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/nfs3proc.c |
Linux-2.6.12-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/nfs3proc.c')
-rw-r--r-- | fs/nfs/nfs3proc.c | 859 |
1 files changed, 859 insertions, 0 deletions
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c new file mode 100644 index 000000000000..3878494dfc2c --- /dev/null +++ b/fs/nfs/nfs3proc.c | |||
@@ -0,0 +1,859 @@ | |||
1 | /* | ||
2 | * linux/fs/nfs/nfs3proc.c | ||
3 | * | ||
4 | * Client-side NFSv3 procedures stubs. | ||
5 | * | ||
6 | * Copyright (C) 1997, Olaf Kirch | ||
7 | */ | ||
8 | |||
9 | #include <linux/mm.h> | ||
10 | #include <linux/utsname.h> | ||
11 | #include <linux/errno.h> | ||
12 | #include <linux/string.h> | ||
13 | #include <linux/sunrpc/clnt.h> | ||
14 | #include <linux/nfs.h> | ||
15 | #include <linux/nfs3.h> | ||
16 | #include <linux/nfs_fs.h> | ||
17 | #include <linux/nfs_page.h> | ||
18 | #include <linux/lockd/bind.h> | ||
19 | #include <linux/smp_lock.h> | ||
20 | |||
21 | #define NFSDBG_FACILITY NFSDBG_PROC | ||
22 | |||
23 | extern struct rpc_procinfo nfs3_procedures[]; | ||
24 | |||
25 | /* A wrapper to handle the EJUKEBOX error message */ | ||
26 | static int | ||
27 | nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) | ||
28 | { | ||
29 | sigset_t oldset; | ||
30 | int res; | ||
31 | rpc_clnt_sigmask(clnt, &oldset); | ||
32 | do { | ||
33 | res = rpc_call_sync(clnt, msg, flags); | ||
34 | if (res != -EJUKEBOX) | ||
35 | break; | ||
36 | set_current_state(TASK_INTERRUPTIBLE); | ||
37 | schedule_timeout(NFS_JUKEBOX_RETRY_TIME); | ||
38 | res = -ERESTARTSYS; | ||
39 | } while (!signalled()); | ||
40 | rpc_clnt_sigunmask(clnt, &oldset); | ||
41 | return res; | ||
42 | } | ||
43 | |||
44 | static inline int | ||
45 | nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags) | ||
46 | { | ||
47 | struct rpc_message msg = { | ||
48 | .rpc_proc = &nfs3_procedures[proc], | ||
49 | .rpc_argp = argp, | ||
50 | .rpc_resp = resp, | ||
51 | }; | ||
52 | return nfs3_rpc_wrapper(clnt, &msg, flags); | ||
53 | } | ||
54 | |||
55 | #define rpc_call(clnt, proc, argp, resp, flags) \ | ||
56 | nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags) | ||
57 | #define rpc_call_sync(clnt, msg, flags) \ | ||
58 | nfs3_rpc_wrapper(clnt, msg, flags) | ||
59 | |||
60 | static int | ||
61 | nfs3_async_handle_jukebox(struct rpc_task *task) | ||
62 | { | ||
63 | if (task->tk_status != -EJUKEBOX) | ||
64 | return 0; | ||
65 | task->tk_status = 0; | ||
66 | rpc_restart_call(task); | ||
67 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | ||
68 | return 1; | ||
69 | } | ||
70 | |||
71 | /* | ||
72 | * Bare-bones access to getattr: this is for nfs_read_super. | ||
73 | */ | ||
74 | static int | ||
75 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | ||
76 | struct nfs_fsinfo *info) | ||
77 | { | ||
78 | int status; | ||
79 | |||
80 | dprintk("%s: call fsinfo\n", __FUNCTION__); | ||
81 | info->fattr->valid = 0; | ||
82 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); | ||
83 | dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); | ||
84 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { | ||
85 | status = rpc_call(server->client_sys, NFS3PROC_GETATTR, fhandle, info->fattr, 0); | ||
86 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); | ||
87 | } | ||
88 | return status; | ||
89 | } | ||
90 | |||
91 | /* | ||
92 | * One function for each procedure in the NFS protocol. | ||
93 | */ | ||
94 | static int | ||
95 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | ||
96 | struct nfs_fattr *fattr) | ||
97 | { | ||
98 | int status; | ||
99 | |||
100 | dprintk("NFS call getattr\n"); | ||
101 | fattr->valid = 0; | ||
102 | status = rpc_call(server->client, NFS3PROC_GETATTR, | ||
103 | fhandle, fattr, 0); | ||
104 | dprintk("NFS reply getattr: %d\n", status); | ||
105 | return status; | ||
106 | } | ||
107 | |||
108 | static int | ||
109 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | ||
110 | struct iattr *sattr) | ||
111 | { | ||
112 | struct inode *inode = dentry->d_inode; | ||
113 | struct nfs3_sattrargs arg = { | ||
114 | .fh = NFS_FH(inode), | ||
115 | .sattr = sattr, | ||
116 | }; | ||
117 | int status; | ||
118 | |||
119 | dprintk("NFS call setattr\n"); | ||
120 | fattr->valid = 0; | ||
121 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0); | ||
122 | dprintk("NFS reply setattr: %d\n", status); | ||
123 | return status; | ||
124 | } | ||
125 | |||
126 | static int | ||
127 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | ||
128 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | ||
129 | { | ||
130 | struct nfs_fattr dir_attr; | ||
131 | struct nfs3_diropargs arg = { | ||
132 | .fh = NFS_FH(dir), | ||
133 | .name = name->name, | ||
134 | .len = name->len | ||
135 | }; | ||
136 | struct nfs3_diropres res = { | ||
137 | .dir_attr = &dir_attr, | ||
138 | .fh = fhandle, | ||
139 | .fattr = fattr | ||
140 | }; | ||
141 | int status; | ||
142 | |||
143 | dprintk("NFS call lookup %s\n", name->name); | ||
144 | dir_attr.valid = 0; | ||
145 | fattr->valid = 0; | ||
146 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0); | ||
147 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) | ||
148 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR, | ||
149 | fhandle, fattr, 0); | ||
150 | dprintk("NFS reply lookup: %d\n", status); | ||
151 | if (status >= 0) | ||
152 | status = nfs_refresh_inode(dir, &dir_attr); | ||
153 | return status; | ||
154 | } | ||
155 | |||
156 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | ||
157 | { | ||
158 | struct nfs_fattr fattr; | ||
159 | struct nfs3_accessargs arg = { | ||
160 | .fh = NFS_FH(inode), | ||
161 | }; | ||
162 | struct nfs3_accessres res = { | ||
163 | .fattr = &fattr, | ||
164 | }; | ||
165 | struct rpc_message msg = { | ||
166 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | ||
167 | .rpc_argp = &arg, | ||
168 | .rpc_resp = &res, | ||
169 | .rpc_cred = entry->cred | ||
170 | }; | ||
171 | int mode = entry->mask; | ||
172 | int status; | ||
173 | |||
174 | dprintk("NFS call access\n"); | ||
175 | fattr.valid = 0; | ||
176 | |||
177 | if (mode & MAY_READ) | ||
178 | arg.access |= NFS3_ACCESS_READ; | ||
179 | if (S_ISDIR(inode->i_mode)) { | ||
180 | if (mode & MAY_WRITE) | ||
181 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | ||
182 | if (mode & MAY_EXEC) | ||
183 | arg.access |= NFS3_ACCESS_LOOKUP; | ||
184 | } else { | ||
185 | if (mode & MAY_WRITE) | ||
186 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | ||
187 | if (mode & MAY_EXEC) | ||
188 | arg.access |= NFS3_ACCESS_EXECUTE; | ||
189 | } | ||
190 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | ||
191 | nfs_refresh_inode(inode, &fattr); | ||
192 | if (status == 0) { | ||
193 | entry->mask = 0; | ||
194 | if (res.access & NFS3_ACCESS_READ) | ||
195 | entry->mask |= MAY_READ; | ||
196 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | ||
197 | entry->mask |= MAY_WRITE; | ||
198 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | ||
199 | entry->mask |= MAY_EXEC; | ||
200 | } | ||
201 | dprintk("NFS reply access: %d\n", status); | ||
202 | return status; | ||
203 | } | ||
204 | |||
205 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | ||
206 | unsigned int pgbase, unsigned int pglen) | ||
207 | { | ||
208 | struct nfs_fattr fattr; | ||
209 | struct nfs3_readlinkargs args = { | ||
210 | .fh = NFS_FH(inode), | ||
211 | .pgbase = pgbase, | ||
212 | .pglen = pglen, | ||
213 | .pages = &page | ||
214 | }; | ||
215 | int status; | ||
216 | |||
217 | dprintk("NFS call readlink\n"); | ||
218 | fattr.valid = 0; | ||
219 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK, | ||
220 | &args, &fattr, 0); | ||
221 | nfs_refresh_inode(inode, &fattr); | ||
222 | dprintk("NFS reply readlink: %d\n", status); | ||
223 | return status; | ||
224 | } | ||
225 | |||
226 | static int nfs3_proc_read(struct nfs_read_data *rdata) | ||
227 | { | ||
228 | int flags = rdata->flags; | ||
229 | struct inode * inode = rdata->inode; | ||
230 | struct nfs_fattr * fattr = rdata->res.fattr; | ||
231 | struct rpc_message msg = { | ||
232 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | ||
233 | .rpc_argp = &rdata->args, | ||
234 | .rpc_resp = &rdata->res, | ||
235 | .rpc_cred = rdata->cred, | ||
236 | }; | ||
237 | int status; | ||
238 | |||
239 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | ||
240 | (long long) rdata->args.offset); | ||
241 | fattr->valid = 0; | ||
242 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | ||
243 | if (status >= 0) | ||
244 | nfs_refresh_inode(inode, fattr); | ||
245 | dprintk("NFS reply read: %d\n", status); | ||
246 | return status; | ||
247 | } | ||
248 | |||
249 | static int nfs3_proc_write(struct nfs_write_data *wdata) | ||
250 | { | ||
251 | int rpcflags = wdata->flags; | ||
252 | struct inode * inode = wdata->inode; | ||
253 | struct nfs_fattr * fattr = wdata->res.fattr; | ||
254 | struct rpc_message msg = { | ||
255 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | ||
256 | .rpc_argp = &wdata->args, | ||
257 | .rpc_resp = &wdata->res, | ||
258 | .rpc_cred = wdata->cred, | ||
259 | }; | ||
260 | int status; | ||
261 | |||
262 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | ||
263 | (long long) wdata->args.offset); | ||
264 | fattr->valid = 0; | ||
265 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); | ||
266 | if (status >= 0) | ||
267 | nfs_refresh_inode(inode, fattr); | ||
268 | dprintk("NFS reply write: %d\n", status); | ||
269 | return status < 0? status : wdata->res.count; | ||
270 | } | ||
271 | |||
272 | static int nfs3_proc_commit(struct nfs_write_data *cdata) | ||
273 | { | ||
274 | struct inode * inode = cdata->inode; | ||
275 | struct nfs_fattr * fattr = cdata->res.fattr; | ||
276 | struct rpc_message msg = { | ||
277 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | ||
278 | .rpc_argp = &cdata->args, | ||
279 | .rpc_resp = &cdata->res, | ||
280 | .rpc_cred = cdata->cred, | ||
281 | }; | ||
282 | int status; | ||
283 | |||
284 | dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, | ||
285 | (long long) cdata->args.offset); | ||
286 | fattr->valid = 0; | ||
287 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | ||
288 | if (status >= 0) | ||
289 | nfs_refresh_inode(inode, fattr); | ||
290 | dprintk("NFS reply commit: %d\n", status); | ||
291 | return status; | ||
292 | } | ||
293 | |||
294 | /* | ||
295 | * Create a regular file. | ||
296 | * For now, we don't implement O_EXCL. | ||
297 | */ | ||
298 | static int | ||
299 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | ||
300 | int flags) | ||
301 | { | ||
302 | struct nfs_fh fhandle; | ||
303 | struct nfs_fattr fattr; | ||
304 | struct nfs_fattr dir_attr; | ||
305 | struct nfs3_createargs arg = { | ||
306 | .fh = NFS_FH(dir), | ||
307 | .name = dentry->d_name.name, | ||
308 | .len = dentry->d_name.len, | ||
309 | .sattr = sattr, | ||
310 | }; | ||
311 | struct nfs3_diropres res = { | ||
312 | .dir_attr = &dir_attr, | ||
313 | .fh = &fhandle, | ||
314 | .fattr = &fattr | ||
315 | }; | ||
316 | int status; | ||
317 | |||
318 | dprintk("NFS call create %s\n", dentry->d_name.name); | ||
319 | arg.createmode = NFS3_CREATE_UNCHECKED; | ||
320 | if (flags & O_EXCL) { | ||
321 | arg.createmode = NFS3_CREATE_EXCLUSIVE; | ||
322 | arg.verifier[0] = jiffies; | ||
323 | arg.verifier[1] = current->pid; | ||
324 | } | ||
325 | |||
326 | again: | ||
327 | dir_attr.valid = 0; | ||
328 | fattr.valid = 0; | ||
329 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0); | ||
330 | nfs_refresh_inode(dir, &dir_attr); | ||
331 | |||
332 | /* If the server doesn't support the exclusive creation semantics, | ||
333 | * try again with simple 'guarded' mode. */ | ||
334 | if (status == NFSERR_NOTSUPP) { | ||
335 | switch (arg.createmode) { | ||
336 | case NFS3_CREATE_EXCLUSIVE: | ||
337 | arg.createmode = NFS3_CREATE_GUARDED; | ||
338 | break; | ||
339 | |||
340 | case NFS3_CREATE_GUARDED: | ||
341 | arg.createmode = NFS3_CREATE_UNCHECKED; | ||
342 | break; | ||
343 | |||
344 | case NFS3_CREATE_UNCHECKED: | ||
345 | goto out; | ||
346 | } | ||
347 | goto again; | ||
348 | } | ||
349 | |||
350 | if (status == 0) | ||
351 | status = nfs_instantiate(dentry, &fhandle, &fattr); | ||
352 | if (status != 0) | ||
353 | goto out; | ||
354 | |||
355 | /* When we created the file with exclusive semantics, make | ||
356 | * sure we set the attributes afterwards. */ | ||
357 | if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { | ||
358 | dprintk("NFS call setattr (post-create)\n"); | ||
359 | |||
360 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | ||
361 | sattr->ia_valid |= ATTR_ATIME; | ||
362 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | ||
363 | sattr->ia_valid |= ATTR_MTIME; | ||
364 | |||
365 | /* Note: we could use a guarded setattr here, but I'm | ||
366 | * not sure this buys us anything (and I'd have | ||
367 | * to revamp the NFSv3 XDR code) */ | ||
368 | status = nfs3_proc_setattr(dentry, &fattr, sattr); | ||
369 | nfs_refresh_inode(dentry->d_inode, &fattr); | ||
370 | dprintk("NFS reply setattr (post-create): %d\n", status); | ||
371 | } | ||
372 | out: | ||
373 | dprintk("NFS reply create: %d\n", status); | ||
374 | return status; | ||
375 | } | ||
376 | |||
377 | static int | ||
378 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | ||
379 | { | ||
380 | struct nfs_fattr dir_attr; | ||
381 | struct nfs3_diropargs arg = { | ||
382 | .fh = NFS_FH(dir), | ||
383 | .name = name->name, | ||
384 | .len = name->len | ||
385 | }; | ||
386 | struct rpc_message msg = { | ||
387 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | ||
388 | .rpc_argp = &arg, | ||
389 | .rpc_resp = &dir_attr, | ||
390 | }; | ||
391 | int status; | ||
392 | |||
393 | dprintk("NFS call remove %s\n", name->name); | ||
394 | dir_attr.valid = 0; | ||
395 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | ||
396 | nfs_refresh_inode(dir, &dir_attr); | ||
397 | dprintk("NFS reply remove: %d\n", status); | ||
398 | return status; | ||
399 | } | ||
400 | |||
401 | static int | ||
402 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | ||
403 | { | ||
404 | struct unlinkxdr { | ||
405 | struct nfs3_diropargs arg; | ||
406 | struct nfs_fattr res; | ||
407 | } *ptr; | ||
408 | |||
409 | ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); | ||
410 | if (!ptr) | ||
411 | return -ENOMEM; | ||
412 | ptr->arg.fh = NFS_FH(dir->d_inode); | ||
413 | ptr->arg.name = name->name; | ||
414 | ptr->arg.len = name->len; | ||
415 | ptr->res.valid = 0; | ||
416 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; | ||
417 | msg->rpc_argp = &ptr->arg; | ||
418 | msg->rpc_resp = &ptr->res; | ||
419 | return 0; | ||
420 | } | ||
421 | |||
422 | static int | ||
423 | nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | ||
424 | { | ||
425 | struct rpc_message *msg = &task->tk_msg; | ||
426 | struct nfs_fattr *dir_attr; | ||
427 | |||
428 | if (nfs3_async_handle_jukebox(task)) | ||
429 | return 1; | ||
430 | if (msg->rpc_argp) { | ||
431 | dir_attr = (struct nfs_fattr*)msg->rpc_resp; | ||
432 | nfs_refresh_inode(dir->d_inode, dir_attr); | ||
433 | kfree(msg->rpc_argp); | ||
434 | } | ||
435 | return 0; | ||
436 | } | ||
437 | |||
438 | static int | ||
439 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | ||
440 | struct inode *new_dir, struct qstr *new_name) | ||
441 | { | ||
442 | struct nfs_fattr old_dir_attr, new_dir_attr; | ||
443 | struct nfs3_renameargs arg = { | ||
444 | .fromfh = NFS_FH(old_dir), | ||
445 | .fromname = old_name->name, | ||
446 | .fromlen = old_name->len, | ||
447 | .tofh = NFS_FH(new_dir), | ||
448 | .toname = new_name->name, | ||
449 | .tolen = new_name->len | ||
450 | }; | ||
451 | struct nfs3_renameres res = { | ||
452 | .fromattr = &old_dir_attr, | ||
453 | .toattr = &new_dir_attr | ||
454 | }; | ||
455 | int status; | ||
456 | |||
457 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | ||
458 | old_dir_attr.valid = 0; | ||
459 | new_dir_attr.valid = 0; | ||
460 | status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0); | ||
461 | nfs_refresh_inode(old_dir, &old_dir_attr); | ||
462 | nfs_refresh_inode(new_dir, &new_dir_attr); | ||
463 | dprintk("NFS reply rename: %d\n", status); | ||
464 | return status; | ||
465 | } | ||
466 | |||
467 | static int | ||
468 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | ||
469 | { | ||
470 | struct nfs_fattr dir_attr, fattr; | ||
471 | struct nfs3_linkargs arg = { | ||
472 | .fromfh = NFS_FH(inode), | ||
473 | .tofh = NFS_FH(dir), | ||
474 | .toname = name->name, | ||
475 | .tolen = name->len | ||
476 | }; | ||
477 | struct nfs3_linkres res = { | ||
478 | .dir_attr = &dir_attr, | ||
479 | .fattr = &fattr | ||
480 | }; | ||
481 | int status; | ||
482 | |||
483 | dprintk("NFS call link %s\n", name->name); | ||
484 | dir_attr.valid = 0; | ||
485 | fattr.valid = 0; | ||
486 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0); | ||
487 | nfs_refresh_inode(dir, &dir_attr); | ||
488 | nfs_refresh_inode(inode, &fattr); | ||
489 | dprintk("NFS reply link: %d\n", status); | ||
490 | return status; | ||
491 | } | ||
492 | |||
493 | static int | ||
494 | nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | ||
495 | struct iattr *sattr, struct nfs_fh *fhandle, | ||
496 | struct nfs_fattr *fattr) | ||
497 | { | ||
498 | struct nfs_fattr dir_attr; | ||
499 | struct nfs3_symlinkargs arg = { | ||
500 | .fromfh = NFS_FH(dir), | ||
501 | .fromname = name->name, | ||
502 | .fromlen = name->len, | ||
503 | .topath = path->name, | ||
504 | .tolen = path->len, | ||
505 | .sattr = sattr | ||
506 | }; | ||
507 | struct nfs3_diropres res = { | ||
508 | .dir_attr = &dir_attr, | ||
509 | .fh = fhandle, | ||
510 | .fattr = fattr | ||
511 | }; | ||
512 | int status; | ||
513 | |||
514 | if (path->len > NFS3_MAXPATHLEN) | ||
515 | return -ENAMETOOLONG; | ||
516 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | ||
517 | dir_attr.valid = 0; | ||
518 | fattr->valid = 0; | ||
519 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0); | ||
520 | nfs_refresh_inode(dir, &dir_attr); | ||
521 | dprintk("NFS reply symlink: %d\n", status); | ||
522 | return status; | ||
523 | } | ||
524 | |||
525 | static int | ||
526 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | ||
527 | { | ||
528 | struct nfs_fh fhandle; | ||
529 | struct nfs_fattr fattr, dir_attr; | ||
530 | struct nfs3_mkdirargs arg = { | ||
531 | .fh = NFS_FH(dir), | ||
532 | .name = dentry->d_name.name, | ||
533 | .len = dentry->d_name.len, | ||
534 | .sattr = sattr | ||
535 | }; | ||
536 | struct nfs3_diropres res = { | ||
537 | .dir_attr = &dir_attr, | ||
538 | .fh = &fhandle, | ||
539 | .fattr = &fattr | ||
540 | }; | ||
541 | int status; | ||
542 | |||
543 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | ||
544 | dir_attr.valid = 0; | ||
545 | fattr.valid = 0; | ||
546 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0); | ||
547 | nfs_refresh_inode(dir, &dir_attr); | ||
548 | if (status == 0) | ||
549 | status = nfs_instantiate(dentry, &fhandle, &fattr); | ||
550 | dprintk("NFS reply mkdir: %d\n", status); | ||
551 | return status; | ||
552 | } | ||
553 | |||
554 | static int | ||
555 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | ||
556 | { | ||
557 | struct nfs_fattr dir_attr; | ||
558 | struct nfs3_diropargs arg = { | ||
559 | .fh = NFS_FH(dir), | ||
560 | .name = name->name, | ||
561 | .len = name->len | ||
562 | }; | ||
563 | int status; | ||
564 | |||
565 | dprintk("NFS call rmdir %s\n", name->name); | ||
566 | dir_attr.valid = 0; | ||
567 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0); | ||
568 | nfs_refresh_inode(dir, &dir_attr); | ||
569 | dprintk("NFS reply rmdir: %d\n", status); | ||
570 | return status; | ||
571 | } | ||
572 | |||
573 | /* | ||
574 | * The READDIR implementation is somewhat hackish - we pass the user buffer | ||
575 | * to the encode function, which installs it in the receive iovec. | ||
576 | * The decode function itself doesn't perform any decoding, it just makes | ||
577 | * sure the reply is syntactically correct. | ||
578 | * | ||
579 | * Also note that this implementation handles both plain readdir and | ||
580 | * readdirplus. | ||
581 | */ | ||
582 | static int | ||
583 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | ||
584 | u64 cookie, struct page *page, unsigned int count, int plus) | ||
585 | { | ||
586 | struct inode *dir = dentry->d_inode; | ||
587 | struct nfs_fattr dir_attr; | ||
588 | u32 *verf = NFS_COOKIEVERF(dir); | ||
589 | struct nfs3_readdirargs arg = { | ||
590 | .fh = NFS_FH(dir), | ||
591 | .cookie = cookie, | ||
592 | .verf = {verf[0], verf[1]}, | ||
593 | .plus = plus, | ||
594 | .count = count, | ||
595 | .pages = &page | ||
596 | }; | ||
597 | struct nfs3_readdirres res = { | ||
598 | .dir_attr = &dir_attr, | ||
599 | .verf = verf, | ||
600 | .plus = plus | ||
601 | }; | ||
602 | struct rpc_message msg = { | ||
603 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | ||
604 | .rpc_argp = &arg, | ||
605 | .rpc_resp = &res, | ||
606 | .rpc_cred = cred | ||
607 | }; | ||
608 | int status; | ||
609 | |||
610 | lock_kernel(); | ||
611 | |||
612 | if (plus) | ||
613 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | ||
614 | |||
615 | dprintk("NFS call readdir%s %d\n", | ||
616 | plus? "plus" : "", (unsigned int) cookie); | ||
617 | |||
618 | dir_attr.valid = 0; | ||
619 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | ||
620 | nfs_refresh_inode(dir, &dir_attr); | ||
621 | dprintk("NFS reply readdir: %d\n", status); | ||
622 | unlock_kernel(); | ||
623 | return status; | ||
624 | } | ||
625 | |||
626 | static int | ||
627 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | ||
628 | dev_t rdev) | ||
629 | { | ||
630 | struct nfs_fh fh; | ||
631 | struct nfs_fattr fattr, dir_attr; | ||
632 | struct nfs3_mknodargs arg = { | ||
633 | .fh = NFS_FH(dir), | ||
634 | .name = dentry->d_name.name, | ||
635 | .len = dentry->d_name.len, | ||
636 | .sattr = sattr, | ||
637 | .rdev = rdev | ||
638 | }; | ||
639 | struct nfs3_diropres res = { | ||
640 | .dir_attr = &dir_attr, | ||
641 | .fh = &fh, | ||
642 | .fattr = &fattr | ||
643 | }; | ||
644 | int status; | ||
645 | |||
646 | switch (sattr->ia_mode & S_IFMT) { | ||
647 | case S_IFBLK: arg.type = NF3BLK; break; | ||
648 | case S_IFCHR: arg.type = NF3CHR; break; | ||
649 | case S_IFIFO: arg.type = NF3FIFO; break; | ||
650 | case S_IFSOCK: arg.type = NF3SOCK; break; | ||
651 | default: return -EINVAL; | ||
652 | } | ||
653 | |||
654 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | ||
655 | MAJOR(rdev), MINOR(rdev)); | ||
656 | dir_attr.valid = 0; | ||
657 | fattr.valid = 0; | ||
658 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0); | ||
659 | nfs_refresh_inode(dir, &dir_attr); | ||
660 | if (status == 0) | ||
661 | status = nfs_instantiate(dentry, &fh, &fattr); | ||
662 | dprintk("NFS reply mknod: %d\n", status); | ||
663 | return status; | ||
664 | } | ||
665 | |||
666 | static int | ||
667 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | ||
668 | struct nfs_fsstat *stat) | ||
669 | { | ||
670 | int status; | ||
671 | |||
672 | dprintk("NFS call fsstat\n"); | ||
673 | stat->fattr->valid = 0; | ||
674 | status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0); | ||
675 | dprintk("NFS reply statfs: %d\n", status); | ||
676 | return status; | ||
677 | } | ||
678 | |||
679 | static int | ||
680 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | ||
681 | struct nfs_fsinfo *info) | ||
682 | { | ||
683 | int status; | ||
684 | |||
685 | dprintk("NFS call fsinfo\n"); | ||
686 | info->fattr->valid = 0; | ||
687 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); | ||
688 | dprintk("NFS reply fsinfo: %d\n", status); | ||
689 | return status; | ||
690 | } | ||
691 | |||
692 | static int | ||
693 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | ||
694 | struct nfs_pathconf *info) | ||
695 | { | ||
696 | int status; | ||
697 | |||
698 | dprintk("NFS call pathconf\n"); | ||
699 | info->fattr->valid = 0; | ||
700 | status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0); | ||
701 | dprintk("NFS reply pathconf: %d\n", status); | ||
702 | return status; | ||
703 | } | ||
704 | |||
705 | extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); | ||
706 | |||
707 | static void | ||
708 | nfs3_read_done(struct rpc_task *task) | ||
709 | { | ||
710 | struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; | ||
711 | |||
712 | if (nfs3_async_handle_jukebox(task)) | ||
713 | return; | ||
714 | /* Call back common NFS readpage processing */ | ||
715 | if (task->tk_status >= 0) | ||
716 | nfs_refresh_inode(data->inode, &data->fattr); | ||
717 | nfs_readpage_result(task); | ||
718 | } | ||
719 | |||
720 | static void | ||
721 | nfs3_proc_read_setup(struct nfs_read_data *data) | ||
722 | { | ||
723 | struct rpc_task *task = &data->task; | ||
724 | struct inode *inode = data->inode; | ||
725 | int flags; | ||
726 | struct rpc_message msg = { | ||
727 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | ||
728 | .rpc_argp = &data->args, | ||
729 | .rpc_resp = &data->res, | ||
730 | .rpc_cred = data->cred, | ||
731 | }; | ||
732 | |||
733 | /* N.B. Do we need to test? Never called for swapfile inode */ | ||
734 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | ||
735 | |||
736 | /* Finalize the task. */ | ||
737 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags); | ||
738 | rpc_call_setup(task, &msg, 0); | ||
739 | } | ||
740 | |||
741 | static void | ||
742 | nfs3_write_done(struct rpc_task *task) | ||
743 | { | ||
744 | struct nfs_write_data *data; | ||
745 | |||
746 | if (nfs3_async_handle_jukebox(task)) | ||
747 | return; | ||
748 | data = (struct nfs_write_data *)task->tk_calldata; | ||
749 | if (task->tk_status >= 0) | ||
750 | nfs_refresh_inode(data->inode, data->res.fattr); | ||
751 | nfs_writeback_done(task); | ||
752 | } | ||
753 | |||
754 | static void | ||
755 | nfs3_proc_write_setup(struct nfs_write_data *data, int how) | ||
756 | { | ||
757 | struct rpc_task *task = &data->task; | ||
758 | struct inode *inode = data->inode; | ||
759 | int stable; | ||
760 | int flags; | ||
761 | struct rpc_message msg = { | ||
762 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | ||
763 | .rpc_argp = &data->args, | ||
764 | .rpc_resp = &data->res, | ||
765 | .rpc_cred = data->cred, | ||
766 | }; | ||
767 | |||
768 | if (how & FLUSH_STABLE) { | ||
769 | if (!NFS_I(inode)->ncommit) | ||
770 | stable = NFS_FILE_SYNC; | ||
771 | else | ||
772 | stable = NFS_DATA_SYNC; | ||
773 | } else | ||
774 | stable = NFS_UNSTABLE; | ||
775 | data->args.stable = stable; | ||
776 | |||
777 | /* Set the initial flags for the task. */ | ||
778 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | ||
779 | |||
780 | /* Finalize the task. */ | ||
781 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags); | ||
782 | rpc_call_setup(task, &msg, 0); | ||
783 | } | ||
784 | |||
785 | static void | ||
786 | nfs3_commit_done(struct rpc_task *task) | ||
787 | { | ||
788 | struct nfs_write_data *data; | ||
789 | |||
790 | if (nfs3_async_handle_jukebox(task)) | ||
791 | return; | ||
792 | data = (struct nfs_write_data *)task->tk_calldata; | ||
793 | if (task->tk_status >= 0) | ||
794 | nfs_refresh_inode(data->inode, data->res.fattr); | ||
795 | nfs_commit_done(task); | ||
796 | } | ||
797 | |||
798 | static void | ||
799 | nfs3_proc_commit_setup(struct nfs_write_data *data, int how) | ||
800 | { | ||
801 | struct rpc_task *task = &data->task; | ||
802 | struct inode *inode = data->inode; | ||
803 | int flags; | ||
804 | struct rpc_message msg = { | ||
805 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | ||
806 | .rpc_argp = &data->args, | ||
807 | .rpc_resp = &data->res, | ||
808 | .rpc_cred = data->cred, | ||
809 | }; | ||
810 | |||
811 | /* Set the initial flags for the task. */ | ||
812 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | ||
813 | |||
814 | /* Finalize the task. */ | ||
815 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags); | ||
816 | rpc_call_setup(task, &msg, 0); | ||
817 | } | ||
818 | |||
819 | static int | ||
820 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | ||
821 | { | ||
822 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | ||
823 | } | ||
824 | |||
825 | struct nfs_rpc_ops nfs_v3_clientops = { | ||
826 | .version = 3, /* protocol version */ | ||
827 | .dentry_ops = &nfs_dentry_operations, | ||
828 | .dir_inode_ops = &nfs_dir_inode_operations, | ||
829 | .getroot = nfs3_proc_get_root, | ||
830 | .getattr = nfs3_proc_getattr, | ||
831 | .setattr = nfs3_proc_setattr, | ||
832 | .lookup = nfs3_proc_lookup, | ||
833 | .access = nfs3_proc_access, | ||
834 | .readlink = nfs3_proc_readlink, | ||
835 | .read = nfs3_proc_read, | ||
836 | .write = nfs3_proc_write, | ||
837 | .commit = nfs3_proc_commit, | ||
838 | .create = nfs3_proc_create, | ||
839 | .remove = nfs3_proc_remove, | ||
840 | .unlink_setup = nfs3_proc_unlink_setup, | ||
841 | .unlink_done = nfs3_proc_unlink_done, | ||
842 | .rename = nfs3_proc_rename, | ||
843 | .link = nfs3_proc_link, | ||
844 | .symlink = nfs3_proc_symlink, | ||
845 | .mkdir = nfs3_proc_mkdir, | ||
846 | .rmdir = nfs3_proc_rmdir, | ||
847 | .readdir = nfs3_proc_readdir, | ||
848 | .mknod = nfs3_proc_mknod, | ||
849 | .statfs = nfs3_proc_statfs, | ||
850 | .fsinfo = nfs3_proc_fsinfo, | ||
851 | .pathconf = nfs3_proc_pathconf, | ||
852 | .decode_dirent = nfs3_decode_dirent, | ||
853 | .read_setup = nfs3_proc_read_setup, | ||
854 | .write_setup = nfs3_proc_write_setup, | ||
855 | .commit_setup = nfs3_proc_commit_setup, | ||
856 | .file_open = nfs_open, | ||
857 | .file_release = nfs_release, | ||
858 | .lock = nfs3_proc_lock, | ||
859 | }; | ||