count = ntohl(*p++); | |
262 | p++; /* totalcount - unused */ | |
263 | ||
3c7aa15d | 264 | len = min_t(unsigned int, len, NFSSVC_MAXBLKSIZE_V2); |
1da177e4 LT |
265 | |
266 | /* set up somewhere to store response. | |
267 | * We take pages, put them on reslist and include in iovec | |
268 | */ | |
269 | v=0; | |
270 | while (len > 0) { | |
afc59400 BF |
271 | struct page *p = *(rqstp->rq_next_page++); |
272 | ||
273 | rqstp->rq_vec[v].iov_base = page_address(p); | |
3c7aa15d | 274 | rqstp->rq_vec[v].iov_len = min_t(unsigned int, len, PAGE_SIZE); |
3cc03b16 | 275 | len -= rqstp->rq_vec[v].iov_len; |
1da177e4 LT |
276 | v++; |
277 | } | |
278 | args->vlen = v; | |
9512a16b | 279 | return xdr_argsize_check(rqstp, p); |
1da177e4 LT |
280 | } |
281 | ||
282 | int | |
cc6acc20 | 283 | nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 284 | { |
cc6acc20 | 285 | struct nfsd_writeargs *args = rqstp->rq_argp; |
f34b9568 | 286 | unsigned int len, hdr, dlen; |
db44bac4 | 287 | struct kvec *head = rqstp->rq_arg.head; |
1da177e4 | 288 | int v; |
f34b9568 | 289 | |
d40aa337 BT |
290 | p = decode_fh(p, &args->fh); |
291 | if (!p) | |
1da177e4 LT |
292 | return 0; |
293 | ||
294 | p++; /* beginoffset */ | |
295 | args->offset = ntohl(*p++); /* offset */ | |
296 | p++; /* totalcount */ | |
297 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
298 | /* |
299 | * The protocol specifies a maximum of 8192 bytes. | |
300 | */ | |
7adae489 | 301 | if (len > NFSSVC_MAXBLKSIZE_V2) |
f34b9568 PS |
302 | return 0; |
303 | ||
304 | /* | |
305 | * Check to make sure that we got the right number of | |
306 | * bytes. | |
f34b9568 | 307 | */ |
db44bac4 | 308 | hdr = (void*)p - head->iov_base; |
13bf9fbf BF |
309 | if (hdr > head->iov_len) |
310 | return 0; | |
db44bac4 | 311 | dlen = head->iov_len + rqstp->rq_arg.page_len - hdr; |
072f62ed | 312 | |
f34b9568 PS |
313 | /* |
314 | * Round the length of the data which was specified up to | |
315 | * the next multiple of XDR units and then compare that | |
316 | * against the length which was actually received. | |
ba67a39e N |
317 | * Note that when RPCSEC/GSS (for example) is used, the |
318 | * data buffer can be padded so dlen might be larger | |
319 | * than required. It must never be smaller. | |
f34b9568 | 320 | */ |
ba67a39e | 321 | if (dlen < XDR_QUADLEN(len)*4) |
f34b9568 PS |
322 | return 0; |
323 | ||
324 | rqstp->rq_vec[0].iov_base = (void*)p; | |
db44bac4 | 325 | rqstp->rq_vec[0].iov_len = head->iov_len - hdr; |
1da177e4 | 326 | v = 0; |
3cc03b16 N |
327 | while (len > rqstp->rq_vec[v].iov_len) { |
328 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 329 | v++; |
3cc03b16 N |
330 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
331 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 332 | } |
3cc03b16 | 333 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
334 | args->vlen = v + 1; |
335 | return 1; | |
1da177e4 LT |
336 | } |
337 | ||
338 | int | |
cc6acc20 | 339 | nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 340 | { |
cc6acc20 CH |
341 | struct nfsd_createargs *args = rqstp->rq_argp; |
342 | ||
072f62ed N |
343 | if ( !(p = decode_fh(p, &args->fh)) |
344 | || !(p = decode_filename(p, &args->name, &args->len))) | |
1da177e4 | 345 | return 0; |
072f62ed | 346 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
347 | |
348 | return xdr_argsize_check(rqstp, p); | |
349 | } | |
350 | ||
351 | int | |
cc6acc20 | 352 | nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 353 | { |
cc6acc20 CH |
354 | struct nfsd_renameargs *args = rqstp->rq_argp; |
355 | ||
1da177e4 LT |
356 | if (!(p = decode_fh(p, &args->ffh)) |
357 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
358 | || !(p = decode_fh(p, &args->tfh)) | |
359 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
360 | return 0; | |
361 | ||
362 | return xdr_argsize_check(rqstp, p); | |
363 | } | |
364 | ||
365 | int | |
cc6acc20 | 366 | nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 367 | { |
cc6acc20 CH |
368 | struct nfsd_readlinkargs *args = rqstp->rq_argp; |
369 | ||
d40aa337 BT |
370 | p = decode_fh(p, &args->fh); |
371 | if (!p) | |
1da177e4 | 372 | return 0; |
afc59400 | 373 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 | 374 | |
9512a16b | 375 | return xdr_argsize_check(rqstp, p); |
1da177e4 LT |
376 | } |
377 | ||
378 | int | |
cc6acc20 | 379 | nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 380 | { |
cc6acc20 CH |
381 | struct nfsd_linkargs *args = rqstp->rq_argp; |
382 | ||
1da177e4 LT |
383 | if (!(p = decode_fh(p, &args->ffh)) |
384 | || !(p = decode_fh(p, &args->tfh)) | |
385 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
386 | return 0; | |
387 | ||
388 | return xdr_argsize_check(rqstp, p); | |
389 | } | |
390 | ||
391 | int | |
cc6acc20 | 392 | nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 393 | { |
cc6acc20 CH |
394 | struct nfsd_symlinkargs *args = rqstp->rq_argp; |
395 | ||
072f62ed N |
396 | if ( !(p = decode_fh(p, &args->ffh)) |
397 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
398 | || !(p = decode_pathname(p, &args->tname, &args->tlen))) | |
1da177e4 | 399 | return 0; |
072f62ed | 400 | p = decode_sattr(p, &args->attrs); |
1da177e4 LT |
401 | |
402 | return xdr_argsize_check(rqstp, p); | |
403 | } | |
404 | ||
405 | int | |
cc6acc20 | 406 | nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 407 | { |
cc6acc20 CH |
408 | struct nfsd_readdirargs *args = rqstp->rq_argp; |
409 | ||
d40aa337 BT |
410 | p = decode_fh(p, &args->fh); |
411 | if (!p) | |
1da177e4 LT |
412 | return 0; |
413 | args->cookie = ntohl(*p++); | |
414 | args->count = ntohl(*p++); | |
3c7aa15d | 415 | args->count = min_t(u32, args->count, PAGE_SIZE); |
afc59400 | 416 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 | 417 | |
9512a16b | 418 | return xdr_argsize_check(rqstp, p); |
1da177e4 LT |
419 | } |
420 | ||
421 | /* | |
422 | * XDR encode functions | |
423 | */ | |
424 | int | |
d16d1867 | 425 | nfssvc_encode_void(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 LT |
426 | { |
427 | return xdr_ressize_check(rqstp, p); | |
428 | } | |
429 | ||
430 | int | |
d16d1867 | 431 | nfssvc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 432 | { |
d16d1867 CH |
433 | struct nfsd_attrstat *resp = rqstp->rq_resp; |
434 | ||
a334de28 | 435 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
436 | return xdr_ressize_check(rqstp, p); |
437 | } | |
438 | ||
439 | int | |
d16d1867 | 440 | nfssvc_encode_diropres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 441 | { |
d16d1867 CH |
442 | struct nfsd_diropres *resp = rqstp->rq_resp; |
443 | ||
1da177e4 | 444 | p = encode_fh(p, &resp->fh); |
a334de28 | 445 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
446 | return xdr_ressize_check(rqstp, p); |
447 | } | |
448 | ||
449 | int | |
d16d1867 | 450 | nfssvc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 451 | { |
d16d1867 CH |
452 | struct nfsd_readlinkres *resp = rqstp->rq_resp; |
453 | ||
1da177e4 LT |
454 | *p++ = htonl(resp->len); |
455 | xdr_ressize_check(rqstp, p); | |
456 | rqstp->rq_res.page_len = resp->len; | |
457 | if (resp->len & 3) { | |
458 | /* need to pad the tail */ | |
1da177e4 LT |
459 | rqstp->rq_res.tail[0].iov_base = p; |
460 | *p = 0; | |
461 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
462 | } | |
463 | return 1; | |
464 | } | |
465 | ||
466 | int | |
d16d1867 | 467 | nfssvc_encode_readres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 468 | { |
d16d1867 CH |
469 | struct nfsd_readres *resp = rqstp->rq_resp; |
470 | ||
a334de28 | 471 | p = encode_fattr(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
472 | *p++ = htonl(resp->count); |
473 | xdr_ressize_check(rqstp, p); | |
474 | ||
25985edc | 475 | /* now update rqstp->rq_res to reflect data as well */ |
1da177e4 LT |
476 | rqstp->rq_res.page_len = resp->count; |
477 | if (resp->count & 3) { | |
478 | /* need to pad the tail */ | |
1da177e4 LT |
479 | rqstp->rq_res.tail[0].iov_base = p; |
480 | *p = 0; | |
481 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count&3); | |
482 | } | |
483 | return 1; | |
484 | } | |
485 | ||
486 | int | |
d16d1867 | 487 | nfssvc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 488 | { |
d16d1867 CH |
489 | struct nfsd_readdirres *resp = rqstp->rq_resp; |
490 | ||
1da177e4 LT |
491 | xdr_ressize_check(rqstp, p); |
492 | p = resp->buffer; | |
493 | *p++ = 0; /* no more entries */ | |
494 | *p++ = htonl((resp->common.err == nfserr_eof)); | |
495 | rqstp->rq_res.page_len = (((unsigned long)p-1) & ~PAGE_MASK)+1; | |
496 | ||
497 | return 1; | |
498 | } | |
499 | ||
500 | int | |
d16d1867 | 501 | nfssvc_encode_statfsres(struct svc_rqst *rqstp, __be32 *p) |
1da177e4 | 502 | { |
d16d1867 | 503 | struct nfsd_statfsres *resp = rqstp->rq_resp; |
1da177e4 LT |
504 | struct kstatfs *stat = &resp->stats; |
505 | ||
7adae489 | 506 | *p++ = htonl(NFSSVC_MAXBLKSIZE_V2); /* max transfer size */ |
1da177e4 LT |
507 | *p++ = htonl(stat->f_bsize); |
508 | *p++ = htonl(stat->f_blocks); | |
509 | *p++ = htonl(stat->f_bfree); | |
510 | *p++ = htonl(stat->f_bavail); | |
511 | return xdr_ressize_check(rqstp, p); | |
512 | } | |
513 | ||
514 | int | |
a0ad13ef N |
515 | nfssvc_encode_entry(void *ccdv, const char *name, |
516 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 | 517 | { |
a0ad13ef | 518 | struct readdir_cd *ccd = ccdv; |
1da177e4 | 519 | struct nfsd_readdirres *cd = container_of(ccd, struct nfsd_readdirres, common); |
131a21c2 | 520 | __be32 *p = cd->buffer; |
1da177e4 LT |
521 | int buflen, slen; |
522 | ||
523 | /* | |
524 | dprintk("nfsd: entry(%.*s off %ld ino %ld)\n", | |
525 | namlen, name, offset, ino); | |
526 | */ | |
527 | ||
528 | if (offset > ~((u32) 0)) { | |
529 | cd->common.err = nfserr_fbig; | |
530 | return -EINVAL; | |
531 | } | |
532 | if (cd->offset) | |
533 | *cd->offset = htonl(offset); | |
1da177e4 | 534 | |
3c7aa15d KM |
535 | /* truncate filename */ |
536 | namlen = min(namlen, NFS2_MAXNAMLEN); | |
1da177e4 | 537 | slen = XDR_QUADLEN(namlen); |
3c7aa15d | 538 | |
1da177e4 LT |
539 | if ((buflen = cd->buflen - slen - 4) < 0) { |
540 | cd->common.err = nfserr_toosmall; | |
541 | return -EINVAL; | |
542 | } | |
40ee5dc6 PS |
543 | if (ino > ~((u32) 0)) { |
544 | cd->common.err = nfserr_fbig; | |
545 | return -EINVAL; | |
546 | } | |
1da177e4 LT |
547 | *p++ = xdr_one; /* mark entry present */ |
548 | *p++ = htonl((u32) ino); /* file id */ | |
549 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
550 | cd->offset = p; /* remember pointer */ | |
131a21c2 | 551 | *p++ = htonl(~0U); /* offset of next entry */ |
1da177e4 LT |
552 | |
553 | cd->buflen = buflen; | |
554 | cd->buffer = p; | |
555 | cd->common.err = nfs_ok; | |
556 | return 0; | |
557 | } | |
558 | ||
559 | /* | |
560 | * XDR release functions | |
561 | */ | |
1150ded8 CH |
562 | void |
563 | nfssvc_release_fhandle(struct svc_rqst *rqstp) | |
1da177e4 | 564 | { |
1150ded8 CH |
565 | struct nfsd_fhandle *resp = rqstp->rq_resp; |
566 | ||
1da177e4 | 567 | fh_put(&resp->fh); |
1da177e4 | 568 | } |