Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfsd/nfs3xdr.c | |
3 | * | |
4 | * XDR support for nfsd/protocol version 3. | |
5 | * | |
6 | * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> | |
7 | * | |
8 | * 2003-08-09 Jamie Lokier: Use htonl() for nanoseconds, not htons()! | |
9 | */ | |
10 | ||
11 | #include <linux/types.h> | |
12 | #include <linux/time.h> | |
13 | #include <linux/nfs3.h> | |
14 | #include <linux/list.h> | |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/dcache.h> | |
17 | #include <linux/namei.h> | |
18 | #include <linux/mm.h> | |
19 | #include <linux/vfs.h> | |
20 | #include <linux/sunrpc/xdr.h> | |
21 | #include <linux/sunrpc/svc.h> | |
22 | #include <linux/nfsd/nfsd.h> | |
23 | #include <linux/nfsd/xdr3.h> | |
24 | ||
25 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
26 | ||
1da177e4 LT |
27 | |
28 | /* | |
29 | * Mapping of S_IF* types to NFS file types | |
30 | */ | |
31 | static u32 nfs3_ftypes[] = { | |
32 | NF3NON, NF3FIFO, NF3CHR, NF3BAD, | |
33 | NF3DIR, NF3BAD, NF3BLK, NF3BAD, | |
34 | NF3REG, NF3BAD, NF3LNK, NF3BAD, | |
35 | NF3SOCK, NF3BAD, NF3LNK, NF3BAD, | |
36 | }; | |
37 | ||
38 | /* | |
39 | * XDR functions for basic NFS types | |
40 | */ | |
3ee6f61c | 41 | static __be32 * |
91f07168 | 42 | encode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
43 | { |
44 | *p++ = htonl((u32) time->tv_sec); *p++ = htonl(time->tv_nsec); | |
45 | return p; | |
46 | } | |
47 | ||
3ee6f61c | 48 | static __be32 * |
91f07168 | 49 | decode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
50 | { |
51 | time->tv_sec = ntohl(*p++); | |
52 | time->tv_nsec = ntohl(*p++); | |
53 | return p; | |
54 | } | |
55 | ||
3ee6f61c | 56 | static __be32 * |
91f07168 | 57 | decode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
58 | { |
59 | unsigned int size; | |
60 | fh_init(fhp, NFS3_FHSIZE); | |
61 | size = ntohl(*p++); | |
62 | if (size > NFS3_FHSIZE) | |
63 | return NULL; | |
64 | ||
65 | memcpy(&fhp->fh_handle.fh_base, p, size); | |
66 | fhp->fh_handle.fh_size = size; | |
67 | return p + XDR_QUADLEN(size); | |
68 | } | |
69 | ||
a257cdd0 | 70 | /* Helper function for NFSv3 ACL code */ |
91f07168 | 71 | __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
72 | { |
73 | return decode_fh(p, fhp); | |
74 | } | |
75 | ||
3ee6f61c | 76 | static __be32 * |
91f07168 | 77 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
78 | { |
79 | unsigned int size = fhp->fh_handle.fh_size; | |
80 | *p++ = htonl(size); | |
81 | if (size) p[XDR_QUADLEN(size)-1]=0; | |
82 | memcpy(p, &fhp->fh_handle.fh_base, size); | |
83 | return p + XDR_QUADLEN(size); | |
84 | } | |
85 | ||
86 | /* | |
87 | * Decode a file name and make sure that the path contains | |
88 | * no slashes or null bytes. | |
89 | */ | |
3ee6f61c | 90 | static __be32 * |
91f07168 | 91 | decode_filename(__be32 *p, char **namp, int *lenp) |
1da177e4 LT |
92 | { |
93 | char *name; | |
94 | int i; | |
95 | ||
96 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { | |
97 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
98 | if (*name == '\0' || *name == '/') | |
99 | return NULL; | |
100 | } | |
101 | } | |
102 | ||
103 | return p; | |
104 | } | |
105 | ||
3ee6f61c | 106 | static __be32 * |
91f07168 | 107 | decode_sattr3(__be32 *p, struct iattr *iap) |
1da177e4 LT |
108 | { |
109 | u32 tmp; | |
110 | ||
111 | iap->ia_valid = 0; | |
112 | ||
113 | if (*p++) { | |
114 | iap->ia_valid |= ATTR_MODE; | |
115 | iap->ia_mode = ntohl(*p++); | |
116 | } | |
117 | if (*p++) { | |
118 | iap->ia_valid |= ATTR_UID; | |
119 | iap->ia_uid = ntohl(*p++); | |
120 | } | |
121 | if (*p++) { | |
122 | iap->ia_valid |= ATTR_GID; | |
123 | iap->ia_gid = ntohl(*p++); | |
124 | } | |
125 | if (*p++) { | |
126 | u64 newsize; | |
127 | ||
128 | iap->ia_valid |= ATTR_SIZE; | |
129 | p = xdr_decode_hyper(p, &newsize); | |
130 | if (newsize <= NFS_OFFSET_MAX) | |
131 | iap->ia_size = newsize; | |
132 | else | |
133 | iap->ia_size = NFS_OFFSET_MAX; | |
134 | } | |
135 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
136 | iap->ia_valid |= ATTR_ATIME; | |
137 | } else if (tmp == 2) { /* set to client time */ | |
138 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
139 | iap->ia_atime.tv_sec = ntohl(*p++); | |
140 | iap->ia_atime.tv_nsec = ntohl(*p++); | |
141 | } | |
142 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
143 | iap->ia_valid |= ATTR_MTIME; | |
144 | } else if (tmp == 2) { /* set to client time */ | |
145 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
146 | iap->ia_mtime.tv_sec = ntohl(*p++); | |
147 | iap->ia_mtime.tv_nsec = ntohl(*p++); | |
148 | } | |
149 | return p; | |
150 | } | |
151 | ||
af6a4e28 N |
152 | static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) |
153 | { | |
154 | u64 f; | |
155 | switch(fsid_source(fhp)) { | |
156 | default: | |
157 | case FSIDSOURCE_DEV: | |
158 | p = xdr_encode_hyper(p, (u64)huge_encode_dev | |
159 | (fhp->fh_dentry->d_inode->i_sb->s_dev)); | |
160 | break; | |
161 | case FSIDSOURCE_FSID: | |
162 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
163 | break; | |
164 | case FSIDSOURCE_UUID: | |
165 | f = ((u64*)fhp->fh_export->ex_uuid)[0]; | |
166 | f ^= ((u64*)fhp->fh_export->ex_uuid)[1]; | |
167 | p = xdr_encode_hyper(p, f); | |
168 | break; | |
169 | } | |
170 | return p; | |
171 | } | |
172 | ||
3ee6f61c | 173 | static __be32 * |
91f07168 | 174 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 175 | struct kstat *stat) |
1da177e4 | 176 | { |
1da177e4 | 177 | struct dentry *dentry = fhp->fh_dentry; |
1da177e4 LT |
178 | struct timespec time; |
179 | ||
a334de28 DS |
180 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
181 | *p++ = htonl((u32) stat->mode); | |
182 | *p++ = htonl((u32) stat->nlink); | |
183 | *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid)); | |
184 | *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid)); | |
185 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { | |
1da177e4 LT |
186 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
187 | } else { | |
a334de28 | 188 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 189 | } |
a334de28 DS |
190 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
191 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
192 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
af6a4e28 | 193 | p = encode_fsid(p, fhp); |
a334de28 DS |
194 | p = xdr_encode_hyper(p, (u64) stat->ino); |
195 | p = encode_time3(p, &stat->atime); | |
1da177e4 LT |
196 | lease_get_mtime(dentry->d_inode, &time); |
197 | p = encode_time3(p, &time); | |
a334de28 | 198 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
199 | |
200 | return p; | |
201 | } | |
202 | ||
3ee6f61c | 203 | static __be32 * |
91f07168 | 204 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
205 | { |
206 | struct inode *inode = fhp->fh_dentry->d_inode; | |
207 | ||
208 | /* Attributes to follow */ | |
209 | *p++ = xdr_one; | |
210 | ||
211 | *p++ = htonl(nfs3_ftypes[(fhp->fh_post_mode & S_IFMT) >> 12]); | |
212 | *p++ = htonl((u32) fhp->fh_post_mode); | |
213 | *p++ = htonl((u32) fhp->fh_post_nlink); | |
214 | *p++ = htonl((u32) nfsd_ruid(rqstp, fhp->fh_post_uid)); | |
215 | *p++ = htonl((u32) nfsd_rgid(rqstp, fhp->fh_post_gid)); | |
216 | if (S_ISLNK(fhp->fh_post_mode) && fhp->fh_post_size > NFS3_MAXPATHLEN) { | |
217 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); | |
218 | } else { | |
219 | p = xdr_encode_hyper(p, (u64) fhp->fh_post_size); | |
220 | } | |
221 | p = xdr_encode_hyper(p, ((u64)fhp->fh_post_blocks) << 9); | |
222 | *p++ = fhp->fh_post_rdev[0]; | |
223 | *p++ = fhp->fh_post_rdev[1]; | |
af6a4e28 | 224 | p = encode_fsid(p, fhp); |
1da177e4 LT |
225 | p = xdr_encode_hyper(p, (u64) inode->i_ino); |
226 | p = encode_time3(p, &fhp->fh_post_atime); | |
227 | p = encode_time3(p, &fhp->fh_post_mtime); | |
228 | p = encode_time3(p, &fhp->fh_post_ctime); | |
229 | ||
230 | return p; | |
231 | } | |
232 | ||
233 | /* | |
234 | * Encode post-operation attributes. | |
235 | * The inode may be NULL if the call failed because of a stale file | |
236 | * handle. In this case, no attributes are returned. | |
237 | */ | |
91f07168 AV |
238 | static __be32 * |
239 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
240 | { |
241 | struct dentry *dentry = fhp->fh_dentry; | |
242 | if (dentry && dentry->d_inode != NULL) { | |
a334de28 DS |
243 | int err; |
244 | struct kstat stat; | |
245 | ||
246 | err = vfs_getattr(fhp->fh_export->ex_mnt, dentry, &stat); | |
247 | if (!err) { | |
248 | *p++ = xdr_one; /* attributes follow */ | |
249 | return encode_fattr3(rqstp, p, fhp, &stat); | |
250 | } | |
1da177e4 LT |
251 | } |
252 | *p++ = xdr_zero; | |
253 | return p; | |
254 | } | |
255 | ||
a257cdd0 | 256 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
257 | __be32 * |
258 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
259 | { |
260 | return encode_post_op_attr(rqstp, p, fhp); | |
261 | } | |
262 | ||
1da177e4 LT |
263 | /* |
264 | * Enocde weak cache consistency data | |
265 | */ | |
91f07168 AV |
266 | static __be32 * |
267 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
268 | { |
269 | struct dentry *dentry = fhp->fh_dentry; | |
270 | ||
271 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
272 | if (fhp->fh_pre_saved) { | |
273 | *p++ = xdr_one; | |
274 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
275 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
276 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
277 | } else { | |
278 | *p++ = xdr_zero; | |
279 | } | |
280 | return encode_saved_post_attr(rqstp, p, fhp); | |
281 | } | |
282 | /* no pre- or post-attrs */ | |
283 | *p++ = xdr_zero; | |
284 | return encode_post_op_attr(rqstp, p, fhp); | |
285 | } | |
286 | ||
287 | ||
288 | /* | |
289 | * XDR decode functions | |
290 | */ | |
291 | int | |
91f07168 | 292 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
293 | { |
294 | if (!(p = decode_fh(p, &args->fh))) | |
295 | return 0; | |
296 | return xdr_argsize_check(rqstp, p); | |
297 | } | |
298 | ||
299 | int | |
91f07168 | 300 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
301 | struct nfsd3_sattrargs *args) |
302 | { | |
303 | if (!(p = decode_fh(p, &args->fh)) | |
304 | || !(p = decode_sattr3(p, &args->attrs))) | |
305 | return 0; | |
306 | ||
307 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
308 | struct timespec time; | |
309 | p = decode_time3(p, &time); | |
310 | args->guardtime = time.tv_sec; | |
311 | } | |
312 | ||
313 | return xdr_argsize_check(rqstp, p); | |
314 | } | |
315 | ||
316 | int | |
91f07168 | 317 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
318 | struct nfsd3_diropargs *args) |
319 | { | |
320 | if (!(p = decode_fh(p, &args->fh)) | |
321 | || !(p = decode_filename(p, &args->name, &args->len))) | |
322 | return 0; | |
323 | ||
324 | return xdr_argsize_check(rqstp, p); | |
325 | } | |
326 | ||
327 | int | |
91f07168 | 328 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
329 | struct nfsd3_accessargs *args) |
330 | { | |
331 | if (!(p = decode_fh(p, &args->fh))) | |
332 | return 0; | |
333 | args->access = ntohl(*p++); | |
334 | ||
335 | return xdr_argsize_check(rqstp, p); | |
336 | } | |
337 | ||
338 | int | |
91f07168 | 339 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
340 | struct nfsd3_readargs *args) |
341 | { | |
342 | unsigned int len; | |
343 | int v,pn; | |
7adae489 | 344 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
345 | |
346 | if (!(p = decode_fh(p, &args->fh)) | |
347 | || !(p = xdr_decode_hyper(p, &args->offset))) | |
348 | return 0; | |
349 | ||
350 | len = args->count = ntohl(*p++); | |
351 | ||
7adae489 GB |
352 | if (len > max_blocksize) |
353 | len = max_blocksize; | |
1da177e4 LT |
354 | |
355 | /* set up the kvec */ | |
356 | v=0; | |
357 | while (len > 0) { | |
44524359 | 358 | pn = rqstp->rq_resused++; |
3cc03b16 N |
359 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]); |
360 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; | |
361 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
362 | v++; |
363 | } | |
364 | args->vlen = v; | |
365 | return xdr_argsize_check(rqstp, p); | |
366 | } | |
367 | ||
368 | int | |
91f07168 | 369 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
370 | struct nfsd3_writeargs *args) |
371 | { | |
f34b9568 | 372 | unsigned int len, v, hdr, dlen; |
7adae489 | 373 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
374 | |
375 | if (!(p = decode_fh(p, &args->fh)) | |
376 | || !(p = xdr_decode_hyper(p, &args->offset))) | |
377 | return 0; | |
378 | ||
379 | args->count = ntohl(*p++); | |
380 | args->stable = ntohl(*p++); | |
381 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
382 | /* |
383 | * The count must equal the amount of data passed. | |
384 | */ | |
385 | if (args->count != args->len) | |
386 | return 0; | |
1da177e4 | 387 | |
f34b9568 PS |
388 | /* |
389 | * Check to make sure that we got the right number of | |
390 | * bytes. | |
391 | * | |
392 | * If more than one page was used, then compute the length | |
393 | * of the data in the request as the total size of the | |
394 | * request minus the transport protocol headers minus the | |
395 | * RPC protocol headers minus the NFS protocol fields | |
396 | * already consumed. If the request fits into a single | |
397 | * page, then compete the length of the data as the size | |
398 | * of the NFS portion of the request minus the NFS | |
399 | * protocol fields already consumed. | |
400 | */ | |
1da177e4 | 401 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; |
f34b9568 PS |
402 | if (rqstp->rq_respages != rqstp->rq_pages + 1) { |
403 | dlen = rqstp->rq_arg.len - | |
404 | (PAGE_SIZE - rqstp->rq_arg.head[0].iov_len) - hdr; | |
405 | } else { | |
406 | dlen = rqstp->rq_arg.head[0].iov_len - hdr; | |
407 | } | |
408 | /* | |
409 | * Round the length of the data which was specified up to | |
410 | * the next multiple of XDR units and then compare that | |
411 | * against the length which was actually received. | |
412 | */ | |
413 | if (dlen != ((len + 3) & ~0x3)) | |
1da177e4 LT |
414 | return 0; |
415 | ||
f34b9568 PS |
416 | if (args->count > max_blocksize) { |
417 | args->count = max_blocksize; | |
418 | len = args->len = max_blocksize; | |
419 | } | |
3cc03b16 N |
420 | rqstp->rq_vec[0].iov_base = (void*)p; |
421 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
f34b9568 | 422 | v = 0; |
3cc03b16 N |
423 | while (len > rqstp->rq_vec[v].iov_len) { |
424 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 425 | v++; |
3cc03b16 N |
426 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
427 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 428 | } |
3cc03b16 | 429 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
430 | args->vlen = v + 1; |
431 | return 1; | |
1da177e4 LT |
432 | } |
433 | ||
434 | int | |
91f07168 | 435 | nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
436 | struct nfsd3_createargs *args) |
437 | { | |
438 | if (!(p = decode_fh(p, &args->fh)) | |
439 | || !(p = decode_filename(p, &args->name, &args->len))) | |
440 | return 0; | |
441 | ||
442 | switch (args->createmode = ntohl(*p++)) { | |
443 | case NFS3_CREATE_UNCHECKED: | |
444 | case NFS3_CREATE_GUARDED: | |
445 | if (!(p = decode_sattr3(p, &args->attrs))) | |
446 | return 0; | |
447 | break; | |
448 | case NFS3_CREATE_EXCLUSIVE: | |
449 | args->verf = p; | |
450 | p += 2; | |
451 | break; | |
452 | default: | |
453 | return 0; | |
454 | } | |
455 | ||
456 | return xdr_argsize_check(rqstp, p); | |
457 | } | |
458 | int | |
91f07168 | 459 | nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
460 | struct nfsd3_createargs *args) |
461 | { | |
462 | if (!(p = decode_fh(p, &args->fh)) | |
463 | || !(p = decode_filename(p, &args->name, &args->len)) | |
464 | || !(p = decode_sattr3(p, &args->attrs))) | |
465 | return 0; | |
466 | ||
467 | return xdr_argsize_check(rqstp, p); | |
468 | } | |
469 | ||
470 | int | |
91f07168 | 471 | nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
472 | struct nfsd3_symlinkargs *args) |
473 | { | |
474 | unsigned int len; | |
475 | int avail; | |
476 | char *old, *new; | |
477 | struct kvec *vec; | |
478 | ||
479 | if (!(p = decode_fh(p, &args->ffh)) | |
480 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
481 | || !(p = decode_sattr3(p, &args->attrs)) | |
482 | ) | |
483 | return 0; | |
484 | /* now decode the pathname, which might be larger than the first page. | |
485 | * As we have to check for nul's anyway, we copy it into a new page | |
486 | * This page appears in the rq_res.pages list, but as pages_len is always | |
487 | * 0, it won't get in the way | |
488 | */ | |
1da177e4 LT |
489 | len = ntohl(*p++); |
490 | if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE) | |
491 | return 0; | |
44524359 N |
492 | args->tname = new = |
493 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
494 | args->tlen = len; |
495 | /* first copy and check from the first page */ | |
496 | old = (char*)p; | |
497 | vec = &rqstp->rq_arg.head[0]; | |
498 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
499 | while (len && avail && *old) { | |
500 | *new++ = *old++; | |
501 | len--; | |
502 | avail--; | |
503 | } | |
504 | /* now copy next page if there is one */ | |
505 | if (len && !avail && rqstp->rq_arg.page_len) { | |
506 | avail = rqstp->rq_arg.page_len; | |
507 | if (avail > PAGE_SIZE) avail = PAGE_SIZE; | |
508 | old = page_address(rqstp->rq_arg.pages[0]); | |
509 | } | |
510 | while (len && avail && *old) { | |
511 | *new++ = *old++; | |
512 | len--; | |
513 | avail--; | |
514 | } | |
515 | *new = '\0'; | |
516 | if (len) | |
517 | return 0; | |
518 | ||
519 | return 1; | |
520 | } | |
521 | ||
522 | int | |
91f07168 | 523 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
524 | struct nfsd3_mknodargs *args) |
525 | { | |
526 | if (!(p = decode_fh(p, &args->fh)) | |
527 | || !(p = decode_filename(p, &args->name, &args->len))) | |
528 | return 0; | |
529 | ||
530 | args->ftype = ntohl(*p++); | |
531 | ||
532 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
533 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) { | |
534 | if (!(p = decode_sattr3(p, &args->attrs))) | |
535 | return 0; | |
536 | } | |
537 | ||
538 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
539 | args->major = ntohl(*p++); | |
540 | args->minor = ntohl(*p++); | |
541 | } | |
542 | ||
543 | return xdr_argsize_check(rqstp, p); | |
544 | } | |
545 | ||
546 | int | |
91f07168 | 547 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
548 | struct nfsd3_renameargs *args) |
549 | { | |
550 | if (!(p = decode_fh(p, &args->ffh)) | |
551 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
552 | || !(p = decode_fh(p, &args->tfh)) | |
553 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
554 | return 0; | |
555 | ||
556 | return xdr_argsize_check(rqstp, p); | |
557 | } | |
558 | ||
559 | int | |
91f07168 | 560 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
561 | struct nfsd3_readlinkargs *args) |
562 | { | |
563 | if (!(p = decode_fh(p, &args->fh))) | |
564 | return 0; | |
44524359 N |
565 | args->buffer = |
566 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
567 | |
568 | return xdr_argsize_check(rqstp, p); | |
569 | } | |
570 | ||
571 | int | |
91f07168 | 572 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
573 | struct nfsd3_linkargs *args) |
574 | { | |
575 | if (!(p = decode_fh(p, &args->ffh)) | |
576 | || !(p = decode_fh(p, &args->tfh)) | |
577 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
578 | return 0; | |
579 | ||
580 | return xdr_argsize_check(rqstp, p); | |
581 | } | |
582 | ||
583 | int | |
91f07168 | 584 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
585 | struct nfsd3_readdirargs *args) |
586 | { | |
587 | if (!(p = decode_fh(p, &args->fh))) | |
588 | return 0; | |
589 | p = xdr_decode_hyper(p, &args->cookie); | |
590 | args->verf = p; p += 2; | |
591 | args->dircount = ~0; | |
592 | args->count = ntohl(*p++); | |
593 | ||
594 | if (args->count > PAGE_SIZE) | |
595 | args->count = PAGE_SIZE; | |
596 | ||
44524359 N |
597 | args->buffer = |
598 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
599 | |
600 | return xdr_argsize_check(rqstp, p); | |
601 | } | |
602 | ||
603 | int | |
91f07168 | 604 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
605 | struct nfsd3_readdirargs *args) |
606 | { | |
607 | int len, pn; | |
7adae489 | 608 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
609 | |
610 | if (!(p = decode_fh(p, &args->fh))) | |
611 | return 0; | |
612 | p = xdr_decode_hyper(p, &args->cookie); | |
613 | args->verf = p; p += 2; | |
614 | args->dircount = ntohl(*p++); | |
615 | args->count = ntohl(*p++); | |
616 | ||
7adae489 | 617 | len = (args->count > max_blocksize) ? max_blocksize : |
1da177e4 LT |
618 | args->count; |
619 | args->count = len; | |
620 | ||
621 | while (len > 0) { | |
44524359 | 622 | pn = rqstp->rq_resused++; |
1da177e4 LT |
623 | if (!args->buffer) |
624 | args->buffer = page_address(rqstp->rq_respages[pn]); | |
625 | len -= PAGE_SIZE; | |
626 | } | |
627 | ||
628 | return xdr_argsize_check(rqstp, p); | |
629 | } | |
630 | ||
631 | int | |
91f07168 | 632 | nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
633 | struct nfsd3_commitargs *args) |
634 | { | |
635 | if (!(p = decode_fh(p, &args->fh))) | |
636 | return 0; | |
637 | p = xdr_decode_hyper(p, &args->offset); | |
638 | args->count = ntohl(*p++); | |
639 | ||
640 | return xdr_argsize_check(rqstp, p); | |
641 | } | |
642 | ||
643 | /* | |
644 | * XDR encode functions | |
645 | */ | |
646 | /* | |
647 | * There must be an encoding function for void results so svc_process | |
648 | * will work properly. | |
649 | */ | |
650 | int | |
91f07168 | 651 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
652 | { |
653 | return xdr_ressize_check(rqstp, p); | |
654 | } | |
655 | ||
656 | /* GETATTR */ | |
657 | int | |
91f07168 | 658 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
659 | struct nfsd3_attrstat *resp) |
660 | { | |
661 | if (resp->status == 0) | |
a334de28 | 662 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
1da177e4 LT |
663 | return xdr_ressize_check(rqstp, p); |
664 | } | |
665 | ||
666 | /* SETATTR, REMOVE, RMDIR */ | |
667 | int | |
91f07168 | 668 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
669 | struct nfsd3_attrstat *resp) |
670 | { | |
671 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
672 | return xdr_ressize_check(rqstp, p); | |
673 | } | |
674 | ||
675 | /* LOOKUP */ | |
676 | int | |
91f07168 | 677 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
678 | struct nfsd3_diropres *resp) |
679 | { | |
680 | if (resp->status == 0) { | |
681 | p = encode_fh(p, &resp->fh); | |
682 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
683 | } | |
684 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
685 | return xdr_ressize_check(rqstp, p); | |
686 | } | |
687 | ||
688 | /* ACCESS */ | |
689 | int | |
91f07168 | 690 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
691 | struct nfsd3_accessres *resp) |
692 | { | |
693 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
694 | if (resp->status == 0) | |
695 | *p++ = htonl(resp->access); | |
696 | return xdr_ressize_check(rqstp, p); | |
697 | } | |
698 | ||
699 | /* READLINK */ | |
700 | int | |
91f07168 | 701 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
702 | struct nfsd3_readlinkres *resp) |
703 | { | |
704 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
705 | if (resp->status == 0) { | |
706 | *p++ = htonl(resp->len); | |
707 | xdr_ressize_check(rqstp, p); | |
708 | rqstp->rq_res.page_len = resp->len; | |
709 | if (resp->len & 3) { | |
710 | /* need to pad the tail */ | |
1da177e4 LT |
711 | rqstp->rq_res.tail[0].iov_base = p; |
712 | *p = 0; | |
713 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
714 | } | |
715 | return 1; | |
716 | } else | |
717 | return xdr_ressize_check(rqstp, p); | |
718 | } | |
719 | ||
720 | /* READ */ | |
721 | int | |
91f07168 | 722 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
723 | struct nfsd3_readres *resp) |
724 | { | |
725 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
726 | if (resp->status == 0) { | |
727 | *p++ = htonl(resp->count); | |
728 | *p++ = htonl(resp->eof); | |
729 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
730 | xdr_ressize_check(rqstp, p); | |
731 | /* now update rqstp->rq_res to reflect data aswell */ | |
732 | rqstp->rq_res.page_len = resp->count; | |
733 | if (resp->count & 3) { | |
734 | /* need to pad the tail */ | |
1da177e4 LT |
735 | rqstp->rq_res.tail[0].iov_base = p; |
736 | *p = 0; | |
737 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
738 | } | |
739 | return 1; | |
740 | } else | |
741 | return xdr_ressize_check(rqstp, p); | |
742 | } | |
743 | ||
744 | /* WRITE */ | |
745 | int | |
91f07168 | 746 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
747 | struct nfsd3_writeres *resp) |
748 | { | |
749 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
750 | if (resp->status == 0) { | |
751 | *p++ = htonl(resp->count); | |
752 | *p++ = htonl(resp->committed); | |
753 | *p++ = htonl(nfssvc_boot.tv_sec); | |
754 | *p++ = htonl(nfssvc_boot.tv_usec); | |
755 | } | |
756 | return xdr_ressize_check(rqstp, p); | |
757 | } | |
758 | ||
759 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
760 | int | |
91f07168 | 761 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
762 | struct nfsd3_diropres *resp) |
763 | { | |
764 | if (resp->status == 0) { | |
765 | *p++ = xdr_one; | |
766 | p = encode_fh(p, &resp->fh); | |
767 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
768 | } | |
769 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
770 | return xdr_ressize_check(rqstp, p); | |
771 | } | |
772 | ||
773 | /* RENAME */ | |
774 | int | |
91f07168 | 775 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
776 | struct nfsd3_renameres *resp) |
777 | { | |
778 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
779 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
780 | return xdr_ressize_check(rqstp, p); | |
781 | } | |
782 | ||
783 | /* LINK */ | |
784 | int | |
91f07168 | 785 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
786 | struct nfsd3_linkres *resp) |
787 | { | |
788 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
789 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
790 | return xdr_ressize_check(rqstp, p); | |
791 | } | |
792 | ||
793 | /* READDIR */ | |
794 | int | |
91f07168 | 795 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
796 | struct nfsd3_readdirres *resp) |
797 | { | |
798 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
799 | ||
800 | if (resp->status == 0) { | |
801 | /* stupid readdir cookie */ | |
802 | memcpy(p, resp->verf, 8); p += 2; | |
803 | xdr_ressize_check(rqstp, p); | |
804 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
805 | return 1; /*No room for trailer */ | |
806 | rqstp->rq_res.page_len = (resp->count) << 2; | |
807 | ||
808 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
809 | rqstp->rq_res.tail[0].iov_base = p; |
810 | *p++ = 0; /* no more entries */ | |
811 | *p++ = htonl(resp->common.err == nfserr_eof); | |
812 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
813 | return 1; | |
814 | } else | |
815 | return xdr_ressize_check(rqstp, p); | |
816 | } | |
817 | ||
3ee6f61c | 818 | static __be32 * |
91f07168 | 819 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
1da177e4 LT |
820 | int namlen, ino_t ino) |
821 | { | |
822 | *p++ = xdr_one; /* mark entry present */ | |
823 | p = xdr_encode_hyper(p, ino); /* file id */ | |
824 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
825 | ||
826 | cd->offset = p; /* remember pointer */ | |
827 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
828 | ||
829 | return p; | |
830 | } | |
831 | ||
3ee6f61c | 832 | static __be32 * |
91f07168 | 833 | encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, |
1da177e4 LT |
834 | struct svc_fh *fhp) |
835 | { | |
836 | p = encode_post_op_attr(cd->rqstp, p, fhp); | |
837 | *p++ = xdr_one; /* yes, a file handle follows */ | |
838 | p = encode_fh(p, fhp); | |
839 | fh_put(fhp); | |
840 | return p; | |
841 | } | |
842 | ||
843 | static int | |
844 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, | |
845 | const char *name, int namlen) | |
846 | { | |
847 | struct svc_export *exp; | |
848 | struct dentry *dparent, *dchild; | |
849 | int rv = 0; | |
850 | ||
851 | dparent = cd->fh.fh_dentry; | |
852 | exp = cd->fh.fh_export; | |
853 | ||
854 | fh_init(fhp, NFS3_FHSIZE); | |
855 | if (isdotent(name, namlen)) { | |
856 | if (namlen == 2) { | |
857 | dchild = dget_parent(dparent); | |
858 | if (dchild == dparent) { | |
859 | /* filesystem root - cannot return filehandle for ".." */ | |
860 | dput(dchild); | |
861 | return 1; | |
862 | } | |
863 | } else | |
864 | dchild = dget(dparent); | |
865 | } else | |
866 | dchild = lookup_one_len(name, dparent, namlen); | |
867 | if (IS_ERR(dchild)) | |
868 | return 1; | |
869 | if (d_mountpoint(dchild) || | |
870 | fh_compose(fhp, exp, dchild, &cd->fh) != 0 || | |
871 | !dchild->d_inode) | |
872 | rv = 1; | |
873 | dput(dchild); | |
874 | return rv; | |
875 | } | |
876 | ||
877 | /* | |
878 | * Encode a directory entry. This one works for both normal readdir | |
879 | * and readdirplus. | |
880 | * The normal readdir reply requires 2 (fileid) + 1 (stringlen) | |
881 | * + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen. | |
882 | * | |
883 | * The readdirplus baggage is 1+21 words for post_op_attr, plus the | |
884 | * file handle. | |
885 | */ | |
886 | ||
887 | #define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1) | |
888 | #define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2)) | |
889 | static int | |
598b9a56 N |
890 | encode_entry(struct readdir_cd *ccd, const char *name, int namlen, |
891 | loff_t offset, ino_t ino, unsigned int d_type, int plus) | |
1da177e4 LT |
892 | { |
893 | struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres, | |
894 | common); | |
91f07168 | 895 | __be32 *p = cd->buffer; |
1da177e4 LT |
896 | caddr_t curr_page_addr = NULL; |
897 | int pn; /* current page number */ | |
898 | int slen; /* string (name) length */ | |
899 | int elen; /* estimated entry length in words */ | |
900 | int num_entry_words = 0; /* actual number of words */ | |
901 | ||
902 | if (cd->offset) { | |
903 | u64 offset64 = offset; | |
904 | ||
905 | if (unlikely(cd->offset1)) { | |
906 | /* we ended up with offset on a page boundary */ | |
907 | *cd->offset = htonl(offset64 >> 32); | |
908 | *cd->offset1 = htonl(offset64 & 0xffffffff); | |
909 | cd->offset1 = NULL; | |
910 | } else { | |
598b9a56 | 911 | xdr_encode_hyper(cd->offset, offset64); |
1da177e4 LT |
912 | } |
913 | } | |
914 | ||
915 | /* | |
916 | dprintk("encode_entry(%.*s @%ld%s)\n", | |
917 | namlen, name, (long) offset, plus? " plus" : ""); | |
918 | */ | |
919 | ||
920 | /* truncate filename if too long */ | |
921 | if (namlen > NFS3_MAXNAMLEN) | |
922 | namlen = NFS3_MAXNAMLEN; | |
923 | ||
924 | slen = XDR_QUADLEN(namlen); | |
925 | elen = slen + NFS3_ENTRY_BAGGAGE | |
926 | + (plus? NFS3_ENTRYPLUS_BAGGAGE : 0); | |
927 | ||
928 | if (cd->buflen < elen) { | |
929 | cd->common.err = nfserr_toosmall; | |
930 | return -EINVAL; | |
931 | } | |
932 | ||
933 | /* determine which page in rq_respages[] we are currently filling */ | |
934 | for (pn=1; pn < cd->rqstp->rq_resused; pn++) { | |
935 | curr_page_addr = page_address(cd->rqstp->rq_respages[pn]); | |
936 | ||
937 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
938 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
939 | break; | |
940 | } | |
941 | ||
942 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
943 | /* encode entry in current page */ | |
944 | ||
945 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
946 | ||
947 | /* throw in readdirplus baggage */ | |
948 | if (plus) { | |
949 | struct svc_fh fh; | |
950 | ||
951 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
952 | *p++ = 0; | |
953 | *p++ = 0; | |
954 | } else | |
955 | p = encode_entryplus_baggage(cd, p, &fh); | |
956 | } | |
957 | num_entry_words = p - cd->buffer; | |
958 | } else if (cd->rqstp->rq_respages[pn+1] != NULL) { | |
959 | /* temporarily encode entry into next page, then move back to | |
960 | * current and next page in rq_respages[] */ | |
91f07168 | 961 | __be32 *p1, *tmp; |
1da177e4 LT |
962 | int len1, len2; |
963 | ||
964 | /* grab next page for temporary storage of entry */ | |
965 | p1 = tmp = page_address(cd->rqstp->rq_respages[pn+1]); | |
966 | ||
967 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
968 | ||
969 | /* throw in readdirplus baggage */ | |
970 | if (plus) { | |
971 | struct svc_fh fh; | |
972 | ||
973 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
974 | /* zero out the filehandle */ | |
975 | *p1++ = 0; | |
976 | *p1++ = 0; | |
977 | } else | |
978 | p1 = encode_entryplus_baggage(cd, p1, &fh); | |
979 | } | |
980 | ||
981 | /* determine entry word length and lengths to go in pages */ | |
982 | num_entry_words = p1 - tmp; | |
983 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
984 | if ((num_entry_words << 2) < len1) { | |
985 | /* the actual number of words in the entry is less | |
986 | * than elen and can still fit in the current page | |
987 | */ | |
988 | memmove(p, tmp, num_entry_words << 2); | |
989 | p += num_entry_words; | |
990 | ||
991 | /* update offset */ | |
992 | cd->offset = cd->buffer + (cd->offset - tmp); | |
993 | } else { | |
994 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
995 | ||
996 | /* update pointer to offset location. | |
997 | * This is a 64bit quantity, so we need to | |
998 | * deal with 3 cases: | |
999 | * - entirely in first page | |
1000 | * - entirely in second page | |
1001 | * - 4 bytes in each page | |
1002 | */ | |
1003 | if (offset_r + 8 <= len1) { | |
1004 | cd->offset = p + (cd->offset - tmp); | |
1005 | } else if (offset_r >= len1) { | |
1006 | cd->offset -= len1 >> 2; | |
1007 | } else { | |
1008 | /* sitting on the fence */ | |
1009 | BUG_ON(offset_r != len1 - 4); | |
1010 | cd->offset = p + (cd->offset - tmp); | |
1011 | cd->offset1 = tmp; | |
1012 | } | |
1013 | ||
1014 | len2 = (num_entry_words << 2) - len1; | |
1015 | ||
1016 | /* move from temp page to current and next pages */ | |
1017 | memmove(p, tmp, len1); | |
1018 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
1019 | ||
1020 | p = tmp + (len2 >> 2); | |
1021 | } | |
1022 | } | |
1023 | else { | |
1024 | cd->common.err = nfserr_toosmall; | |
1025 | return -EINVAL; | |
1026 | } | |
1027 | ||
1028 | cd->buflen -= num_entry_words; | |
1029 | cd->buffer = p; | |
1030 | cd->common.err = nfs_ok; | |
1031 | return 0; | |
1032 | ||
1033 | } | |
1034 | ||
1035 | int | |
a0ad13ef N |
1036 | nfs3svc_encode_entry(void *cd, const char *name, |
1037 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
1038 | { |
1039 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
1040 | } | |
1041 | ||
1042 | int | |
a0ad13ef N |
1043 | nfs3svc_encode_entry_plus(void *cd, const char *name, |
1044 | int namlen, loff_t offset, u64 ino, | |
1045 | unsigned int d_type) | |
1da177e4 LT |
1046 | { |
1047 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1048 | } | |
1049 | ||
1050 | /* FSSTAT */ | |
1051 | int | |
91f07168 | 1052 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1053 | struct nfsd3_fsstatres *resp) |
1054 | { | |
1055 | struct kstatfs *s = &resp->stats; | |
1056 | u64 bs = s->f_bsize; | |
1057 | ||
1058 | *p++ = xdr_zero; /* no post_op_attr */ | |
1059 | ||
1060 | if (resp->status == 0) { | |
1061 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1062 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1063 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1064 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1065 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1066 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1067 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1068 | } | |
1069 | return xdr_ressize_check(rqstp, p); | |
1070 | } | |
1071 | ||
1072 | /* FSINFO */ | |
1073 | int | |
91f07168 | 1074 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1075 | struct nfsd3_fsinfores *resp) |
1076 | { | |
1077 | *p++ = xdr_zero; /* no post_op_attr */ | |
1078 | ||
1079 | if (resp->status == 0) { | |
1080 | *p++ = htonl(resp->f_rtmax); | |
1081 | *p++ = htonl(resp->f_rtpref); | |
1082 | *p++ = htonl(resp->f_rtmult); | |
1083 | *p++ = htonl(resp->f_wtmax); | |
1084 | *p++ = htonl(resp->f_wtpref); | |
1085 | *p++ = htonl(resp->f_wtmult); | |
1086 | *p++ = htonl(resp->f_dtpref); | |
1087 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1088 | *p++ = xdr_one; | |
1089 | *p++ = xdr_zero; | |
1090 | *p++ = htonl(resp->f_properties); | |
1091 | } | |
1092 | ||
1093 | return xdr_ressize_check(rqstp, p); | |
1094 | } | |
1095 | ||
1096 | /* PATHCONF */ | |
1097 | int | |
91f07168 | 1098 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1099 | struct nfsd3_pathconfres *resp) |
1100 | { | |
1101 | *p++ = xdr_zero; /* no post_op_attr */ | |
1102 | ||
1103 | if (resp->status == 0) { | |
1104 | *p++ = htonl(resp->p_link_max); | |
1105 | *p++ = htonl(resp->p_name_max); | |
1106 | *p++ = htonl(resp->p_no_trunc); | |
1107 | *p++ = htonl(resp->p_chown_restricted); | |
1108 | *p++ = htonl(resp->p_case_insensitive); | |
1109 | *p++ = htonl(resp->p_case_preserving); | |
1110 | } | |
1111 | ||
1112 | return xdr_ressize_check(rqstp, p); | |
1113 | } | |
1114 | ||
1115 | /* COMMIT */ | |
1116 | int | |
91f07168 | 1117 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1118 | struct nfsd3_commitres *resp) |
1119 | { | |
1120 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
1121 | /* Write verifier */ | |
1122 | if (resp->status == 0) { | |
1123 | *p++ = htonl(nfssvc_boot.tv_sec); | |
1124 | *p++ = htonl(nfssvc_boot.tv_usec); | |
1125 | } | |
1126 | return xdr_ressize_check(rqstp, p); | |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * XDR release functions | |
1131 | */ | |
1132 | int | |
91f07168 | 1133 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1134 | struct nfsd3_attrstat *resp) |
1135 | { | |
1136 | fh_put(&resp->fh); | |
1137 | return 1; | |
1138 | } | |
1139 | ||
1140 | int | |
91f07168 | 1141 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1142 | struct nfsd3_fhandle_pair *resp) |
1143 | { | |
1144 | fh_put(&resp->fh1); | |
1145 | fh_put(&resp->fh2); | |
1146 | return 1; | |
1147 | } |