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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 | ||
1da177e4 | 71 | static int |
03c21733 BF |
72 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
73 | struct nfs_fsinfo *info) | |
1da177e4 LT |
74 | { |
75 | int status; | |
76 | ||
77 | dprintk("%s: call fsinfo\n", __FUNCTION__); | |
0e574af1 | 78 | nfs_fattr_init(info->fattr); |
03c21733 | 79 | status = rpc_call(client, NFS3PROC_FSINFO, fhandle, info, 0); |
1da177e4 LT |
80 | dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status); |
81 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { | |
03c21733 | 82 | status = rpc_call(client, NFS3PROC_GETATTR, fhandle, info->fattr, 0); |
1da177e4 LT |
83 | dprintk("%s: reply getattr: %d\n", __FUNCTION__, status); |
84 | } | |
85 | return status; | |
86 | } | |
87 | ||
03c21733 BF |
88 | /* |
89 | * Bare-bones access to getattr: this is for nfs_read_super. | |
90 | */ | |
91 | static int | |
92 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
93 | struct nfs_fsinfo *info) | |
94 | { | |
95 | int status; | |
96 | ||
97 | status = do_proc_get_root(server->client, fhandle, info); | |
98 | if (status && server->client_sys != server->client) | |
99 | status = do_proc_get_root(server->client_sys, fhandle, info); | |
100 | return status; | |
101 | } | |
102 | ||
1da177e4 LT |
103 | /* |
104 | * One function for each procedure in the NFS protocol. | |
105 | */ | |
106 | static int | |
107 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
108 | struct nfs_fattr *fattr) | |
109 | { | |
110 | int status; | |
111 | ||
112 | dprintk("NFS call getattr\n"); | |
0e574af1 | 113 | nfs_fattr_init(fattr); |
1da177e4 LT |
114 | status = rpc_call(server->client, NFS3PROC_GETATTR, |
115 | fhandle, fattr, 0); | |
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 | }; | |
129 | int status; | |
130 | ||
131 | dprintk("NFS call setattr\n"); | |
0e574af1 | 132 | nfs_fattr_init(fattr); |
1da177e4 | 133 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0); |
65e4308d TM |
134 | if (status == 0) |
135 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
136 | dprintk("NFS reply setattr: %d\n", status); |
137 | return status; | |
138 | } | |
139 | ||
140 | static int | |
141 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
142 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
143 | { | |
144 | struct nfs_fattr dir_attr; | |
145 | struct nfs3_diropargs arg = { | |
146 | .fh = NFS_FH(dir), | |
147 | .name = name->name, | |
148 | .len = name->len | |
149 | }; | |
150 | struct nfs3_diropres res = { | |
151 | .dir_attr = &dir_attr, | |
152 | .fh = fhandle, | |
153 | .fattr = fattr | |
154 | }; | |
155 | int status; | |
156 | ||
157 | dprintk("NFS call lookup %s\n", name->name); | |
0e574af1 TM |
158 | nfs_fattr_init(&dir_attr); |
159 | nfs_fattr_init(fattr); | |
1da177e4 LT |
160 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0); |
161 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) | |
162 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR, | |
163 | fhandle, fattr, 0); | |
164 | dprintk("NFS reply lookup: %d\n", status); | |
165 | if (status >= 0) | |
166 | status = nfs_refresh_inode(dir, &dir_attr); | |
167 | return status; | |
168 | } | |
169 | ||
170 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
171 | { | |
172 | struct nfs_fattr fattr; | |
173 | struct nfs3_accessargs arg = { | |
174 | .fh = NFS_FH(inode), | |
175 | }; | |
176 | struct nfs3_accessres res = { | |
177 | .fattr = &fattr, | |
178 | }; | |
179 | struct rpc_message msg = { | |
180 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
181 | .rpc_argp = &arg, | |
182 | .rpc_resp = &res, | |
183 | .rpc_cred = entry->cred | |
184 | }; | |
185 | int mode = entry->mask; | |
186 | int status; | |
187 | ||
188 | dprintk("NFS call access\n"); | |
1da177e4 LT |
189 | |
190 | if (mode & MAY_READ) | |
191 | arg.access |= NFS3_ACCESS_READ; | |
192 | if (S_ISDIR(inode->i_mode)) { | |
193 | if (mode & MAY_WRITE) | |
194 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
195 | if (mode & MAY_EXEC) | |
196 | arg.access |= NFS3_ACCESS_LOOKUP; | |
197 | } else { | |
198 | if (mode & MAY_WRITE) | |
199 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
200 | if (mode & MAY_EXEC) | |
201 | arg.access |= NFS3_ACCESS_EXECUTE; | |
202 | } | |
0e574af1 | 203 | nfs_fattr_init(&fattr); |
1da177e4 LT |
204 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
205 | nfs_refresh_inode(inode, &fattr); | |
206 | if (status == 0) { | |
207 | entry->mask = 0; | |
208 | if (res.access & NFS3_ACCESS_READ) | |
209 | entry->mask |= MAY_READ; | |
210 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
211 | entry->mask |= MAY_WRITE; | |
212 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
213 | entry->mask |= MAY_EXEC; | |
214 | } | |
215 | dprintk("NFS reply access: %d\n", status); | |
216 | return status; | |
217 | } | |
218 | ||
219 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
220 | unsigned int pgbase, unsigned int pglen) | |
221 | { | |
222 | struct nfs_fattr fattr; | |
223 | struct nfs3_readlinkargs args = { | |
224 | .fh = NFS_FH(inode), | |
225 | .pgbase = pgbase, | |
226 | .pglen = pglen, | |
227 | .pages = &page | |
228 | }; | |
229 | int status; | |
230 | ||
231 | dprintk("NFS call readlink\n"); | |
0e574af1 | 232 | nfs_fattr_init(&fattr); |
1da177e4 LT |
233 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK, |
234 | &args, &fattr, 0); | |
235 | nfs_refresh_inode(inode, &fattr); | |
236 | dprintk("NFS reply readlink: %d\n", status); | |
237 | return status; | |
238 | } | |
239 | ||
240 | static int nfs3_proc_read(struct nfs_read_data *rdata) | |
241 | { | |
242 | int flags = rdata->flags; | |
243 | struct inode * inode = rdata->inode; | |
244 | struct nfs_fattr * fattr = rdata->res.fattr; | |
245 | struct rpc_message msg = { | |
246 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
247 | .rpc_argp = &rdata->args, | |
248 | .rpc_resp = &rdata->res, | |
249 | .rpc_cred = rdata->cred, | |
250 | }; | |
251 | int status; | |
252 | ||
253 | dprintk("NFS call read %d @ %Ld\n", rdata->args.count, | |
254 | (long long) rdata->args.offset); | |
0e574af1 | 255 | nfs_fattr_init(fattr); |
1da177e4 LT |
256 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, flags); |
257 | if (status >= 0) | |
258 | nfs_refresh_inode(inode, fattr); | |
259 | dprintk("NFS reply read: %d\n", status); | |
260 | return status; | |
261 | } | |
262 | ||
263 | static int nfs3_proc_write(struct nfs_write_data *wdata) | |
264 | { | |
265 | int rpcflags = wdata->flags; | |
266 | struct inode * inode = wdata->inode; | |
267 | struct nfs_fattr * fattr = wdata->res.fattr; | |
268 | struct rpc_message msg = { | |
269 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
270 | .rpc_argp = &wdata->args, | |
271 | .rpc_resp = &wdata->res, | |
272 | .rpc_cred = wdata->cred, | |
273 | }; | |
274 | int status; | |
275 | ||
276 | dprintk("NFS call write %d @ %Ld\n", wdata->args.count, | |
277 | (long long) wdata->args.offset); | |
0e574af1 | 278 | nfs_fattr_init(fattr); |
1da177e4 LT |
279 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, rpcflags); |
280 | if (status >= 0) | |
decf491f | 281 | nfs_post_op_update_inode(inode, fattr); |
1da177e4 LT |
282 | dprintk("NFS reply write: %d\n", status); |
283 | return status < 0? status : wdata->res.count; | |
284 | } | |
285 | ||
286 | static int nfs3_proc_commit(struct nfs_write_data *cdata) | |
287 | { | |
288 | struct inode * inode = cdata->inode; | |
289 | struct nfs_fattr * fattr = cdata->res.fattr; | |
290 | struct rpc_message msg = { | |
291 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
292 | .rpc_argp = &cdata->args, | |
293 | .rpc_resp = &cdata->res, | |
294 | .rpc_cred = cdata->cred, | |
295 | }; | |
296 | int status; | |
297 | ||
298 | dprintk("NFS call commit %d @ %Ld\n", cdata->args.count, | |
299 | (long long) cdata->args.offset); | |
0e574af1 | 300 | nfs_fattr_init(fattr); |
1da177e4 LT |
301 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
302 | if (status >= 0) | |
decf491f | 303 | nfs_post_op_update_inode(inode, fattr); |
1da177e4 LT |
304 | dprintk("NFS reply commit: %d\n", status); |
305 | return status; | |
306 | } | |
307 | ||
308 | /* | |
309 | * Create a regular file. | |
310 | * For now, we don't implement O_EXCL. | |
311 | */ | |
312 | static int | |
313 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 314 | int flags, struct nameidata *nd) |
1da177e4 LT |
315 | { |
316 | struct nfs_fh fhandle; | |
317 | struct nfs_fattr fattr; | |
318 | struct nfs_fattr dir_attr; | |
319 | struct nfs3_createargs arg = { | |
320 | .fh = NFS_FH(dir), | |
321 | .name = dentry->d_name.name, | |
322 | .len = dentry->d_name.len, | |
323 | .sattr = sattr, | |
324 | }; | |
325 | struct nfs3_diropres res = { | |
326 | .dir_attr = &dir_attr, | |
327 | .fh = &fhandle, | |
328 | .fattr = &fattr | |
329 | }; | |
055ffbea AG |
330 | mode_t mode = sattr->ia_mode; |
331 | int status; | |
1da177e4 LT |
332 | |
333 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
334 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
335 | if (flags & O_EXCL) { | |
336 | arg.createmode = NFS3_CREATE_EXCLUSIVE; | |
337 | arg.verifier[0] = jiffies; | |
338 | arg.verifier[1] = current->pid; | |
339 | } | |
340 | ||
055ffbea AG |
341 | sattr->ia_mode &= ~current->fs->umask; |
342 | ||
1da177e4 | 343 | again: |
0e574af1 TM |
344 | nfs_fattr_init(&dir_attr); |
345 | nfs_fattr_init(&fattr); | |
1da177e4 | 346 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0); |
decf491f | 347 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
348 | |
349 | /* If the server doesn't support the exclusive creation semantics, | |
350 | * try again with simple 'guarded' mode. */ | |
351 | if (status == NFSERR_NOTSUPP) { | |
352 | switch (arg.createmode) { | |
353 | case NFS3_CREATE_EXCLUSIVE: | |
354 | arg.createmode = NFS3_CREATE_GUARDED; | |
355 | break; | |
356 | ||
357 | case NFS3_CREATE_GUARDED: | |
358 | arg.createmode = NFS3_CREATE_UNCHECKED; | |
359 | break; | |
360 | ||
361 | case NFS3_CREATE_UNCHECKED: | |
362 | goto out; | |
363 | } | |
364 | goto again; | |
365 | } | |
366 | ||
367 | if (status == 0) | |
368 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
369 | if (status != 0) | |
370 | goto out; | |
371 | ||
372 | /* When we created the file with exclusive semantics, make | |
373 | * sure we set the attributes afterwards. */ | |
374 | if (arg.createmode == NFS3_CREATE_EXCLUSIVE) { | |
375 | dprintk("NFS call setattr (post-create)\n"); | |
376 | ||
377 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
378 | sattr->ia_valid |= ATTR_ATIME; | |
379 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
380 | sattr->ia_valid |= ATTR_MTIME; | |
381 | ||
382 | /* Note: we could use a guarded setattr here, but I'm | |
383 | * not sure this buys us anything (and I'd have | |
384 | * to revamp the NFSv3 XDR code) */ | |
385 | status = nfs3_proc_setattr(dentry, &fattr, sattr); | |
65e4308d TM |
386 | if (status == 0) |
387 | nfs_setattr_update_inode(dentry->d_inode, sattr); | |
1da177e4 LT |
388 | nfs_refresh_inode(dentry->d_inode, &fattr); |
389 | dprintk("NFS reply setattr (post-create): %d\n", status); | |
390 | } | |
055ffbea AG |
391 | if (status != 0) |
392 | goto out; | |
393 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
1da177e4 LT |
394 | out: |
395 | dprintk("NFS reply create: %d\n", status); | |
396 | return status; | |
397 | } | |
398 | ||
399 | static int | |
400 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
401 | { | |
402 | struct nfs_fattr dir_attr; | |
403 | struct nfs3_diropargs arg = { | |
404 | .fh = NFS_FH(dir), | |
405 | .name = name->name, | |
406 | .len = name->len | |
407 | }; | |
408 | struct rpc_message msg = { | |
409 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
410 | .rpc_argp = &arg, | |
411 | .rpc_resp = &dir_attr, | |
412 | }; | |
413 | int status; | |
414 | ||
415 | dprintk("NFS call remove %s\n", name->name); | |
0e574af1 | 416 | nfs_fattr_init(&dir_attr); |
1da177e4 | 417 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 418 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
419 | dprintk("NFS reply remove: %d\n", status); |
420 | return status; | |
421 | } | |
422 | ||
423 | static int | |
424 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir, struct qstr *name) | |
425 | { | |
426 | struct unlinkxdr { | |
427 | struct nfs3_diropargs arg; | |
428 | struct nfs_fattr res; | |
429 | } *ptr; | |
430 | ||
431 | ptr = (struct unlinkxdr *)kmalloc(sizeof(*ptr), GFP_KERNEL); | |
432 | if (!ptr) | |
433 | return -ENOMEM; | |
434 | ptr->arg.fh = NFS_FH(dir->d_inode); | |
435 | ptr->arg.name = name->name; | |
436 | ptr->arg.len = name->len; | |
0e574af1 | 437 | nfs_fattr_init(&ptr->res); |
1da177e4 LT |
438 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
439 | msg->rpc_argp = &ptr->arg; | |
440 | msg->rpc_resp = &ptr->res; | |
441 | return 0; | |
442 | } | |
443 | ||
444 | static int | |
445 | nfs3_proc_unlink_done(struct dentry *dir, struct rpc_task *task) | |
446 | { | |
447 | struct rpc_message *msg = &task->tk_msg; | |
448 | struct nfs_fattr *dir_attr; | |
449 | ||
450 | if (nfs3_async_handle_jukebox(task)) | |
451 | return 1; | |
452 | if (msg->rpc_argp) { | |
453 | dir_attr = (struct nfs_fattr*)msg->rpc_resp; | |
decf491f | 454 | nfs_post_op_update_inode(dir->d_inode, dir_attr); |
1da177e4 LT |
455 | kfree(msg->rpc_argp); |
456 | } | |
457 | return 0; | |
458 | } | |
459 | ||
460 | static int | |
461 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
462 | struct inode *new_dir, struct qstr *new_name) | |
463 | { | |
464 | struct nfs_fattr old_dir_attr, new_dir_attr; | |
465 | struct nfs3_renameargs arg = { | |
466 | .fromfh = NFS_FH(old_dir), | |
467 | .fromname = old_name->name, | |
468 | .fromlen = old_name->len, | |
469 | .tofh = NFS_FH(new_dir), | |
470 | .toname = new_name->name, | |
471 | .tolen = new_name->len | |
472 | }; | |
473 | struct nfs3_renameres res = { | |
474 | .fromattr = &old_dir_attr, | |
475 | .toattr = &new_dir_attr | |
476 | }; | |
477 | int status; | |
478 | ||
479 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
0e574af1 TM |
480 | nfs_fattr_init(&old_dir_attr); |
481 | nfs_fattr_init(&new_dir_attr); | |
1da177e4 | 482 | status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0); |
decf491f TM |
483 | nfs_post_op_update_inode(old_dir, &old_dir_attr); |
484 | nfs_post_op_update_inode(new_dir, &new_dir_attr); | |
1da177e4 LT |
485 | dprintk("NFS reply rename: %d\n", status); |
486 | return status; | |
487 | } | |
488 | ||
489 | static int | |
490 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
491 | { | |
492 | struct nfs_fattr dir_attr, fattr; | |
493 | struct nfs3_linkargs arg = { | |
494 | .fromfh = NFS_FH(inode), | |
495 | .tofh = NFS_FH(dir), | |
496 | .toname = name->name, | |
497 | .tolen = name->len | |
498 | }; | |
499 | struct nfs3_linkres res = { | |
500 | .dir_attr = &dir_attr, | |
501 | .fattr = &fattr | |
502 | }; | |
503 | int status; | |
504 | ||
505 | dprintk("NFS call link %s\n", name->name); | |
0e574af1 TM |
506 | nfs_fattr_init(&dir_attr); |
507 | nfs_fattr_init(&fattr); | |
1da177e4 | 508 | status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0); |
decf491f TM |
509 | nfs_post_op_update_inode(dir, &dir_attr); |
510 | nfs_post_op_update_inode(inode, &fattr); | |
1da177e4 LT |
511 | dprintk("NFS reply link: %d\n", status); |
512 | return status; | |
513 | } | |
514 | ||
515 | static int | |
516 | nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path, | |
517 | struct iattr *sattr, struct nfs_fh *fhandle, | |
518 | struct nfs_fattr *fattr) | |
519 | { | |
520 | struct nfs_fattr dir_attr; | |
521 | struct nfs3_symlinkargs arg = { | |
522 | .fromfh = NFS_FH(dir), | |
523 | .fromname = name->name, | |
524 | .fromlen = name->len, | |
525 | .topath = path->name, | |
526 | .tolen = path->len, | |
527 | .sattr = sattr | |
528 | }; | |
529 | struct nfs3_diropres res = { | |
530 | .dir_attr = &dir_attr, | |
531 | .fh = fhandle, | |
532 | .fattr = fattr | |
533 | }; | |
534 | int status; | |
535 | ||
536 | if (path->len > NFS3_MAXPATHLEN) | |
537 | return -ENAMETOOLONG; | |
538 | dprintk("NFS call symlink %s -> %s\n", name->name, path->name); | |
0e574af1 TM |
539 | nfs_fattr_init(&dir_attr); |
540 | nfs_fattr_init(fattr); | |
1da177e4 | 541 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0); |
decf491f | 542 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
543 | dprintk("NFS reply symlink: %d\n", status); |
544 | return status; | |
545 | } | |
546 | ||
547 | static int | |
548 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
549 | { | |
550 | struct nfs_fh fhandle; | |
551 | struct nfs_fattr fattr, dir_attr; | |
552 | struct nfs3_mkdirargs arg = { | |
553 | .fh = NFS_FH(dir), | |
554 | .name = dentry->d_name.name, | |
555 | .len = dentry->d_name.len, | |
556 | .sattr = sattr | |
557 | }; | |
558 | struct nfs3_diropres res = { | |
559 | .dir_attr = &dir_attr, | |
560 | .fh = &fhandle, | |
561 | .fattr = &fattr | |
562 | }; | |
055ffbea AG |
563 | int mode = sattr->ia_mode; |
564 | int status; | |
1da177e4 LT |
565 | |
566 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea AG |
567 | |
568 | sattr->ia_mode &= ~current->fs->umask; | |
569 | ||
0e574af1 TM |
570 | nfs_fattr_init(&dir_attr); |
571 | nfs_fattr_init(&fattr); | |
1da177e4 | 572 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0); |
decf491f | 573 | nfs_post_op_update_inode(dir, &dir_attr); |
055ffbea AG |
574 | if (status != 0) |
575 | goto out; | |
576 | status = nfs_instantiate(dentry, &fhandle, &fattr); | |
577 | if (status != 0) | |
578 | goto out; | |
579 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
580 | out: | |
1da177e4 LT |
581 | dprintk("NFS reply mkdir: %d\n", status); |
582 | return status; | |
583 | } | |
584 | ||
585 | static int | |
586 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
587 | { | |
588 | struct nfs_fattr dir_attr; | |
589 | struct nfs3_diropargs arg = { | |
590 | .fh = NFS_FH(dir), | |
591 | .name = name->name, | |
592 | .len = name->len | |
593 | }; | |
594 | int status; | |
595 | ||
596 | dprintk("NFS call rmdir %s\n", name->name); | |
0e574af1 | 597 | nfs_fattr_init(&dir_attr); |
1da177e4 | 598 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0); |
decf491f | 599 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
600 | dprintk("NFS reply rmdir: %d\n", status); |
601 | return status; | |
602 | } | |
603 | ||
604 | /* | |
605 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
606 | * to the encode function, which installs it in the receive iovec. | |
607 | * The decode function itself doesn't perform any decoding, it just makes | |
608 | * sure the reply is syntactically correct. | |
609 | * | |
610 | * Also note that this implementation handles both plain readdir and | |
611 | * readdirplus. | |
612 | */ | |
613 | static int | |
614 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
615 | u64 cookie, struct page *page, unsigned int count, int plus) | |
616 | { | |
617 | struct inode *dir = dentry->d_inode; | |
618 | struct nfs_fattr dir_attr; | |
619 | u32 *verf = NFS_COOKIEVERF(dir); | |
620 | struct nfs3_readdirargs arg = { | |
621 | .fh = NFS_FH(dir), | |
622 | .cookie = cookie, | |
623 | .verf = {verf[0], verf[1]}, | |
624 | .plus = plus, | |
625 | .count = count, | |
626 | .pages = &page | |
627 | }; | |
628 | struct nfs3_readdirres res = { | |
629 | .dir_attr = &dir_attr, | |
630 | .verf = verf, | |
631 | .plus = plus | |
632 | }; | |
633 | struct rpc_message msg = { | |
634 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
635 | .rpc_argp = &arg, | |
636 | .rpc_resp = &res, | |
637 | .rpc_cred = cred | |
638 | }; | |
639 | int status; | |
640 | ||
641 | lock_kernel(); | |
642 | ||
643 | if (plus) | |
644 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
645 | ||
646 | dprintk("NFS call readdir%s %d\n", | |
647 | plus? "plus" : "", (unsigned int) cookie); | |
648 | ||
0e574af1 | 649 | nfs_fattr_init(&dir_attr); |
1da177e4 LT |
650 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
651 | nfs_refresh_inode(dir, &dir_attr); | |
652 | dprintk("NFS reply readdir: %d\n", status); | |
653 | unlock_kernel(); | |
654 | return status; | |
655 | } | |
656 | ||
657 | static int | |
658 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
659 | dev_t rdev) | |
660 | { | |
661 | struct nfs_fh fh; | |
662 | struct nfs_fattr fattr, dir_attr; | |
663 | struct nfs3_mknodargs arg = { | |
664 | .fh = NFS_FH(dir), | |
665 | .name = dentry->d_name.name, | |
666 | .len = dentry->d_name.len, | |
667 | .sattr = sattr, | |
668 | .rdev = rdev | |
669 | }; | |
670 | struct nfs3_diropres res = { | |
671 | .dir_attr = &dir_attr, | |
672 | .fh = &fh, | |
673 | .fattr = &fattr | |
674 | }; | |
055ffbea | 675 | mode_t mode = sattr->ia_mode; |
1da177e4 LT |
676 | int status; |
677 | ||
678 | switch (sattr->ia_mode & S_IFMT) { | |
679 | case S_IFBLK: arg.type = NF3BLK; break; | |
680 | case S_IFCHR: arg.type = NF3CHR; break; | |
681 | case S_IFIFO: arg.type = NF3FIFO; break; | |
682 | case S_IFSOCK: arg.type = NF3SOCK; break; | |
683 | default: return -EINVAL; | |
684 | } | |
685 | ||
686 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
687 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea AG |
688 | |
689 | sattr->ia_mode &= ~current->fs->umask; | |
690 | ||
0e574af1 TM |
691 | nfs_fattr_init(&dir_attr); |
692 | nfs_fattr_init(&fattr); | |
1da177e4 | 693 | status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0); |
decf491f | 694 | nfs_post_op_update_inode(dir, &dir_attr); |
055ffbea AG |
695 | if (status != 0) |
696 | goto out; | |
697 | status = nfs_instantiate(dentry, &fh, &fattr); | |
698 | if (status != 0) | |
699 | goto out; | |
700 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
701 | out: | |
1da177e4 LT |
702 | dprintk("NFS reply mknod: %d\n", status); |
703 | return status; | |
704 | } | |
705 | ||
706 | static int | |
707 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
708 | struct nfs_fsstat *stat) | |
709 | { | |
710 | int status; | |
711 | ||
712 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 713 | nfs_fattr_init(stat->fattr); |
1da177e4 LT |
714 | status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0); |
715 | dprintk("NFS reply statfs: %d\n", status); | |
716 | return status; | |
717 | } | |
718 | ||
719 | static int | |
720 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
721 | struct nfs_fsinfo *info) | |
722 | { | |
723 | int status; | |
724 | ||
725 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 726 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
727 | status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0); |
728 | dprintk("NFS reply fsinfo: %d\n", status); | |
729 | return status; | |
730 | } | |
731 | ||
732 | static int | |
733 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
734 | struct nfs_pathconf *info) | |
735 | { | |
736 | int status; | |
737 | ||
738 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 739 | nfs_fattr_init(info->fattr); |
1da177e4 LT |
740 | status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0); |
741 | dprintk("NFS reply pathconf: %d\n", status); | |
742 | return status; | |
743 | } | |
744 | ||
745 | extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int); | |
746 | ||
963d8fe5 | 747 | static void nfs3_read_done(struct rpc_task *task, void *calldata) |
1da177e4 | 748 | { |
963d8fe5 | 749 | struct nfs_read_data *data = calldata; |
1da177e4 LT |
750 | |
751 | if (nfs3_async_handle_jukebox(task)) | |
752 | return; | |
753 | /* Call back common NFS readpage processing */ | |
754 | if (task->tk_status >= 0) | |
755 | nfs_refresh_inode(data->inode, &data->fattr); | |
963d8fe5 | 756 | nfs_readpage_result(task, calldata); |
1da177e4 LT |
757 | } |
758 | ||
963d8fe5 TM |
759 | static const struct rpc_call_ops nfs3_read_ops = { |
760 | .rpc_call_done = nfs3_read_done, | |
761 | .rpc_release = nfs_readdata_release, | |
762 | }; | |
763 | ||
1da177e4 LT |
764 | static void |
765 | nfs3_proc_read_setup(struct nfs_read_data *data) | |
766 | { | |
767 | struct rpc_task *task = &data->task; | |
768 | struct inode *inode = data->inode; | |
769 | int flags; | |
770 | struct rpc_message msg = { | |
771 | .rpc_proc = &nfs3_procedures[NFS3PROC_READ], | |
772 | .rpc_argp = &data->args, | |
773 | .rpc_resp = &data->res, | |
774 | .rpc_cred = data->cred, | |
775 | }; | |
776 | ||
777 | /* N.B. Do we need to test? Never called for swapfile inode */ | |
778 | flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0); | |
779 | ||
780 | /* Finalize the task. */ | |
963d8fe5 | 781 | rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs3_read_ops, data); |
1da177e4 LT |
782 | rpc_call_setup(task, &msg, 0); |
783 | } | |
784 | ||
963d8fe5 | 785 | static void nfs3_write_done(struct rpc_task *task, void *calldata) |
1da177e4 | 786 | { |
963d8fe5 | 787 | struct nfs_write_data *data = calldata; |
1da177e4 LT |
788 | |
789 | if (nfs3_async_handle_jukebox(task)) | |
790 | return; | |
1da177e4 | 791 | if (task->tk_status >= 0) |
decf491f | 792 | nfs_post_op_update_inode(data->inode, data->res.fattr); |
963d8fe5 | 793 | nfs_writeback_done(task, calldata); |
1da177e4 LT |
794 | } |
795 | ||
963d8fe5 TM |
796 | static const struct rpc_call_ops nfs3_write_ops = { |
797 | .rpc_call_done = nfs3_write_done, | |
798 | .rpc_release = nfs_writedata_release, | |
799 | }; | |
800 | ||
1da177e4 LT |
801 | static void |
802 | nfs3_proc_write_setup(struct nfs_write_data *data, int how) | |
803 | { | |
804 | struct rpc_task *task = &data->task; | |
805 | struct inode *inode = data->inode; | |
806 | int stable; | |
807 | int flags; | |
808 | struct rpc_message msg = { | |
809 | .rpc_proc = &nfs3_procedures[NFS3PROC_WRITE], | |
810 | .rpc_argp = &data->args, | |
811 | .rpc_resp = &data->res, | |
812 | .rpc_cred = data->cred, | |
813 | }; | |
814 | ||
815 | if (how & FLUSH_STABLE) { | |
816 | if (!NFS_I(inode)->ncommit) | |
817 | stable = NFS_FILE_SYNC; | |
818 | else | |
819 | stable = NFS_DATA_SYNC; | |
820 | } else | |
821 | stable = NFS_UNSTABLE; | |
822 | data->args.stable = stable; | |
823 | ||
824 | /* Set the initial flags for the task. */ | |
825 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
826 | ||
827 | /* Finalize the task. */ | |
963d8fe5 | 828 | rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs3_write_ops, data); |
1da177e4 LT |
829 | rpc_call_setup(task, &msg, 0); |
830 | } | |
831 | ||
963d8fe5 | 832 | static void nfs3_commit_done(struct rpc_task *task, void *calldata) |
1da177e4 | 833 | { |
963d8fe5 | 834 | struct nfs_write_data *data = calldata; |
1da177e4 LT |
835 | |
836 | if (nfs3_async_handle_jukebox(task)) | |
837 | return; | |
1da177e4 | 838 | if (task->tk_status >= 0) |
decf491f | 839 | nfs_post_op_update_inode(data->inode, data->res.fattr); |
963d8fe5 | 840 | nfs_commit_done(task, calldata); |
1da177e4 LT |
841 | } |
842 | ||
963d8fe5 TM |
843 | static const struct rpc_call_ops nfs3_commit_ops = { |
844 | .rpc_call_done = nfs3_commit_done, | |
845 | .rpc_release = nfs_commit_release, | |
846 | }; | |
847 | ||
1da177e4 LT |
848 | static void |
849 | nfs3_proc_commit_setup(struct nfs_write_data *data, int how) | |
850 | { | |
851 | struct rpc_task *task = &data->task; | |
852 | struct inode *inode = data->inode; | |
853 | int flags; | |
854 | struct rpc_message msg = { | |
855 | .rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT], | |
856 | .rpc_argp = &data->args, | |
857 | .rpc_resp = &data->res, | |
858 | .rpc_cred = data->cred, | |
859 | }; | |
860 | ||
861 | /* Set the initial flags for the task. */ | |
862 | flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC; | |
863 | ||
864 | /* Finalize the task. */ | |
963d8fe5 | 865 | rpc_init_task(task, NFS_CLIENT(inode), flags, &nfs3_commit_ops, data); |
1da177e4 LT |
866 | rpc_call_setup(task, &msg, 0); |
867 | } | |
868 | ||
869 | static int | |
870 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
871 | { | |
872 | return nlmclnt_proc(filp->f_dentry->d_inode, cmd, fl); | |
873 | } | |
874 | ||
875 | struct nfs_rpc_ops nfs_v3_clientops = { | |
876 | .version = 3, /* protocol version */ | |
877 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
878 | .dir_inode_ops = &nfs3_dir_inode_operations, |
879 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
880 | .getroot = nfs3_proc_get_root, |
881 | .getattr = nfs3_proc_getattr, | |
882 | .setattr = nfs3_proc_setattr, | |
883 | .lookup = nfs3_proc_lookup, | |
884 | .access = nfs3_proc_access, | |
885 | .readlink = nfs3_proc_readlink, | |
886 | .read = nfs3_proc_read, | |
887 | .write = nfs3_proc_write, | |
888 | .commit = nfs3_proc_commit, | |
889 | .create = nfs3_proc_create, | |
890 | .remove = nfs3_proc_remove, | |
891 | .unlink_setup = nfs3_proc_unlink_setup, | |
892 | .unlink_done = nfs3_proc_unlink_done, | |
893 | .rename = nfs3_proc_rename, | |
894 | .link = nfs3_proc_link, | |
895 | .symlink = nfs3_proc_symlink, | |
896 | .mkdir = nfs3_proc_mkdir, | |
897 | .rmdir = nfs3_proc_rmdir, | |
898 | .readdir = nfs3_proc_readdir, | |
899 | .mknod = nfs3_proc_mknod, | |
900 | .statfs = nfs3_proc_statfs, | |
901 | .fsinfo = nfs3_proc_fsinfo, | |
902 | .pathconf = nfs3_proc_pathconf, | |
903 | .decode_dirent = nfs3_decode_dirent, | |
904 | .read_setup = nfs3_proc_read_setup, | |
905 | .write_setup = nfs3_proc_write_setup, | |
906 | .commit_setup = nfs3_proc_commit_setup, | |
907 | .file_open = nfs_open, | |
908 | .file_release = nfs_release, | |
909 | .lock = nfs3_proc_lock, | |
5c6a9f7d | 910 | .clear_acl_cache = nfs3_forget_cached_acls, |
1da177e4 | 911 | }; |