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> | |
2e8138a2 | 24 | #include "auth.h" |
1da177e4 LT |
25 | |
26 | #define NFSDDBG_FACILITY NFSDDBG_XDR | |
27 | ||
1da177e4 LT |
28 | |
29 | /* | |
30 | * Mapping of S_IF* types to NFS file types | |
31 | */ | |
32 | static u32 nfs3_ftypes[] = { | |
33 | NF3NON, NF3FIFO, NF3CHR, NF3BAD, | |
34 | NF3DIR, NF3BAD, NF3BLK, NF3BAD, | |
35 | NF3REG, NF3BAD, NF3LNK, NF3BAD, | |
36 | NF3SOCK, NF3BAD, NF3LNK, NF3BAD, | |
37 | }; | |
38 | ||
39 | /* | |
40 | * XDR functions for basic NFS types | |
41 | */ | |
3ee6f61c | 42 | static __be32 * |
91f07168 | 43 | encode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
44 | { |
45 | *p++ = htonl((u32) time->tv_sec); *p++ = htonl(time->tv_nsec); | |
46 | return p; | |
47 | } | |
48 | ||
3ee6f61c | 49 | static __be32 * |
91f07168 | 50 | decode_time3(__be32 *p, struct timespec *time) |
1da177e4 LT |
51 | { |
52 | time->tv_sec = ntohl(*p++); | |
53 | time->tv_nsec = ntohl(*p++); | |
54 | return p; | |
55 | } | |
56 | ||
3ee6f61c | 57 | static __be32 * |
91f07168 | 58 | decode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
59 | { |
60 | unsigned int size; | |
61 | fh_init(fhp, NFS3_FHSIZE); | |
62 | size = ntohl(*p++); | |
63 | if (size > NFS3_FHSIZE) | |
64 | return NULL; | |
65 | ||
66 | memcpy(&fhp->fh_handle.fh_base, p, size); | |
67 | fhp->fh_handle.fh_size = size; | |
68 | return p + XDR_QUADLEN(size); | |
69 | } | |
70 | ||
a257cdd0 | 71 | /* Helper function for NFSv3 ACL code */ |
91f07168 | 72 | __be32 *nfs3svc_decode_fh(__be32 *p, struct svc_fh *fhp) |
a257cdd0 AG |
73 | { |
74 | return decode_fh(p, fhp); | |
75 | } | |
76 | ||
3ee6f61c | 77 | static __be32 * |
91f07168 | 78 | encode_fh(__be32 *p, struct svc_fh *fhp) |
1da177e4 LT |
79 | { |
80 | unsigned int size = fhp->fh_handle.fh_size; | |
81 | *p++ = htonl(size); | |
82 | if (size) p[XDR_QUADLEN(size)-1]=0; | |
83 | memcpy(p, &fhp->fh_handle.fh_base, size); | |
84 | return p + XDR_QUADLEN(size); | |
85 | } | |
86 | ||
87 | /* | |
88 | * Decode a file name and make sure that the path contains | |
89 | * no slashes or null bytes. | |
90 | */ | |
3ee6f61c | 91 | static __be32 * |
ee1a95b3 | 92 | decode_filename(__be32 *p, char **namp, unsigned int *lenp) |
1da177e4 LT |
93 | { |
94 | char *name; | |
ee1a95b3 | 95 | unsigned int i; |
1da177e4 LT |
96 | |
97 | if ((p = xdr_decode_string_inplace(p, namp, lenp, NFS3_MAXNAMLEN)) != NULL) { | |
98 | for (i = 0, name = *namp; i < *lenp; i++, name++) { | |
99 | if (*name == '\0' || *name == '/') | |
100 | return NULL; | |
101 | } | |
102 | } | |
103 | ||
104 | return p; | |
105 | } | |
106 | ||
3ee6f61c | 107 | static __be32 * |
91f07168 | 108 | decode_sattr3(__be32 *p, struct iattr *iap) |
1da177e4 LT |
109 | { |
110 | u32 tmp; | |
111 | ||
112 | iap->ia_valid = 0; | |
113 | ||
114 | if (*p++) { | |
115 | iap->ia_valid |= ATTR_MODE; | |
116 | iap->ia_mode = ntohl(*p++); | |
117 | } | |
118 | if (*p++) { | |
119 | iap->ia_valid |= ATTR_UID; | |
120 | iap->ia_uid = ntohl(*p++); | |
121 | } | |
122 | if (*p++) { | |
123 | iap->ia_valid |= ATTR_GID; | |
124 | iap->ia_gid = ntohl(*p++); | |
125 | } | |
126 | if (*p++) { | |
127 | u64 newsize; | |
128 | ||
129 | iap->ia_valid |= ATTR_SIZE; | |
130 | p = xdr_decode_hyper(p, &newsize); | |
131 | if (newsize <= NFS_OFFSET_MAX) | |
132 | iap->ia_size = newsize; | |
133 | else | |
134 | iap->ia_size = NFS_OFFSET_MAX; | |
135 | } | |
136 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
137 | iap->ia_valid |= ATTR_ATIME; | |
138 | } else if (tmp == 2) { /* set to client time */ | |
139 | iap->ia_valid |= ATTR_ATIME | ATTR_ATIME_SET; | |
140 | iap->ia_atime.tv_sec = ntohl(*p++); | |
141 | iap->ia_atime.tv_nsec = ntohl(*p++); | |
142 | } | |
143 | if ((tmp = ntohl(*p++)) == 1) { /* set to server time */ | |
144 | iap->ia_valid |= ATTR_MTIME; | |
145 | } else if (tmp == 2) { /* set to client time */ | |
146 | iap->ia_valid |= ATTR_MTIME | ATTR_MTIME_SET; | |
147 | iap->ia_mtime.tv_sec = ntohl(*p++); | |
148 | iap->ia_mtime.tv_nsec = ntohl(*p++); | |
149 | } | |
150 | return p; | |
151 | } | |
152 | ||
af6a4e28 N |
153 | static __be32 *encode_fsid(__be32 *p, struct svc_fh *fhp) |
154 | { | |
155 | u64 f; | |
156 | switch(fsid_source(fhp)) { | |
157 | default: | |
158 | case FSIDSOURCE_DEV: | |
159 | p = xdr_encode_hyper(p, (u64)huge_encode_dev | |
160 | (fhp->fh_dentry->d_inode->i_sb->s_dev)); | |
161 | break; | |
162 | case FSIDSOURCE_FSID: | |
163 | p = xdr_encode_hyper(p, (u64) fhp->fh_export->ex_fsid); | |
164 | break; | |
165 | case FSIDSOURCE_UUID: | |
166 | f = ((u64*)fhp->fh_export->ex_uuid)[0]; | |
167 | f ^= ((u64*)fhp->fh_export->ex_uuid)[1]; | |
168 | p = xdr_encode_hyper(p, f); | |
169 | break; | |
170 | } | |
171 | return p; | |
172 | } | |
173 | ||
3ee6f61c | 174 | static __be32 * |
91f07168 | 175 | encode_fattr3(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp, |
a334de28 | 176 | struct kstat *stat) |
1da177e4 | 177 | { |
a334de28 DS |
178 | *p++ = htonl(nfs3_ftypes[(stat->mode & S_IFMT) >> 12]); |
179 | *p++ = htonl((u32) stat->mode); | |
180 | *p++ = htonl((u32) stat->nlink); | |
181 | *p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid)); | |
182 | *p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid)); | |
183 | if (S_ISLNK(stat->mode) && stat->size > NFS3_MAXPATHLEN) { | |
1da177e4 LT |
184 | p = xdr_encode_hyper(p, (u64) NFS3_MAXPATHLEN); |
185 | } else { | |
a334de28 | 186 | p = xdr_encode_hyper(p, (u64) stat->size); |
1da177e4 | 187 | } |
a334de28 DS |
188 | p = xdr_encode_hyper(p, ((u64)stat->blocks) << 9); |
189 | *p++ = htonl((u32) MAJOR(stat->rdev)); | |
190 | *p++ = htonl((u32) MINOR(stat->rdev)); | |
af6a4e28 | 191 | p = encode_fsid(p, fhp); |
40ee5dc6 | 192 | p = xdr_encode_hyper(p, stat->ino); |
a334de28 | 193 | p = encode_time3(p, &stat->atime); |
40ee5dc6 | 194 | p = encode_time3(p, &stat->mtime); |
a334de28 | 195 | p = encode_time3(p, &stat->ctime); |
1da177e4 LT |
196 | |
197 | return p; | |
198 | } | |
199 | ||
3ee6f61c | 200 | static __be32 * |
91f07168 | 201 | encode_saved_post_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) |
1da177e4 | 202 | { |
1da177e4 LT |
203 | /* Attributes to follow */ |
204 | *p++ = xdr_one; | |
40ee5dc6 | 205 | return encode_fattr3(rqstp, p, fhp, &fhp->fh_post_attr); |
1da177e4 LT |
206 | } |
207 | ||
208 | /* | |
209 | * Encode post-operation attributes. | |
210 | * The inode may be NULL if the call failed because of a stale file | |
211 | * handle. In this case, no attributes are returned. | |
212 | */ | |
91f07168 AV |
213 | static __be32 * |
214 | encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
215 | { |
216 | struct dentry *dentry = fhp->fh_dentry; | |
072f62ed | 217 | if (dentry && dentry->d_inode) { |
a334de28 DS |
218 | int err; |
219 | struct kstat stat; | |
220 | ||
54775491 | 221 | err = vfs_getattr(fhp->fh_export->ex_path.mnt, dentry, &stat); |
a334de28 DS |
222 | if (!err) { |
223 | *p++ = xdr_one; /* attributes follow */ | |
40ee5dc6 | 224 | lease_get_mtime(dentry->d_inode, &stat.mtime); |
a334de28 DS |
225 | return encode_fattr3(rqstp, p, fhp, &stat); |
226 | } | |
1da177e4 LT |
227 | } |
228 | *p++ = xdr_zero; | |
229 | return p; | |
230 | } | |
231 | ||
a257cdd0 | 232 | /* Helper for NFSv3 ACLs */ |
91f07168 AV |
233 | __be32 * |
234 | nfs3svc_encode_post_op_attr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
a257cdd0 AG |
235 | { |
236 | return encode_post_op_attr(rqstp, p, fhp); | |
237 | } | |
238 | ||
1da177e4 LT |
239 | /* |
240 | * Enocde weak cache consistency data | |
241 | */ | |
91f07168 AV |
242 | static __be32 * |
243 | encode_wcc_data(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp) | |
1da177e4 LT |
244 | { |
245 | struct dentry *dentry = fhp->fh_dentry; | |
246 | ||
247 | if (dentry && dentry->d_inode && fhp->fh_post_saved) { | |
248 | if (fhp->fh_pre_saved) { | |
249 | *p++ = xdr_one; | |
250 | p = xdr_encode_hyper(p, (u64) fhp->fh_pre_size); | |
251 | p = encode_time3(p, &fhp->fh_pre_mtime); | |
252 | p = encode_time3(p, &fhp->fh_pre_ctime); | |
253 | } else { | |
254 | *p++ = xdr_zero; | |
255 | } | |
256 | return encode_saved_post_attr(rqstp, p, fhp); | |
257 | } | |
258 | /* no pre- or post-attrs */ | |
259 | *p++ = xdr_zero; | |
260 | return encode_post_op_attr(rqstp, p, fhp); | |
261 | } | |
262 | ||
40ee5dc6 PS |
263 | /* |
264 | * Fill in the post_op attr for the wcc data | |
265 | */ | |
266 | void fill_post_wcc(struct svc_fh *fhp) | |
267 | { | |
268 | int err; | |
269 | ||
270 | if (fhp->fh_post_saved) | |
271 | printk("nfsd: inode locked twice during operation.\n"); | |
272 | ||
54775491 | 273 | err = vfs_getattr(fhp->fh_export->ex_path.mnt, fhp->fh_dentry, |
40ee5dc6 PS |
274 | &fhp->fh_post_attr); |
275 | if (err) | |
276 | fhp->fh_post_saved = 0; | |
277 | else | |
278 | fhp->fh_post_saved = 1; | |
279 | } | |
1da177e4 LT |
280 | |
281 | /* | |
282 | * XDR decode functions | |
283 | */ | |
284 | int | |
91f07168 | 285 | nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args) |
1da177e4 LT |
286 | { |
287 | if (!(p = decode_fh(p, &args->fh))) | |
288 | return 0; | |
289 | return xdr_argsize_check(rqstp, p); | |
290 | } | |
291 | ||
292 | int | |
91f07168 | 293 | nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
294 | struct nfsd3_sattrargs *args) |
295 | { | |
072f62ed | 296 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 297 | return 0; |
072f62ed | 298 | p = decode_sattr3(p, &args->attrs); |
1da177e4 LT |
299 | |
300 | if ((args->check_guard = ntohl(*p++)) != 0) { | |
301 | struct timespec time; | |
302 | p = decode_time3(p, &time); | |
303 | args->guardtime = time.tv_sec; | |
304 | } | |
305 | ||
306 | return xdr_argsize_check(rqstp, p); | |
307 | } | |
308 | ||
309 | int | |
91f07168 | 310 | nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
311 | struct nfsd3_diropargs *args) |
312 | { | |
313 | if (!(p = decode_fh(p, &args->fh)) | |
314 | || !(p = decode_filename(p, &args->name, &args->len))) | |
315 | return 0; | |
316 | ||
317 | return xdr_argsize_check(rqstp, p); | |
318 | } | |
319 | ||
320 | int | |
91f07168 | 321 | nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
322 | struct nfsd3_accessargs *args) |
323 | { | |
324 | if (!(p = decode_fh(p, &args->fh))) | |
325 | return 0; | |
326 | args->access = ntohl(*p++); | |
327 | ||
328 | return xdr_argsize_check(rqstp, p); | |
329 | } | |
330 | ||
331 | int | |
91f07168 | 332 | nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
333 | struct nfsd3_readargs *args) |
334 | { | |
335 | unsigned int len; | |
336 | int v,pn; | |
7adae489 | 337 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 338 | |
072f62ed | 339 | if (!(p = decode_fh(p, &args->fh))) |
1da177e4 | 340 | return 0; |
072f62ed | 341 | p = xdr_decode_hyper(p, &args->offset); |
1da177e4 LT |
342 | |
343 | len = args->count = ntohl(*p++); | |
344 | ||
7adae489 GB |
345 | if (len > max_blocksize) |
346 | len = max_blocksize; | |
1da177e4 LT |
347 | |
348 | /* set up the kvec */ | |
349 | v=0; | |
350 | while (len > 0) { | |
44524359 | 351 | pn = rqstp->rq_resused++; |
3cc03b16 N |
352 | rqstp->rq_vec[v].iov_base = page_address(rqstp->rq_respages[pn]); |
353 | rqstp->rq_vec[v].iov_len = len < PAGE_SIZE? len : PAGE_SIZE; | |
354 | len -= rqstp->rq_vec[v].iov_len; | |
1da177e4 LT |
355 | v++; |
356 | } | |
357 | args->vlen = v; | |
358 | return xdr_argsize_check(rqstp, p); | |
359 | } | |
360 | ||
361 | int | |
91f07168 | 362 | nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
363 | struct nfsd3_writeargs *args) |
364 | { | |
f34b9568 | 365 | unsigned int len, v, hdr, dlen; |
7adae489 | 366 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 | 367 | |
072f62ed | 368 | if (!(p = decode_fh(p, &args->fh))) |
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; | |
44524359 N |
474 | args->tname = new = |
475 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
476 | args->tlen = len; |
477 | /* first copy and check from the first page */ | |
478 | old = (char*)p; | |
479 | vec = &rqstp->rq_arg.head[0]; | |
480 | avail = vec->iov_len - (old - (char*)vec->iov_base); | |
481 | while (len && avail && *old) { | |
482 | *new++ = *old++; | |
483 | len--; | |
484 | avail--; | |
485 | } | |
486 | /* now copy next page if there is one */ | |
487 | if (len && !avail && rqstp->rq_arg.page_len) { | |
488 | avail = rqstp->rq_arg.page_len; | |
a628f667 CL |
489 | if (avail > PAGE_SIZE) |
490 | avail = PAGE_SIZE; | |
1da177e4 LT |
491 | old = page_address(rqstp->rq_arg.pages[0]); |
492 | } | |
493 | while (len && avail && *old) { | |
494 | *new++ = *old++; | |
495 | len--; | |
496 | avail--; | |
497 | } | |
498 | *new = '\0'; | |
499 | if (len) | |
500 | return 0; | |
501 | ||
502 | return 1; | |
503 | } | |
504 | ||
505 | int | |
91f07168 | 506 | nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
507 | struct nfsd3_mknodargs *args) |
508 | { | |
509 | if (!(p = decode_fh(p, &args->fh)) | |
510 | || !(p = decode_filename(p, &args->name, &args->len))) | |
511 | return 0; | |
512 | ||
513 | args->ftype = ntohl(*p++); | |
514 | ||
515 | if (args->ftype == NF3BLK || args->ftype == NF3CHR | |
072f62ed N |
516 | || args->ftype == NF3SOCK || args->ftype == NF3FIFO) |
517 | p = decode_sattr3(p, &args->attrs); | |
1da177e4 LT |
518 | |
519 | if (args->ftype == NF3BLK || args->ftype == NF3CHR) { | |
520 | args->major = ntohl(*p++); | |
521 | args->minor = ntohl(*p++); | |
522 | } | |
523 | ||
524 | return xdr_argsize_check(rqstp, p); | |
525 | } | |
526 | ||
527 | int | |
91f07168 | 528 | nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
529 | struct nfsd3_renameargs *args) |
530 | { | |
531 | if (!(p = decode_fh(p, &args->ffh)) | |
532 | || !(p = decode_filename(p, &args->fname, &args->flen)) | |
533 | || !(p = decode_fh(p, &args->tfh)) | |
534 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
535 | return 0; | |
536 | ||
537 | return xdr_argsize_check(rqstp, p); | |
538 | } | |
539 | ||
540 | int | |
91f07168 | 541 | nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
542 | struct nfsd3_readlinkargs *args) |
543 | { | |
544 | if (!(p = decode_fh(p, &args->fh))) | |
545 | return 0; | |
44524359 N |
546 | args->buffer = |
547 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
548 | |
549 | return xdr_argsize_check(rqstp, p); | |
550 | } | |
551 | ||
552 | int | |
91f07168 | 553 | nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
554 | struct nfsd3_linkargs *args) |
555 | { | |
556 | if (!(p = decode_fh(p, &args->ffh)) | |
557 | || !(p = decode_fh(p, &args->tfh)) | |
558 | || !(p = decode_filename(p, &args->tname, &args->tlen))) | |
559 | return 0; | |
560 | ||
561 | return xdr_argsize_check(rqstp, p); | |
562 | } | |
563 | ||
564 | int | |
91f07168 | 565 | nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
566 | struct nfsd3_readdirargs *args) |
567 | { | |
568 | if (!(p = decode_fh(p, &args->fh))) | |
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 | ||
44524359 N |
578 | args->buffer = |
579 | page_address(rqstp->rq_respages[rqstp->rq_resused++]); | |
1da177e4 LT |
580 | |
581 | return xdr_argsize_check(rqstp, p); | |
582 | } | |
583 | ||
584 | int | |
91f07168 | 585 | nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
586 | struct nfsd3_readdirargs *args) |
587 | { | |
588 | int len, pn; | |
7adae489 | 589 | u32 max_blocksize = svc_max_payload(rqstp); |
1da177e4 LT |
590 | |
591 | if (!(p = decode_fh(p, &args->fh))) | |
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) { | |
44524359 | 603 | pn = rqstp->rq_resused++; |
1da177e4 LT |
604 | if (!args->buffer) |
605 | args->buffer = page_address(rqstp->rq_respages[pn]); | |
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 | { | |
616 | if (!(p = decode_fh(p, &args->fh))) | |
617 | return 0; | |
618 | p = xdr_decode_hyper(p, &args->offset); | |
619 | args->count = ntohl(*p++); | |
620 | ||
621 | return xdr_argsize_check(rqstp, p); | |
622 | } | |
623 | ||
624 | /* | |
625 | * XDR encode functions | |
626 | */ | |
627 | /* | |
628 | * There must be an encoding function for void results so svc_process | |
629 | * will work properly. | |
630 | */ | |
631 | int | |
91f07168 | 632 | nfs3svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
1da177e4 LT |
633 | { |
634 | return xdr_ressize_check(rqstp, p); | |
635 | } | |
636 | ||
637 | /* GETATTR */ | |
638 | int | |
91f07168 | 639 | nfs3svc_encode_attrstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
640 | struct nfsd3_attrstat *resp) |
641 | { | |
40ee5dc6 PS |
642 | if (resp->status == 0) { |
643 | lease_get_mtime(resp->fh.fh_dentry->d_inode, | |
644 | &resp->stat.mtime); | |
a334de28 | 645 | p = encode_fattr3(rqstp, p, &resp->fh, &resp->stat); |
40ee5dc6 | 646 | } |
1da177e4 LT |
647 | return xdr_ressize_check(rqstp, p); |
648 | } | |
649 | ||
650 | /* SETATTR, REMOVE, RMDIR */ | |
651 | int | |
91f07168 | 652 | nfs3svc_encode_wccstat(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
653 | struct nfsd3_attrstat *resp) |
654 | { | |
655 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
656 | return xdr_ressize_check(rqstp, p); | |
657 | } | |
658 | ||
659 | /* LOOKUP */ | |
660 | int | |
91f07168 | 661 | nfs3svc_encode_diropres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
662 | struct nfsd3_diropres *resp) |
663 | { | |
664 | if (resp->status == 0) { | |
665 | p = encode_fh(p, &resp->fh); | |
666 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
667 | } | |
668 | p = encode_post_op_attr(rqstp, p, &resp->dirfh); | |
669 | return xdr_ressize_check(rqstp, p); | |
670 | } | |
671 | ||
672 | /* ACCESS */ | |
673 | int | |
91f07168 | 674 | nfs3svc_encode_accessres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
675 | struct nfsd3_accessres *resp) |
676 | { | |
677 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
678 | if (resp->status == 0) | |
679 | *p++ = htonl(resp->access); | |
680 | return xdr_ressize_check(rqstp, p); | |
681 | } | |
682 | ||
683 | /* READLINK */ | |
684 | int | |
91f07168 | 685 | nfs3svc_encode_readlinkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
686 | struct nfsd3_readlinkres *resp) |
687 | { | |
688 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
689 | if (resp->status == 0) { | |
690 | *p++ = htonl(resp->len); | |
691 | xdr_ressize_check(rqstp, p); | |
692 | rqstp->rq_res.page_len = resp->len; | |
693 | if (resp->len & 3) { | |
694 | /* need to pad the tail */ | |
1da177e4 LT |
695 | rqstp->rq_res.tail[0].iov_base = p; |
696 | *p = 0; | |
697 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->len&3); | |
698 | } | |
699 | return 1; | |
700 | } else | |
701 | return xdr_ressize_check(rqstp, p); | |
702 | } | |
703 | ||
704 | /* READ */ | |
705 | int | |
91f07168 | 706 | nfs3svc_encode_readres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
707 | struct nfsd3_readres *resp) |
708 | { | |
709 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
710 | if (resp->status == 0) { | |
711 | *p++ = htonl(resp->count); | |
712 | *p++ = htonl(resp->eof); | |
713 | *p++ = htonl(resp->count); /* xdr opaque count */ | |
714 | xdr_ressize_check(rqstp, p); | |
715 | /* now update rqstp->rq_res to reflect data aswell */ | |
716 | rqstp->rq_res.page_len = resp->count; | |
717 | if (resp->count & 3) { | |
718 | /* need to pad the tail */ | |
1da177e4 LT |
719 | rqstp->rq_res.tail[0].iov_base = p; |
720 | *p = 0; | |
721 | rqstp->rq_res.tail[0].iov_len = 4 - (resp->count & 3); | |
722 | } | |
723 | return 1; | |
724 | } else | |
725 | return xdr_ressize_check(rqstp, p); | |
726 | } | |
727 | ||
728 | /* WRITE */ | |
729 | int | |
91f07168 | 730 | nfs3svc_encode_writeres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
731 | struct nfsd3_writeres *resp) |
732 | { | |
733 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
734 | if (resp->status == 0) { | |
735 | *p++ = htonl(resp->count); | |
736 | *p++ = htonl(resp->committed); | |
737 | *p++ = htonl(nfssvc_boot.tv_sec); | |
738 | *p++ = htonl(nfssvc_boot.tv_usec); | |
739 | } | |
740 | return xdr_ressize_check(rqstp, p); | |
741 | } | |
742 | ||
743 | /* CREATE, MKDIR, SYMLINK, MKNOD */ | |
744 | int | |
91f07168 | 745 | nfs3svc_encode_createres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
746 | struct nfsd3_diropres *resp) |
747 | { | |
748 | if (resp->status == 0) { | |
749 | *p++ = xdr_one; | |
750 | p = encode_fh(p, &resp->fh); | |
751 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
752 | } | |
753 | p = encode_wcc_data(rqstp, p, &resp->dirfh); | |
754 | return xdr_ressize_check(rqstp, p); | |
755 | } | |
756 | ||
757 | /* RENAME */ | |
758 | int | |
91f07168 | 759 | nfs3svc_encode_renameres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
760 | struct nfsd3_renameres *resp) |
761 | { | |
762 | p = encode_wcc_data(rqstp, p, &resp->ffh); | |
763 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
764 | return xdr_ressize_check(rqstp, p); | |
765 | } | |
766 | ||
767 | /* LINK */ | |
768 | int | |
91f07168 | 769 | nfs3svc_encode_linkres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
770 | struct nfsd3_linkres *resp) |
771 | { | |
772 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
773 | p = encode_wcc_data(rqstp, p, &resp->tfh); | |
774 | return xdr_ressize_check(rqstp, p); | |
775 | } | |
776 | ||
777 | /* READDIR */ | |
778 | int | |
91f07168 | 779 | nfs3svc_encode_readdirres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
780 | struct nfsd3_readdirres *resp) |
781 | { | |
782 | p = encode_post_op_attr(rqstp, p, &resp->fh); | |
783 | ||
784 | if (resp->status == 0) { | |
785 | /* stupid readdir cookie */ | |
786 | memcpy(p, resp->verf, 8); p += 2; | |
787 | xdr_ressize_check(rqstp, p); | |
788 | if (rqstp->rq_res.head[0].iov_len + (2<<2) > PAGE_SIZE) | |
789 | return 1; /*No room for trailer */ | |
790 | rqstp->rq_res.page_len = (resp->count) << 2; | |
791 | ||
792 | /* add the 'tail' to the end of the 'head' page - page 0. */ | |
1da177e4 LT |
793 | rqstp->rq_res.tail[0].iov_base = p; |
794 | *p++ = 0; /* no more entries */ | |
795 | *p++ = htonl(resp->common.err == nfserr_eof); | |
796 | rqstp->rq_res.tail[0].iov_len = 2<<2; | |
797 | return 1; | |
798 | } else | |
799 | return xdr_ressize_check(rqstp, p); | |
800 | } | |
801 | ||
3ee6f61c | 802 | static __be32 * |
91f07168 | 803 | encode_entry_baggage(struct nfsd3_readdirres *cd, __be32 *p, const char *name, |
40ee5dc6 | 804 | int namlen, u64 ino) |
1da177e4 LT |
805 | { |
806 | *p++ = xdr_one; /* mark entry present */ | |
807 | p = xdr_encode_hyper(p, ino); /* file id */ | |
808 | p = xdr_encode_array(p, name, namlen);/* name length & name */ | |
809 | ||
810 | cd->offset = p; /* remember pointer */ | |
811 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX);/* offset of next entry */ | |
812 | ||
813 | return p; | |
814 | } | |
815 | ||
3ee6f61c | 816 | static __be32 * |
91f07168 | 817 | encode_entryplus_baggage(struct nfsd3_readdirres *cd, __be32 *p, |
1da177e4 LT |
818 | struct svc_fh *fhp) |
819 | { | |
99d965ed BF |
820 | p = encode_post_op_attr(cd->rqstp, p, fhp); |
821 | *p++ = xdr_one; /* yes, a file handle follows */ | |
822 | p = encode_fh(p, fhp); | |
823 | fh_put(fhp); | |
824 | return p; | |
1da177e4 LT |
825 | } |
826 | ||
827 | static int | |
828 | compose_entry_fh(struct nfsd3_readdirres *cd, struct svc_fh *fhp, | |
829 | const char *name, int namlen) | |
830 | { | |
831 | struct svc_export *exp; | |
832 | struct dentry *dparent, *dchild; | |
833 | int rv = 0; | |
834 | ||
835 | dparent = cd->fh.fh_dentry; | |
836 | exp = cd->fh.fh_export; | |
837 | ||
838 | fh_init(fhp, NFS3_FHSIZE); | |
839 | if (isdotent(name, namlen)) { | |
840 | if (namlen == 2) { | |
841 | dchild = dget_parent(dparent); | |
842 | if (dchild == dparent) { | |
843 | /* filesystem root - cannot return filehandle for ".." */ | |
844 | dput(dchild); | |
845 | return 1; | |
846 | } | |
847 | } else | |
848 | dchild = dget(dparent); | |
849 | } else | |
850 | dchild = lookup_one_len(name, dparent, namlen); | |
851 | if (IS_ERR(dchild)) | |
852 | return 1; | |
853 | if (d_mountpoint(dchild) || | |
854 | fh_compose(fhp, exp, dchild, &cd->fh) != 0 || | |
855 | !dchild->d_inode) | |
856 | rv = 1; | |
857 | dput(dchild); | |
858 | return rv; | |
859 | } | |
860 | ||
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 LT |
880 | caddr_t curr_page_addr = NULL; |
881 | int pn; /* current page number */ | |
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 */ | |
918 | for (pn=1; pn < cd->rqstp->rq_resused; pn++) { | |
919 | curr_page_addr = page_address(cd->rqstp->rq_respages[pn]); | |
920 | ||
921 | if (((caddr_t)cd->buffer >= curr_page_addr) && | |
922 | ((caddr_t)cd->buffer < curr_page_addr + PAGE_SIZE)) | |
923 | break; | |
924 | } | |
925 | ||
926 | if ((caddr_t)(cd->buffer + elen) < (curr_page_addr + PAGE_SIZE)) { | |
927 | /* encode entry in current page */ | |
928 | ||
929 | p = encode_entry_baggage(cd, p, name, namlen, ino); | |
930 | ||
931 | /* throw in readdirplus baggage */ | |
932 | if (plus) { | |
933 | struct svc_fh fh; | |
934 | ||
935 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
936 | *p++ = 0; | |
937 | *p++ = 0; | |
938 | } else | |
939 | p = encode_entryplus_baggage(cd, p, &fh); | |
940 | } | |
941 | num_entry_words = p - cd->buffer; | |
942 | } else if (cd->rqstp->rq_respages[pn+1] != NULL) { | |
943 | /* temporarily encode entry into next page, then move back to | |
944 | * current and next page in rq_respages[] */ | |
91f07168 | 945 | __be32 *p1, *tmp; |
1da177e4 LT |
946 | int len1, len2; |
947 | ||
948 | /* grab next page for temporary storage of entry */ | |
949 | p1 = tmp = page_address(cd->rqstp->rq_respages[pn+1]); | |
950 | ||
951 | p1 = encode_entry_baggage(cd, p1, name, namlen, ino); | |
952 | ||
953 | /* throw in readdirplus baggage */ | |
954 | if (plus) { | |
955 | struct svc_fh fh; | |
956 | ||
957 | if (compose_entry_fh(cd, &fh, name, namlen) > 0) { | |
958 | /* zero out the filehandle */ | |
959 | *p1++ = 0; | |
960 | *p1++ = 0; | |
961 | } else | |
962 | p1 = encode_entryplus_baggage(cd, p1, &fh); | |
963 | } | |
964 | ||
965 | /* determine entry word length and lengths to go in pages */ | |
966 | num_entry_words = p1 - tmp; | |
967 | len1 = curr_page_addr + PAGE_SIZE - (caddr_t)cd->buffer; | |
968 | if ((num_entry_words << 2) < len1) { | |
969 | /* the actual number of words in the entry is less | |
970 | * than elen and can still fit in the current page | |
971 | */ | |
972 | memmove(p, tmp, num_entry_words << 2); | |
973 | p += num_entry_words; | |
974 | ||
975 | /* update offset */ | |
976 | cd->offset = cd->buffer + (cd->offset - tmp); | |
977 | } else { | |
978 | unsigned int offset_r = (cd->offset - tmp) << 2; | |
979 | ||
980 | /* update pointer to offset location. | |
981 | * This is a 64bit quantity, so we need to | |
982 | * deal with 3 cases: | |
983 | * - entirely in first page | |
984 | * - entirely in second page | |
985 | * - 4 bytes in each page | |
986 | */ | |
987 | if (offset_r + 8 <= len1) { | |
988 | cd->offset = p + (cd->offset - tmp); | |
989 | } else if (offset_r >= len1) { | |
990 | cd->offset -= len1 >> 2; | |
991 | } else { | |
992 | /* sitting on the fence */ | |
993 | BUG_ON(offset_r != len1 - 4); | |
994 | cd->offset = p + (cd->offset - tmp); | |
995 | cd->offset1 = tmp; | |
996 | } | |
997 | ||
998 | len2 = (num_entry_words << 2) - len1; | |
999 | ||
1000 | /* move from temp page to current and next pages */ | |
1001 | memmove(p, tmp, len1); | |
1002 | memmove(tmp, (caddr_t)tmp+len1, len2); | |
1003 | ||
1004 | p = tmp + (len2 >> 2); | |
1005 | } | |
1006 | } | |
1007 | else { | |
1008 | cd->common.err = nfserr_toosmall; | |
1009 | return -EINVAL; | |
1010 | } | |
1011 | ||
1012 | cd->buflen -= num_entry_words; | |
1013 | cd->buffer = p; | |
1014 | cd->common.err = nfs_ok; | |
1015 | return 0; | |
1016 | ||
1017 | } | |
1018 | ||
1019 | int | |
a0ad13ef N |
1020 | nfs3svc_encode_entry(void *cd, const char *name, |
1021 | int namlen, loff_t offset, u64 ino, unsigned int d_type) | |
1da177e4 LT |
1022 | { |
1023 | return encode_entry(cd, name, namlen, offset, ino, d_type, 0); | |
1024 | } | |
1025 | ||
1026 | int | |
a0ad13ef N |
1027 | nfs3svc_encode_entry_plus(void *cd, const char *name, |
1028 | int namlen, loff_t offset, u64 ino, | |
1029 | unsigned int d_type) | |
1da177e4 LT |
1030 | { |
1031 | return encode_entry(cd, name, namlen, offset, ino, d_type, 1); | |
1032 | } | |
1033 | ||
1034 | /* FSSTAT */ | |
1035 | int | |
91f07168 | 1036 | nfs3svc_encode_fsstatres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1037 | struct nfsd3_fsstatres *resp) |
1038 | { | |
1039 | struct kstatfs *s = &resp->stats; | |
1040 | u64 bs = s->f_bsize; | |
1041 | ||
1042 | *p++ = xdr_zero; /* no post_op_attr */ | |
1043 | ||
1044 | if (resp->status == 0) { | |
1045 | p = xdr_encode_hyper(p, bs * s->f_blocks); /* total bytes */ | |
1046 | p = xdr_encode_hyper(p, bs * s->f_bfree); /* free bytes */ | |
1047 | p = xdr_encode_hyper(p, bs * s->f_bavail); /* user available bytes */ | |
1048 | p = xdr_encode_hyper(p, s->f_files); /* total inodes */ | |
1049 | p = xdr_encode_hyper(p, s->f_ffree); /* free inodes */ | |
1050 | p = xdr_encode_hyper(p, s->f_ffree); /* user available inodes */ | |
1051 | *p++ = htonl(resp->invarsec); /* mean unchanged time */ | |
1052 | } | |
1053 | return xdr_ressize_check(rqstp, p); | |
1054 | } | |
1055 | ||
1056 | /* FSINFO */ | |
1057 | int | |
91f07168 | 1058 | nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1059 | struct nfsd3_fsinfores *resp) |
1060 | { | |
1061 | *p++ = xdr_zero; /* no post_op_attr */ | |
1062 | ||
1063 | if (resp->status == 0) { | |
1064 | *p++ = htonl(resp->f_rtmax); | |
1065 | *p++ = htonl(resp->f_rtpref); | |
1066 | *p++ = htonl(resp->f_rtmult); | |
1067 | *p++ = htonl(resp->f_wtmax); | |
1068 | *p++ = htonl(resp->f_wtpref); | |
1069 | *p++ = htonl(resp->f_wtmult); | |
1070 | *p++ = htonl(resp->f_dtpref); | |
1071 | p = xdr_encode_hyper(p, resp->f_maxfilesize); | |
1072 | *p++ = xdr_one; | |
1073 | *p++ = xdr_zero; | |
1074 | *p++ = htonl(resp->f_properties); | |
1075 | } | |
1076 | ||
1077 | return xdr_ressize_check(rqstp, p); | |
1078 | } | |
1079 | ||
1080 | /* PATHCONF */ | |
1081 | int | |
91f07168 | 1082 | nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1083 | struct nfsd3_pathconfres *resp) |
1084 | { | |
1085 | *p++ = xdr_zero; /* no post_op_attr */ | |
1086 | ||
1087 | if (resp->status == 0) { | |
1088 | *p++ = htonl(resp->p_link_max); | |
1089 | *p++ = htonl(resp->p_name_max); | |
1090 | *p++ = htonl(resp->p_no_trunc); | |
1091 | *p++ = htonl(resp->p_chown_restricted); | |
1092 | *p++ = htonl(resp->p_case_insensitive); | |
1093 | *p++ = htonl(resp->p_case_preserving); | |
1094 | } | |
1095 | ||
1096 | return xdr_ressize_check(rqstp, p); | |
1097 | } | |
1098 | ||
1099 | /* COMMIT */ | |
1100 | int | |
91f07168 | 1101 | nfs3svc_encode_commitres(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1102 | struct nfsd3_commitres *resp) |
1103 | { | |
1104 | p = encode_wcc_data(rqstp, p, &resp->fh); | |
1105 | /* Write verifier */ | |
1106 | if (resp->status == 0) { | |
1107 | *p++ = htonl(nfssvc_boot.tv_sec); | |
1108 | *p++ = htonl(nfssvc_boot.tv_usec); | |
1109 | } | |
1110 | return xdr_ressize_check(rqstp, p); | |
1111 | } | |
1112 | ||
1113 | /* | |
1114 | * XDR release functions | |
1115 | */ | |
1116 | int | |
91f07168 | 1117 | nfs3svc_release_fhandle(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1118 | struct nfsd3_attrstat *resp) |
1119 | { | |
1120 | fh_put(&resp->fh); | |
1121 | return 1; | |
1122 | } | |
1123 | ||
1124 | int | |
91f07168 | 1125 | nfs3svc_release_fhandle2(struct svc_rqst *rqstp, __be32 *p, |
1da177e4 LT |
1126 | struct nfsd3_fhandle_pair *resp) |
1127 | { | |
1128 | fh_put(&resp->fh1); | |
1129 | fh_put(&resp->fh2); | |
1130 | return 1; | |
1131 | } |