diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/nfs/proc.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/nfs/proc.c')
-rw-r--r-- | fs/nfs/proc.c | 655 |
1 files changed, 655 insertions, 0 deletions
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c new file mode 100644 index 000000000000..d31b4d6e5a5e --- /dev/null +++ b/fs/nfs/proc.c | |||
@@ -0,0 +1,655 @@ | |||
1 | /* | ||
2 | * linux/fs/nfs/proc.c | ||
3 | * | ||
4 | * Copyright (C) 1992, 1993, 1994 Rick Sladkey | ||
5 | * | ||
6 | * OS-independent nfs remote procedure call functions | ||
7 | * | ||
8 | * Tuned by Alan Cox <A.Cox@swansea.ac.uk> for >3K buffers | ||
9 | * so at last we can have decent(ish) throughput off a | ||
10 | * Sun server. | ||
11 | * | ||
12 | * Coding optimized and cleaned up by Florian La Roche. | ||
13 | * Note: Error returns are optimized for NFS_OK, which isn't translated via | ||
14 | * nfs_stat_to_errno(), but happens to be already the right return code. | ||
15 | * | ||
16 | * Also, the code currently doesn't check the size of the packet, when | ||
17 | * it decodes the packet. | ||
18 | * | ||
19 | * Feel free to fix it and mail me the diffs if it worries you. | ||
20 | * | ||
21 | * Completely rewritten to support the new RPC call interface; | ||
22 | * rewrote and moved the entire XDR stuff to xdr.c | ||
23 | * --Olaf Kirch June 1996 | ||
24 | * | ||
25 | * The code below initializes all auto variables explicitly, otherwise | ||
26 | * it will fail to work as a module (gcc generates a memset call for an | ||
27 | * incomplete struct). | ||
28 | */ | ||
29 | |||
30 | #include <linux/types.h> | ||
31 | #include <linux/param.h> | ||
32 | #include <linux/slab.h> | ||
33 | #include <linux/time.h> | ||
34 | #include <linux/mm.h> | ||
35 | #include <linux/utsname.h> | ||
36 | #include <linux/errno.h> | ||
37 | #include <linux/string.h> | ||
38 | #include <linux/in.h> | ||
39 | #include <linux/pagemap.h> | ||
40 | #include <linux/sunrpc/clnt.h> | ||
41 | #include <linux/nfs.h> | ||
42 | #include <linux/nfs2.h> | ||
43 | #include <linux/nfs_fs.h> | ||
44 | #include <linux/nfs_page.h> | ||
45 | #include <linux/lockd/bind.h> | ||
46 | #include <linux/smp_lock.h> | ||
47 | |||
48 | #define NFSDBG_FACILITY NFSDBG_PROC | ||
49 | |||
50 | extern struct rpc_procinfo nfs_procedures[]; | ||
51 | |||
52 | /* | ||
53 | * Bare-bones access to getattr: this is for nfs_read_super. | ||
54 | */ | ||
55 | static int | ||
56 | nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | ||
57 | struct nfs_fsinfo *info) | ||
58 | { | ||
59 | struct nfs_fattr *fattr = info->fattr; | ||
60 | struct nfs2_fsstat fsinfo; | ||
61 | int status; | ||
62 | |||
63 | dprintk("%s: call getattr\n", __FUNCTION__); | ||
64 | fattr->valid = 0; | ||
65 | status = rpc_call(server->client_sys, NFSPROC_GETATTR, fhandle, fattr, 0); | ||
66 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); | ||
67 | if (status) | ||
68 | return status; | ||
69 | dprintk("%s: call statfs\n", __FUNCTION__); | ||
70 | status = rpc_call(server->client_sys, NFSPROC_STATFS, fhandle, &fsinfo, 0); | ||
71 | dprintk("%s: reply statfs: %d\n", __FUNCTION__, status); | ||
72 | if (status) | ||
73 | return status; | ||
74 | info->rtmax = NFS_MAXDATA; | ||
75 | info->rtpref = fsinfo.tsize; | ||
76 | info->rtmult = fsinfo.bsize; | ||
77 | info->wtmax = NFS_MAXDATA; | ||
78 | info->wtpref = fsinfo.tsize; | ||
79 | info->wtmult = fsinfo.bsize; | ||
80 | info->dtpref = fsinfo.tsize; | ||
81 | info->maxfilesize = 0x7FFFFFFF; | ||
82 | info->lease_time = 0; | ||
83 | return 0; | ||
84 | } | ||
85 | |||
86 | /* | ||
87 | * One function for each procedure in the NFS protocol. | ||
88 | */ | ||
89 | static int | ||
90 | nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | ||
91 | struct nfs_fattr *fattr) | ||
92 | { | ||
93 | int status; | ||
94 | |||
95 | dprintk("NFS call getattr\n"); | ||
96 | fattr->valid = 0; | ||
97 | status = rpc_call(server->client, NFSPROC_GETATTR, | ||
98 | fhandle, fattr, 0); | ||
99 | dprintk("NFS reply getattr: %d\n", status); | ||
100 | return status; | ||
101 | } | ||
102 | |||
103 | static int | ||
104 | nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | ||
105 | struct iattr *sattr) | ||
106 | { | ||
107 | struct inode *inode = dentry->d_inode; | ||
108 | struct nfs_sattrargs arg = { | ||
109 | .fh = NFS_FH(inode), | ||
110 | .sattr = sattr | ||
111 | }; | ||
112 | int status; | ||
113 | |||
114 | dprintk("NFS call setattr\n"); | ||
115 | fattr->valid = 0; | ||
116 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0); | ||
117 | dprintk("NFS reply setattr: %d\n", status); | ||
118 | return status; | ||
119 | } | ||
120 | |||
121 | static int | ||
122 | nfs_proc_lookup(struct inode *dir, struct qstr *name, | ||
123 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | ||
124 | { | ||
125 | struct nfs_diropargs arg = { | ||
126 | .fh = NFS_FH(dir), | ||
127 | .name = name->name, | ||
128 | .len = name->len | ||
129 | }; | ||
130 | struct nfs_diropok res = { | ||
131 | .fh = fhandle, | ||
132 | .fattr = fattr | ||
133 | }; | ||
134 | int status; | ||
135 | |||
136 | dprintk("NFS call lookup %s\n", name->name); | ||
137 | fattr->valid = 0; | ||
138 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0); | ||
139 | dprintk("NFS reply lookup: %d\n", status); | ||
140 | return status; | ||
141 | } | ||
142 | |||
143 | static int nfs_proc_readlink(struct inode *inode, struct page *page, | ||
144 | unsigned int pgbase, unsigned int pglen) | ||
145 | { | ||
146 | struct nfs_readlinkargs args = { | ||
147 | .fh = NFS_FH(inode), | ||
148 | .pgbase = pgbase, | ||
149 | .pglen = pglen, | ||
150 | .pages = &page | ||
151 | }; | ||
152 | int status; | ||
153 | |||
154 | dprintk("NFS call readlink\n"); | ||
155 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0); | ||
156 | dprintk("NFS reply readlink: %d\n", status); | ||
157 | return status; | ||
158 | } | ||
159 | |||
160 | static int nfs_proc_read(struct nfs_read_data *rdata) | ||
161 | { | ||
162 | int flags = rdata->flags; | ||
163 | struct inode * inode = rdata->inode; | ||
164 | struct nfs_fattr * fattr = rdata->res.fattr; | ||
165 | struct rpc_message msg = { | ||
166 | .rpc_proc = &nfs_procedures[NFSPROC_READ], | ||
167 | .rpc_argp = &rdata->args, | ||
168 | .rpc_resp = &rdata->res, | ||
169 | .rpc_cred = rdata->cred, | ||
170 | }; | ||
171 | int status; | ||
172 | |||
173 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | ||
174 | (long long) rdata->args.offset); | ||
175 | fattr->valid = 0; | ||
176 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | ||
177 | if (status >= 0) { | ||
178 | nfs_refresh_inode(inode, fattr); | ||
179 | /* Emulate the eof flag, which isn't normally needed in NFSv2 | ||
180 | * as it is guaranteed to always return the file attributes | ||
181 | */ | ||
182 | if (rdata->args.offset + rdata->args.count >= fattr->size) | ||
183 | rdata->res.eof = 1; | ||
184 | } | ||
185 | dprintk("NFS reply read: %d\n", status); | ||
186 | return status; | ||
187 | } | ||
188 | |||
189 | static int nfs_proc_write(struct nfs_write_data *wdata) | ||
190 | { | ||
191 | int flags = wdata->flags; | ||
192 | struct inode * inode = wdata->inode; | ||
193 | struct nfs_fattr * fattr = wdata->res.fattr; | ||
194 | struct rpc_message msg = { | ||
195 | .rpc_proc = &nfs_procedures[NFSPROC_WRITE], | ||
196 | .rpc_argp = &wdata->args, | ||
197 | .rpc_resp = &wdata->res, | ||
198 | .rpc_cred = wdata->cred, | ||
199 | }; | ||
200 | int status; | ||
201 | |||
202 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | ||
203 | (long long) wdata->args.offset); | ||
204 | fattr->valid = 0; | ||
205 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | ||
206 | if (status >= 0) { | ||
207 | nfs_refresh_inode(inode, fattr); | ||
208 | wdata->res.count = wdata->args.count; | ||
209 | wdata->verf.committed = NFS_FILE_SYNC; | ||
210 | } | ||
211 | dprintk("NFS reply write: %d\n", status); | ||
212 | return status < 0? status : wdata->res.count; | ||
213 | } | ||
214 | |||
215 | static int | ||
216 | nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | ||
217 | int flags) | ||
218 | { | ||
219 | struct nfs_fh fhandle; | ||
220 | struct nfs_fattr fattr; | ||
221 | struct nfs_createargs arg = { | ||
222 | .fh = NFS_FH(dir), | ||
223 | .name = dentry->d_name.name, | ||
224 | .len = dentry->d_name.len, | ||
225 | .sattr = sattr | ||
226 | }; | ||
227 | struct nfs_diropok res = { | ||
228 | .fh = &fhandle, | ||
229 | .fattr = &fattr | ||
230 | }; | ||
231 | int status; | ||
232 | |||
233 | fattr.valid = 0; | ||
234 | dprintk("NFS call create %s\n", dentry->d_name.name); | ||
235 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | ||
236 | if (status == 0) | ||
237 | status = nfs_instantiate(dentry, &fhandle, &fattr); | ||
238 | dprintk("NFS reply create: %d\n", status); | ||
239 | return status; | ||
240 | } | ||
241 | |||
242 | /* | ||
243 | * In NFSv2, mknod is grafted onto the create call. | ||
244 | */ | ||
245 | static int | ||
246 | nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | ||
247 | dev_t rdev) | ||
248 | { | ||
249 | struct nfs_fh fhandle; | ||
250 | struct nfs_fattr fattr; | ||
251 | struct nfs_createargs arg = { | ||
252 | .fh = NFS_FH(dir), | ||
253 | .name = dentry->d_name.name, | ||
254 | .len = dentry->d_name.len, | ||
255 | .sattr = sattr | ||
256 | }; | ||
257 | struct nfs_diropok res = { | ||
258 | .fh = &fhandle, | ||
259 | .fattr = &fattr | ||
260 | }; | ||
261 | int status, mode; | ||
262 | |||
263 | dprintk("NFS call mknod %s\n", dentry->d_name.name); | ||
264 | |||
265 | mode = sattr->ia_mode; | ||
266 | if (S_ISFIFO(mode)) { | ||
267 | sattr->ia_mode = (mode & ~S_IFMT) | S_IFCHR; | ||
268 | sattr->ia_valid &= ~ATTR_SIZE; | ||
269 | } else if (S_ISCHR(mode) || S_ISBLK(mode)) { | ||
270 | sattr->ia_valid |= ATTR_SIZE; | ||
271 | sattr->ia_size = new_encode_dev(rdev);/* get out your barf bag */ | ||
272 | } | ||
273 | |||
274 | fattr.valid = 0; | ||
275 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | ||
276 | |||
277 | if (status == -EINVAL && S_ISFIFO(mode)) { | ||
278 | sattr->ia_mode = mode; | ||
279 | fattr.valid = 0; | ||
280 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0); | ||
281 | } | ||
282 | if (status == 0) | ||
283 | status = nfs_instantiate(dentry, &fhandle, &fattr); | ||
284 | dprintk("NFS reply mknod: %d\n", status); | ||
285 | return status; | ||
286 | } | ||
287 | |||
288 | static int | ||
289 | nfs_proc_remove(struct inode *dir, struct qstr *name) | ||
290 | { | ||
291 | struct nfs_diropargs arg = { | ||
292 | .fh = NFS_FH(dir), | ||
293 | .name = name->name, | ||
294 | .len = name->len | ||
295 | }; | ||
296 | struct rpc_message msg = { | ||
297 | .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], | ||
298 | .rpc_argp = &arg, | ||
299 | .rpc_resp = NULL, | ||
300 | .rpc_cred = NULL | ||
301 | }; | ||
302 | int status; | ||
303 | |||
304 | dprintk("NFS call remove %s\n", name->name); | ||
305 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | ||
306 | |||
307 | dprintk("NFS reply remove: %d\n", status); | ||
308 | return status; | ||
309 | } | ||
310 | |||
311 | static int | ||
312 | nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | ||
313 | { | ||
314 | struct nfs_diropargs *arg; | ||
315 | |||
316 | arg = (struct nfs_diropargs *)kmalloc(sizeof(*arg), GFP_KERNEL); | ||
317 | if (!arg) | ||
318 | return -ENOMEM; | ||
319 | arg->fh = NFS_FH(dir->d_inode); | ||
320 | arg->name = name->name; | ||
321 | arg->len = name->len; | ||
322 | msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; | ||
323 | msg->rpc_argp = arg; | ||
324 | return 0; | ||
325 | } | ||
326 | |||
327 | static int | ||
328 | nfs_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | ||
329 | { | ||
330 | struct rpc_message *msg = &task->tk_msg; | ||
331 | |||
332 | if (msg->rpc_argp) | ||
333 | kfree(msg->rpc_argp); | ||
334 | return 0; | ||
335 | } | ||
336 | |||
337 | static int | ||
338 | nfs_proc_rename(struct inode *old_dir, struct qstr *old_name, | ||
339 | struct inode *new_dir, struct qstr *new_name) | ||
340 | { | ||
341 | struct nfs_renameargs arg = { | ||
342 | .fromfh = NFS_FH(old_dir), | ||
343 | .fromname = old_name->name, | ||
344 | .fromlen = old_name->len, | ||
345 | .tofh = NFS_FH(new_dir), | ||
346 | .toname = new_name->name, | ||
347 | .tolen = new_name->len | ||
348 | }; | ||
349 | int status; | ||
350 | |||
351 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | ||
352 | status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0); | ||
353 | dprintk("NFS reply rename: %d\n", status); | ||
354 | return status; | ||
355 | } | ||
356 | |||
357 | static int | ||
358 | nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | ||
359 | { | ||
360 | struct nfs_linkargs arg = { | ||
361 | .fromfh = NFS_FH(inode), | ||
362 | .tofh = NFS_FH(dir), | ||
363 | .toname = name->name, | ||
364 | .tolen = name->len | ||
365 | }; | ||
366 | int status; | ||
367 | |||
368 | dprintk("NFS call link %s\n", name->name); | ||
369 | status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0); | ||
370 | dprintk("NFS reply link: %d\n", status); | ||
371 | return status; | ||
372 | } | ||
373 | |||
374 | static int | ||
375 | nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | ||
376 | struct iattr *sattr, struct nfs_fh *fhandle, | ||
377 | struct nfs_fattr *fattr) | ||
378 | { | ||
379 | struct nfs_symlinkargs arg = { | ||
380 | .fromfh = NFS_FH(dir), | ||
381 | .fromname = name->name, | ||
382 | .fromlen = name->len, | ||
383 | .topath = path->name, | ||
384 | .tolen = path->len, | ||
385 | .sattr = sattr | ||
386 | }; | ||
387 | int status; | ||
388 | |||
389 | if (path->len > NFS2_MAXPATHLEN) | ||
390 | return -ENAMETOOLONG; | ||
391 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | ||
392 | fattr->valid = 0; | ||
393 | fhandle->size = 0; | ||
394 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0); | ||
395 | dprintk("NFS reply symlink: %d\n", status); | ||
396 | return status; | ||
397 | } | ||
398 | |||
399 | static int | ||
400 | nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | ||
401 | { | ||
402 | struct nfs_fh fhandle; | ||
403 | struct nfs_fattr fattr; | ||
404 | struct nfs_createargs arg = { | ||
405 | .fh = NFS_FH(dir), | ||
406 | .name = dentry->d_name.name, | ||
407 | .len = dentry->d_name.len, | ||
408 | .sattr = sattr | ||
409 | }; | ||
410 | struct nfs_diropok res = { | ||
411 | .fh = &fhandle, | ||
412 | .fattr = &fattr | ||
413 | }; | ||
414 | int status; | ||
415 | |||
416 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | ||
417 | fattr.valid = 0; | ||
418 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0); | ||
419 | if (status == 0) | ||
420 | status = nfs_instantiate(dentry, &fhandle, &fattr); | ||
421 | dprintk("NFS reply mkdir: %d\n", status); | ||
422 | return status; | ||
423 | } | ||
424 | |||
425 | static int | ||
426 | nfs_proc_rmdir(struct inode *dir, struct qstr *name) | ||
427 | { | ||
428 | struct nfs_diropargs arg = { | ||
429 | .fh = NFS_FH(dir), | ||
430 | .name = name->name, | ||
431 | .len = name->len | ||
432 | }; | ||
433 | int status; | ||
434 | |||
435 | dprintk("NFS call rmdir %s\n", name->name); | ||
436 | status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0); | ||
437 | dprintk("NFS reply rmdir: %d\n", status); | ||
438 | return status; | ||
439 | } | ||
440 | |||
441 | /* | ||
442 | * The READDIR implementation is somewhat hackish - we pass a temporary | ||
443 | * buffer to the encode function, which installs it in the receive | ||
444 | * the receive iovec. The decode function just parses the reply to make | ||
445 | * sure it is syntactically correct; the entries itself are decoded | ||
446 | * from nfs_readdir by calling the decode_entry function directly. | ||
447 | */ | ||
448 | static int | ||
449 | nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | ||
450 | u64 cookie, struct page *page, unsigned int count, int plus) | ||
451 | { | ||
452 | struct inode *dir = dentry->d_inode; | ||
453 | struct nfs_readdirargs arg = { | ||
454 | .fh = NFS_FH(dir), | ||
455 | .cookie = cookie, | ||
456 | .count = count, | ||
457 | .pages = &page | ||
458 | }; | ||
459 | struct rpc_message msg = { | ||
460 | .rpc_proc = &nfs_procedures[NFSPROC_READDIR], | ||
461 | .rpc_argp = &arg, | ||
462 | .rpc_resp = NULL, | ||
463 | .rpc_cred = cred | ||
464 | }; | ||
465 | int status; | ||
466 | |||
467 | lock_kernel(); | ||
468 | |||
469 | dprintk("NFS call readdir %d\n", (unsigned int)cookie); | ||
470 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | ||
471 | |||
472 | dprintk("NFS reply readdir: %d\n", status); | ||
473 | unlock_kernel(); | ||
474 | return status; | ||
475 | } | ||
476 | |||
477 | static int | ||
478 | nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | ||
479 | struct nfs_fsstat *stat) | ||
480 | { | ||
481 | struct nfs2_fsstat fsinfo; | ||
482 | int status; | ||
483 | |||
484 | dprintk("NFS call statfs\n"); | ||
485 | stat->fattr->valid = 0; | ||
486 | status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0); | ||
487 | dprintk("NFS reply statfs: %d\n", status); | ||
488 | if (status) | ||
489 | goto out; | ||
490 | stat->tbytes = (u64)fsinfo.blocks * fsinfo.bsize; | ||
491 | stat->fbytes = (u64)fsinfo.bfree * fsinfo.bsize; | ||
492 | stat->abytes = (u64)fsinfo.bavail * fsinfo.bsize; | ||
493 | stat->tfiles = 0; | ||
494 | stat->ffiles = 0; | ||
495 | stat->afiles = 0; | ||
496 | out: | ||
497 | return status; | ||
498 | } | ||
499 | |||
500 | static int | ||
501 | nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | ||
502 | struct nfs_fsinfo *info) | ||
503 | { | ||
504 | struct nfs2_fsstat fsinfo; | ||
505 | int status; | ||
506 | |||
507 | dprintk("NFS call fsinfo\n"); | ||
508 | info->fattr->valid = 0; | ||
509 | status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0); | ||
510 | dprintk("NFS reply fsinfo: %d\n", status); | ||
511 | if (status) | ||
512 | goto out; | ||
513 | info->rtmax = NFS_MAXDATA; | ||
514 | info->rtpref = fsinfo.tsize; | ||
515 | info->rtmult = fsinfo.bsize; | ||
516 | info->wtmax = NFS_MAXDATA; | ||
517 | info->wtpref = fsinfo.tsize; | ||
518 | info->wtmult = fsinfo.bsize; | ||
519 | info->dtpref = fsinfo.tsize; | ||
520 | info->maxfilesize = 0x7FFFFFFF; | ||
521 | info->lease_time = 0; | ||
522 | out: | ||
523 | return status; | ||
524 | } | ||
525 | |||
526 | static int | ||
527 | nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | ||
528 | struct nfs_pathconf *info) | ||
529 | { | ||
530 | info->max_link = 0; | ||
531 | info->max_namelen = NFS2_MAXNAMLEN; | ||
532 | return 0; | ||
533 | } | ||
534 | |||
535 | extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int); | ||
536 | |||
537 | static void | ||
538 | nfs_read_done(struct rpc_task *task) | ||
539 | { | ||
540 | struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata; | ||
541 | |||
542 | if (task->tk_status >= 0) { | ||
543 | nfs_refresh_inode(data->inode, data->res.fattr); | ||
544 | /* Emulate the eof flag, which isn't normally needed in NFSv2 | ||
545 | * as it is guaranteed to always return the file attributes | ||
546 | */ | ||
547 | if (data->args.offset + data->args.count >= data->res.fattr->size) | ||
548 | data->res.eof = 1; | ||
549 | } | ||
550 | nfs_readpage_result(task); | ||
551 | } | ||
552 | |||
553 | static void | ||
554 | nfs_proc_read_setup(struct nfs_read_data *data) | ||
555 | { | ||
556 | struct rpc_task *task = &data->task; | ||
557 | struct inode *inode = data->inode; | ||
558 | int flags; | ||
559 | struct rpc_message msg = { | ||
560 | .rpc_proc = &nfs_procedures[NFSPROC_READ], | ||
561 | .rpc_argp = &data->args, | ||
562 | .rpc_resp = &data->res, | ||
563 | .rpc_cred = data->cred, | ||
564 | }; | ||
565 | |||
566 | /* N.B. Do we need to test? Never called for swapfile inode */ | ||
567 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | ||
568 | |||
569 | /* Finalize the task. */ | ||
570 | rpc_init_task(task, NFS_CLIENT(inode), nfs_read_done, flags); | ||
571 | rpc_call_setup(task, &msg, 0); | ||
572 | } | ||
573 | |||
574 | static void | ||
575 | nfs_write_done(struct rpc_task *task) | ||
576 | { | ||
577 | struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; | ||
578 | |||
579 | if (task->tk_status >= 0) | ||
580 | nfs_refresh_inode(data->inode, data->res.fattr); | ||
581 | nfs_writeback_done(task); | ||
582 | } | ||
583 | |||
584 | static void | ||
585 | nfs_proc_write_setup(struct nfs_write_data *data, int how) | ||
586 | { | ||
587 | struct rpc_task *task = &data->task; | ||
588 | struct inode *inode = data->inode; | ||
589 | int flags; | ||
590 | struct rpc_message msg = { | ||
591 | .rpc_proc = &nfs_procedures[NFSPROC_WRITE], | ||
592 | .rpc_argp = &data->args, | ||
593 | .rpc_resp = &data->res, | ||
594 | .rpc_cred = data->cred, | ||
595 | }; | ||
596 | |||
597 | /* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */ | ||
598 | data->args.stable = NFS_FILE_SYNC; | ||
599 | |||
600 | /* Set the initial flags for the task. */ | ||
601 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | ||
602 | |||
603 | /* Finalize the task. */ | ||
604 | rpc_init_task(task, NFS_CLIENT(inode), nfs_write_done, flags); | ||
605 | rpc_call_setup(task, &msg, 0); | ||
606 | } | ||
607 | |||
608 | static void | ||
609 | nfs_proc_commit_setup(struct nfs_write_data *data, int how) | ||
610 | { | ||
611 | BUG(); | ||
612 | } | ||
613 | |||
614 | static int | ||
615 | nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | ||
616 | { | ||
617 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | ||
618 | } | ||
619 | |||
620 | |||
621 | struct nfs_rpc_ops nfs_v2_clientops = { | ||
622 | .version = 2, /* protocol version */ | ||
623 | .dentry_ops = &nfs_dentry_operations, | ||
624 | .dir_inode_ops = &nfs_dir_inode_operations, | ||
625 | .getroot = nfs_proc_get_root, | ||
626 | .getattr = nfs_proc_getattr, | ||
627 | .setattr = nfs_proc_setattr, | ||
628 | .lookup = nfs_proc_lookup, | ||
629 | .access = NULL, /* access */ | ||
630 | .readlink = nfs_proc_readlink, | ||
631 | .read = nfs_proc_read, | ||
632 | .write = nfs_proc_write, | ||
633 | .commit = NULL, /* commit */ | ||
634 | .create = nfs_proc_create, | ||
635 | .remove = nfs_proc_remove, | ||
636 | .unlink_setup = nfs_proc_unlink_setup, | ||
637 | .unlink_done = nfs_proc_unlink_done, | ||
638 | .rename = nfs_proc_rename, | ||
639 | .link = nfs_proc_link, | ||
640 | .symlink = nfs_proc_symlink, | ||
641 | .mkdir = nfs_proc_mkdir, | ||
642 | .rmdir = nfs_proc_rmdir, | ||
643 | .readdir = nfs_proc_readdir, | ||
644 | .mknod = nfs_proc_mknod, | ||
645 | .statfs = nfs_proc_statfs, | ||
646 | .fsinfo = nfs_proc_fsinfo, | ||
647 | .pathconf = nfs_proc_pathconf, | ||
648 | .decode_dirent = nfs_decode_dirent, | ||
649 | .read_setup = nfs_proc_read_setup, | ||
650 | .write_setup = nfs_proc_write_setup, | ||
651 | .commit_setup = nfs_proc_commit_setup, | ||
652 | .file_open = nfs_open, | ||
653 | .file_release = nfs_release, | ||
654 | .lock = nfs_proc_lock, | ||
655 | }; | ||