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Commit | Line | Data |
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1da177e4 LT |
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> | |
b7fa0554 | 20 | #include <linux/nfs_mount.h> |
1da177e4 LT |
21 | |
22 | #define NFSDBG_FACILITY NFSDBG_PROC | |
23 | ||
24 | extern struct rpc_procinfo nfs3_procedures[]; | |
25 | ||
26 | /* A wrapper to handle the EJUKEBOX error message */ | |
27 | static int | |
28 | nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) | |
29 | { | |
30 | sigset_t oldset; | |
31 | int res; | |
32 | rpc_clnt_sigmask(clnt, &oldset); | |
33 | do { | |
34 | res = rpc_call_sync(clnt, msg, flags); | |
35 | if (res != -EJUKEBOX) | |
36 | break; | |
37 | set_current_state(TASK_INTERRUPTIBLE); | |
38 | schedule_timeout(NFS_JUKEBOX_RETRY_TIME); | |
39 | res = -ERESTARTSYS; | |
40 | } while (!signalled()); | |
41 | rpc_clnt_sigunmask(clnt, &oldset); | |
42 | return res; | |
43 | } | |
44 | ||
45 | static inline int | |
46 | nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags) | |
47 | { | |
48 | struct rpc_message msg = { | |
b7fa0554 | 49 | .rpc_proc = &clnt->cl_procinfo[proc], |
1da177e4 LT |
50 | .rpc_argp = argp, |
51 | .rpc_resp = resp, | |
52 | }; | |
53 | return nfs3_rpc_wrapper(clnt, &msg, flags); | |
54 | } | |
55 | ||
56 | #define rpc_call(clnt, proc, argp, resp, flags) \ | |
57 | nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags) | |
58 | #define rpc_call_sync(clnt, msg, flags) \ | |
59 | nfs3_rpc_wrapper(clnt, msg, flags) | |
60 | ||
61 | static int | |
62 | nfs3_async_handle_jukebox(struct rpc_task *task) | |
63 | { | |
64 | if (task->tk_status != -EJUKEBOX) | |
65 | return 0; | |
66 | task->tk_status = 0; | |
67 | rpc_restart_call(task); | |
68 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
69 | return 1; | |
70 | } | |
71 | ||
72 | /* | |
73 | * Bare-bones access to getattr: this is for nfs_read_super. | |
74 | */ | |
75 | static int | |
76 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
77 | struct nfs_fsinfo *info) | |
78 | { | |
79 | int status; | |
80 | ||
81 | dprintk("%s: call fsinfo\n", __FUNCTION__); | |
82 | info->fattr->valid = 0; | |
83 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); | |
84 | dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); | |
85 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { | |
86 | status = rpc_call(server->client_sys, NFS3PROC_GETATTR, fhandle, info->fattr, 0); | |
87 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); | |
88 | } | |
89 | return status; | |
90 | } | |
91 | ||
92 | /* | |
93 | * One function for each procedure in the NFS protocol. | |
94 | */ | |
95 | static int | |
96 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
97 | struct nfs_fattr *fattr) | |
98 | { | |
99 | int status; | |
100 | ||
101 | dprintk("NFS call getattr\n"); | |
102 | fattr->valid = 0; | |
103 | status = rpc_call(server->client, NFS3PROC_GETATTR, | |
104 | fhandle, fattr, 0); | |
105 | dprintk("NFS reply getattr: %d\n", status); | |
106 | return status; | |
107 | } | |
108 | ||
109 | static int | |
110 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
111 | struct iattr *sattr) | |
112 | { | |
113 | struct inode *inode = dentry->d_inode; | |
114 | struct nfs3_sattrargs arg = { | |
115 | .fh = NFS_FH(inode), | |
116 | .sattr = sattr, | |
117 | }; | |
118 | int status; | |
119 | ||
120 | dprintk("NFS call setattr\n"); | |
121 | fattr->valid = 0; | |
122 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0); | |
65e4308d TM |
123 | if (status == 0) |
124 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
125 | dprintk("NFS reply setattr: %d\n", status); |
126 | return status; | |
127 | } | |
128 | ||
129 | static int | |
130 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
131 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
132 | { | |
133 | struct nfs_fattr dir_attr; | |
134 | struct nfs3_diropargs arg = { | |
135 | .fh = NFS_FH(dir), | |
136 | .name = name->name, | |
137 | .len = name->len | |
138 | }; | |
139 | struct nfs3_diropres res = { | |
140 | .dir_attr = &dir_attr, | |
141 | .fh = fhandle, | |
142 | .fattr = fattr | |
143 | }; | |
144 | int status; | |
145 | ||
146 | dprintk("NFS call lookup %s\n", name->name); | |
147 | dir_attr.valid = 0; | |
148 | fattr->valid = 0; | |
149 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0); | |
150 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) | |
151 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR, | |
152 | fhandle, fattr, 0); | |
153 | dprintk("NFS reply lookup: %d\n", status); | |
154 | if (status >= 0) | |
155 | status = nfs_refresh_inode(dir, &dir_attr); | |
156 | return status; | |
157 | } | |
158 | ||
159 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
160 | { | |
161 | struct nfs_fattr fattr; | |
162 | struct nfs3_accessargs arg = { | |
163 | .fh = NFS_FH(inode), | |
164 | }; | |
165 | struct nfs3_accessres res = { | |
166 | .fattr = &fattr, | |
167 | }; | |
168 | struct rpc_message msg = { | |
169 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
170 | .rpc_argp = &arg, | |
171 | .rpc_resp = &res, | |
172 | .rpc_cred = entry->cred | |
173 | }; | |
174 | int mode = entry->mask; | |
175 | int status; | |
176 | ||
177 | dprintk("NFS call access\n"); | |
178 | fattr.valid = 0; | |
179 | ||
180 | if (mode & MAY_READ) | |
181 | arg.access |= NFS3_ACCESS_READ; | |
182 | if (S_ISDIR(inode->i_mode)) { | |
183 | if (mode & MAY_WRITE) | |
184 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
185 | if (mode & MAY_EXEC) | |
186 | arg.access |= NFS3_ACCESS_LOOKUP; | |
187 | } else { | |
188 | if (mode & MAY_WRITE) | |
189 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
190 | if (mode & MAY_EXEC) | |
191 | arg.access |= NFS3_ACCESS_EXECUTE; | |
192 | } | |
193 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
194 | nfs_refresh_inode(inode, &fattr); | |
195 | if (status == 0) { | |
196 | entry->mask = 0; | |
197 | if (res.access & NFS3_ACCESS_READ) | |
198 | entry->mask |= MAY_READ; | |
199 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
200 | entry->mask |= MAY_WRITE; | |
201 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
202 | entry->mask |= MAY_EXEC; | |
203 | } | |
204 | dprintk("NFS reply access: %d\n", status); | |
205 | return status; | |
206 | } | |
207 | ||
208 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
209 | unsigned int pgbase, unsigned int pglen) | |
210 | { | |
211 | struct nfs_fattr fattr; | |
212 | struct nfs3_readlinkargs args = { | |
213 | .fh = NFS_FH(inode), | |
214 | .pgbase = pgbase, | |
215 | .pglen = pglen, | |
216 | .pages = &page | |
217 | }; | |
218 | int status; | |
219 | ||
220 | dprintk("NFS call readlink\n"); | |
221 | fattr.valid = 0; | |
222 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK, | |
223 | &args, &fattr, 0); | |
224 | nfs_refresh_inode(inode, &fattr); | |
225 | dprintk("NFS reply readlink: %d\n", status); | |
226 | return status; | |
227 | } | |
228 | ||
229 | static int nfs3_proc_read(struct nfs_read_data *rdata) | |
230 | { | |
231 | int flags = rdata->flags; | |
232 | struct inode * inode = rdata->inode; | |
233 | struct nfs_fattr * fattr = rdata->res.fattr; | |
234 | struct rpc_message msg = { | |
235 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
236 | .rpc_argp = &rdata->args, | |
237 | .rpc_resp = &rdata->res, | |
238 | .rpc_cred = rdata->cred, | |
239 | }; | |
240 | int status; | |
241 | ||
242 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | |
243 | (long long) rdata->args.offset); | |
244 | fattr->valid = 0; | |
245 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | |
246 | if (status >= 0) | |
247 | nfs_refresh_inode(inode, fattr); | |
248 | dprintk("NFS reply read: %d\n", status); | |
249 | return status; | |
250 | } | |
251 | ||
252 | static int nfs3_proc_write(struct nfs_write_data *wdata) | |
253 | { | |
254 | int rpcflags = wdata->flags; | |
255 | struct inode * inode = wdata->inode; | |
256 | struct nfs_fattr * fattr = wdata->res.fattr; | |
257 | struct rpc_message msg = { | |
258 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
259 | .rpc_argp = &wdata->args, | |
260 | .rpc_resp = &wdata->res, | |
261 | .rpc_cred = wdata->cred, | |
262 | }; | |
263 | int status; | |
264 | ||
265 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | |
266 | (long long) wdata->args.offset); | |
267 | fattr->valid = 0; | |
268 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); | |
269 | if (status >= 0) | |
270 | nfs_refresh_inode(inode, fattr); | |
271 | dprintk("NFS reply write: %d\n", status); | |
272 | return status < 0? status : wdata->res.count; | |
273 | } | |
274 | ||
275 | static int nfs3_proc_commit(struct nfs_write_data *cdata) | |
276 | { | |
277 | struct inode * inode = cdata->inode; | |
278 | struct nfs_fattr * fattr = cdata->res.fattr; | |
279 | struct rpc_message msg = { | |
280 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
281 | .rpc_argp = &cdata->args, | |
282 | .rpc_resp = &cdata->res, | |
283 | .rpc_cred = cdata->cred, | |
284 | }; | |
285 | int status; | |
286 | ||
287 | dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, | |
288 | (long long) cdata->args.offset); | |
289 | fattr->valid = 0; | |
290 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
291 | if (status >= 0) | |
292 | nfs_refresh_inode(inode, fattr); | |
293 | dprintk("NFS reply commit: %d\n", status); | |
294 | return status; | |
295 | } | |
296 | ||
297 | /* | |
298 | * Create a regular file. | |
299 | * For now, we don't implement O_EXCL. | |
300 | */ | |
301 | static int | |
302 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
303 | int flags) | |
304 | { | |
305 | struct nfs_fh fhandle; | |
306 | struct nfs_fattr fattr; | |
307 | struct nfs_fattr dir_attr; | |
308 | struct nfs3_createargs arg = { | |
309 | .fh = NFS_FH(dir), | |
310 | .name = dentry->d_name.name, | |
311 | .len = dentry->d_name.len, | |
312 | .sattr = sattr, | |
313 | }; | |
314 | struct nfs3_diropres res = { | |
315 | .dir_attr = &dir_attr, | |
316 | .fh = &fhandle, | |
317 | .fattr = &fattr | |
318 | }; | |
055ffbea AG |
319 | mode_t mode = sattr->ia_mode; |
320 | int status; | |
1da177e4 LT |
321 | |
322 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
323 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
324 | if (flags & O_EXCL) { | |
325 | arg.createmode = NFS3_CREATE_EXCLUSIVE; | |
326 | arg.verifier[0] = jiffies; | |
327 | arg.verifier[1] = current->pid; | |
328 | } | |
329 | ||
055ffbea AG |
330 | sattr->ia_mode &= ~current->fs->umask; |
331 | ||
1da177e4 LT |
332 | again: |
333 | dir_attr.valid = 0; | |
334 | fattr.valid = 0; | |
335 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0); | |
336 | nfs_refresh_inode(dir, &dir_attr); | |
337 | ||
338 | /* If the server doesn't support the exclusive creation semantics, | |
339 | * try again with simple 'guarded' mode. */ | |
340 | if (status == NFSERR_NOTSUPP) { | |
341 | switch (arg.createmode) { | |
342 | case NFS3_CREATE_EXCLUSIVE: | |
343 | arg.createmode = NFS3_CREATE_GUARDED; | |
344 | break; | |
345 | ||
346 | case NFS3_CREATE_GUARDED: | |
347 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
348 | break; | |
349 | ||
350 | case NFS3_CREATE_UNCHECKED: | |
351 | goto out; | |
352 | } | |
353 | goto again; | |
354 | } | |
355 | ||
356 | if (status == 0) | |
357 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
358 | if (status != 0) | |
359 | goto out; | |
360 | ||
361 | /* When we created the file with exclusive semantics, make | |
362 | * sure we set the attributes afterwards. */ | |
363 | if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { | |
364 | dprintk("NFS call setattr (post-create)\n"); | |
365 | ||
366 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
367 | sattr->ia_valid |= ATTR_ATIME; | |
368 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
369 | sattr->ia_valid |= ATTR_MTIME; | |
370 | ||
371 | /* Note: we could use a guarded setattr here, but I'm | |
372 | * not sure this buys us anything (and I'd have | |
373 | * to revamp the NFSv3 XDR code) */ | |
374 | status = nfs3_proc_setattr(dentry, &fattr, sattr); | |
65e4308d TM |
375 | if (status == 0) |
376 | nfs_setattr_update_inode(dentry->d_inode, sattr); | |
1da177e4 LT |
377 | nfs_refresh_inode(dentry->d_inode, &fattr); |
378 | dprintk("NFS reply setattr (post-create): %d\n", status); | |
379 | } | |
055ffbea AG |
380 | if (status != 0) |
381 | goto out; | |
382 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
1da177e4 LT |
383 | out: |
384 | dprintk("NFS reply create: %d\n", status); | |
385 | return status; | |
386 | } | |
387 | ||
388 | static int | |
389 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
390 | { | |
391 | struct nfs_fattr dir_attr; | |
392 | struct nfs3_diropargs arg = { | |
393 | .fh = NFS_FH(dir), | |
394 | .name = name->name, | |
395 | .len = name->len | |
396 | }; | |
397 | struct rpc_message msg = { | |
398 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
399 | .rpc_argp = &arg, | |
400 | .rpc_resp = &dir_attr, | |
401 | }; | |
402 | int status; | |
403 | ||
404 | dprintk("NFS call remove %s\n", name->name); | |
405 | dir_attr.valid = 0; | |
406 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
407 | nfs_refresh_inode(dir, &dir_attr); | |
408 | dprintk("NFS reply remove: %d\n", status); | |
409 | return status; | |
410 | } | |
411 | ||
412 | static int | |
413 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | |
414 | { | |
415 | struct unlinkxdr { | |
416 | struct nfs3_diropargs arg; | |
417 | struct nfs_fattr res; | |
418 | } *ptr; | |
419 | ||
420 | ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); | |
421 | if (!ptr) | |
422 | return -ENOMEM; | |
423 | ptr->arg.fh = NFS_FH(dir->d_inode); | |
424 | ptr->arg.name = name->name; | |
425 | ptr->arg.len = name->len; | |
426 | ptr->res.valid = 0; | |
427 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; | |
428 | msg->rpc_argp = &ptr->arg; | |
429 | msg->rpc_resp = &ptr->res; | |
430 | return 0; | |
431 | } | |
432 | ||
433 | static int | |
434 | nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
435 | { | |
436 | struct rpc_message *msg = &task->tk_msg; | |
437 | struct nfs_fattr *dir_attr; | |
438 | ||
439 | if (nfs3_async_handle_jukebox(task)) | |
440 | return 1; | |
441 | if (msg->rpc_argp) { | |
442 | dir_attr = (struct nfs_fattr*)msg->rpc_resp; | |
443 | nfs_refresh_inode(dir->d_inode, dir_attr); | |
444 | kfree(msg->rpc_argp); | |
445 | } | |
446 | return 0; | |
447 | } | |
448 | ||
449 | static int | |
450 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
451 | struct inode *new_dir, struct qstr *new_name) | |
452 | { | |
453 | struct nfs_fattr old_dir_attr, new_dir_attr; | |
454 | struct nfs3_renameargs arg = { | |
455 | .fromfh = NFS_FH(old_dir), | |
456 | .fromname = old_name->name, | |
457 | .fromlen = old_name->len, | |
458 | .tofh = NFS_FH(new_dir), | |
459 | .toname = new_name->name, | |
460 | .tolen = new_name->len | |
461 | }; | |
462 | struct nfs3_renameres res = { | |
463 | .fromattr = &old_dir_attr, | |
464 | .toattr = &new_dir_attr | |
465 | }; | |
466 | int status; | |
467 | ||
468 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
469 | old_dir_attr.valid = 0; | |
470 | new_dir_attr.valid = 0; | |
471 | status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0); | |
472 | nfs_refresh_inode(old_dir, &old_dir_attr); | |
473 | nfs_refresh_inode(new_dir, &new_dir_attr); | |
474 | dprintk("NFS reply rename: %d\n", status); | |
475 | return status; | |
476 | } | |
477 | ||
478 | static int | |
479 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
480 | { | |
481 | struct nfs_fattr dir_attr, fattr; | |
482 | struct nfs3_linkargs arg = { | |
483 | .fromfh = NFS_FH(inode), | |
484 | .tofh = NFS_FH(dir), | |
485 | .toname = name->name, | |
486 | .tolen = name->len | |
487 | }; | |
488 | struct nfs3_linkres res = { | |
489 | .dir_attr = &dir_attr, | |
490 | .fattr = &fattr | |
491 | }; | |
492 | int status; | |
493 | ||
494 | dprintk("NFS call link %s\n", name->name); | |
495 | dir_attr.valid = 0; | |
496 | fattr.valid = 0; | |
497 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0); | |
498 | nfs_refresh_inode(dir, &dir_attr); | |
499 | nfs_refresh_inode(inode, &fattr); | |
500 | dprintk("NFS reply link: %d\n", status); | |
501 | return status; | |
502 | } | |
503 | ||
504 | static int | |
505 | nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | |
506 | struct iattr *sattr, struct nfs_fh *fhandle, | |
507 | struct nfs_fattr *fattr) | |
508 | { | |
509 | struct nfs_fattr dir_attr; | |
510 | struct nfs3_symlinkargs arg = { | |
511 | .fromfh = NFS_FH(dir), | |
512 | .fromname = name->name, | |
513 | .fromlen = name->len, | |
514 | .topath = path->name, | |
515 | .tolen = path->len, | |
516 | .sattr = sattr | |
517 | }; | |
518 | struct nfs3_diropres res = { | |
519 | .dir_attr = &dir_attr, | |
520 | .fh = fhandle, | |
521 | .fattr = fattr | |
522 | }; | |
523 | int status; | |
524 | ||
525 | if (path->len > NFS3_MAXPATHLEN) | |
526 | return -ENAMETOOLONG; | |
527 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | |
528 | dir_attr.valid = 0; | |
529 | fattr->valid = 0; | |
530 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0); | |
531 | nfs_refresh_inode(dir, &dir_attr); | |
532 | dprintk("NFS reply symlink: %d\n", status); | |
533 | return status; | |
534 | } | |
535 | ||
536 | static int | |
537 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
538 | { | |
539 | struct nfs_fh fhandle; | |
540 | struct nfs_fattr fattr, dir_attr; | |
541 | struct nfs3_mkdirargs arg = { | |
542 | .fh = NFS_FH(dir), | |
543 | .name = dentry->d_name.name, | |
544 | .len = dentry->d_name.len, | |
545 | .sattr = sattr | |
546 | }; | |
547 | struct nfs3_diropres res = { | |
548 | .dir_attr = &dir_attr, | |
549 | .fh = &fhandle, | |
550 | .fattr = &fattr | |
551 | }; | |
055ffbea AG |
552 | int mode = sattr->ia_mode; |
553 | int status; | |
1da177e4 LT |
554 | |
555 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
556 | dir_attr.valid = 0; | |
557 | fattr.valid = 0; | |
055ffbea AG |
558 | |
559 | sattr->ia_mode &= ~current->fs->umask; | |
560 | ||
1da177e4 LT |
561 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0); |
562 | nfs_refresh_inode(dir, &dir_attr); | |
055ffbea AG |
563 | if (status != 0) |
564 | goto out; | |
565 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
566 | if (status != 0) | |
567 | goto out; | |
568 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
569 | out: | |
1da177e4 LT |
570 | dprintk("NFS reply mkdir: %d\n", status); |
571 | return status; | |
572 | } | |
573 | ||
574 | static int | |
575 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
576 | { | |
577 | struct nfs_fattr dir_attr; | |
578 | struct nfs3_diropargs arg = { | |
579 | .fh = NFS_FH(dir), | |
580 | .name = name->name, | |
581 | .len = name->len | |
582 | }; | |
583 | int status; | |
584 | ||
585 | dprintk("NFS call rmdir %s\n", name->name); | |
586 | dir_attr.valid = 0; | |
587 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0); | |
588 | nfs_refresh_inode(dir, &dir_attr); | |
589 | dprintk("NFS reply rmdir: %d\n", status); | |
590 | return status; | |
591 | } | |
592 | ||
593 | /* | |
594 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
595 | * to the encode function, which installs it in the receive iovec. | |
596 | * The decode function itself doesn't perform any decoding, it just makes | |
597 | * sure the reply is syntactically correct. | |
598 | * | |
599 | * Also note that this implementation handles both plain readdir and | |
600 | * readdirplus. | |
601 | */ | |
602 | static int | |
603 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
604 | u64 cookie, struct page *page, unsigned int count, int plus) | |
605 | { | |
606 | struct inode *dir = dentry->d_inode; | |
607 | struct nfs_fattr dir_attr; | |
608 | u32 *verf = NFS_COOKIEVERF(dir); | |
609 | struct nfs3_readdirargs arg = { | |
610 | .fh = NFS_FH(dir), | |
611 | .cookie = cookie, | |
612 | .verf = {verf[0], verf[1]}, | |
613 | .plus = plus, | |
614 | .count = count, | |
615 | .pages = &page | |
616 | }; | |
617 | struct nfs3_readdirres res = { | |
618 | .dir_attr = &dir_attr, | |
619 | .verf = verf, | |
620 | .plus = plus | |
621 | }; | |
622 | struct rpc_message msg = { | |
623 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
624 | .rpc_argp = &arg, | |
625 | .rpc_resp = &res, | |
626 | .rpc_cred = cred | |
627 | }; | |
628 | int status; | |
629 | ||
630 | lock_kernel(); | |
631 | ||
632 | if (plus) | |
633 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
634 | ||
635 | dprintk("NFS call readdir%s %d\n", | |
636 | plus? "plus" : "", (unsigned int) cookie); | |
637 | ||
638 | dir_attr.valid = 0; | |
639 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
640 | nfs_refresh_inode(dir, &dir_attr); | |
641 | dprintk("NFS reply readdir: %d\n", status); | |
642 | unlock_kernel(); | |
643 | return status; | |
644 | } | |
645 | ||
646 | static int | |
647 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
648 | dev_t rdev) | |
649 | { | |
650 | struct nfs_fh fh; | |
651 | struct nfs_fattr fattr, dir_attr; | |
652 | struct nfs3_mknodargs arg = { | |
653 | .fh = NFS_FH(dir), | |
654 | .name = dentry->d_name.name, | |
655 | .len = dentry->d_name.len, | |
656 | .sattr = sattr, | |
657 | .rdev = rdev | |
658 | }; | |
659 | struct nfs3_diropres res = { | |
660 | .dir_attr = &dir_attr, | |
661 | .fh = &fh, | |
662 | .fattr = &fattr | |
663 | }; | |
055ffbea | 664 | mode_t mode = sattr->ia_mode; |
1da177e4 LT |
665 | int status; |
666 | ||
667 | switch (sattr->ia_mode & S_IFMT) { | |
668 | case S_IFBLK: arg.type = NF3BLK; break; | |
669 | case S_IFCHR: arg.type = NF3CHR; break; | |
670 | case S_IFIFO: arg.type = NF3FIFO; break; | |
671 | case S_IFSOCK: arg.type = NF3SOCK; break; | |
672 | default: return -EINVAL; | |
673 | } | |
674 | ||
675 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
676 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea AG |
677 | |
678 | sattr->ia_mode &= ~current->fs->umask; | |
679 | ||
1da177e4 LT |
680 | dir_attr.valid = 0; |
681 | fattr.valid = 0; | |
682 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0); | |
683 | nfs_refresh_inode(dir, &dir_attr); | |
055ffbea AG |
684 | if (status != 0) |
685 | goto out; | |
686 | status = nfs_instantiate(dentry, &fh, &fattr); | |
687 | if (status != 0) | |
688 | goto out; | |
689 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
690 | out: | |
1da177e4 LT |
691 | dprintk("NFS reply mknod: %d\n", status); |
692 | return status; | |
693 | } | |
694 | ||
695 | static int | |
696 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
697 | struct nfs_fsstat *stat) | |
698 | { | |
699 | int status; | |
700 | ||
701 | dprintk("NFS call fsstat\n"); | |
702 | stat->fattr->valid = 0; | |
703 | status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0); | |
704 | dprintk("NFS reply statfs: %d\n", status); | |
705 | return status; | |
706 | } | |
707 | ||
708 | static int | |
709 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
710 | struct nfs_fsinfo *info) | |
711 | { | |
712 | int status; | |
713 | ||
714 | dprintk("NFS call fsinfo\n"); | |
715 | info->fattr->valid = 0; | |
716 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); | |
717 | dprintk("NFS reply fsinfo: %d\n", status); | |
718 | return status; | |
719 | } | |
720 | ||
721 | static int | |
722 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
723 | struct nfs_pathconf *info) | |
724 | { | |
725 | int status; | |
726 | ||
727 | dprintk("NFS call pathconf\n"); | |
728 | info->fattr->valid = 0; | |
729 | status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0); | |
730 | dprintk("NFS reply pathconf: %d\n", status); | |
731 | return status; | |
732 | } | |
733 | ||
734 | extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); | |
735 | ||
736 | static void | |
737 | nfs3_read_done(struct rpc_task *task) | |
738 | { | |
739 | struct nfs_write_data *data = (struct nfs_write_data *) task->tk_calldata; | |
740 | ||
741 | if (nfs3_async_handle_jukebox(task)) | |
742 | return; | |
743 | /* Call back common NFS readpage processing */ | |
744 | if (task->tk_status >= 0) | |
745 | nfs_refresh_inode(data->inode, &data->fattr); | |
746 | nfs_readpage_result(task); | |
747 | } | |
748 | ||
749 | static void | |
750 | nfs3_proc_read_setup(struct nfs_read_data *data) | |
751 | { | |
752 | struct rpc_task *task = &data->task; | |
753 | struct inode *inode = data->inode; | |
754 | int flags; | |
755 | struct rpc_message msg = { | |
756 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
757 | .rpc_argp = &data->args, | |
758 | .rpc_resp = &data->res, | |
759 | .rpc_cred = data->cred, | |
760 | }; | |
761 | ||
762 | /* N.B. Do we need to test? Never called for swapfile inode */ | |
763 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | |
764 | ||
765 | /* Finalize the task. */ | |
766 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags); | |
767 | rpc_call_setup(task, &msg, 0); | |
768 | } | |
769 | ||
770 | static void | |
771 | nfs3_write_done(struct rpc_task *task) | |
772 | { | |
773 | struct nfs_write_data *data; | |
774 | ||
775 | if (nfs3_async_handle_jukebox(task)) | |
776 | return; | |
777 | data = (struct nfs_write_data *)task->tk_calldata; | |
778 | if (task->tk_status >= 0) | |
779 | nfs_refresh_inode(data->inode, data->res.fattr); | |
780 | nfs_writeback_done(task); | |
781 | } | |
782 | ||
783 | static void | |
784 | nfs3_proc_write_setup(struct nfs_write_data *data, int how) | |
785 | { | |
786 | struct rpc_task *task = &data->task; | |
787 | struct inode *inode = data->inode; | |
788 | int stable; | |
789 | int flags; | |
790 | struct rpc_message msg = { | |
791 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
792 | .rpc_argp = &data->args, | |
793 | .rpc_resp = &data->res, | |
794 | .rpc_cred = data->cred, | |
795 | }; | |
796 | ||
797 | if (how & FLUSH_STABLE) { | |
798 | if (!NFS_I(inode)->ncommit) | |
799 | stable = NFS_FILE_SYNC; | |
800 | else | |
801 | stable = NFS_DATA_SYNC; | |
802 | } else | |
803 | stable = NFS_UNSTABLE; | |
804 | data->args.stable = stable; | |
805 | ||
806 | /* Set the initial flags for the task. */ | |
807 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
808 | ||
809 | /* Finalize the task. */ | |
810 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags); | |
811 | rpc_call_setup(task, &msg, 0); | |
812 | } | |
813 | ||
814 | static void | |
815 | nfs3_commit_done(struct rpc_task *task) | |
816 | { | |
817 | struct nfs_write_data *data; | |
818 | ||
819 | if (nfs3_async_handle_jukebox(task)) | |
820 | return; | |
821 | data = (struct nfs_write_data *)task->tk_calldata; | |
822 | if (task->tk_status >= 0) | |
823 | nfs_refresh_inode(data->inode, data->res.fattr); | |
824 | nfs_commit_done(task); | |
825 | } | |
826 | ||
827 | static void | |
828 | nfs3_proc_commit_setup(struct nfs_write_data *data, int how) | |
829 | { | |
830 | struct rpc_task *task = &data->task; | |
831 | struct inode *inode = data->inode; | |
832 | int flags; | |
833 | struct rpc_message msg = { | |
834 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
835 | .rpc_argp = &data->args, | |
836 | .rpc_resp = &data->res, | |
837 | .rpc_cred = data->cred, | |
838 | }; | |
839 | ||
840 | /* Set the initial flags for the task. */ | |
841 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
842 | ||
843 | /* Finalize the task. */ | |
844 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags); | |
845 | rpc_call_setup(task, &msg, 0); | |
846 | } | |
847 | ||
848 | static int | |
849 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
850 | { | |
851 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | |
852 | } | |
853 | ||
854 | struct nfs_rpc_ops nfs_v3_clientops = { | |
855 | .version = 3, /* protocol version */ | |
856 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
857 | .dir_inode_ops = &nfs3_dir_inode_operations, |
858 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
859 | .getroot = nfs3_proc_get_root, |
860 | .getattr = nfs3_proc_getattr, | |
861 | .setattr = nfs3_proc_setattr, | |
862 | .lookup = nfs3_proc_lookup, | |
863 | .access = nfs3_proc_access, | |
864 | .readlink = nfs3_proc_readlink, | |
865 | .read = nfs3_proc_read, | |
866 | .write = nfs3_proc_write, | |
867 | .commit = nfs3_proc_commit, | |
868 | .create = nfs3_proc_create, | |
869 | .remove = nfs3_proc_remove, | |
870 | .unlink_setup = nfs3_proc_unlink_setup, | |
871 | .unlink_done = nfs3_proc_unlink_done, | |
872 | .rename = nfs3_proc_rename, | |
873 | .link = nfs3_proc_link, | |
874 | .symlink = nfs3_proc_symlink, | |
875 | .mkdir = nfs3_proc_mkdir, | |
876 | .rmdir = nfs3_proc_rmdir, | |
877 | .readdir = nfs3_proc_readdir, | |
878 | .mknod = nfs3_proc_mknod, | |
879 | .statfs = nfs3_proc_statfs, | |
880 | .fsinfo = nfs3_proc_fsinfo, | |
881 | .pathconf = nfs3_proc_pathconf, | |
882 | .decode_dirent = nfs3_decode_dirent, | |
883 | .read_setup = nfs3_proc_read_setup, | |
884 | .write_setup = nfs3_proc_write_setup, | |
885 | .commit_setup = nfs3_proc_commit_setup, | |
886 | .file_open = nfs_open, | |
887 | .file_release = nfs_release, | |
888 | .lock = nfs3_proc_lock, | |
5c6a9f7d | 889 | .clear_acl_cache = nfs3_forget_cached_acls, |
1da177e4 | 890 | }; |