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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; | |
041e0e3b | 37 | schedule_timeout_interruptible(NFS_JUKEBOX_RETRY_TIME); |
1da177e4 LT |
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 = { | |
b7fa0554 | 48 | .rpc_proc = &clnt->cl_procinfo[proc], |
1da177e4 LT |
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); | |
65e4308d TM |
122 | if (status == 0) |
123 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
124 | dprintk("NFS reply setattr: %d\n", status); |
125 | return status; | |
126 | } | |
127 | ||
128 | static int | |
129 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
130 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
131 | { | |
132 | struct nfs_fattr dir_attr; | |
133 | struct nfs3_diropargs arg = { | |
134 | .fh = NFS_FH(dir), | |
135 | .name = name->name, | |
136 | .len = name->len | |
137 | }; | |
138 | struct nfs3_diropres res = { | |
139 | .dir_attr = &dir_attr, | |
140 | .fh = fhandle, | |
141 | .fattr = fattr | |
142 | }; | |
143 | int status; | |
144 | ||
145 | dprintk("NFS call lookup %s\n", name->name); | |
146 | dir_attr.valid = 0; | |
147 | fattr->valid = 0; | |
148 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0); | |
149 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) | |
150 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR, | |
151 | fhandle, fattr, 0); | |
152 | dprintk("NFS reply lookup: %d\n", status); | |
153 | if (status >= 0) | |
154 | status = nfs_refresh_inode(dir, &dir_attr); | |
155 | return status; | |
156 | } | |
157 | ||
158 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
159 | { | |
160 | struct nfs_fattr fattr; | |
161 | struct nfs3_accessargs arg = { | |
162 | .fh = NFS_FH(inode), | |
163 | }; | |
164 | struct nfs3_accessres res = { | |
165 | .fattr = &fattr, | |
166 | }; | |
167 | struct rpc_message msg = { | |
168 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
169 | .rpc_argp = &arg, | |
170 | .rpc_resp = &res, | |
171 | .rpc_cred = entry->cred | |
172 | }; | |
173 | int mode = entry->mask; | |
174 | int status; | |
175 | ||
176 | dprintk("NFS call access\n"); | |
177 | fattr.valid = 0; | |
178 | ||
179 | if (mode & MAY_READ) | |
180 | arg.access |= NFS3_ACCESS_READ; | |
181 | if (S_ISDIR(inode->i_mode)) { | |
182 | if (mode & MAY_WRITE) | |
183 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
184 | if (mode & MAY_EXEC) | |
185 | arg.access |= NFS3_ACCESS_LOOKUP; | |
186 | } else { | |
187 | if (mode & MAY_WRITE) | |
188 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
189 | if (mode & MAY_EXEC) | |
190 | arg.access |= NFS3_ACCESS_EXECUTE; | |
191 | } | |
192 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
193 | nfs_refresh_inode(inode, &fattr); | |
194 | if (status == 0) { | |
195 | entry->mask = 0; | |
196 | if (res.access & NFS3_ACCESS_READ) | |
197 | entry->mask |= MAY_READ; | |
198 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
199 | entry->mask |= MAY_WRITE; | |
200 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
201 | entry->mask |= MAY_EXEC; | |
202 | } | |
203 | dprintk("NFS reply access: %d\n", status); | |
204 | return status; | |
205 | } | |
206 | ||
207 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
208 | unsigned int pgbase, unsigned int pglen) | |
209 | { | |
210 | struct nfs_fattr fattr; | |
211 | struct nfs3_readlinkargs args = { | |
212 | .fh = NFS_FH(inode), | |
213 | .pgbase = pgbase, | |
214 | .pglen = pglen, | |
215 | .pages = &page | |
216 | }; | |
217 | int status; | |
218 | ||
219 | dprintk("NFS call readlink\n"); | |
220 | fattr.valid = 0; | |
221 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK, | |
222 | &args, &fattr, 0); | |
223 | nfs_refresh_inode(inode, &fattr); | |
224 | dprintk("NFS reply readlink: %d\n", status); | |
225 | return status; | |
226 | } | |
227 | ||
228 | static int nfs3_proc_read(struct nfs_read_data *rdata) | |
229 | { | |
230 | int flags = rdata->flags; | |
231 | struct inode * inode = rdata->inode; | |
232 | struct nfs_fattr * fattr = rdata->res.fattr; | |
233 | struct rpc_message msg = { | |
234 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
235 | .rpc_argp = &rdata->args, | |
236 | .rpc_resp = &rdata->res, | |
237 | .rpc_cred = rdata->cred, | |
238 | }; | |
239 | int status; | |
240 | ||
241 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | |
242 | (long long) rdata->args.offset); | |
243 | fattr->valid = 0; | |
244 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); | |
245 | if (status >= 0) | |
246 | nfs_refresh_inode(inode, fattr); | |
247 | dprintk("NFS reply read: %d\n", status); | |
248 | return status; | |
249 | } | |
250 | ||
251 | static int nfs3_proc_write(struct nfs_write_data *wdata) | |
252 | { | |
253 | int rpcflags = wdata->flags; | |
254 | struct inode * inode = wdata->inode; | |
255 | struct nfs_fattr * fattr = wdata->res.fattr; | |
256 | struct rpc_message msg = { | |
257 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
258 | .rpc_argp = &wdata->args, | |
259 | .rpc_resp = &wdata->res, | |
260 | .rpc_cred = wdata->cred, | |
261 | }; | |
262 | int status; | |
263 | ||
264 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | |
265 | (long long) wdata->args.offset); | |
266 | fattr->valid = 0; | |
267 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); | |
268 | if (status >= 0) | |
269 | nfs_refresh_inode(inode, fattr); | |
270 | dprintk("NFS reply write: %d\n", status); | |
271 | return status < 0? status : wdata->res.count; | |
272 | } | |
273 | ||
274 | static int nfs3_proc_commit(struct nfs_write_data *cdata) | |
275 | { | |
276 | struct inode * inode = cdata->inode; | |
277 | struct nfs_fattr * fattr = cdata->res.fattr; | |
278 | struct rpc_message msg = { | |
279 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
280 | .rpc_argp = &cdata->args, | |
281 | .rpc_resp = &cdata->res, | |
282 | .rpc_cred = cdata->cred, | |
283 | }; | |
284 | int status; | |
285 | ||
286 | dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, | |
287 | (long long) cdata->args.offset); | |
288 | fattr->valid = 0; | |
289 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); | |
290 | if (status >= 0) | |
291 | nfs_refresh_inode(inode, fattr); | |
292 | dprintk("NFS reply commit: %d\n", status); | |
293 | return status; | |
294 | } | |
295 | ||
296 | /* | |
297 | * Create a regular file. | |
298 | * For now, we don't implement O_EXCL. | |
299 | */ | |
300 | static int | |
301 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 302 | int flags, struct nameidata *nd) |
1da177e4 LT |
303 | { |
304 | struct nfs_fh fhandle; | |
305 | struct nfs_fattr fattr; | |
306 | struct nfs_fattr dir_attr; | |
307 | struct nfs3_createargs arg = { | |
308 | .fh = NFS_FH(dir), | |
309 | .name = dentry->d_name.name, | |
310 | .len = dentry->d_name.len, | |
311 | .sattr = sattr, | |
312 | }; | |
313 | struct nfs3_diropres res = { | |
314 | .dir_attr = &dir_attr, | |
315 | .fh = &fhandle, | |
316 | .fattr = &fattr | |
317 | }; | |
055ffbea AG |
318 | mode_t mode = sattr->ia_mode; |
319 | int status; | |
1da177e4 LT |
320 | |
321 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
322 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
323 | if (flags & O_EXCL) { | |
324 | arg.createmode = NFS3_CREATE_EXCLUSIVE; | |
325 | arg.verifier[0] = jiffies; | |
326 | arg.verifier[1] = current->pid; | |
327 | } | |
328 | ||
055ffbea AG |
329 | sattr->ia_mode &= ~current->fs->umask; |
330 | ||
1da177e4 LT |
331 | again: |
332 | dir_attr.valid = 0; | |
333 | fattr.valid = 0; | |
334 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0); | |
335 | nfs_refresh_inode(dir, &dir_attr); | |
336 | ||
337 | /* If the server doesn't support the exclusive creation semantics, | |
338 | * try again with simple 'guarded' mode. */ | |
339 | if (status == NFSERR_NOTSUPP) { | |
340 | switch (arg.createmode) { | |
341 | case NFS3_CREATE_EXCLUSIVE: | |
342 | arg.createmode = NFS3_CREATE_GUARDED; | |
343 | break; | |
344 | ||
345 | case NFS3_CREATE_GUARDED: | |
346 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
347 | break; | |
348 | ||
349 | case NFS3_CREATE_UNCHECKED: | |
350 | goto out; | |
351 | } | |
352 | goto again; | |
353 | } | |
354 | ||
355 | if (status == 0) | |
356 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
357 | if (status != 0) | |
358 | goto out; | |
359 | ||
360 | /* When we created the file with exclusive semantics, make | |
361 | * sure we set the attributes afterwards. */ | |
362 | if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { | |
363 | dprintk("NFS call setattr (post-create)\n"); | |
364 | ||
365 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
366 | sattr->ia_valid |= ATTR_ATIME; | |
367 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
368 | sattr->ia_valid |= ATTR_MTIME; | |
369 | ||
370 | /* Note: we could use a guarded setattr here, but I'm | |
371 | * not sure this buys us anything (and I'd have | |
372 | * to revamp the NFSv3 XDR code) */ | |
373 | status = nfs3_proc_setattr(dentry, &fattr, sattr); | |
65e4308d TM |
374 | if (status == 0) |
375 | nfs_setattr_update_inode(dentry->d_inode, sattr); | |
1da177e4 LT |
376 | nfs_refresh_inode(dentry->d_inode, &fattr); |
377 | dprintk("NFS reply setattr (post-create): %d\n", status); | |
378 | } | |
055ffbea AG |
379 | if (status != 0) |
380 | goto out; | |
381 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
1da177e4 LT |
382 | out: |
383 | dprintk("NFS reply create: %d\n", status); | |
384 | return status; | |
385 | } | |
386 | ||
387 | static int | |
388 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
389 | { | |
390 | struct nfs_fattr dir_attr; | |
391 | struct nfs3_diropargs arg = { | |
392 | .fh = NFS_FH(dir), | |
393 | .name = name->name, | |
394 | .len = name->len | |
395 | }; | |
396 | struct rpc_message msg = { | |
397 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
398 | .rpc_argp = &arg, | |
399 | .rpc_resp = &dir_attr, | |
400 | }; | |
401 | int status; | |
402 | ||
403 | dprintk("NFS call remove %s\n", name->name); | |
404 | dir_attr.valid = 0; | |
405 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
406 | nfs_refresh_inode(dir, &dir_attr); | |
407 | dprintk("NFS reply remove: %d\n", status); | |
408 | return status; | |
409 | } | |
410 | ||
411 | static int | |
412 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | |
413 | { | |
414 | struct unlinkxdr { | |
415 | struct nfs3_diropargs arg; | |
416 | struct nfs_fattr res; | |
417 | } *ptr; | |
418 | ||
419 | ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); | |
420 | if (!ptr) | |
421 | return -ENOMEM; | |
422 | ptr->arg.fh = NFS_FH(dir->d_inode); | |
423 | ptr->arg.name = name->name; | |
424 | ptr->arg.len = name->len; | |
425 | ptr->res.valid = 0; | |
426 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; | |
427 | msg->rpc_argp = &ptr->arg; | |
428 | msg->rpc_resp = &ptr->res; | |
429 | return 0; | |
430 | } | |
431 | ||
432 | static int | |
433 | nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
434 | { | |
435 | struct rpc_message *msg = &task->tk_msg; | |
436 | struct nfs_fattr *dir_attr; | |
437 | ||
438 | if (nfs3_async_handle_jukebox(task)) | |
439 | return 1; | |
440 | if (msg->rpc_argp) { | |
441 | dir_attr = (struct nfs_fattr*)msg->rpc_resp; | |
442 | nfs_refresh_inode(dir->d_inode, dir_attr); | |
443 | kfree(msg->rpc_argp); | |
444 | } | |
445 | return 0; | |
446 | } | |
447 | ||
448 | static int | |
449 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
450 | struct inode *new_dir, struct qstr *new_name) | |
451 | { | |
452 | struct nfs_fattr old_dir_attr, new_dir_attr; | |
453 | struct nfs3_renameargs arg = { | |
454 | .fromfh = NFS_FH(old_dir), | |
455 | .fromname = old_name->name, | |
456 | .fromlen = old_name->len, | |
457 | .tofh = NFS_FH(new_dir), | |
458 | .toname = new_name->name, | |
459 | .tolen = new_name->len | |
460 | }; | |
461 | struct nfs3_renameres res = { | |
462 | .fromattr = &old_dir_attr, | |
463 | .toattr = &new_dir_attr | |
464 | }; | |
465 | int status; | |
466 | ||
467 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
468 | old_dir_attr.valid = 0; | |
469 | new_dir_attr.valid = 0; | |
470 | status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0); | |
471 | nfs_refresh_inode(old_dir, &old_dir_attr); | |
472 | nfs_refresh_inode(new_dir, &new_dir_attr); | |
473 | dprintk("NFS reply rename: %d\n", status); | |
474 | return status; | |
475 | } | |
476 | ||
477 | static int | |
478 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
479 | { | |
480 | struct nfs_fattr dir_attr, fattr; | |
481 | struct nfs3_linkargs arg = { | |
482 | .fromfh = NFS_FH(inode), | |
483 | .tofh = NFS_FH(dir), | |
484 | .toname = name->name, | |
485 | .tolen = name->len | |
486 | }; | |
487 | struct nfs3_linkres res = { | |
488 | .dir_attr = &dir_attr, | |
489 | .fattr = &fattr | |
490 | }; | |
491 | int status; | |
492 | ||
493 | dprintk("NFS call link %s\n", name->name); | |
494 | dir_attr.valid = 0; | |
495 | fattr.valid = 0; | |
496 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0); | |
497 | nfs_refresh_inode(dir, &dir_attr); | |
498 | nfs_refresh_inode(inode, &fattr); | |
499 | dprintk("NFS reply link: %d\n", status); | |
500 | return status; | |
501 | } | |
502 | ||
503 | static int | |
504 | nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | |
505 | struct iattr *sattr, struct nfs_fh *fhandle, | |
506 | struct nfs_fattr *fattr) | |
507 | { | |
508 | struct nfs_fattr dir_attr; | |
509 | struct nfs3_symlinkargs arg = { | |
510 | .fromfh = NFS_FH(dir), | |
511 | .fromname = name->name, | |
512 | .fromlen = name->len, | |
513 | .topath = path->name, | |
514 | .tolen = path->len, | |
515 | .sattr = sattr | |
516 | }; | |
517 | struct nfs3_diropres res = { | |
518 | .dir_attr = &dir_attr, | |
519 | .fh = fhandle, | |
520 | .fattr = fattr | |
521 | }; | |
522 | int status; | |
523 | ||
524 | if (path->len > NFS3_MAXPATHLEN) | |
525 | return -ENAMETOOLONG; | |
526 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | |
527 | dir_attr.valid = 0; | |
528 | fattr->valid = 0; | |
529 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0); | |
530 | nfs_refresh_inode(dir, &dir_attr); | |
531 | dprintk("NFS reply symlink: %d\n", status); | |
532 | return status; | |
533 | } | |
534 | ||
535 | static int | |
536 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
537 | { | |
538 | struct nfs_fh fhandle; | |
539 | struct nfs_fattr fattr, dir_attr; | |
540 | struct nfs3_mkdirargs arg = { | |
541 | .fh = NFS_FH(dir), | |
542 | .name = dentry->d_name.name, | |
543 | .len = dentry->d_name.len, | |
544 | .sattr = sattr | |
545 | }; | |
546 | struct nfs3_diropres res = { | |
547 | .dir_attr = &dir_attr, | |
548 | .fh = &fhandle, | |
549 | .fattr = &fattr | |
550 | }; | |
055ffbea AG |
551 | int mode = sattr->ia_mode; |
552 | int status; | |
1da177e4 LT |
553 | |
554 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
555 | dir_attr.valid = 0; | |
556 | fattr.valid = 0; | |
055ffbea AG |
557 | |
558 | sattr->ia_mode &= ~current->fs->umask; | |
559 | ||
1da177e4 LT |
560 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0); |
561 | nfs_refresh_inode(dir, &dir_attr); | |
055ffbea AG |
562 | if (status != 0) |
563 | goto out; | |
564 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
565 | if (status != 0) | |
566 | goto out; | |
567 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
568 | out: | |
1da177e4 LT |
569 | dprintk("NFS reply mkdir: %d\n", status); |
570 | return status; | |
571 | } | |
572 | ||
573 | static int | |
574 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
575 | { | |
576 | struct nfs_fattr dir_attr; | |
577 | struct nfs3_diropargs arg = { | |
578 | .fh = NFS_FH(dir), | |
579 | .name = name->name, | |
580 | .len = name->len | |
581 | }; | |
582 | int status; | |
583 | ||
584 | dprintk("NFS call rmdir %s\n", name->name); | |
585 | dir_attr.valid = 0; | |
586 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0); | |
587 | nfs_refresh_inode(dir, &dir_attr); | |
588 | dprintk("NFS reply rmdir: %d\n", status); | |
589 | return status; | |
590 | } | |
591 | ||
592 | /* | |
593 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
594 | * to the encode function, which installs it in the receive iovec. | |
595 | * The decode function itself doesn't perform any decoding, it just makes | |
596 | * sure the reply is syntactically correct. | |
597 | * | |
598 | * Also note that this implementation handles both plain readdir and | |
599 | * readdirplus. | |
600 | */ | |
601 | static int | |
602 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
603 | u64 cookie, struct page *page, unsigned int count, int plus) | |
604 | { | |
605 | struct inode *dir = dentry->d_inode; | |
606 | struct nfs_fattr dir_attr; | |
607 | u32 *verf = NFS_COOKIEVERF(dir); | |
608 | struct nfs3_readdirargs arg = { | |
609 | .fh = NFS_FH(dir), | |
610 | .cookie = cookie, | |
611 | .verf = {verf[0], verf[1]}, | |
612 | .plus = plus, | |
613 | .count = count, | |
614 | .pages = &page | |
615 | }; | |
616 | struct nfs3_readdirres res = { | |
617 | .dir_attr = &dir_attr, | |
618 | .verf = verf, | |
619 | .plus = plus | |
620 | }; | |
621 | struct rpc_message msg = { | |
622 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
623 | .rpc_argp = &arg, | |
624 | .rpc_resp = &res, | |
625 | .rpc_cred = cred | |
626 | }; | |
627 | int status; | |
628 | ||
629 | lock_kernel(); | |
630 | ||
631 | if (plus) | |
632 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
633 | ||
634 | dprintk("NFS call readdir%s %d\n", | |
635 | plus? "plus" : "", (unsigned int) cookie); | |
636 | ||
637 | dir_attr.valid = 0; | |
638 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
639 | nfs_refresh_inode(dir, &dir_attr); | |
640 | dprintk("NFS reply readdir: %d\n", status); | |
641 | unlock_kernel(); | |
642 | return status; | |
643 | } | |
644 | ||
645 | static int | |
646 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
647 | dev_t rdev) | |
648 | { | |
649 | struct nfs_fh fh; | |
650 | struct nfs_fattr fattr, dir_attr; | |
651 | struct nfs3_mknodargs arg = { | |
652 | .fh = NFS_FH(dir), | |
653 | .name = dentry->d_name.name, | |
654 | .len = dentry->d_name.len, | |
655 | .sattr = sattr, | |
656 | .rdev = rdev | |
657 | }; | |
658 | struct nfs3_diropres res = { | |
659 | .dir_attr = &dir_attr, | |
660 | .fh = &fh, | |
661 | .fattr = &fattr | |
662 | }; | |
055ffbea | 663 | mode_t mode = sattr->ia_mode; |
1da177e4 LT |
664 | int status; |
665 | ||
666 | switch (sattr->ia_mode & S_IFMT) { | |
667 | case S_IFBLK: arg.type = NF3BLK; break; | |
668 | case S_IFCHR: arg.type = NF3CHR; break; | |
669 | case S_IFIFO: arg.type = NF3FIFO; break; | |
670 | case S_IFSOCK: arg.type = NF3SOCK; break; | |
671 | default: return -EINVAL; | |
672 | } | |
673 | ||
674 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
675 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea AG |
676 | |
677 | sattr->ia_mode &= ~current->fs->umask; | |
678 | ||
1da177e4 LT |
679 | dir_attr.valid = 0; |
680 | fattr.valid = 0; | |
681 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0); | |
682 | nfs_refresh_inode(dir, &dir_attr); | |
055ffbea AG |
683 | if (status != 0) |
684 | goto out; | |
685 | status = nfs_instantiate(dentry, &fh, &fattr); | |
686 | if (status != 0) | |
687 | goto out; | |
688 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
689 | out: | |
1da177e4 LT |
690 | dprintk("NFS reply mknod: %d\n", status); |
691 | return status; | |
692 | } | |
693 | ||
694 | static int | |
695 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
696 | struct nfs_fsstat *stat) | |
697 | { | |
698 | int status; | |
699 | ||
700 | dprintk("NFS call fsstat\n"); | |
701 | stat->fattr->valid = 0; | |
702 | status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0); | |
703 | dprintk("NFS reply statfs: %d\n", status); | |
704 | return status; | |
705 | } | |
706 | ||
707 | static int | |
708 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
709 | struct nfs_fsinfo *info) | |
710 | { | |
711 | int status; | |
712 | ||
713 | dprintk("NFS call fsinfo\n"); | |
714 | info->fattr->valid = 0; | |
715 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); | |
716 | dprintk("NFS reply fsinfo: %d\n", status); | |
717 | return status; | |
718 | } | |
719 | ||
720 | static int | |
721 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
722 | struct nfs_pathconf *info) | |
723 | { | |
724 | int status; | |
725 | ||
726 | dprintk("NFS call pathconf\n"); | |
727 | info->fattr->valid = 0; | |
728 | status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0); | |
729 | dprintk("NFS reply pathconf: %d\n", status); | |
730 | return status; | |
731 | } | |
732 | ||
733 | extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); | |
734 | ||
735 | static void | |
736 | nfs3_read_done(struct rpc_task *task) | |
737 | { | |
34123da6 | 738 | struct nfs_read_data *data = (struct nfs_read_data *) task->tk_calldata; |
1da177e4 LT |
739 | |
740 | if (nfs3_async_handle_jukebox(task)) | |
741 | return; | |
742 | /* Call back common NFS readpage processing */ | |
743 | if (task->tk_status >= 0) | |
744 | nfs_refresh_inode(data->inode, &data->fattr); | |
745 | nfs_readpage_result(task); | |
746 | } | |
747 | ||
748 | static void | |
749 | nfs3_proc_read_setup(struct nfs_read_data *data) | |
750 | { | |
751 | struct rpc_task *task = &data->task; | |
752 | struct inode *inode = data->inode; | |
753 | int flags; | |
754 | struct rpc_message msg = { | |
755 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
756 | .rpc_argp = &data->args, | |
757 | .rpc_resp = &data->res, | |
758 | .rpc_cred = data->cred, | |
759 | }; | |
760 | ||
761 | /* N.B. Do we need to test? Never called for swapfile inode */ | |
762 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | |
763 | ||
764 | /* Finalize the task. */ | |
765 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_read_done, flags); | |
766 | rpc_call_setup(task, &msg, 0); | |
767 | } | |
768 | ||
769 | static void | |
770 | nfs3_write_done(struct rpc_task *task) | |
771 | { | |
772 | struct nfs_write_data *data; | |
773 | ||
774 | if (nfs3_async_handle_jukebox(task)) | |
775 | return; | |
776 | data = (struct nfs_write_data *)task->tk_calldata; | |
777 | if (task->tk_status >= 0) | |
778 | nfs_refresh_inode(data->inode, data->res.fattr); | |
779 | nfs_writeback_done(task); | |
780 | } | |
781 | ||
782 | static void | |
783 | nfs3_proc_write_setup(struct nfs_write_data *data, int how) | |
784 | { | |
785 | struct rpc_task *task = &data->task; | |
786 | struct inode *inode = data->inode; | |
787 | int stable; | |
788 | int flags; | |
789 | struct rpc_message msg = { | |
790 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
791 | .rpc_argp = &data->args, | |
792 | .rpc_resp = &data->res, | |
793 | .rpc_cred = data->cred, | |
794 | }; | |
795 | ||
796 | if (how & FLUSH_STABLE) { | |
797 | if (!NFS_I(inode)->ncommit) | |
798 | stable = NFS_FILE_SYNC; | |
799 | else | |
800 | stable = NFS_DATA_SYNC; | |
801 | } else | |
802 | stable = NFS_UNSTABLE; | |
803 | data->args.stable = stable; | |
804 | ||
805 | /* Set the initial flags for the task. */ | |
806 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
807 | ||
808 | /* Finalize the task. */ | |
809 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_write_done, flags); | |
810 | rpc_call_setup(task, &msg, 0); | |
811 | } | |
812 | ||
813 | static void | |
814 | nfs3_commit_done(struct rpc_task *task) | |
815 | { | |
816 | struct nfs_write_data *data; | |
817 | ||
818 | if (nfs3_async_handle_jukebox(task)) | |
819 | return; | |
820 | data = (struct nfs_write_data *)task->tk_calldata; | |
821 | if (task->tk_status >= 0) | |
822 | nfs_refresh_inode(data->inode, data->res.fattr); | |
823 | nfs_commit_done(task); | |
824 | } | |
825 | ||
826 | static void | |
827 | nfs3_proc_commit_setup(struct nfs_write_data *data, int how) | |
828 | { | |
829 | struct rpc_task *task = &data->task; | |
830 | struct inode *inode = data->inode; | |
831 | int flags; | |
832 | struct rpc_message msg = { | |
833 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
834 | .rpc_argp = &data->args, | |
835 | .rpc_resp = &data->res, | |
836 | .rpc_cred = data->cred, | |
837 | }; | |
838 | ||
839 | /* Set the initial flags for the task. */ | |
840 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
841 | ||
842 | /* Finalize the task. */ | |
843 | rpc_init_task(task, NFS_CLIENT(inode), nfs3_commit_done, flags); | |
844 | rpc_call_setup(task, &msg, 0); | |
845 | } | |
846 | ||
847 | static int | |
848 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
849 | { | |
850 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | |
851 | } | |
852 | ||
853 | struct nfs_rpc_ops nfs_v3_clientops = { | |
854 | .version = 3, /* protocol version */ | |
855 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
856 | .dir_inode_ops = &nfs3_dir_inode_operations, |
857 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
858 | .getroot = nfs3_proc_get_root, |
859 | .getattr = nfs3_proc_getattr, | |
860 | .setattr = nfs3_proc_setattr, | |
861 | .lookup = nfs3_proc_lookup, | |
862 | .access = nfs3_proc_access, | |
863 | .readlink = nfs3_proc_readlink, | |
864 | .read = nfs3_proc_read, | |
865 | .write = nfs3_proc_write, | |
866 | .commit = nfs3_proc_commit, | |
867 | .create = nfs3_proc_create, | |
868 | .remove = nfs3_proc_remove, | |
869 | .unlink_setup = nfs3_proc_unlink_setup, | |
870 | .unlink_done = nfs3_proc_unlink_done, | |
871 | .rename = nfs3_proc_rename, | |
872 | .link = nfs3_proc_link, | |
873 | .symlink = nfs3_proc_symlink, | |
874 | .mkdir = nfs3_proc_mkdir, | |
875 | .rmdir = nfs3_proc_rmdir, | |
876 | .readdir = nfs3_proc_readdir, | |
877 | .mknod = nfs3_proc_mknod, | |
878 | .statfs = nfs3_proc_statfs, | |
879 | .fsinfo = nfs3_proc_fsinfo, | |
880 | .pathconf = nfs3_proc_pathconf, | |
881 | .decode_dirent = nfs3_decode_dirent, | |
882 | .read_setup = nfs3_proc_read_setup, | |
883 | .write_setup = nfs3_proc_write_setup, | |
884 | .commit_setup = nfs3_proc_commit_setup, | |
885 | .file_open = nfs_open, | |
886 | .file_release = nfs_release, | |
887 | .lock = nfs3_proc_lock, | |
5c6a9f7d | 888 | .clear_acl_cache = nfs3_forget_cached_acls, |
1da177e4 | 889 | }; |