Commit | Line | Data |
---|---|---|
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 | 21 | |
006ea73e CL |
22 | #include "iostat.h" |
23 | ||
1da177e4 LT |
24 | #define NFSDBG_FACILITY NFSDBG_PROC |
25 | ||
26 | extern struct rpc_procinfo nfs3_procedures[]; | |
27 | ||
28 | /* A wrapper to handle the EJUKEBOX error message */ | |
29 | static int | |
30 | nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) | |
31 | { | |
32 | sigset_t oldset; | |
33 | int res; | |
34 | rpc_clnt_sigmask(clnt, &oldset); | |
35 | do { | |
36 | res = rpc_call_sync(clnt, msg, flags); | |
37 | if (res != -EJUKEBOX) | |
38 | break; | |
041e0e3b | 39 | schedule_timeout_interruptible(NFS_JUKEBOX_RETRY_TIME); |
1da177e4 LT |
40 | res = -ERESTARTSYS; |
41 | } while (!signalled()); | |
42 | rpc_clnt_sigunmask(clnt, &oldset); | |
43 | return res; | |
44 | } | |
45 | ||
dead28da | 46 | #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags) |
1da177e4 LT |
47 | |
48 | static int | |
006ea73e | 49 | nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode) |
1da177e4 LT |
50 | { |
51 | if (task->tk_status != -EJUKEBOX) | |
52 | return 0; | |
006ea73e | 53 | nfs_inc_stats(inode, NFSIOS_DELAY); |
1da177e4 LT |
54 | task->tk_status = 0; |
55 | rpc_restart_call(task); | |
56 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
57 | return 1; | |
58 | } | |
59 | ||
1da177e4 | 60 | static int |
03c21733 BF |
61 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
62 | struct nfs_fsinfo *info) | |
1da177e4 | 63 | { |
dead28da CL |
64 | struct rpc_message msg = { |
65 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
66 | .rpc_argp = fhandle, | |
67 | .rpc_resp = info, | |
68 | }; | |
1da177e4 LT |
69 | int status; |
70 | ||
71 | dprintk("%s: call fsinfo\n", __FUNCTION__); | |
0e574af1 | 72 | nfs_fattr_init(info->fattr); |
dead28da | 73 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
74 | dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); |
75 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { | |
dead28da CL |
76 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; |
77 | msg.rpc_resp = info->fattr; | |
78 | status = rpc_call_sync(client, &msg, 0); | |
1da177e4 LT |
79 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); |
80 | } | |
81 | return status; | |
82 | } | |
83 | ||
03c21733 BF |
84 | /* |
85 | * Bare-bones access to getattr: this is for nfs_read_super. | |
86 | */ | |
87 | static int | |
88 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
89 | struct nfs_fsinfo *info) | |
90 | { | |
91 | int status; | |
92 | ||
93 | status = do_proc_get_root(server->client, fhandle, info); | |
94 | if (status && server->client_sys != server->client) | |
95 | status = do_proc_get_root(server->client_sys, fhandle, info); | |
96 | return status; | |
97 | } | |
98 | ||
1da177e4 LT |
99 | /* |
100 | * One function for each procedure in the NFS protocol. | |
101 | */ | |
102 | static int | |
103 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
104 | struct nfs_fattr *fattr) | |
105 | { | |
dead28da CL |
106 | struct rpc_message msg = { |
107 | .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], | |
108 | .rpc_argp = fhandle, | |
109 | .rpc_resp = fattr, | |
110 | }; | |
1da177e4 LT |
111 | int status; |
112 | ||
113 | dprintk("NFS call getattr\n"); | |
0e574af1 | 114 | nfs_fattr_init(fattr); |
dead28da | 115 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
116 | dprintk("NFS reply getattr: %d\n", status); |
117 | return status; | |
118 | } | |
119 | ||
120 | static int | |
121 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
122 | struct iattr *sattr) | |
123 | { | |
124 | struct inode *inode = dentry->d_inode; | |
125 | struct nfs3_sattrargs arg = { | |
126 | .fh = NFS_FH(inode), | |
127 | .sattr = sattr, | |
128 | }; | |
dead28da CL |
129 | struct rpc_message msg = { |
130 | .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], | |
131 | .rpc_argp = &arg, | |
132 | .rpc_resp = fattr, | |
133 | }; | |
1da177e4 LT |
134 | int status; |
135 | ||
136 | dprintk("NFS call setattr\n"); | |
0e574af1 | 137 | nfs_fattr_init(fattr); |
dead28da | 138 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
65e4308d TM |
139 | if (status == 0) |
140 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
141 | dprintk("NFS reply setattr: %d\n", status); |
142 | return status; | |
143 | } | |
144 | ||
145 | static int | |
146 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
147 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
148 | { | |
149 | struct nfs_fattr dir_attr; | |
150 | struct nfs3_diropargs arg = { | |
151 | .fh = NFS_FH(dir), | |
152 | .name = name->name, | |
153 | .len = name->len | |
154 | }; | |
155 | struct nfs3_diropres res = { | |
156 | .dir_attr = &dir_attr, | |
157 | .fh = fhandle, | |
158 | .fattr = fattr | |
159 | }; | |
dead28da CL |
160 | struct rpc_message msg = { |
161 | .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP], | |
162 | .rpc_argp = &arg, | |
163 | .rpc_resp = &res, | |
164 | }; | |
1da177e4 LT |
165 | int status; |
166 | ||
167 | dprintk("NFS call lookup %s\n", name->name); | |
0e574af1 TM |
168 | nfs_fattr_init(&dir_attr); |
169 | nfs_fattr_init(fattr); | |
dead28da CL |
170 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
171 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { | |
172 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; | |
173 | msg.rpc_argp = fhandle; | |
174 | msg.rpc_resp = fattr; | |
175 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
176 | } | |
1da177e4 LT |
177 | dprintk("NFS reply lookup: %d\n", status); |
178 | if (status >= 0) | |
179 | status = nfs_refresh_inode(dir, &dir_attr); | |
180 | return status; | |
181 | } | |
182 | ||
183 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
184 | { | |
185 | struct nfs_fattr fattr; | |
186 | struct nfs3_accessargs arg = { | |
187 | .fh = NFS_FH(inode), | |
188 | }; | |
189 | struct nfs3_accessres res = { | |
190 | .fattr = &fattr, | |
191 | }; | |
192 | struct rpc_message msg = { | |
193 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
194 | .rpc_argp = &arg, | |
195 | .rpc_resp = &res, | |
dead28da | 196 | .rpc_cred = entry->cred, |
1da177e4 LT |
197 | }; |
198 | int mode = entry->mask; | |
199 | int status; | |
200 | ||
201 | dprintk("NFS call access\n"); | |
1da177e4 LT |
202 | |
203 | if (mode & MAY_READ) | |
204 | arg.access |= NFS3_ACCESS_READ; | |
205 | if (S_ISDIR(inode->i_mode)) { | |
206 | if (mode & MAY_WRITE) | |
207 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
208 | if (mode & MAY_EXEC) | |
209 | arg.access |= NFS3_ACCESS_LOOKUP; | |
210 | } else { | |
211 | if (mode & MAY_WRITE) | |
212 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
213 | if (mode & MAY_EXEC) | |
214 | arg.access |= NFS3_ACCESS_EXECUTE; | |
215 | } | |
0e574af1 | 216 | nfs_fattr_init(&fattr); |
1da177e4 LT |
217 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
218 | nfs_refresh_inode(inode, &fattr); | |
219 | if (status == 0) { | |
220 | entry->mask = 0; | |
221 | if (res.access & NFS3_ACCESS_READ) | |
222 | entry->mask |= MAY_READ; | |
223 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
224 | entry->mask |= MAY_WRITE; | |
225 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
226 | entry->mask |= MAY_EXEC; | |
227 | } | |
228 | dprintk("NFS reply access: %d\n", status); | |
229 | return status; | |
230 | } | |
231 | ||
232 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
233 | unsigned int pgbase, unsigned int pglen) | |
234 | { | |
235 | struct nfs_fattr fattr; | |
236 | struct nfs3_readlinkargs args = { | |
237 | .fh = NFS_FH(inode), | |
238 | .pgbase = pgbase, | |
239 | .pglen = pglen, | |
240 | .pages = &page | |
241 | }; | |
dead28da CL |
242 | struct rpc_message msg = { |
243 | .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK], | |
244 | .rpc_argp = &args, | |
245 | .rpc_resp = &fattr, | |
246 | }; | |
1da177e4 LT |
247 | int status; |
248 | ||
249 | dprintk("NFS call readlink\n"); | |
0e574af1 | 250 | nfs_fattr_init(&fattr); |
dead28da | 251 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1da177e4 LT |
252 | nfs_refresh_inode(inode, &fattr); |
253 | dprintk("NFS reply readlink: %d\n", status); | |
254 | return status; | |
255 | } | |
256 | ||
257 | static int nfs3_proc_read(struct nfs_read_data *rdata) | |
258 | { | |
259 | int flags = rdata->flags; | |
260 | struct inode * inode = rdata->inode; | |
261 | struct nfs_fattr * fattr = rdata->res.fattr; | |
262 | struct rpc_message msg = { | |
263 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
264 | .rpc_argp = &rdata->args, | |
265 | .rpc_resp = &rdata->res, | |
266 | .rpc_cred = rdata->cred, | |
267 | }; | |
268 | int status; | |
269 | ||
270 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | |
271 | (long long) rdata->args.offset); | |
0e574af1 | 272 | nfs_fattr_init(fattr); |
1da177e4 LT |
273 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); |
274 | if (status >= 0) | |
275 | nfs_refresh_inode(inode, fattr); | |
276 | dprintk("NFS reply read: %d\n", status); | |
277 | return status; | |
278 | } | |
279 | ||
280 | static int nfs3_proc_write(struct nfs_write_data *wdata) | |
281 | { | |
282 | int rpcflags = wdata->flags; | |
283 | struct inode * inode = wdata->inode; | |
284 | struct nfs_fattr * fattr = wdata->res.fattr; | |
285 | struct rpc_message msg = { | |
286 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
287 | .rpc_argp = &wdata->args, | |
288 | .rpc_resp = &wdata->res, | |
289 | .rpc_cred = wdata->cred, | |
290 | }; | |
291 | int status; | |
292 | ||
293 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | |
294 | (long long) wdata->args.offset); | |
0e574af1 | 295 | nfs_fattr_init(fattr); |
1da177e4 LT |
296 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); |
297 | if (status >= 0) | |
decf491f | 298 | nfs_post_op_update_inode(inode, fattr); |
1da177e4 LT |
299 | dprintk("NFS reply write: %d\n", status); |
300 | return status < 0? status : wdata->res.count; | |
301 | } | |
302 | ||
303 | static int nfs3_proc_commit(struct nfs_write_data *cdata) | |
304 | { | |
305 | struct inode * inode = cdata->inode; | |
306 | struct nfs_fattr * fattr = cdata->res.fattr; | |
307 | struct rpc_message msg = { | |
308 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
309 | .rpc_argp = &cdata->args, | |
310 | .rpc_resp = &cdata->res, | |
311 | .rpc_cred = cdata->cred, | |
312 | }; | |
313 | int status; | |
314 | ||
315 | dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, | |
316 | (long long) cdata->args.offset); | |
0e574af1 | 317 | nfs_fattr_init(fattr); |
1da177e4 LT |
318 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
319 | if (status >= 0) | |
decf491f | 320 | nfs_post_op_update_inode(inode, fattr); |
1da177e4 LT |
321 | dprintk("NFS reply commit: %d\n", status); |
322 | return status; | |
323 | } | |
324 | ||
325 | /* | |
326 | * Create a regular file. | |
327 | * For now, we don't implement O_EXCL. | |
328 | */ | |
329 | static int | |
330 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 331 | int flags, struct nameidata *nd) |
1da177e4 LT |
332 | { |
333 | struct nfs_fh fhandle; | |
334 | struct nfs_fattr fattr; | |
335 | struct nfs_fattr dir_attr; | |
336 | struct nfs3_createargs arg = { | |
337 | .fh = NFS_FH(dir), | |
338 | .name = dentry->d_name.name, | |
339 | .len = dentry->d_name.len, | |
340 | .sattr = sattr, | |
341 | }; | |
342 | struct nfs3_diropres res = { | |
343 | .dir_attr = &dir_attr, | |
344 | .fh = &fhandle, | |
345 | .fattr = &fattr | |
346 | }; | |
dead28da CL |
347 | struct rpc_message msg = { |
348 | .rpc_proc = &nfs3_procedures[NFS3PROC_CREATE], | |
349 | .rpc_argp = &arg, | |
350 | .rpc_resp = &res, | |
351 | }; | |
055ffbea AG |
352 | mode_t mode = sattr->ia_mode; |
353 | int status; | |
1da177e4 LT |
354 | |
355 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
356 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
357 | if (flags & O_EXCL) { | |
358 | arg.createmode = NFS3_CREATE_EXCLUSIVE; | |
359 | arg.verifier[0] = jiffies; | |
360 | arg.verifier[1] = current->pid; | |
361 | } | |
362 | ||
055ffbea AG |
363 | sattr->ia_mode &= ~current->fs->umask; |
364 | ||
1da177e4 | 365 | again: |
0e574af1 TM |
366 | nfs_fattr_init(&dir_attr); |
367 | nfs_fattr_init(&fattr); | |
dead28da CL |
368 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
369 | nfs_refresh_inode(dir, &dir_attr); | |
1da177e4 LT |
370 | |
371 | /* If the server doesn't support the exclusive creation semantics, | |
372 | * try again with simple 'guarded' mode. */ | |
373 | if (status == NFSERR_NOTSUPP) { | |
374 | switch (arg.createmode) { | |
375 | case NFS3_CREATE_EXCLUSIVE: | |
376 | arg.createmode = NFS3_CREATE_GUARDED; | |
377 | break; | |
378 | ||
379 | case NFS3_CREATE_GUARDED: | |
380 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
381 | break; | |
382 | ||
383 | case NFS3_CREATE_UNCHECKED: | |
384 | goto out; | |
385 | } | |
386 | goto again; | |
387 | } | |
388 | ||
389 | if (status == 0) | |
390 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
391 | if (status != 0) | |
392 | goto out; | |
393 | ||
394 | /* When we created the file with exclusive semantics, make | |
395 | * sure we set the attributes afterwards. */ | |
396 | if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { | |
397 | dprintk("NFS call setattr (post-create)\n"); | |
398 | ||
399 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
400 | sattr->ia_valid |= ATTR_ATIME; | |
401 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
402 | sattr->ia_valid |= ATTR_MTIME; | |
403 | ||
404 | /* Note: we could use a guarded setattr here, but I'm | |
405 | * not sure this buys us anything (and I'd have | |
406 | * to revamp the NFSv3 XDR code) */ | |
407 | status = nfs3_proc_setattr(dentry, &fattr, sattr); | |
65e4308d TM |
408 | if (status == 0) |
409 | nfs_setattr_update_inode(dentry->d_inode, sattr); | |
1da177e4 LT |
410 | nfs_refresh_inode(dentry->d_inode, &fattr); |
411 | dprintk("NFS reply setattr (post-create): %d\n", status); | |
412 | } | |
055ffbea AG |
413 | if (status != 0) |
414 | goto out; | |
415 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
1da177e4 LT |
416 | out: |
417 | dprintk("NFS reply create: %d\n", status); | |
418 | return status; | |
419 | } | |
420 | ||
421 | static int | |
422 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
423 | { | |
424 | struct nfs_fattr dir_attr; | |
425 | struct nfs3_diropargs arg = { | |
426 | .fh = NFS_FH(dir), | |
427 | .name = name->name, | |
428 | .len = name->len | |
429 | }; | |
430 | struct rpc_message msg = { | |
431 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
432 | .rpc_argp = &arg, | |
433 | .rpc_resp = &dir_attr, | |
434 | }; | |
435 | int status; | |
436 | ||
437 | dprintk("NFS call remove %s\n", name->name); | |
0e574af1 | 438 | nfs_fattr_init(&dir_attr); |
1da177e4 | 439 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 440 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
441 | dprintk("NFS reply remove: %d\n", status); |
442 | return status; | |
443 | } | |
444 | ||
445 | static int | |
446 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | |
447 | { | |
448 | struct unlinkxdr { | |
449 | struct nfs3_diropargs arg; | |
450 | struct nfs_fattr res; | |
451 | } *ptr; | |
452 | ||
453 | ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); | |
454 | if (!ptr) | |
455 | return -ENOMEM; | |
456 | ptr->arg.fh = NFS_FH(dir->d_inode); | |
457 | ptr->arg.name = name->name; | |
458 | ptr->arg.len = name->len; | |
0e574af1 | 459 | nfs_fattr_init(&ptr->res); |
1da177e4 LT |
460 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
461 | msg->rpc_argp = &ptr->arg; | |
462 | msg->rpc_resp = &ptr->res; | |
463 | return 0; | |
464 | } | |
465 | ||
466 | static int | |
467 | nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
468 | { | |
469 | struct rpc_message *msg = &task->tk_msg; | |
470 | struct nfs_fattr *dir_attr; | |
471 | ||
006ea73e | 472 | if (nfs3_async_handle_jukebox(task, dir->d_inode)) |
1da177e4 LT |
473 | return 1; |
474 | if (msg->rpc_argp) { | |
475 | dir_attr = (struct nfs_fattr*)msg->rpc_resp; | |
decf491f | 476 | nfs_post_op_update_inode(dir->d_inode, dir_attr); |
1da177e4 LT |
477 | kfree(msg->rpc_argp); |
478 | } | |
479 | return 0; | |
480 | } | |
481 | ||
482 | static int | |
483 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
484 | struct inode *new_dir, struct qstr *new_name) | |
485 | { | |
486 | struct nfs_fattr old_dir_attr, new_dir_attr; | |
487 | struct nfs3_renameargs arg = { | |
488 | .fromfh = NFS_FH(old_dir), | |
489 | .fromname = old_name->name, | |
490 | .fromlen = old_name->len, | |
491 | .tofh = NFS_FH(new_dir), | |
492 | .toname = new_name->name, | |
493 | .tolen = new_name->len | |
494 | }; | |
495 | struct nfs3_renameres res = { | |
496 | .fromattr = &old_dir_attr, | |
497 | .toattr = &new_dir_attr | |
498 | }; | |
dead28da CL |
499 | struct rpc_message msg = { |
500 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
501 | .rpc_argp = &arg, | |
502 | .rpc_resp = &res, | |
503 | }; | |
1da177e4 LT |
504 | int status; |
505 | ||
506 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
0e574af1 TM |
507 | nfs_fattr_init(&old_dir_attr); |
508 | nfs_fattr_init(&new_dir_attr); | |
dead28da | 509 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
decf491f TM |
510 | nfs_post_op_update_inode(old_dir, &old_dir_attr); |
511 | nfs_post_op_update_inode(new_dir, &new_dir_attr); | |
1da177e4 LT |
512 | dprintk("NFS reply rename: %d\n", status); |
513 | return status; | |
514 | } | |
515 | ||
516 | static int | |
517 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
518 | { | |
519 | struct nfs_fattr dir_attr, fattr; | |
520 | struct nfs3_linkargs arg = { | |
521 | .fromfh = NFS_FH(inode), | |
522 | .tofh = NFS_FH(dir), | |
523 | .toname = name->name, | |
524 | .tolen = name->len | |
525 | }; | |
526 | struct nfs3_linkres res = { | |
527 | .dir_attr = &dir_attr, | |
528 | .fattr = &fattr | |
529 | }; | |
dead28da CL |
530 | struct rpc_message msg = { |
531 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
532 | .rpc_argp = &arg, | |
533 | .rpc_resp = &res, | |
534 | }; | |
1da177e4 LT |
535 | int status; |
536 | ||
537 | dprintk("NFS call link %s\n", name->name); | |
0e574af1 TM |
538 | nfs_fattr_init(&dir_attr); |
539 | nfs_fattr_init(&fattr); | |
dead28da | 540 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
decf491f TM |
541 | nfs_post_op_update_inode(dir, &dir_attr); |
542 | nfs_post_op_update_inode(inode, &fattr); | |
1da177e4 LT |
543 | dprintk("NFS reply link: %d\n", status); |
544 | return status; | |
545 | } | |
546 | ||
547 | static int | |
548 | nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | |
549 | struct iattr *sattr, struct nfs_fh *fhandle, | |
550 | struct nfs_fattr *fattr) | |
551 | { | |
552 | struct nfs_fattr dir_attr; | |
553 | struct nfs3_symlinkargs arg = { | |
554 | .fromfh = NFS_FH(dir), | |
555 | .fromname = name->name, | |
556 | .fromlen = name->len, | |
557 | .topath = path->name, | |
558 | .tolen = path->len, | |
559 | .sattr = sattr | |
560 | }; | |
561 | struct nfs3_diropres res = { | |
562 | .dir_attr = &dir_attr, | |
563 | .fh = fhandle, | |
564 | .fattr = fattr | |
565 | }; | |
dead28da CL |
566 | struct rpc_message msg = { |
567 | .rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK], | |
568 | .rpc_argp = &arg, | |
569 | .rpc_resp = &res, | |
570 | }; | |
1da177e4 LT |
571 | int status; |
572 | ||
573 | if (path->len > NFS3_MAXPATHLEN) | |
574 | return -ENAMETOOLONG; | |
575 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | |
0e574af1 TM |
576 | nfs_fattr_init(&dir_attr); |
577 | nfs_fattr_init(fattr); | |
dead28da | 578 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 579 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
580 | dprintk("NFS reply symlink: %d\n", status); |
581 | return status; | |
582 | } | |
583 | ||
584 | static int | |
585 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
586 | { | |
587 | struct nfs_fh fhandle; | |
588 | struct nfs_fattr fattr, dir_attr; | |
589 | struct nfs3_mkdirargs arg = { | |
590 | .fh = NFS_FH(dir), | |
591 | .name = dentry->d_name.name, | |
592 | .len = dentry->d_name.len, | |
593 | .sattr = sattr | |
594 | }; | |
595 | struct nfs3_diropres res = { | |
596 | .dir_attr = &dir_attr, | |
597 | .fh = &fhandle, | |
598 | .fattr = &fattr | |
599 | }; | |
dead28da CL |
600 | struct rpc_message msg = { |
601 | .rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR], | |
602 | .rpc_argp = &arg, | |
603 | .rpc_resp = &res, | |
604 | }; | |
055ffbea AG |
605 | int mode = sattr->ia_mode; |
606 | int status; | |
1da177e4 LT |
607 | |
608 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea AG |
609 | |
610 | sattr->ia_mode &= ~current->fs->umask; | |
611 | ||
0e574af1 TM |
612 | nfs_fattr_init(&dir_attr); |
613 | nfs_fattr_init(&fattr); | |
dead28da | 614 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 615 | nfs_post_op_update_inode(dir, &dir_attr); |
055ffbea AG |
616 | if (status != 0) |
617 | goto out; | |
618 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
619 | if (status != 0) | |
620 | goto out; | |
621 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
622 | out: | |
1da177e4 LT |
623 | dprintk("NFS reply mkdir: %d\n", status); |
624 | return status; | |
625 | } | |
626 | ||
627 | static int | |
628 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
629 | { | |
630 | struct nfs_fattr dir_attr; | |
631 | struct nfs3_diropargs arg = { | |
632 | .fh = NFS_FH(dir), | |
633 | .name = name->name, | |
634 | .len = name->len | |
635 | }; | |
dead28da CL |
636 | struct rpc_message msg = { |
637 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
638 | .rpc_argp = &arg, | |
639 | .rpc_resp = &dir_attr, | |
640 | }; | |
1da177e4 LT |
641 | int status; |
642 | ||
643 | dprintk("NFS call rmdir %s\n", name->name); | |
0e574af1 | 644 | nfs_fattr_init(&dir_attr); |
dead28da | 645 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 646 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
647 | dprintk("NFS reply rmdir: %d\n", status); |
648 | return status; | |
649 | } | |
650 | ||
651 | /* | |
652 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
653 | * to the encode function, which installs it in the receive iovec. | |
654 | * The decode function itself doesn't perform any decoding, it just makes | |
655 | * sure the reply is syntactically correct. | |
656 | * | |
657 | * Also note that this implementation handles both plain readdir and | |
658 | * readdirplus. | |
659 | */ | |
660 | static int | |
661 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
662 | u64 cookie, struct page *page, unsigned int count, int plus) | |
663 | { | |
664 | struct inode *dir = dentry->d_inode; | |
665 | struct nfs_fattr dir_attr; | |
666 | u32 *verf = NFS_COOKIEVERF(dir); | |
667 | struct nfs3_readdirargs arg = { | |
668 | .fh = NFS_FH(dir), | |
669 | .cookie = cookie, | |
670 | .verf = {verf[0], verf[1]}, | |
671 | .plus = plus, | |
672 | .count = count, | |
673 | .pages = &page | |
674 | }; | |
675 | struct nfs3_readdirres res = { | |
676 | .dir_attr = &dir_attr, | |
677 | .verf = verf, | |
678 | .plus = plus | |
679 | }; | |
680 | struct rpc_message msg = { | |
681 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
682 | .rpc_argp = &arg, | |
683 | .rpc_resp = &res, | |
684 | .rpc_cred = cred | |
685 | }; | |
686 | int status; | |
687 | ||
688 | lock_kernel(); | |
689 | ||
690 | if (plus) | |
691 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
692 | ||
693 | dprintk("NFS call readdir%s %d\n", | |
694 | plus? "plus" : "", (unsigned int) cookie); | |
695 | ||
0e574af1 | 696 | nfs_fattr_init(&dir_attr); |
1da177e4 LT |
697 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
698 | nfs_refresh_inode(dir, &dir_attr); | |
699 | dprintk("NFS reply readdir: %d\n", status); | |
700 | unlock_kernel(); | |
701 | return status; | |
702 | } | |
703 | ||
704 | static int | |
705 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
706 | dev_t rdev) | |
707 | { | |
708 | struct nfs_fh fh; | |
709 | struct nfs_fattr fattr, dir_attr; | |
710 | struct nfs3_mknodargs arg = { | |
711 | .fh = NFS_FH(dir), | |
712 | .name = dentry->d_name.name, | |
713 | .len = dentry->d_name.len, | |
714 | .sattr = sattr, | |
715 | .rdev = rdev | |
716 | }; | |
717 | struct nfs3_diropres res = { | |
718 | .dir_attr = &dir_attr, | |
719 | .fh = &fh, | |
720 | .fattr = &fattr | |
721 | }; | |
dead28da CL |
722 | struct rpc_message msg = { |
723 | .rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD], | |
724 | .rpc_argp = &arg, | |
725 | .rpc_resp = &res, | |
726 | }; | |
055ffbea | 727 | mode_t mode = sattr->ia_mode; |
1da177e4 LT |
728 | int status; |
729 | ||
730 | switch (sattr->ia_mode & S_IFMT) { | |
731 | case S_IFBLK: arg.type = NF3BLK; break; | |
732 | case S_IFCHR: arg.type = NF3CHR; break; | |
733 | case S_IFIFO: arg.type = NF3FIFO; break; | |
734 | case S_IFSOCK: arg.type = NF3SOCK; break; | |
735 | default: return -EINVAL; | |
736 | } | |
737 | ||
738 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
739 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea AG |
740 | |
741 | sattr->ia_mode &= ~current->fs->umask; | |
742 | ||
0e574af1 TM |
743 | nfs_fattr_init(&dir_attr); |
744 | nfs_fattr_init(&fattr); | |
dead28da | 745 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 746 | nfs_post_op_update_inode(dir, &dir_attr); |
055ffbea AG |
747 | if (status != 0) |
748 | goto out; | |
749 | status = nfs_instantiate(dentry, &fh, &fattr); | |
750 | if (status != 0) | |
751 | goto out; | |
752 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
753 | out: | |
1da177e4 LT |
754 | dprintk("NFS reply mknod: %d\n", status); |
755 | return status; | |
756 | } | |
757 | ||
758 | static int | |
759 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
760 | struct nfs_fsstat *stat) | |
761 | { | |
dead28da CL |
762 | struct rpc_message msg = { |
763 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
764 | .rpc_argp = fhandle, | |
765 | .rpc_resp = stat, | |
766 | }; | |
1da177e4 LT |
767 | int status; |
768 | ||
769 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 770 | nfs_fattr_init(stat->fattr); |
dead28da | 771 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
772 | dprintk("NFS reply statfs: %d\n", status); |
773 | return status; | |
774 | } | |
775 | ||
776 | static int | |
777 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
778 | struct nfs_fsinfo *info) | |
779 | { | |
dead28da CL |
780 | struct rpc_message msg = { |
781 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
782 | .rpc_argp = fhandle, | |
783 | .rpc_resp = info, | |
784 | }; | |
1da177e4 LT |
785 | int status; |
786 | ||
787 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 788 | nfs_fattr_init(info->fattr); |
dead28da | 789 | status = rpc_call_sync(server->client_sys, &msg, 0); |
1da177e4 LT |
790 | dprintk("NFS reply fsinfo: %d\n", status); |
791 | return status; | |
792 | } | |
793 | ||
794 | static int | |
795 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
796 | struct nfs_pathconf *info) | |
797 | { | |
dead28da CL |
798 | struct rpc_message msg = { |
799 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
800 | .rpc_argp = fhandle, | |
801 | .rpc_resp = info, | |
802 | }; | |
1da177e4 LT |
803 | int status; |
804 | ||
805 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 806 | nfs_fattr_init(info->fattr); |
dead28da | 807 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
808 | dprintk("NFS reply pathconf: %d\n", status); |
809 | return status; | |
810 | } | |
811 | ||
812 | extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); | |
813 | ||
963d8fe5 | 814 | static void nfs3_read_done(struct rpc_task *task, void *calldata) |
1da177e4 | 815 | { |
963d8fe5 | 816 | struct nfs_read_data *data = calldata; |
1da177e4 | 817 | |
006ea73e | 818 | if (nfs3_async_handle_jukebox(task, data->inode)) |
1da177e4 LT |
819 | return; |
820 | /* Call back common NFS readpage processing */ | |
821 | if (task->tk_status >= 0) | |
822 | nfs_refresh_inode(data->inode, &data->fattr); | |
963d8fe5 | 823 | nfs_readpage_result(task, calldata); |
1da177e4 LT |
824 | } |
825 | ||
963d8fe5 TM |
826 | static const struct rpc_call_ops nfs3_read_ops = { |
827 | .rpc_call_done = nfs3_read_done, | |
828 | .rpc_release = nfs_readdata_release, | |
829 | }; | |
830 | ||
1da177e4 LT |
831 | static void |
832 | nfs3_proc_read_setup(struct nfs_read_data *data) | |
833 | { | |
834 | struct rpc_task *task = &data->task; | |
835 | struct inode *inode = data->inode; | |
836 | int flags; | |
837 | struct rpc_message msg = { | |
838 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
839 | .rpc_argp = &data->args, | |
840 | .rpc_resp = &data->res, | |
841 | .rpc_cred = data->cred, | |
842 | }; | |
843 | ||
844 | /* N.B. Do we need to test? Never called for swapfile inode */ | |
845 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | |
846 | ||
847 | /* Finalize the task. */ | |
963d8fe5 | 848 | rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs3_read_ops, data); |
1da177e4 LT |
849 | rpc_call_setup(task, &msg, 0); |
850 | } | |
851 | ||
788e7a89 | 852 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 853 | { |
006ea73e | 854 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 855 | return -EAGAIN; |
1da177e4 | 856 | if (task->tk_status >= 0) |
decf491f | 857 | nfs_post_op_update_inode(data->inode, data->res.fattr); |
788e7a89 | 858 | return 0; |
1da177e4 LT |
859 | } |
860 | ||
788e7a89 | 861 | static void nfs3_proc_write_setup(struct nfs_write_data *data, int how) |
1da177e4 | 862 | { |
1da177e4 LT |
863 | struct rpc_message msg = { |
864 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
865 | .rpc_argp = &data->args, | |
866 | .rpc_resp = &data->res, | |
867 | .rpc_cred = data->cred, | |
868 | }; | |
869 | ||
788e7a89 | 870 | data->args.stable = NFS_UNSTABLE; |
1da177e4 | 871 | if (how & FLUSH_STABLE) { |
788e7a89 TM |
872 | data->args.stable = NFS_FILE_SYNC; |
873 | if (NFS_I(data->inode)->ncommit) | |
874 | data->args.stable = NFS_DATA_SYNC; | |
875 | } | |
1da177e4 LT |
876 | |
877 | /* Finalize the task. */ | |
788e7a89 | 878 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
879 | } |
880 | ||
788e7a89 | 881 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 882 | { |
006ea73e | 883 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 884 | return -EAGAIN; |
1da177e4 | 885 | if (task->tk_status >= 0) |
decf491f | 886 | nfs_post_op_update_inode(data->inode, data->res.fattr); |
788e7a89 | 887 | return 0; |
1da177e4 LT |
888 | } |
889 | ||
788e7a89 | 890 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how) |
1da177e4 | 891 | { |
1da177e4 LT |
892 | struct rpc_message msg = { |
893 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
894 | .rpc_argp = &data->args, | |
895 | .rpc_resp = &data->res, | |
896 | .rpc_cred = data->cred, | |
897 | }; | |
898 | ||
788e7a89 | 899 | rpc_call_setup(&data->task, &msg, 0); |
1da177e4 LT |
900 | } |
901 | ||
902 | static int | |
903 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
904 | { | |
905 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | |
906 | } | |
907 | ||
908 | struct nfs_rpc_ops nfs_v3_clientops = { | |
909 | .version = 3, /* protocol version */ | |
910 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
911 | .dir_inode_ops = &nfs3_dir_inode_operations, |
912 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
913 | .getroot = nfs3_proc_get_root, |
914 | .getattr = nfs3_proc_getattr, | |
915 | .setattr = nfs3_proc_setattr, | |
916 | .lookup = nfs3_proc_lookup, | |
917 | .access = nfs3_proc_access, | |
918 | .readlink = nfs3_proc_readlink, | |
919 | .read = nfs3_proc_read, | |
920 | .write = nfs3_proc_write, | |
921 | .commit = nfs3_proc_commit, | |
922 | .create = nfs3_proc_create, | |
923 | .remove = nfs3_proc_remove, | |
924 | .unlink_setup = nfs3_proc_unlink_setup, | |
925 | .unlink_done = nfs3_proc_unlink_done, | |
926 | .rename = nfs3_proc_rename, | |
927 | .link = nfs3_proc_link, | |
928 | .symlink = nfs3_proc_symlink, | |
929 | .mkdir = nfs3_proc_mkdir, | |
930 | .rmdir = nfs3_proc_rmdir, | |
931 | .readdir = nfs3_proc_readdir, | |
932 | .mknod = nfs3_proc_mknod, | |
933 | .statfs = nfs3_proc_statfs, | |
934 | .fsinfo = nfs3_proc_fsinfo, | |
935 | .pathconf = nfs3_proc_pathconf, | |
936 | .decode_dirent = nfs3_decode_dirent, | |
937 | .read_setup = nfs3_proc_read_setup, | |
938 | .write_setup = nfs3_proc_write_setup, | |
788e7a89 | 939 | .write_done = nfs3_write_done, |
1da177e4 | 940 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 941 | .commit_done = nfs3_commit_done, |
1da177e4 LT |
942 | .file_open = nfs_open, |
943 | .file_release = nfs_release, | |
944 | .lock = nfs3_proc_lock, | |
5c6a9f7d | 945 | .clear_acl_cache = nfs3_forget_cached_acls, |
1da177e4 | 946 | }; |