Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * XDR support for nfsd/protocol version 3. |
3 | * | |
4 | * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> | |
5 | * | |
6 | * 2003-08-09 Jamie Lokier: Use htonl() for nanoseconds, not htons()! | |
7 | */ | |
8 | ||
1da177e4 | 9 | #include <linux/namei.h> |
b9c0ef85 | 10 | #include <linux/sunrpc/svc_xprt.h> |
9a74af21 | 11 | #include "xdr3.h" |
2e8138a2 | 12 | #include "auth.h" |
b9c0ef85 | 13 | #include "netns.h" |
3dadecce | 14 | #include "vfs.h" |
1da177e4 LT |
15 | |
16 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
17 | ||
1da177e4 LT |
18 | |
19 | /* | |
20 | * Mapping of S_IF* types to NFS file types | |
21 | */ | |
22 | static u32 nfs3_ftypes[] = { | |
23 | NF3NON, NF3FIFO, NF3CHR, NF3BAD, | |
24 | NF3DIR, NF3BAD, NF3BLK, NF3BAD, | |
25 | NF3REG, NF3BAD, NF3LNK, NF3BAD, | |
26 | NF3SOCK, NF3BAD, NF3LNK, NF3BAD, | |
27 | }; | |
28 | ||
29 | /* | |
30 | * XDR functions for basic NFS types | |
31 | */ | |
3ee6f61c | 32 | static __be32 * |
91f07168 | 33 | encode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
34 | { |
35 | *p++ = htonl((u32) time->tv_sec); *p++ = htonl(time->tv_nsec); | |
36 | return p; | |
37 | } | |
38 | ||
3ee6f61c | 39 | static __be32 * |
91f07168 | 40 | decode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
41 | { |
42 | time->tv_sec = ntohl(*p++); | |
43 | time->tv_nsec = ntohl(*p++); | |
44 | return p; | |
45 | } | |
46 | ||
3ee6f61c | 47 | static __be32 * |
91f07168 | 48 | decode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
49 | { |
50 | unsigned int size; | |
51 | fh_init(fhp, NFS3_FHSIZE); | |
52 | size = ntohl(*p++); | |
53 | if (size > NFS3_FHSIZE) | |
54 | return NULL; | |
55 | ||
56 | memcpy(&fhp->fh_handle.fh_base, p, size); | |
57 | fhp->fh_handle.fh_size = size; | |
58 | return p + XDR_QUADLEN(size); | |
59 | } | |
60 | ||
a257cdd0 | 61 | /* Helper function for NFSv3 ACL code */ |
91f07168 | 62 | __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
63 | { |
64 | return decode_fh(p, fhp); | |
65 | } | |
66 | ||
3ee6f61c | 67 | static __be32 * |
91f07168 | 68 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
69 | { |
70 | unsigned int size = fhp->fh_handle.fh_size; | |
71 | *p++ = htonl(size); | |
72 | if (size) p[XDR_QUADLEN(size)-1]=0; | |
73 | memcpy(p, &fhp->fh_handle.fh_base, size); | |
74 | return p + XDR_QUADLEN(size); | |
75 | } | |
76 | ||
77 | /* | |
78 | * Decode a file name and make sure that the path contains | |
79 | * no slashes or null bytes. | |
80 | */ | |
3ee6f61c | 81 | static __be32 * |
ee1a95b3 | 82 | decode_filename(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
83 | { |
84 | char *name; | |
ee1a95b3 | 85 | unsigned int i; |
1da177e4 LT |
86 | |
87 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { | |
88 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
89 | if (*name == '\0' || *name == '/') | |
90 | return NULL; | |
91 | } | |
92 | } | |
93 | ||
94 | return p; | |
95 | } | |
96 | ||
3ee6f61c | 97 | static __be32 * |
91f07168 | 98 | decode_sattr3(__be32 *p, struct iattr *iap) |
1da177e4 LT |
99 | { |
100 | u32 tmp; | |
101 | ||
102 | iap->ia_valid = 0; | |
103 | ||
104 | if (*p++) { | |
105 | iap->ia_valid |= ATTR_MODE; | |
106 | iap->ia_mode = ntohl(*p++); | |
107 | } | |
108 | if (*p++) { | |
458878a7 EB |
109 | iap->ia_uid = make_kuid(&init_user_ns, ntohl(*p++)); |
110 | if (uid_valid(iap->ia_uid)) | |
111 | iap->ia_valid |= ATTR_UID; | |
1da177e4 LT |
112 | } |
113 | if (*p++) { | |
458878a7 EB |
114 | iap->ia_gid = make_kgid(&init_user_ns, ntohl(*p++)); |
115 | if (gid_valid(iap->ia_gid)) | |
116 | iap->ia_valid |= ATTR_GID; | |
1da177e4 LT |
117 | } |
118 | if (*p++) { | |
119 | u64 newsize; | |
120 | ||
121 | iap->ia_valid |= ATTR_SIZE; | |
122 | p = xdr_decode_hyper(p, &newsize); | |
123 | if (newsize <= NFS_OFFSET_MAX) | |
124 | iap->ia_size = newsize; | |
125 | else | |
126 | iap->ia_size = NFS_OFFSET_MAX; | |
127 | } | |
128 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
129 | iap->ia_valid |= ATTR_ATIME; | |
130 | } else if (tmp == 2) { /* set to client time */ | |
131 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
132 | iap->ia_atime.tv_sec = ntohl(*p++); | |
133 | iap->ia_atime.tv_nsec = ntohl(*p++); | |
134 | } | |
135 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
136 | iap->ia_valid |= ATTR_MTIME; | |
137 | } else if (tmp == 2) { /* set to client time */ | |
138 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
139 | iap->ia_mtime.tv_sec = ntohl(*p++); | |
140 | iap->ia_mtime.tv_nsec = ntohl(*p++); | |
141 | } | |
142 | return p; | |
143 | } | |
144 | ||
af6a4e28 N |
145 | static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) |
146 | { | |
147 | u64 f; | |
148 | switch(fsid_source(fhp)) { | |
149 | default: | |
150 | case FSIDSOURCE_DEV: | |
151 | p = xdr_encode_hyper(p, (u64)huge_encode_dev | |
152 | (fhp->fh_dentry->d_inode->i_sb->s_dev)); | |
153 | break; | |
154 | case FSIDSOURCE_FSID: | |
155 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
156 | break; | |
157 | case FSIDSOURCE_UUID: | |
158 | f = ((u64*)fhp->fh_export->ex_uuid)[0]; | |
159 | f ^= ((u64*)fhp->fh_export->ex_uuid)[1]; | |
160 | p = xdr_encode_hyper(p, f); | |
161 | break; | |
162 | } | |
163 | return p; | |
164 | } | |
165 | ||
3ee6f61c | 166 | static __be32 * |
91f07168 | 167 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 168 | struct kstat *stat) |
1da177e4 | 169 | { |
a334de28 | 170 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
6e14b46b | 171 | *p++ = htonl((u32) (stat->mode & S_IALLUGO)); |
a334de28 | 172 | *p++ = htonl((u32) stat->nlink); |
458878a7 EB |
173 | *p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid)); |
174 | *p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid)); | |
a334de28 | 175 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { |
1da177e4 LT |
176 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
177 | } else { | |
a334de28 | 178 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 179 | } |
a334de28 DS |
180 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
181 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
182 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
af6a4e28 | 183 | p = encode_fsid(p, fhp); |
40ee5dc6 | 184 | p = xdr_encode_hyper(p, stat->ino); |
a334de28 | 185 | p = encode_time3(p, &stat->atime); |
40ee5dc6 | 186 | p = encode_time3(p, &stat->mtime); |
a334de28 | 187 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
188 | |
189 | return p; | |
190 | } | |
191 | ||
3ee6f61c | 192 | static __be32 * |
91f07168 | 193 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 | 194 | { |
1da177e4 LT |
195 | /* Attributes to follow */ |
196 | *p++ = xdr_one; | |
40ee5dc6 | 197 | return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr); |
1da177e4 LT |
198 | } |
199 | ||
200 | /* | |
201 | * Encode post-operation attributes. | |
202 | * The inode may be NULL if the call failed because of a stale file | |
203 | * handle. In this case, no attributes are returned. | |
204 | */ | |
91f07168 AV |
205 | static __be32 * |
206 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
207 | { |
208 | struct dentry *dentry = fhp->fh_dentry; | |
072f62ed | 209 | if (dentry && dentry->d_inode) { |
3dadecce | 210 | __be32 err; |
a334de28 DS |
211 | struct kstat stat; |
212 | ||
3dadecce | 213 | err = fh_getattr(fhp, &stat); |
a334de28 DS |
214 | if (!err) { |
215 | *p++ = xdr_one; /* attributes follow */ | |
40ee5dc6 | 216 | lease_get_mtime(dentry->d_inode, &stat.mtime); |
a334de28 DS |
217 | return encode_fattr3(rqstp, p, fhp, &stat); |
218 | } | |
1da177e4 LT |
219 | } |
220 | *p++ = xdr_zero; | |
221 | return p; | |
222 | } | |
223 | ||
a257cdd0 | 224 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
225 | __be32 * |
226 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
227 | { |
228 | return encode_post_op_attr(rqstp, p, fhp); | |
229 | } | |
230 | ||
1da177e4 LT |
231 | /* |
232 | * Enocde weak cache consistency data | |
233 | */ | |
91f07168 AV |
234 | static __be32 * |
235 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
236 | { |
237 | struct dentry *dentry = fhp->fh_dentry; | |
238 | ||
239 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
240 | if (fhp->fh_pre_saved) { | |
241 | *p++ = xdr_one; | |
242 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
243 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
244 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
245 | } else { | |
246 | *p++ = xdr_zero; | |
247 | } | |
248 | return encode_saved_post_attr(rqstp, p, fhp); | |
249 | } | |
250 | /* no pre- or post-attrs */ | |
251 | *p++ = xdr_zero; | |
252 | return encode_post_op_attr(rqstp, p, fhp); | |
253 | } | |
254 | ||
40ee5dc6 PS |
255 | /* |
256 | * Fill in the post_op attr for the wcc data | |
257 | */ | |
258 | void fill_post_wcc(struct svc_fh *fhp) | |
259 | { | |
3dadecce | 260 | __be32 err; |
40ee5dc6 PS |
261 | |
262 | if (fhp->fh_post_saved) | |
263 | printk("nfsd: inode locked twice during operation.\n"); | |
264 | ||
3dadecce | 265 | err = fh_getattr(fhp, &fhp->fh_post_attr); |
c654b8a9 | 266 | fhp->fh_post_change = fhp->fh_dentry->d_inode->i_version; |
c1ac3ffc | 267 | if (err) { |
40ee5dc6 | 268 | fhp->fh_post_saved = 0; |
c1ac3ffc NB |
269 | /* Grab the ctime anyway - set_change_info might use it */ |
270 | fhp->fh_post_attr.ctime = fhp->fh_dentry->d_inode->i_ctime; | |
271 | } else | |
40ee5dc6 PS |
272 | fhp->fh_post_saved = 1; |
273 | } | |
1da177e4 LT |
274 | |
275 | /* | |
276 | * XDR decode functions | |
277 | */ | |
278 | int | |
91f07168 | 279 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 | 280 | { |
d40aa337 BT |
281 | p = decode_fh(p, &args->fh); |
282 | if (!p) | |
1da177e4 LT |
283 | return 0; |
284 | return xdr_argsize_check(rqstp, p); | |
285 | } | |
286 | ||
287 | int | |
91f07168 | 288 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
289 | struct nfsd3_sattrargs *args) |
290 | { | |
d40aa337 BT |
291 | p = decode_fh(p, &args->fh); |
292 | if (!p) | |
1da177e4 | 293 | return 0; |
072f62ed | 294 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
295 | |
296 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
297 | struct timespec time; | |
298 | p = decode_time3(p, &time); | |
299 | args->guardtime = time.tv_sec; | |
300 | } | |
301 | ||
302 | return xdr_argsize_check(rqstp, p); | |
303 | } | |
304 | ||
305 | int | |
91f07168 | 306 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
307 | struct nfsd3_diropargs *args) |
308 | { | |
309 | if (!(p = decode_fh(p, &args->fh)) | |
310 | || !(p = decode_filename(p, &args->name, &args->len))) | |
311 | return 0; | |
312 | ||
313 | return xdr_argsize_check(rqstp, p); | |
314 | } | |
315 | ||
316 | int | |
91f07168 | 317 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
318 | struct nfsd3_accessargs *args) |
319 | { | |
d40aa337 BT |
320 | p = decode_fh(p, &args->fh); |
321 | if (!p) | |
1da177e4 LT |
322 | return 0; |
323 | args->access = ntohl(*p++); | |
324 | ||
325 | return xdr_argsize_check(rqstp, p); | |
326 | } | |
327 | ||
328 | int | |
91f07168 | 329 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
330 | struct nfsd3_readargs *args) |
331 | { | |
332 | unsigned int len; | |
afc59400 | 333 | int v; |
7adae489 | 334 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 335 | |
d40aa337 BT |
336 | p = decode_fh(p, &args->fh); |
337 | if (!p) | |
1da177e4 | 338 | return 0; |
072f62ed | 339 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
340 | |
341 | len = args->count = ntohl(*p++); | |
342 | ||
7adae489 GB |
343 | if (len > max_blocksize) |
344 | len = max_blocksize; | |
1da177e4 LT |
345 | |
346 | /* set up the kvec */ | |
347 | v=0; | |
348 | while (len > 0) { | |
afc59400 BF |
349 | struct page *p = *(rqstp->rq_next_page++); |
350 | ||
351 | rqstp->rq_vec[v].iov_base = page_address(p); | |
3cc03b16 N |
352 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; |
353 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
354 | v++; |
355 | } | |
356 | args->vlen = v; | |
357 | return xdr_argsize_check(rqstp, p); | |
358 | } | |
359 | ||
360 | int | |
91f07168 | 361 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
362 | struct nfsd3_writeargs *args) |
363 | { | |
f34b9568 | 364 | unsigned int len, v, hdr, dlen; |
7adae489 | 365 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 366 | |
d40aa337 BT |
367 | p = decode_fh(p, &args->fh); |
368 | if (!p) | |
1da177e4 | 369 | return 0; |
072f62ed | 370 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
371 | |
372 | args->count = ntohl(*p++); | |
373 | args->stable = ntohl(*p++); | |
374 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
375 | /* |
376 | * The count must equal the amount of data passed. | |
377 | */ | |
378 | if (args->count != args->len) | |
379 | return 0; | |
1da177e4 | 380 | |
f34b9568 PS |
381 | /* |
382 | * Check to make sure that we got the right number of | |
383 | * bytes. | |
f34b9568 | 384 | */ |
1da177e4 | 385 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; |
072f62ed N |
386 | dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len |
387 | - hdr; | |
f34b9568 PS |
388 | /* |
389 | * Round the length of the data which was specified up to | |
390 | * the next multiple of XDR units and then compare that | |
391 | * against the length which was actually received. | |
ba67a39e N |
392 | * Note that when RPCSEC/GSS (for example) is used, the |
393 | * data buffer can be padded so dlen might be larger | |
394 | * than required. It must never be smaller. | |
f34b9568 | 395 | */ |
ba67a39e | 396 | if (dlen < XDR_QUADLEN(len)*4) |
1da177e4 LT |
397 | return 0; |
398 | ||
f34b9568 PS |
399 | if (args->count > max_blocksize) { |
400 | args->count = max_blocksize; | |
401 | len = args->len = max_blocksize; | |
402 | } | |
3cc03b16 N |
403 | rqstp->rq_vec[0].iov_base = (void*)p; |
404 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
f34b9568 | 405 | v = 0; |
3cc03b16 N |
406 | while (len > rqstp->rq_vec[v].iov_len) { |
407 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 408 | v++; |
3cc03b16 N |
409 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
410 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 411 | } |
3cc03b16 | 412 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
413 | args->vlen = v + 1; |
414 | return 1; | |
1da177e4 LT |
415 | } |
416 | ||
417 | int | |
91f07168 | 418 | nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
419 | struct nfsd3_createargs *args) |
420 | { | |
421 | if (!(p = decode_fh(p, &args->fh)) | |
422 | || !(p = decode_filename(p, &args->name, &args->len))) | |
423 | return 0; | |
424 | ||
425 | switch (args->createmode = ntohl(*p++)) { | |
426 | case NFS3_CREATE_UNCHECKED: | |
427 | case NFS3_CREATE_GUARDED: | |
072f62ed | 428 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
429 | break; |
430 | case NFS3_CREATE_EXCLUSIVE: | |
431 | args->verf = p; | |
432 | p += 2; | |
433 | break; | |
434 | default: | |
435 | return 0; | |
436 | } | |
437 | ||
438 | return xdr_argsize_check(rqstp, p); | |
439 | } | |
440 | int | |
91f07168 | 441 | nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
442 | struct nfsd3_createargs *args) |
443 | { | |
072f62ed N |
444 | if (!(p = decode_fh(p, &args->fh)) || |
445 | !(p = decode_filename(p, &args->name, &args->len))) | |
1da177e4 | 446 | return 0; |
072f62ed | 447 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
448 | |
449 | return xdr_argsize_check(rqstp, p); | |
450 | } | |
451 | ||
452 | int | |
91f07168 | 453 | nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
454 | struct nfsd3_symlinkargs *args) |
455 | { | |
a628f667 | 456 | unsigned int len, avail; |
1da177e4 LT |
457 | char *old, *new; |
458 | struct kvec *vec; | |
459 | ||
072f62ed N |
460 | if (!(p = decode_fh(p, &args->ffh)) || |
461 | !(p = decode_filename(p, &args->fname, &args->flen)) | |
1da177e4 LT |
462 | ) |
463 | return 0; | |
072f62ed N |
464 | p = decode_sattr3(p, &args->attrs); |
465 | ||
1da177e4 LT |
466 | /* now decode the pathname, which might be larger than the first page. |
467 | * As we have to check for nul's anyway, we copy it into a new page | |
468 | * This page appears in the rq_res.pages list, but as pages_len is always | |
469 | * 0, it won't get in the way | |
470 | */ | |
1da177e4 LT |
471 | len = ntohl(*p++); |
472 | if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE) | |
473 | return 0; | |
afc59400 | 474 | args->tname = new = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
475 | args->tlen = len; |
476 | /* first copy and check from the first page */ | |
477 | old = (char*)p; | |
478 | vec = &rqstp->rq_arg.head[0]; | |
479 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
480 | while (len && avail && *old) { | |
481 | *new++ = *old++; | |
482 | len--; | |
483 | avail--; | |
484 | } | |
485 | /* now copy next page if there is one */ | |
486 | if (len && !avail && rqstp->rq_arg.page_len) { | |
487 | avail = rqstp->rq_arg.page_len; | |
a628f667 CL |
488 | if (avail > PAGE_SIZE) |
489 | avail = PAGE_SIZE; | |
1da177e4 LT |
490 | old = page_address(rqstp->rq_arg.pages[0]); |
491 | } | |
492 | while (len && avail && *old) { | |
493 | *new++ = *old++; | |
494 | len--; | |
495 | avail--; | |
496 | } | |
497 | *new = '\0'; | |
498 | if (len) | |
499 | return 0; | |
500 | ||
501 | return 1; | |
502 | } | |
503 | ||
504 | int | |
91f07168 | 505 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
506 | struct nfsd3_mknodargs *args) |
507 | { | |
508 | if (!(p = decode_fh(p, &args->fh)) | |
509 | || !(p = decode_filename(p, &args->name, &args->len))) | |
510 | return 0; | |
511 | ||
512 | args->ftype = ntohl(*p++); | |
513 | ||
514 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
072f62ed N |
515 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) |
516 | p = decode_sattr3(p, &args->attrs); | |
1da177e4 LT |
517 | |
518 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
519 | args->major = ntohl(*p++); | |
520 | args->minor = ntohl(*p++); | |
521 | } | |
522 | ||
523 | return xdr_argsize_check(rqstp, p); | |
524 | } | |
525 | ||
526 | int | |
91f07168 | 527 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
528 | struct nfsd3_renameargs *args) |
529 | { | |
530 | if (!(p = decode_fh(p, &args->ffh)) | |
531 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
532 | || !(p = decode_fh(p, &args->tfh)) | |
533 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
534 | return 0; | |
535 | ||
536 | return xdr_argsize_check(rqstp, p); | |
537 | } | |
538 | ||
539 | int | |
91f07168 | 540 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
541 | struct nfsd3_readlinkargs *args) |
542 | { | |
d40aa337 BT |
543 | p = decode_fh(p, &args->fh); |
544 | if (!p) | |
1da177e4 | 545 | return 0; |
afc59400 | 546 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
547 | |
548 | return xdr_argsize_check(rqstp, p); | |
549 | } | |
550 | ||
551 | int | |
91f07168 | 552 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
553 | struct nfsd3_linkargs *args) |
554 | { | |
555 | if (!(p = decode_fh(p, &args->ffh)) | |
556 | || !(p = decode_fh(p, &args->tfh)) | |
557 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
558 | return 0; | |
559 | ||
560 | return xdr_argsize_check(rqstp, p); | |
561 | } | |
562 | ||
563 | int | |
91f07168 | 564 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
565 | struct nfsd3_readdirargs *args) |
566 | { | |
d40aa337 BT |
567 | p = decode_fh(p, &args->fh); |
568 | if (!p) | |
1da177e4 LT |
569 | return 0; |
570 | p = xdr_decode_hyper(p, &args->cookie); | |
571 | args->verf = p; p += 2; | |
572 | args->dircount = ~0; | |
573 | args->count = ntohl(*p++); | |
574 | ||
575 | if (args->count > PAGE_SIZE) | |
576 | args->count = PAGE_SIZE; | |
577 | ||
afc59400 | 578 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
579 | |
580 | return xdr_argsize_check(rqstp, p); | |
581 | } | |
582 | ||
583 | int | |
91f07168 | 584 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
585 | struct nfsd3_readdirargs *args) |
586 | { | |
afc59400 | 587 | int len; |
7adae489 | 588 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 589 | |
d40aa337 BT |
590 | p = decode_fh(p, &args->fh); |
591 | if (!p) | |
1da177e4 LT |
592 | return 0; |
593 | p = xdr_decode_hyper(p, &args->cookie); | |
594 | args->verf = p; p += 2; | |
595 | args->dircount = ntohl(*p++); | |
596 | args->count = ntohl(*p++); | |
597 | ||
7adae489 | 598 | len = (args->count > max_blocksize) ? max_blocksize : |
1da177e4 LT |
599 | args->count; |
600 | args->count = len; | |
601 | ||
602 | while (len > 0) { | |
afc59400 | 603 | struct page *p = *(rqstp->rq_next_page++); |
1da177e4 | 604 | if (!args->buffer) |
afc59400 | 605 | args->buffer = page_address(p); |
1da177e4 LT |
606 | len -= PAGE_SIZE; |
607 | } | |
608 | ||
609 | return xdr_argsize_check(rqstp, p); | |
610 | } | |
611 | ||
612 | int | |
91f07168 | 613 | nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
614 | struct nfsd3_commitargs *args) |
615 | { | |
d40aa337 BT |
616 | p = decode_fh(p, &args->fh); |
617 | if (!p) | |
1da177e4 LT |
618 | return 0; |
619 | p = xdr_decode_hyper(p, &args->offset); | |
620 | args->count = ntohl(*p++); | |
621 | ||
622 | return xdr_argsize_check(rqstp, p); | |
623 | } | |
624 | ||
625 | /* | |
626 | * XDR encode functions | |
627 | */ | |
628 | /* | |
629 | * There must be an encoding function for void results so svc_process | |
630 | * will work properly. | |
631 | */ | |
632 | int | |
91f07168 | 633 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
634 | { |
635 | return xdr_ressize_check(rqstp, p); | |
636 | } | |
637 | ||
638 | /* GETATTR */ | |
639 | int | |
91f07168 | 640 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
641 | struct nfsd3_attrstat *resp) |
642 | { | |
40ee5dc6 PS |
643 | if (resp->status == 0) { |
644 | lease_get_mtime(resp->fh.fh_dentry->d_inode, | |
645 | &resp->stat.mtime); | |
a334de28 | 646 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
40ee5dc6 | 647 | } |
1da177e4 LT |
648 | return xdr_ressize_check(rqstp, p); |
649 | } | |
650 | ||
651 | /* SETATTR, REMOVE, RMDIR */ | |
652 | int | |
91f07168 | 653 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
654 | struct nfsd3_attrstat *resp) |
655 | { | |
656 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
657 | return xdr_ressize_check(rqstp, p); | |
658 | } | |
659 | ||
660 | /* LOOKUP */ | |
661 | int | |
91f07168 | 662 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
663 | struct nfsd3_diropres *resp) |
664 | { | |
665 | if (resp->status == 0) { | |
666 | p = encode_fh(p, &resp->fh); | |
667 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
668 | } | |
669 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
670 | return xdr_ressize_check(rqstp, p); | |
671 | } | |
672 | ||
673 | /* ACCESS */ | |
674 | int | |
91f07168 | 675 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
676 | struct nfsd3_accessres *resp) |
677 | { | |
678 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
679 | if (resp->status == 0) | |
680 | *p++ = htonl(resp->access); | |
681 | return xdr_ressize_check(rqstp, p); | |
682 | } | |
683 | ||
684 | /* READLINK */ | |
685 | int | |
91f07168 | 686 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
687 | struct nfsd3_readlinkres *resp) |
688 | { | |
689 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
690 | if (resp->status == 0) { | |
691 | *p++ = htonl(resp->len); | |
692 | xdr_ressize_check(rqstp, p); | |
693 | rqstp->rq_res.page_len = resp->len; | |
694 | if (resp->len & 3) { | |
695 | /* need to pad the tail */ | |
1da177e4 LT |
696 | rqstp->rq_res.tail[0].iov_base = p; |
697 | *p = 0; | |
698 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
699 | } | |
700 | return 1; | |
701 | } else | |
702 | return xdr_ressize_check(rqstp, p); | |
703 | } | |
704 | ||
705 | /* READ */ | |
706 | int | |
91f07168 | 707 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
708 | struct nfsd3_readres *resp) |
709 | { | |
710 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
711 | if (resp->status == 0) { | |
712 | *p++ = htonl(resp->count); | |
713 | *p++ = htonl(resp->eof); | |
714 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
715 | xdr_ressize_check(rqstp, p); | |
25985edc | 716 | /* now update rqstp->rq_res to reflect data as well */ |
1da177e4 LT |
717 | rqstp->rq_res.page_len = resp->count; |
718 | if (resp->count & 3) { | |
719 | /* need to pad the tail */ | |
1da177e4 LT |
720 | rqstp->rq_res.tail[0].iov_base = p; |
721 | *p = 0; | |
722 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
723 | } | |
724 | return 1; | |
725 | } else | |
726 | return xdr_ressize_check(rqstp, p); | |
727 | } | |
728 | ||
729 | /* WRITE */ | |
730 | int | |
91f07168 | 731 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
732 | struct nfsd3_writeres *resp) |
733 | { | |
b9c0ef85 SK |
734 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
735 | ||
1da177e4 LT |
736 | p = encode_wcc_data(rqstp, p, &resp->fh); |
737 | if (resp->status == 0) { | |
738 | *p++ = htonl(resp->count); | |
739 | *p++ = htonl(resp->committed); | |
b9c0ef85 SK |
740 | *p++ = htonl(nn->nfssvc_boot.tv_sec); |
741 | *p++ = htonl(nn->nfssvc_boot.tv_usec); | |
1da177e4 LT |
742 | } |
743 | return xdr_ressize_check(rqstp, p); | |
744 | } | |
745 | ||
746 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
747 | int | |
91f07168 | 748 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
749 | struct nfsd3_diropres *resp) |
750 | { | |
751 | if (resp->status == 0) { | |
752 | *p++ = xdr_one; | |
753 | p = encode_fh(p, &resp->fh); | |
754 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
755 | } | |
756 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
757 | return xdr_ressize_check(rqstp, p); | |
758 | } | |
759 | ||
760 | /* RENAME */ | |
761 | int | |
91f07168 | 762 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
763 | struct nfsd3_renameres *resp) |
764 | { | |
765 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
766 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
767 | return xdr_ressize_check(rqstp, p); | |
768 | } | |
769 | ||
770 | /* LINK */ | |
771 | int | |
91f07168 | 772 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
773 | struct nfsd3_linkres *resp) |
774 | { | |
775 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
776 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
777 | return xdr_ressize_check(rqstp, p); | |
778 | } | |
779 | ||
780 | /* READDIR */ | |
781 | int | |
91f07168 | 782 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
783 | struct nfsd3_readdirres *resp) |
784 | { | |
785 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
786 | ||
787 | if (resp->status == 0) { | |
788 | /* stupid readdir cookie */ | |
789 | memcpy(p, resp->verf, 8); p += 2; | |
790 | xdr_ressize_check(rqstp, p); | |
791 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
792 | return 1; /*No room for trailer */ | |
793 | rqstp->rq_res.page_len = (resp->count) << 2; | |
794 | ||
795 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
796 | rqstp->rq_res.tail[0].iov_base = p; |
797 | *p++ = 0; /* no more entries */ | |
798 | *p++ = htonl(resp->common.err == nfserr_eof); | |
799 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
800 | return 1; | |
801 | } else | |
802 | return xdr_ressize_check(rqstp, p); | |
803 | } | |
804 | ||
3ee6f61c | 805 | static __be32 * |
91f07168 | 806 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
40ee5dc6 | 807 | int namlen, u64 ino) |
1da177e4 LT |
808 | { |
809 | *p++ = xdr_one; /* mark entry present */ | |
810 | p = xdr_encode_hyper(p, ino); /* file id */ | |
811 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
812 | ||
813 | cd->offset = p; /* remember pointer */ | |
814 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
815 | ||
816 | return p; | |
817 | } | |
818 | ||
efe39651 | 819 | static __be32 |
1da177e4 LT |
820 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, |
821 | const char *name, int namlen) | |
822 | { | |
823 | struct svc_export *exp; | |
824 | struct dentry *dparent, *dchild; | |
efe39651 | 825 | __be32 rv = nfserr_noent; |
1da177e4 LT |
826 | |
827 | dparent = cd->fh.fh_dentry; | |
828 | exp = cd->fh.fh_export; | |
829 | ||
1da177e4 LT |
830 | if (isdotent(name, namlen)) { |
831 | if (namlen == 2) { | |
832 | dchild = dget_parent(dparent); | |
efe39651 AV |
833 | /* filesystem root - cannot return filehandle for ".." */ |
834 | if (dchild == dparent) | |
835 | goto out; | |
1da177e4 LT |
836 | } else |
837 | dchild = dget(dparent); | |
838 | } else | |
839 | dchild = lookup_one_len(name, dparent, namlen); | |
840 | if (IS_ERR(dchild)) | |
efe39651 | 841 | return rv; |
8177e6d6 BF |
842 | if (d_mountpoint(dchild)) |
843 | goto out; | |
8177e6d6 BF |
844 | if (!dchild->d_inode) |
845 | goto out; | |
efe39651 | 846 | rv = fh_compose(fhp, exp, dchild, &cd->fh); |
8177e6d6 | 847 | out: |
1da177e4 LT |
848 | dput(dchild); |
849 | return rv; | |
850 | } | |
851 | ||
c47d832b | 852 | static __be32 *encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, int namlen) |
8177e6d6 | 853 | { |
068c34c0 | 854 | struct svc_fh *fh = &cd->scratch; |
efe39651 | 855 | __be32 err; |
8177e6d6 | 856 | |
068c34c0 BF |
857 | fh_init(fh, NFS3_FHSIZE); |
858 | err = compose_entry_fh(cd, fh, name, namlen); | |
8177e6d6 BF |
859 | if (err) { |
860 | *p++ = 0; | |
861 | *p++ = 0; | |
aed100fa | 862 | goto out; |
8177e6d6 | 863 | } |
068c34c0 | 864 | p = encode_post_op_attr(cd->rqstp, p, fh); |
8177e6d6 | 865 | *p++ = xdr_one; /* yes, a file handle follows */ |
068c34c0 | 866 | p = encode_fh(p, fh); |
aed100fa | 867 | out: |
068c34c0 | 868 | fh_put(fh); |
8177e6d6 BF |
869 | return p; |
870 | } | |
871 | ||
1da177e4 LT |
872 | /* |
873 | * Encode a directory entry. This one works for both normal readdir | |
874 | * and readdirplus. | |
875 | * The normal readdir reply requires 2 (fileid) + 1 (stringlen) | |
876 | * + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen. | |
877 | * | |
878 | * The readdirplus baggage is 1+21 words for post_op_attr, plus the | |
879 | * file handle. | |
880 | */ | |
881 | ||
882 | #define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1) | |
883 | #define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2)) | |
884 | static int | |
598b9a56 | 885 | encode_entry(struct readdir_cd *ccd, const char *name, int namlen, |
40ee5dc6 | 886 | loff_t offset, u64 ino, unsigned int d_type, int plus) |
1da177e4 LT |
887 | { |
888 | struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres, | |
889 | common); | |
91f07168 | 890 | __be32 *p = cd->buffer; |
1da177e4 | 891 | caddr_t curr_page_addr = NULL; |
afc59400 | 892 | struct page ** page; |
1da177e4 LT |
893 | int slen; /* string (name) length */ |
894 | int elen; /* estimated entry length in words */ | |
895 | int num_entry_words = 0; /* actual number of words */ | |
896 | ||
897 | if (cd->offset) { | |
898 | u64 offset64 = offset; | |
899 | ||
900 | if (unlikely(cd->offset1)) { | |
901 | /* we ended up with offset on a page boundary */ | |
902 | *cd->offset = htonl(offset64 >> 32); | |
903 | *cd->offset1 = htonl(offset64 & 0xffffffff); | |
904 | cd->offset1 = NULL; | |
905 | } else { | |
598b9a56 | 906 | xdr_encode_hyper(cd->offset, offset64); |
1da177e4 LT |
907 | } |
908 | } | |
909 | ||
910 | /* | |
911 | dprintk("encode_entry(%.*s @%ld%s)\n", | |
912 | namlen, name, (long) offset, plus? " plus" : ""); | |
913 | */ | |
914 | ||
915 | /* truncate filename if too long */ | |
916 | if (namlen > NFS3_MAXNAMLEN) | |
917 | namlen = NFS3_MAXNAMLEN; | |
918 | ||
919 | slen = XDR_QUADLEN(namlen); | |
920 | elen = slen + NFS3_ENTRY_BAGGAGE | |
921 | + (plus? NFS3_ENTRYPLUS_BAGGAGE : 0); | |
922 | ||
923 | if (cd->buflen < elen) { | |
924 | cd->common.err = nfserr_toosmall; | |
925 | return -EINVAL; | |
926 | } | |
927 | ||
928 | /* determine which page in rq_respages[] we are currently filling */ | |
afc59400 BF |
929 | for (page = cd->rqstp->rq_respages + 1; |
930 | page < cd->rqstp->rq_next_page; page++) { | |
931 | curr_page_addr = page_address(*page); | |
1da177e4 LT |
932 | |
933 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
934 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
935 | break; | |
936 | } | |
937 | ||
938 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
939 | /* encode entry in current page */ | |
940 | ||
941 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
942 | ||
8177e6d6 BF |
943 | if (plus) |
944 | p = encode_entryplus_baggage(cd, p, name, namlen); | |
1da177e4 | 945 | num_entry_words = p - cd->buffer; |
afc59400 | 946 | } else if (*(page+1) != NULL) { |
1da177e4 LT |
947 | /* temporarily encode entry into next page, then move back to |
948 | * current and next page in rq_respages[] */ | |
91f07168 | 949 | __be32 *p1, *tmp; |
1da177e4 LT |
950 | int len1, len2; |
951 | ||
952 | /* grab next page for temporary storage of entry */ | |
afc59400 | 953 | p1 = tmp = page_address(*(page+1)); |
1da177e4 LT |
954 | |
955 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
956 | ||
8177e6d6 | 957 | if (plus) |
479c2553 | 958 | p1 = encode_entryplus_baggage(cd, p1, name, namlen); |
1da177e4 LT |
959 | |
960 | /* determine entry word length and lengths to go in pages */ | |
961 | num_entry_words = p1 - tmp; | |
962 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
963 | if ((num_entry_words << 2) < len1) { | |
964 | /* the actual number of words in the entry is less | |
965 | * than elen and can still fit in the current page | |
966 | */ | |
967 | memmove(p, tmp, num_entry_words << 2); | |
968 | p += num_entry_words; | |
969 | ||
970 | /* update offset */ | |
971 | cd->offset = cd->buffer + (cd->offset - tmp); | |
972 | } else { | |
973 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
974 | ||
975 | /* update pointer to offset location. | |
976 | * This is a 64bit quantity, so we need to | |
977 | * deal with 3 cases: | |
978 | * - entirely in first page | |
979 | * - entirely in second page | |
980 | * - 4 bytes in each page | |
981 | */ | |
982 | if (offset_r + 8 <= len1) { | |
983 | cd->offset = p + (cd->offset - tmp); | |
984 | } else if (offset_r >= len1) { | |
985 | cd->offset -= len1 >> 2; | |
986 | } else { | |
987 | /* sitting on the fence */ | |
988 | BUG_ON(offset_r != len1 - 4); | |
989 | cd->offset = p + (cd->offset - tmp); | |
990 | cd->offset1 = tmp; | |
991 | } | |
992 | ||
993 | len2 = (num_entry_words << 2) - len1; | |
994 | ||
995 | /* move from temp page to current and next pages */ | |
996 | memmove(p, tmp, len1); | |
997 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
998 | ||
999 | p = tmp + (len2 >> 2); | |
1000 | } | |
1001 | } | |
1002 | else { | |
1003 | cd->common.err = nfserr_toosmall; | |
1004 | return -EINVAL; | |
1005 | } | |
1006 | ||
1007 | cd->buflen -= num_entry_words; | |
1008 | cd->buffer = p; | |
1009 | cd->common.err = nfs_ok; | |
1010 | return 0; | |
1011 | ||
1012 | } | |
1013 | ||
1014 | int | |
a0ad13ef N |
1015 | nfs3svc_encode_entry(void *cd, const char *name, |
1016 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
1017 | { |
1018 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
1019 | } | |
1020 | ||
1021 | int | |
a0ad13ef N |
1022 | nfs3svc_encode_entry_plus(void *cd, const char *name, |
1023 | int namlen, loff_t offset, u64 ino, | |
1024 | unsigned int d_type) | |
1da177e4 LT |
1025 | { |
1026 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1027 | } | |
1028 | ||
1029 | /* FSSTAT */ | |
1030 | int | |
91f07168 | 1031 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1032 | struct nfsd3_fsstatres *resp) |
1033 | { | |
1034 | struct kstatfs *s = &resp->stats; | |
1035 | u64 bs = s->f_bsize; | |
1036 | ||
1037 | *p++ = xdr_zero; /* no post_op_attr */ | |
1038 | ||
1039 | if (resp->status == 0) { | |
1040 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1041 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1042 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1043 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1044 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1045 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1046 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1047 | } | |
1048 | return xdr_ressize_check(rqstp, p); | |
1049 | } | |
1050 | ||
1051 | /* FSINFO */ | |
1052 | int | |
91f07168 | 1053 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1054 | struct nfsd3_fsinfores *resp) |
1055 | { | |
1056 | *p++ = xdr_zero; /* no post_op_attr */ | |
1057 | ||
1058 | if (resp->status == 0) { | |
1059 | *p++ = htonl(resp->f_rtmax); | |
1060 | *p++ = htonl(resp->f_rtpref); | |
1061 | *p++ = htonl(resp->f_rtmult); | |
1062 | *p++ = htonl(resp->f_wtmax); | |
1063 | *p++ = htonl(resp->f_wtpref); | |
1064 | *p++ = htonl(resp->f_wtmult); | |
1065 | *p++ = htonl(resp->f_dtpref); | |
1066 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1067 | *p++ = xdr_one; | |
1068 | *p++ = xdr_zero; | |
1069 | *p++ = htonl(resp->f_properties); | |
1070 | } | |
1071 | ||
1072 | return xdr_ressize_check(rqstp, p); | |
1073 | } | |
1074 | ||
1075 | /* PATHCONF */ | |
1076 | int | |
91f07168 | 1077 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1078 | struct nfsd3_pathconfres *resp) |
1079 | { | |
1080 | *p++ = xdr_zero; /* no post_op_attr */ | |
1081 | ||
1082 | if (resp->status == 0) { | |
1083 | *p++ = htonl(resp->p_link_max); | |
1084 | *p++ = htonl(resp->p_name_max); | |
1085 | *p++ = htonl(resp->p_no_trunc); | |
1086 | *p++ = htonl(resp->p_chown_restricted); | |
1087 | *p++ = htonl(resp->p_case_insensitive); | |
1088 | *p++ = htonl(resp->p_case_preserving); | |
1089 | } | |
1090 | ||
1091 | return xdr_ressize_check(rqstp, p); | |
1092 | } | |
1093 | ||
1094 | /* COMMIT */ | |
1095 | int | |
91f07168 | 1096 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1097 | struct nfsd3_commitres *resp) |
1098 | { | |
b9c0ef85 SK |
1099 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1100 | ||
1da177e4 LT |
1101 | p = encode_wcc_data(rqstp, p, &resp->fh); |
1102 | /* Write verifier */ | |
1103 | if (resp->status == 0) { | |
b9c0ef85 SK |
1104 | *p++ = htonl(nn->nfssvc_boot.tv_sec); |
1105 | *p++ = htonl(nn->nfssvc_boot.tv_usec); | |
1da177e4 LT |
1106 | } |
1107 | return xdr_ressize_check(rqstp, p); | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * XDR release functions | |
1112 | */ | |
1113 | int | |
91f07168 | 1114 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1115 | struct nfsd3_attrstat *resp) |
1116 | { | |
1117 | fh_put(&resp->fh); | |
1118 | return 1; | |
1119 | } | |
1120 | ||
1121 | int | |
91f07168 | 1122 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1123 | struct nfsd3_fhandle_pair *resp) |
1124 | { | |
1125 | fh_put(&resp->fh1); | |
1126 | fh_put(&resp->fh2); | |
1127 | return 1; | |
1128 | } |