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Commit | Line | Data |
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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" |
1da177e4 LT |
14 | |
15 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
16 | ||
1da177e4 LT |
17 | |
18 | /* | |
19 | * Mapping of S_IF* types to NFS file types | |
20 | */ | |
21 | static u32 nfs3_ftypes[] = { | |
22 | NF3NON, NF3FIFO, NF3CHR, NF3BAD, | |
23 | NF3DIR, NF3BAD, NF3BLK, NF3BAD, | |
24 | NF3REG, NF3BAD, NF3LNK, NF3BAD, | |
25 | NF3SOCK, NF3BAD, NF3LNK, NF3BAD, | |
26 | }; | |
27 | ||
28 | /* | |
29 | * XDR functions for basic NFS types | |
30 | */ | |
3ee6f61c | 31 | static __be32 * |
91f07168 | 32 | encode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
33 | { |
34 | *p++ = htonl((u32) time->tv_sec); *p++ = htonl(time->tv_nsec); | |
35 | return p; | |
36 | } | |
37 | ||
3ee6f61c | 38 | static __be32 * |
91f07168 | 39 | decode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
40 | { |
41 | time->tv_sec = ntohl(*p++); | |
42 | time->tv_nsec = ntohl(*p++); | |
43 | return p; | |
44 | } | |
45 | ||
3ee6f61c | 46 | static __be32 * |
91f07168 | 47 | decode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
48 | { |
49 | unsigned int size; | |
50 | fh_init(fhp, NFS3_FHSIZE); | |
51 | size = ntohl(*p++); | |
52 | if (size > NFS3_FHSIZE) | |
53 | return NULL; | |
54 | ||
55 | memcpy(&fhp->fh_handle.fh_base, p, size); | |
56 | fhp->fh_handle.fh_size = size; | |
57 | return p + XDR_QUADLEN(size); | |
58 | } | |
59 | ||
a257cdd0 | 60 | /* Helper function for NFSv3 ACL code */ |
91f07168 | 61 | __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
62 | { |
63 | return decode_fh(p, fhp); | |
64 | } | |
65 | ||
3ee6f61c | 66 | static __be32 * |
91f07168 | 67 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
68 | { |
69 | unsigned int size = fhp->fh_handle.fh_size; | |
70 | *p++ = htonl(size); | |
71 | if (size) p[XDR_QUADLEN(size)-1]=0; | |
72 | memcpy(p, &fhp->fh_handle.fh_base, size); | |
73 | return p + XDR_QUADLEN(size); | |
74 | } | |
75 | ||
76 | /* | |
77 | * Decode a file name and make sure that the path contains | |
78 | * no slashes or null bytes. | |
79 | */ | |
3ee6f61c | 80 | static __be32 * |
ee1a95b3 | 81 | decode_filename(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
82 | { |
83 | char *name; | |
ee1a95b3 | 84 | unsigned int i; |
1da177e4 LT |
85 | |
86 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { | |
87 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
88 | if (*name == '\0' || *name == '/') | |
89 | return NULL; | |
90 | } | |
91 | } | |
92 | ||
93 | return p; | |
94 | } | |
95 | ||
3ee6f61c | 96 | static __be32 * |
91f07168 | 97 | decode_sattr3(__be32 *p, struct iattr *iap) |
1da177e4 LT |
98 | { |
99 | u32 tmp; | |
100 | ||
101 | iap->ia_valid = 0; | |
102 | ||
103 | if (*p++) { | |
104 | iap->ia_valid |= ATTR_MODE; | |
105 | iap->ia_mode = ntohl(*p++); | |
106 | } | |
107 | if (*p++) { | |
108 | iap->ia_valid |= ATTR_UID; | |
109 | iap->ia_uid = ntohl(*p++); | |
110 | } | |
111 | if (*p++) { | |
112 | iap->ia_valid |= ATTR_GID; | |
113 | iap->ia_gid = ntohl(*p++); | |
114 | } | |
115 | if (*p++) { | |
116 | u64 newsize; | |
117 | ||
118 | iap->ia_valid |= ATTR_SIZE; | |
119 | p = xdr_decode_hyper(p, &newsize); | |
120 | if (newsize <= NFS_OFFSET_MAX) | |
121 | iap->ia_size = newsize; | |
122 | else | |
123 | iap->ia_size = NFS_OFFSET_MAX; | |
124 | } | |
125 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
126 | iap->ia_valid |= ATTR_ATIME; | |
127 | } else if (tmp == 2) { /* set to client time */ | |
128 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
129 | iap->ia_atime.tv_sec = ntohl(*p++); | |
130 | iap->ia_atime.tv_nsec = ntohl(*p++); | |
131 | } | |
132 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
133 | iap->ia_valid |= ATTR_MTIME; | |
134 | } else if (tmp == 2) { /* set to client time */ | |
135 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
136 | iap->ia_mtime.tv_sec = ntohl(*p++); | |
137 | iap->ia_mtime.tv_nsec = ntohl(*p++); | |
138 | } | |
139 | return p; | |
140 | } | |
141 | ||
af6a4e28 N |
142 | static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) |
143 | { | |
144 | u64 f; | |
145 | switch(fsid_source(fhp)) { | |
146 | default: | |
147 | case FSIDSOURCE_DEV: | |
148 | p = xdr_encode_hyper(p, (u64)huge_encode_dev | |
149 | (fhp->fh_dentry->d_inode->i_sb->s_dev)); | |
150 | break; | |
151 | case FSIDSOURCE_FSID: | |
152 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
153 | break; | |
154 | case FSIDSOURCE_UUID: | |
155 | f = ((u64*)fhp->fh_export->ex_uuid)[0]; | |
156 | f ^= ((u64*)fhp->fh_export->ex_uuid)[1]; | |
157 | p = xdr_encode_hyper(p, f); | |
158 | break; | |
159 | } | |
160 | return p; | |
161 | } | |
162 | ||
3ee6f61c | 163 | static __be32 * |
91f07168 | 164 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 165 | struct kstat *stat) |
1da177e4 | 166 | { |
a334de28 DS |
167 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
168 | *p++ = htonl((u32) stat->mode); | |
169 | *p++ = htonl((u32) stat->nlink); | |
e097258f EB |
170 | *p++ = htonl((u32) stat->uid); |
171 | *p++ = htonl((u32) stat->gid); | |
a334de28 | 172 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { |
1da177e4 LT |
173 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
174 | } else { | |
a334de28 | 175 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 176 | } |
a334de28 DS |
177 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
178 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
179 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
af6a4e28 | 180 | p = encode_fsid(p, fhp); |
40ee5dc6 | 181 | p = xdr_encode_hyper(p, stat->ino); |
a334de28 | 182 | p = encode_time3(p, &stat->atime); |
40ee5dc6 | 183 | p = encode_time3(p, &stat->mtime); |
a334de28 | 184 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
185 | |
186 | return p; | |
187 | } | |
188 | ||
3ee6f61c | 189 | static __be32 * |
91f07168 | 190 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 | 191 | { |
1da177e4 LT |
192 | /* Attributes to follow */ |
193 | *p++ = xdr_one; | |
40ee5dc6 | 194 | return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr); |
1da177e4 LT |
195 | } |
196 | ||
197 | /* | |
198 | * Encode post-operation attributes. | |
199 | * The inode may be NULL if the call failed because of a stale file | |
200 | * handle. In this case, no attributes are returned. | |
201 | */ | |
91f07168 AV |
202 | static __be32 * |
203 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
204 | { |
205 | struct dentry *dentry = fhp->fh_dentry; | |
072f62ed | 206 | if (dentry && dentry->d_inode) { |
a334de28 DS |
207 | int err; |
208 | struct kstat stat; | |
209 | ||
54775491 | 210 | err = vfs_getattr(fhp->fh_export->ex_path.mnt, dentry, &stat); |
a334de28 DS |
211 | if (!err) { |
212 | *p++ = xdr_one; /* attributes follow */ | |
40ee5dc6 | 213 | lease_get_mtime(dentry->d_inode, &stat.mtime); |
a334de28 DS |
214 | return encode_fattr3(rqstp, p, fhp, &stat); |
215 | } | |
1da177e4 LT |
216 | } |
217 | *p++ = xdr_zero; | |
218 | return p; | |
219 | } | |
220 | ||
a257cdd0 | 221 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
222 | __be32 * |
223 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
224 | { |
225 | return encode_post_op_attr(rqstp, p, fhp); | |
226 | } | |
227 | ||
1da177e4 LT |
228 | /* |
229 | * Enocde weak cache consistency data | |
230 | */ | |
91f07168 AV |
231 | static __be32 * |
232 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
233 | { |
234 | struct dentry *dentry = fhp->fh_dentry; | |
235 | ||
236 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
237 | if (fhp->fh_pre_saved) { | |
238 | *p++ = xdr_one; | |
239 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
240 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
241 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
242 | } else { | |
243 | *p++ = xdr_zero; | |
244 | } | |
245 | return encode_saved_post_attr(rqstp, p, fhp); | |
246 | } | |
247 | /* no pre- or post-attrs */ | |
248 | *p++ = xdr_zero; | |
249 | return encode_post_op_attr(rqstp, p, fhp); | |
250 | } | |
251 | ||
40ee5dc6 PS |
252 | /* |
253 | * Fill in the post_op attr for the wcc data | |
254 | */ | |
255 | void fill_post_wcc(struct svc_fh *fhp) | |
256 | { | |
257 | int err; | |
258 | ||
259 | if (fhp->fh_post_saved) | |
260 | printk("nfsd: inode locked twice during operation.\n"); | |
261 | ||
54775491 | 262 | err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry, |
40ee5dc6 | 263 | &fhp->fh_post_attr); |
c654b8a9 | 264 | fhp->fh_post_change = fhp->fh_dentry->d_inode->i_version; |
c1ac3ffc | 265 | if (err) { |
40ee5dc6 | 266 | fhp->fh_post_saved = 0; |
c1ac3ffc NB |
267 | /* Grab the ctime anyway - set_change_info might use it */ |
268 | fhp->fh_post_attr.ctime = fhp->fh_dentry->d_inode->i_ctime; | |
269 | } else | |
40ee5dc6 PS |
270 | fhp->fh_post_saved = 1; |
271 | } | |
1da177e4 LT |
272 | |
273 | /* | |
274 | * XDR decode functions | |
275 | */ | |
276 | int | |
91f07168 | 277 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
278 | { |
279 | if (!(p = decode_fh(p, &args->fh))) | |
280 | return 0; | |
281 | return xdr_argsize_check(rqstp, p); | |
282 | } | |
283 | ||
284 | int | |
91f07168 | 285 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
286 | struct nfsd3_sattrargs *args) |
287 | { | |
072f62ed | 288 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 289 | return 0; |
072f62ed | 290 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
291 | |
292 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
293 | struct timespec time; | |
294 | p = decode_time3(p, &time); | |
295 | args->guardtime = time.tv_sec; | |
296 | } | |
297 | ||
298 | return xdr_argsize_check(rqstp, p); | |
299 | } | |
300 | ||
301 | int | |
91f07168 | 302 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
303 | struct nfsd3_diropargs *args) |
304 | { | |
305 | if (!(p = decode_fh(p, &args->fh)) | |
306 | || !(p = decode_filename(p, &args->name, &args->len))) | |
307 | return 0; | |
308 | ||
309 | return xdr_argsize_check(rqstp, p); | |
310 | } | |
311 | ||
312 | int | |
91f07168 | 313 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
314 | struct nfsd3_accessargs *args) |
315 | { | |
316 | if (!(p = decode_fh(p, &args->fh))) | |
317 | return 0; | |
318 | args->access = ntohl(*p++); | |
319 | ||
320 | return xdr_argsize_check(rqstp, p); | |
321 | } | |
322 | ||
323 | int | |
91f07168 | 324 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
325 | struct nfsd3_readargs *args) |
326 | { | |
327 | unsigned int len; | |
afc59400 | 328 | int v; |
7adae489 | 329 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 330 | |
072f62ed | 331 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 332 | return 0; |
072f62ed | 333 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
334 | |
335 | len = args->count = ntohl(*p++); | |
336 | ||
7adae489 GB |
337 | if (len > max_blocksize) |
338 | len = max_blocksize; | |
1da177e4 LT |
339 | |
340 | /* set up the kvec */ | |
341 | v=0; | |
342 | while (len > 0) { | |
afc59400 BF |
343 | struct page *p = *(rqstp->rq_next_page++); |
344 | ||
345 | rqstp->rq_vec[v].iov_base = page_address(p); | |
3cc03b16 N |
346 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; |
347 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
348 | v++; |
349 | } | |
350 | args->vlen = v; | |
351 | return xdr_argsize_check(rqstp, p); | |
352 | } | |
353 | ||
354 | int | |
91f07168 | 355 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
356 | struct nfsd3_writeargs *args) |
357 | { | |
f34b9568 | 358 | unsigned int len, v, hdr, dlen; |
7adae489 | 359 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 360 | |
072f62ed | 361 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 362 | return 0; |
072f62ed | 363 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
364 | |
365 | args->count = ntohl(*p++); | |
366 | args->stable = ntohl(*p++); | |
367 | len = args->len = ntohl(*p++); | |
f34b9568 PS |
368 | /* |
369 | * The count must equal the amount of data passed. | |
370 | */ | |
371 | if (args->count != args->len) | |
372 | return 0; | |
1da177e4 | 373 | |
f34b9568 PS |
374 | /* |
375 | * Check to make sure that we got the right number of | |
376 | * bytes. | |
f34b9568 | 377 | */ |
1da177e4 | 378 | hdr = (void*)p - rqstp->rq_arg.head[0].iov_base; |
072f62ed N |
379 | dlen = rqstp->rq_arg.head[0].iov_len + rqstp->rq_arg.page_len |
380 | - hdr; | |
f34b9568 PS |
381 | /* |
382 | * Round the length of the data which was specified up to | |
383 | * the next multiple of XDR units and then compare that | |
384 | * against the length which was actually received. | |
ba67a39e N |
385 | * Note that when RPCSEC/GSS (for example) is used, the |
386 | * data buffer can be padded so dlen might be larger | |
387 | * than required. It must never be smaller. | |
f34b9568 | 388 | */ |
ba67a39e | 389 | if (dlen < XDR_QUADLEN(len)*4) |
1da177e4 LT |
390 | return 0; |
391 | ||
f34b9568 PS |
392 | if (args->count > max_blocksize) { |
393 | args->count = max_blocksize; | |
394 | len = args->len = max_blocksize; | |
395 | } | |
3cc03b16 N |
396 | rqstp->rq_vec[0].iov_base = (void*)p; |
397 | rqstp->rq_vec[0].iov_len = rqstp->rq_arg.head[0].iov_len - hdr; | |
f34b9568 | 398 | v = 0; |
3cc03b16 N |
399 | while (len > rqstp->rq_vec[v].iov_len) { |
400 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 | 401 | v++; |
3cc03b16 N |
402 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_pages[v]); |
403 | rqstp->rq_vec[v].iov_len = PAGE_SIZE; | |
1da177e4 | 404 | } |
3cc03b16 | 405 | rqstp->rq_vec[v].iov_len = len; |
f34b9568 PS |
406 | args->vlen = v + 1; |
407 | return 1; | |
1da177e4 LT |
408 | } |
409 | ||
410 | int | |
91f07168 | 411 | nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
412 | struct nfsd3_createargs *args) |
413 | { | |
414 | if (!(p = decode_fh(p, &args->fh)) | |
415 | || !(p = decode_filename(p, &args->name, &args->len))) | |
416 | return 0; | |
417 | ||
418 | switch (args->createmode = ntohl(*p++)) { | |
419 | case NFS3_CREATE_UNCHECKED: | |
420 | case NFS3_CREATE_GUARDED: | |
072f62ed | 421 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
422 | break; |
423 | case NFS3_CREATE_EXCLUSIVE: | |
424 | args->verf = p; | |
425 | p += 2; | |
426 | break; | |
427 | default: | |
428 | return 0; | |
429 | } | |
430 | ||
431 | return xdr_argsize_check(rqstp, p); | |
432 | } | |
433 | int | |
91f07168 | 434 | nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
435 | struct nfsd3_createargs *args) |
436 | { | |
072f62ed N |
437 | if (!(p = decode_fh(p, &args->fh)) || |
438 | !(p = decode_filename(p, &args->name, &args->len))) | |
1da177e4 | 439 | return 0; |
072f62ed | 440 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
441 | |
442 | return xdr_argsize_check(rqstp, p); | |
443 | } | |
444 | ||
445 | int | |
91f07168 | 446 | nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
447 | struct nfsd3_symlinkargs *args) |
448 | { | |
a628f667 | 449 | unsigned int len, avail; |
1da177e4 LT |
450 | char *old, *new; |
451 | struct kvec *vec; | |
452 | ||
072f62ed N |
453 | if (!(p = decode_fh(p, &args->ffh)) || |
454 | !(p = decode_filename(p, &args->fname, &args->flen)) | |
1da177e4 LT |
455 | ) |
456 | return 0; | |
072f62ed N |
457 | p = decode_sattr3(p, &args->attrs); |
458 | ||
1da177e4 LT |
459 | /* now decode the pathname, which might be larger than the first page. |
460 | * As we have to check for nul's anyway, we copy it into a new page | |
461 | * This page appears in the rq_res.pages list, but as pages_len is always | |
462 | * 0, it won't get in the way | |
463 | */ | |
1da177e4 LT |
464 | len = ntohl(*p++); |
465 | if (len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE) | |
466 | return 0; | |
afc59400 | 467 | args->tname = new = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
468 | args->tlen = len; |
469 | /* first copy and check from the first page */ | |
470 | old = (char*)p; | |
471 | vec = &rqstp->rq_arg.head[0]; | |
472 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
473 | while (len && avail && *old) { | |
474 | *new++ = *old++; | |
475 | len--; | |
476 | avail--; | |
477 | } | |
478 | /* now copy next page if there is one */ | |
479 | if (len && !avail && rqstp->rq_arg.page_len) { | |
480 | avail = rqstp->rq_arg.page_len; | |
a628f667 CL |
481 | if (avail > PAGE_SIZE) |
482 | avail = PAGE_SIZE; | |
1da177e4 LT |
483 | old = page_address(rqstp->rq_arg.pages[0]); |
484 | } | |
485 | while (len && avail && *old) { | |
486 | *new++ = *old++; | |
487 | len--; | |
488 | avail--; | |
489 | } | |
490 | *new = '\0'; | |
491 | if (len) | |
492 | return 0; | |
493 | ||
494 | return 1; | |
495 | } | |
496 | ||
497 | int | |
91f07168 | 498 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
499 | struct nfsd3_mknodargs *args) |
500 | { | |
501 | if (!(p = decode_fh(p, &args->fh)) | |
502 | || !(p = decode_filename(p, &args->name, &args->len))) | |
503 | return 0; | |
504 | ||
505 | args->ftype = ntohl(*p++); | |
506 | ||
507 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
072f62ed N |
508 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) |
509 | p = decode_sattr3(p, &args->attrs); | |
1da177e4 LT |
510 | |
511 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
512 | args->major = ntohl(*p++); | |
513 | args->minor = ntohl(*p++); | |
514 | } | |
515 | ||
516 | return xdr_argsize_check(rqstp, p); | |
517 | } | |
518 | ||
519 | int | |
91f07168 | 520 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
521 | struct nfsd3_renameargs *args) |
522 | { | |
523 | if (!(p = decode_fh(p, &args->ffh)) | |
524 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
525 | || !(p = decode_fh(p, &args->tfh)) | |
526 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
527 | return 0; | |
528 | ||
529 | return xdr_argsize_check(rqstp, p); | |
530 | } | |
531 | ||
532 | int | |
91f07168 | 533 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
534 | struct nfsd3_readlinkargs *args) |
535 | { | |
536 | if (!(p = decode_fh(p, &args->fh))) | |
537 | return 0; | |
afc59400 | 538 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
539 | |
540 | return xdr_argsize_check(rqstp, p); | |
541 | } | |
542 | ||
543 | int | |
91f07168 | 544 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
545 | struct nfsd3_linkargs *args) |
546 | { | |
547 | if (!(p = decode_fh(p, &args->ffh)) | |
548 | || !(p = decode_fh(p, &args->tfh)) | |
549 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
550 | return 0; | |
551 | ||
552 | return xdr_argsize_check(rqstp, p); | |
553 | } | |
554 | ||
555 | int | |
91f07168 | 556 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
557 | struct nfsd3_readdirargs *args) |
558 | { | |
559 | if (!(p = decode_fh(p, &args->fh))) | |
560 | return 0; | |
561 | p = xdr_decode_hyper(p, &args->cookie); | |
562 | args->verf = p; p += 2; | |
563 | args->dircount = ~0; | |
564 | args->count = ntohl(*p++); | |
565 | ||
566 | if (args->count > PAGE_SIZE) | |
567 | args->count = PAGE_SIZE; | |
568 | ||
afc59400 | 569 | args->buffer = page_address(*(rqstp->rq_next_page++)); |
1da177e4 LT |
570 | |
571 | return xdr_argsize_check(rqstp, p); | |
572 | } | |
573 | ||
574 | int | |
91f07168 | 575 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
576 | struct nfsd3_readdirargs *args) |
577 | { | |
afc59400 | 578 | int len; |
7adae489 | 579 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
580 | |
581 | if (!(p = decode_fh(p, &args->fh))) | |
582 | return 0; | |
583 | p = xdr_decode_hyper(p, &args->cookie); | |
584 | args->verf = p; p += 2; | |
585 | args->dircount = ntohl(*p++); | |
586 | args->count = ntohl(*p++); | |
587 | ||
7adae489 | 588 | len = (args->count > max_blocksize) ? max_blocksize : |
1da177e4 LT |
589 | args->count; |
590 | args->count = len; | |
591 | ||
592 | while (len > 0) { | |
afc59400 | 593 | struct page *p = *(rqstp->rq_next_page++); |
1da177e4 | 594 | if (!args->buffer) |
afc59400 | 595 | args->buffer = page_address(p); |
1da177e4 LT |
596 | len -= PAGE_SIZE; |
597 | } | |
598 | ||
599 | return xdr_argsize_check(rqstp, p); | |
600 | } | |
601 | ||
602 | int | |
91f07168 | 603 | nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
604 | struct nfsd3_commitargs *args) |
605 | { | |
606 | if (!(p = decode_fh(p, &args->fh))) | |
607 | return 0; | |
608 | p = xdr_decode_hyper(p, &args->offset); | |
609 | args->count = ntohl(*p++); | |
610 | ||
611 | return xdr_argsize_check(rqstp, p); | |
612 | } | |
613 | ||
614 | /* | |
615 | * XDR encode functions | |
616 | */ | |
617 | /* | |
618 | * There must be an encoding function for void results so svc_process | |
619 | * will work properly. | |
620 | */ | |
621 | int | |
91f07168 | 622 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
623 | { |
624 | return xdr_ressize_check(rqstp, p); | |
625 | } | |
626 | ||
627 | /* GETATTR */ | |
628 | int | |
91f07168 | 629 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
630 | struct nfsd3_attrstat *resp) |
631 | { | |
40ee5dc6 PS |
632 | if (resp->status == 0) { |
633 | lease_get_mtime(resp->fh.fh_dentry->d_inode, | |
634 | &resp->stat.mtime); | |
a334de28 | 635 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
40ee5dc6 | 636 | } |
1da177e4 LT |
637 | return xdr_ressize_check(rqstp, p); |
638 | } | |
639 | ||
640 | /* SETATTR, REMOVE, RMDIR */ | |
641 | int | |
91f07168 | 642 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
643 | struct nfsd3_attrstat *resp) |
644 | { | |
645 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
646 | return xdr_ressize_check(rqstp, p); | |
647 | } | |
648 | ||
649 | /* LOOKUP */ | |
650 | int | |
91f07168 | 651 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
652 | struct nfsd3_diropres *resp) |
653 | { | |
654 | if (resp->status == 0) { | |
655 | p = encode_fh(p, &resp->fh); | |
656 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
657 | } | |
658 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
659 | return xdr_ressize_check(rqstp, p); | |
660 | } | |
661 | ||
662 | /* ACCESS */ | |
663 | int | |
91f07168 | 664 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
665 | struct nfsd3_accessres *resp) |
666 | { | |
667 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
668 | if (resp->status == 0) | |
669 | *p++ = htonl(resp->access); | |
670 | return xdr_ressize_check(rqstp, p); | |
671 | } | |
672 | ||
673 | /* READLINK */ | |
674 | int | |
91f07168 | 675 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
676 | struct nfsd3_readlinkres *resp) |
677 | { | |
678 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
679 | if (resp->status == 0) { | |
680 | *p++ = htonl(resp->len); | |
681 | xdr_ressize_check(rqstp, p); | |
682 | rqstp->rq_res.page_len = resp->len; | |
683 | if (resp->len & 3) { | |
684 | /* need to pad the tail */ | |
1da177e4 LT |
685 | rqstp->rq_res.tail[0].iov_base = p; |
686 | *p = 0; | |
687 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
688 | } | |
689 | return 1; | |
690 | } else | |
691 | return xdr_ressize_check(rqstp, p); | |
692 | } | |
693 | ||
694 | /* READ */ | |
695 | int | |
91f07168 | 696 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
697 | struct nfsd3_readres *resp) |
698 | { | |
699 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
700 | if (resp->status == 0) { | |
701 | *p++ = htonl(resp->count); | |
702 | *p++ = htonl(resp->eof); | |
703 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
704 | xdr_ressize_check(rqstp, p); | |
25985edc | 705 | /* now update rqstp->rq_res to reflect data as well */ |
1da177e4 LT |
706 | rqstp->rq_res.page_len = resp->count; |
707 | if (resp->count & 3) { | |
708 | /* need to pad the tail */ | |
1da177e4 LT |
709 | rqstp->rq_res.tail[0].iov_base = p; |
710 | *p = 0; | |
711 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
712 | } | |
713 | return 1; | |
714 | } else | |
715 | return xdr_ressize_check(rqstp, p); | |
716 | } | |
717 | ||
718 | /* WRITE */ | |
719 | int | |
91f07168 | 720 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
721 | struct nfsd3_writeres *resp) |
722 | { | |
b9c0ef85 SK |
723 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
724 | ||
1da177e4 LT |
725 | p = encode_wcc_data(rqstp, p, &resp->fh); |
726 | if (resp->status == 0) { | |
727 | *p++ = htonl(resp->count); | |
728 | *p++ = htonl(resp->committed); | |
b9c0ef85 SK |
729 | *p++ = htonl(nn->nfssvc_boot.tv_sec); |
730 | *p++ = htonl(nn->nfssvc_boot.tv_usec); | |
1da177e4 LT |
731 | } |
732 | return xdr_ressize_check(rqstp, p); | |
733 | } | |
734 | ||
735 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
736 | int | |
91f07168 | 737 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
738 | struct nfsd3_diropres *resp) |
739 | { | |
740 | if (resp->status == 0) { | |
741 | *p++ = xdr_one; | |
742 | p = encode_fh(p, &resp->fh); | |
743 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
744 | } | |
745 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
746 | return xdr_ressize_check(rqstp, p); | |
747 | } | |
748 | ||
749 | /* RENAME */ | |
750 | int | |
91f07168 | 751 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
752 | struct nfsd3_renameres *resp) |
753 | { | |
754 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
755 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
756 | return xdr_ressize_check(rqstp, p); | |
757 | } | |
758 | ||
759 | /* LINK */ | |
760 | int | |
91f07168 | 761 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
762 | struct nfsd3_linkres *resp) |
763 | { | |
764 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
765 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
766 | return xdr_ressize_check(rqstp, p); | |
767 | } | |
768 | ||
769 | /* READDIR */ | |
770 | int | |
91f07168 | 771 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
772 | struct nfsd3_readdirres *resp) |
773 | { | |
774 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
775 | ||
776 | if (resp->status == 0) { | |
777 | /* stupid readdir cookie */ | |
778 | memcpy(p, resp->verf, 8); p += 2; | |
779 | xdr_ressize_check(rqstp, p); | |
780 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
781 | return 1; /*No room for trailer */ | |
782 | rqstp->rq_res.page_len = (resp->count) << 2; | |
783 | ||
784 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
785 | rqstp->rq_res.tail[0].iov_base = p; |
786 | *p++ = 0; /* no more entries */ | |
787 | *p++ = htonl(resp->common.err == nfserr_eof); | |
788 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
789 | return 1; | |
790 | } else | |
791 | return xdr_ressize_check(rqstp, p); | |
792 | } | |
793 | ||
3ee6f61c | 794 | static __be32 * |
91f07168 | 795 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
40ee5dc6 | 796 | int namlen, u64 ino) |
1da177e4 LT |
797 | { |
798 | *p++ = xdr_one; /* mark entry present */ | |
799 | p = xdr_encode_hyper(p, ino); /* file id */ | |
800 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
801 | ||
802 | cd->offset = p; /* remember pointer */ | |
803 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
804 | ||
805 | return p; | |
806 | } | |
807 | ||
efe39651 | 808 | static __be32 |
1da177e4 LT |
809 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, |
810 | const char *name, int namlen) | |
811 | { | |
812 | struct svc_export *exp; | |
813 | struct dentry *dparent, *dchild; | |
efe39651 | 814 | __be32 rv = nfserr_noent; |
1da177e4 LT |
815 | |
816 | dparent = cd->fh.fh_dentry; | |
817 | exp = cd->fh.fh_export; | |
818 | ||
1da177e4 LT |
819 | if (isdotent(name, namlen)) { |
820 | if (namlen == 2) { | |
821 | dchild = dget_parent(dparent); | |
efe39651 AV |
822 | /* filesystem root - cannot return filehandle for ".." */ |
823 | if (dchild == dparent) | |
824 | goto out; | |
1da177e4 LT |
825 | } else |
826 | dchild = dget(dparent); | |
827 | } else | |
828 | dchild = lookup_one_len(name, dparent, namlen); | |
829 | if (IS_ERR(dchild)) | |
efe39651 | 830 | return rv; |
8177e6d6 BF |
831 | if (d_mountpoint(dchild)) |
832 | goto out; | |
8177e6d6 BF |
833 | if (!dchild->d_inode) |
834 | goto out; | |
efe39651 | 835 | rv = fh_compose(fhp, exp, dchild, &cd->fh); |
8177e6d6 | 836 | out: |
1da177e4 LT |
837 | dput(dchild); |
838 | return rv; | |
839 | } | |
840 | ||
c47d832b | 841 | static __be32 *encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, int namlen) |
8177e6d6 BF |
842 | { |
843 | struct svc_fh fh; | |
efe39651 | 844 | __be32 err; |
8177e6d6 | 845 | |
aed100fa | 846 | fh_init(&fh, NFS3_FHSIZE); |
8177e6d6 BF |
847 | err = compose_entry_fh(cd, &fh, name, namlen); |
848 | if (err) { | |
849 | *p++ = 0; | |
850 | *p++ = 0; | |
aed100fa | 851 | goto out; |
8177e6d6 BF |
852 | } |
853 | p = encode_post_op_attr(cd->rqstp, p, &fh); | |
854 | *p++ = xdr_one; /* yes, a file handle follows */ | |
855 | p = encode_fh(p, &fh); | |
aed100fa | 856 | out: |
8177e6d6 BF |
857 | fh_put(&fh); |
858 | return p; | |
859 | } | |
860 | ||
1da177e4 LT |
861 | /* |
862 | * Encode a directory entry. This one works for both normal readdir | |
863 | * and readdirplus. | |
864 | * The normal readdir reply requires 2 (fileid) + 1 (stringlen) | |
865 | * + string + 2 (cookie) + 1 (next) words, i.e. 6 + strlen. | |
866 | * | |
867 | * The readdirplus baggage is 1+21 words for post_op_attr, plus the | |
868 | * file handle. | |
869 | */ | |
870 | ||
871 | #define NFS3_ENTRY_BAGGAGE (2 + 1 + 2 + 1) | |
872 | #define NFS3_ENTRYPLUS_BAGGAGE (1 + 21 + 1 + (NFS3_FHSIZE >> 2)) | |
873 | static int | |
598b9a56 | 874 | encode_entry(struct readdir_cd *ccd, const char *name, int namlen, |
40ee5dc6 | 875 | loff_t offset, u64 ino, unsigned int d_type, int plus) |
1da177e4 LT |
876 | { |
877 | struct nfsd3_readdirres *cd = container_of(ccd, struct nfsd3_readdirres, | |
878 | common); | |
91f07168 | 879 | __be32 *p = cd->buffer; |
1da177e4 | 880 | caddr_t curr_page_addr = NULL; |
afc59400 | 881 | struct page ** page; |
1da177e4 LT |
882 | int slen; /* string (name) length */ |
883 | int elen; /* estimated entry length in words */ | |
884 | int num_entry_words = 0; /* actual number of words */ | |
885 | ||
886 | if (cd->offset) { | |
887 | u64 offset64 = offset; | |
888 | ||
889 | if (unlikely(cd->offset1)) { | |
890 | /* we ended up with offset on a page boundary */ | |
891 | *cd->offset = htonl(offset64 >> 32); | |
892 | *cd->offset1 = htonl(offset64 & 0xffffffff); | |
893 | cd->offset1 = NULL; | |
894 | } else { | |
598b9a56 | 895 | xdr_encode_hyper(cd->offset, offset64); |
1da177e4 LT |
896 | } |
897 | } | |
898 | ||
899 | /* | |
900 | dprintk("encode_entry(%.*s @%ld%s)\n", | |
901 | namlen, name, (long) offset, plus? " plus" : ""); | |
902 | */ | |
903 | ||
904 | /* truncate filename if too long */ | |
905 | if (namlen > NFS3_MAXNAMLEN) | |
906 | namlen = NFS3_MAXNAMLEN; | |
907 | ||
908 | slen = XDR_QUADLEN(namlen); | |
909 | elen = slen + NFS3_ENTRY_BAGGAGE | |
910 | + (plus? NFS3_ENTRYPLUS_BAGGAGE : 0); | |
911 | ||
912 | if (cd->buflen < elen) { | |
913 | cd->common.err = nfserr_toosmall; | |
914 | return -EINVAL; | |
915 | } | |
916 | ||
917 | /* determine which page in rq_respages[] we are currently filling */ | |
afc59400 BF |
918 | for (page = cd->rqstp->rq_respages + 1; |
919 | page < cd->rqstp->rq_next_page; page++) { | |
920 | curr_page_addr = page_address(*page); | |
1da177e4 LT |
921 | |
922 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
923 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
924 | break; | |
925 | } | |
926 | ||
927 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
928 | /* encode entry in current page */ | |
929 | ||
930 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
931 | ||
8177e6d6 BF |
932 | if (plus) |
933 | p = encode_entryplus_baggage(cd, p, name, namlen); | |
1da177e4 | 934 | num_entry_words = p - cd->buffer; |
afc59400 | 935 | } else if (*(page+1) != NULL) { |
1da177e4 LT |
936 | /* temporarily encode entry into next page, then move back to |
937 | * current and next page in rq_respages[] */ | |
91f07168 | 938 | __be32 *p1, *tmp; |
1da177e4 LT |
939 | int len1, len2; |
940 | ||
941 | /* grab next page for temporary storage of entry */ | |
afc59400 | 942 | p1 = tmp = page_address(*(page+1)); |
1da177e4 LT |
943 | |
944 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
945 | ||
8177e6d6 | 946 | if (plus) |
479c2553 | 947 | p1 = encode_entryplus_baggage(cd, p1, name, namlen); |
1da177e4 LT |
948 | |
949 | /* determine entry word length and lengths to go in pages */ | |
950 | num_entry_words = p1 - tmp; | |
951 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
952 | if ((num_entry_words << 2) < len1) { | |
953 | /* the actual number of words in the entry is less | |
954 | * than elen and can still fit in the current page | |
955 | */ | |
956 | memmove(p, tmp, num_entry_words << 2); | |
957 | p += num_entry_words; | |
958 | ||
959 | /* update offset */ | |
960 | cd->offset = cd->buffer + (cd->offset - tmp); | |
961 | } else { | |
962 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
963 | ||
964 | /* update pointer to offset location. | |
965 | * This is a 64bit quantity, so we need to | |
966 | * deal with 3 cases: | |
967 | * - entirely in first page | |
968 | * - entirely in second page | |
969 | * - 4 bytes in each page | |
970 | */ | |
971 | if (offset_r + 8 <= len1) { | |
972 | cd->offset = p + (cd->offset - tmp); | |
973 | } else if (offset_r >= len1) { | |
974 | cd->offset -= len1 >> 2; | |
975 | } else { | |
976 | /* sitting on the fence */ | |
977 | BUG_ON(offset_r != len1 - 4); | |
978 | cd->offset = p + (cd->offset - tmp); | |
979 | cd->offset1 = tmp; | |
980 | } | |
981 | ||
982 | len2 = (num_entry_words << 2) - len1; | |
983 | ||
984 | /* move from temp page to current and next pages */ | |
985 | memmove(p, tmp, len1); | |
986 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
987 | ||
988 | p = tmp + (len2 >> 2); | |
989 | } | |
990 | } | |
991 | else { | |
992 | cd->common.err = nfserr_toosmall; | |
993 | return -EINVAL; | |
994 | } | |
995 | ||
996 | cd->buflen -= num_entry_words; | |
997 | cd->buffer = p; | |
998 | cd->common.err = nfs_ok; | |
999 | return 0; | |
1000 | ||
1001 | } | |
1002 | ||
1003 | int | |
a0ad13ef N |
1004 | nfs3svc_encode_entry(void *cd, const char *name, |
1005 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
1006 | { |
1007 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
1008 | } | |
1009 | ||
1010 | int | |
a0ad13ef N |
1011 | nfs3svc_encode_entry_plus(void *cd, const char *name, |
1012 | int namlen, loff_t offset, u64 ino, | |
1013 | unsigned int d_type) | |
1da177e4 LT |
1014 | { |
1015 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1016 | } | |
1017 | ||
1018 | /* FSSTAT */ | |
1019 | int | |
91f07168 | 1020 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1021 | struct nfsd3_fsstatres *resp) |
1022 | { | |
1023 | struct kstatfs *s = &resp->stats; | |
1024 | u64 bs = s->f_bsize; | |
1025 | ||
1026 | *p++ = xdr_zero; /* no post_op_attr */ | |
1027 | ||
1028 | if (resp->status == 0) { | |
1029 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1030 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1031 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1032 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1033 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1034 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1035 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1036 | } | |
1037 | return xdr_ressize_check(rqstp, p); | |
1038 | } | |
1039 | ||
1040 | /* FSINFO */ | |
1041 | int | |
91f07168 | 1042 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1043 | struct nfsd3_fsinfores *resp) |
1044 | { | |
1045 | *p++ = xdr_zero; /* no post_op_attr */ | |
1046 | ||
1047 | if (resp->status == 0) { | |
1048 | *p++ = htonl(resp->f_rtmax); | |
1049 | *p++ = htonl(resp->f_rtpref); | |
1050 | *p++ = htonl(resp->f_rtmult); | |
1051 | *p++ = htonl(resp->f_wtmax); | |
1052 | *p++ = htonl(resp->f_wtpref); | |
1053 | *p++ = htonl(resp->f_wtmult); | |
1054 | *p++ = htonl(resp->f_dtpref); | |
1055 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1056 | *p++ = xdr_one; | |
1057 | *p++ = xdr_zero; | |
1058 | *p++ = htonl(resp->f_properties); | |
1059 | } | |
1060 | ||
1061 | return xdr_ressize_check(rqstp, p); | |
1062 | } | |
1063 | ||
1064 | /* PATHCONF */ | |
1065 | int | |
91f07168 | 1066 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1067 | struct nfsd3_pathconfres *resp) |
1068 | { | |
1069 | *p++ = xdr_zero; /* no post_op_attr */ | |
1070 | ||
1071 | if (resp->status == 0) { | |
1072 | *p++ = htonl(resp->p_link_max); | |
1073 | *p++ = htonl(resp->p_name_max); | |
1074 | *p++ = htonl(resp->p_no_trunc); | |
1075 | *p++ = htonl(resp->p_chown_restricted); | |
1076 | *p++ = htonl(resp->p_case_insensitive); | |
1077 | *p++ = htonl(resp->p_case_preserving); | |
1078 | } | |
1079 | ||
1080 | return xdr_ressize_check(rqstp, p); | |
1081 | } | |
1082 | ||
1083 | /* COMMIT */ | |
1084 | int | |
91f07168 | 1085 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1086 | struct nfsd3_commitres *resp) |
1087 | { | |
b9c0ef85 SK |
1088 | struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); |
1089 | ||
1da177e4 LT |
1090 | p = encode_wcc_data(rqstp, p, &resp->fh); |
1091 | /* Write verifier */ | |
1092 | if (resp->status == 0) { | |
b9c0ef85 SK |
1093 | *p++ = htonl(nn->nfssvc_boot.tv_sec); |
1094 | *p++ = htonl(nn->nfssvc_boot.tv_usec); | |
1da177e4 LT |
1095 | } |
1096 | return xdr_ressize_check(rqstp, p); | |
1097 | } | |
1098 | ||
1099 | /* | |
1100 | * XDR release functions | |
1101 | */ | |
1102 | int | |
91f07168 | 1103 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1104 | struct nfsd3_attrstat *resp) |
1105 | { | |
1106 | fh_put(&resp->fh); | |
1107 | return 1; | |
1108 | } | |
1109 | ||
1110 | int | |
91f07168 | 1111 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1112 | struct nfsd3_fhandle_pair *resp) |
1113 | { | |
1114 | fh_put(&resp->fh1); | |
1115 | fh_put(&resp->fh2); | |
1116 | return 1; | |
1117 | } |