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> | |
b7fa0554 | 19 | #include <linux/nfs_mount.h> |
1da177e4 | 20 | |
006ea73e | 21 | #include "iostat.h" |
f7b422b1 | 22 | #include "internal.h" |
006ea73e | 23 | |
1da177e4 LT |
24 | #define NFSDBG_FACILITY NFSDBG_PROC |
25 | ||
1da177e4 LT |
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 | { | |
1da177e4 | 30 | int res; |
1da177e4 LT |
31 | do { |
32 | res = rpc_call_sync(clnt, msg, flags); | |
33 | if (res != -EJUKEBOX) | |
34 | break; | |
150030b7 | 35 | schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME); |
1da177e4 | 36 | res = -ERESTARTSYS; |
150030b7 | 37 | } while (!fatal_signal_pending(current)); |
1da177e4 LT |
38 | return res; |
39 | } | |
40 | ||
dead28da | 41 | #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags) |
1da177e4 LT |
42 | |
43 | static int | |
006ea73e | 44 | nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode) |
1da177e4 LT |
45 | { |
46 | if (task->tk_status != -EJUKEBOX) | |
47 | return 0; | |
006ea73e | 48 | nfs_inc_stats(inode, NFSIOS_DELAY); |
1da177e4 LT |
49 | task->tk_status = 0; |
50 | rpc_restart_call(task); | |
51 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
52 | return 1; | |
53 | } | |
54 | ||
1da177e4 | 55 | static int |
03c21733 BF |
56 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
57 | struct nfs_fsinfo *info) | |
1da177e4 | 58 | { |
dead28da CL |
59 | struct rpc_message msg = { |
60 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
61 | .rpc_argp = fhandle, | |
62 | .rpc_resp = info, | |
63 | }; | |
1da177e4 LT |
64 | int status; |
65 | ||
3110ff80 | 66 | dprintk("%s: call fsinfo\n", __func__); |
0e574af1 | 67 | nfs_fattr_init(info->fattr); |
dead28da | 68 | status = rpc_call_sync(client, &msg, 0); |
3110ff80 | 69 | dprintk("%s: reply fsinfo: %d\n", __func__, status); |
1da177e4 | 70 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { |
dead28da CL |
71 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; |
72 | msg.rpc_resp = info->fattr; | |
73 | status = rpc_call_sync(client, &msg, 0); | |
3110ff80 | 74 | dprintk("%s: reply getattr: %d\n", __func__, status); |
1da177e4 LT |
75 | } |
76 | return status; | |
77 | } | |
78 | ||
03c21733 | 79 | /* |
54ceac45 | 80 | * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb |
03c21733 BF |
81 | */ |
82 | static int | |
83 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
84 | struct nfs_fsinfo *info) | |
85 | { | |
86 | int status; | |
87 | ||
88 | status = do_proc_get_root(server->client, fhandle, info); | |
5006a76c DH |
89 | if (status && server->nfs_client->cl_rpcclient != server->client) |
90 | status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info); | |
03c21733 BF |
91 | return status; |
92 | } | |
93 | ||
1da177e4 LT |
94 | /* |
95 | * One function for each procedure in the NFS protocol. | |
96 | */ | |
97 | static int | |
98 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
99 | struct nfs_fattr *fattr) | |
100 | { | |
dead28da CL |
101 | struct rpc_message msg = { |
102 | .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], | |
103 | .rpc_argp = fhandle, | |
104 | .rpc_resp = fattr, | |
105 | }; | |
1da177e4 LT |
106 | int status; |
107 | ||
108 | dprintk("NFS call getattr\n"); | |
0e574af1 | 109 | nfs_fattr_init(fattr); |
dead28da | 110 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
111 | dprintk("NFS reply getattr: %d\n", status); |
112 | return status; | |
113 | } | |
114 | ||
115 | static int | |
116 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
117 | struct iattr *sattr) | |
118 | { | |
119 | struct inode *inode = dentry->d_inode; | |
120 | struct nfs3_sattrargs arg = { | |
121 | .fh = NFS_FH(inode), | |
122 | .sattr = sattr, | |
123 | }; | |
dead28da CL |
124 | struct rpc_message msg = { |
125 | .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], | |
126 | .rpc_argp = &arg, | |
127 | .rpc_resp = fattr, | |
128 | }; | |
1da177e4 LT |
129 | int status; |
130 | ||
131 | dprintk("NFS call setattr\n"); | |
659bfcd6 TM |
132 | if (sattr->ia_valid & ATTR_FILE) |
133 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); | |
0e574af1 | 134 | nfs_fattr_init(fattr); |
dead28da | 135 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
65e4308d TM |
136 | if (status == 0) |
137 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
138 | dprintk("NFS reply setattr: %d\n", status); |
139 | return status; | |
140 | } | |
141 | ||
142 | static int | |
143 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
144 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
145 | { | |
146 | struct nfs_fattr dir_attr; | |
147 | struct nfs3_diropargs arg = { | |
148 | .fh = NFS_FH(dir), | |
149 | .name = name->name, | |
150 | .len = name->len | |
151 | }; | |
152 | struct nfs3_diropres res = { | |
153 | .dir_attr = &dir_attr, | |
154 | .fh = fhandle, | |
155 | .fattr = fattr | |
156 | }; | |
dead28da CL |
157 | struct rpc_message msg = { |
158 | .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP], | |
159 | .rpc_argp = &arg, | |
160 | .rpc_resp = &res, | |
161 | }; | |
1da177e4 LT |
162 | int status; |
163 | ||
164 | dprintk("NFS call lookup %s\n", name->name); | |
0e574af1 TM |
165 | nfs_fattr_init(&dir_attr); |
166 | nfs_fattr_init(fattr); | |
dead28da | 167 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
81c76880 | 168 | nfs_refresh_inode(dir, &dir_attr); |
dead28da CL |
169 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { |
170 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; | |
171 | msg.rpc_argp = fhandle; | |
172 | msg.rpc_resp = fattr; | |
173 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
174 | } | |
1da177e4 | 175 | dprintk("NFS reply lookup: %d\n", status); |
1da177e4 LT |
176 | return status; |
177 | } | |
178 | ||
179 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
180 | { | |
181 | struct nfs_fattr fattr; | |
182 | struct nfs3_accessargs arg = { | |
183 | .fh = NFS_FH(inode), | |
184 | }; | |
185 | struct nfs3_accessres res = { | |
186 | .fattr = &fattr, | |
187 | }; | |
188 | struct rpc_message msg = { | |
189 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
190 | .rpc_argp = &arg, | |
191 | .rpc_resp = &res, | |
dead28da | 192 | .rpc_cred = entry->cred, |
1da177e4 LT |
193 | }; |
194 | int mode = entry->mask; | |
195 | int status; | |
196 | ||
197 | dprintk("NFS call access\n"); | |
1da177e4 LT |
198 | |
199 | if (mode & MAY_READ) | |
200 | arg.access |= NFS3_ACCESS_READ; | |
201 | if (S_ISDIR(inode->i_mode)) { | |
202 | if (mode & MAY_WRITE) | |
203 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
204 | if (mode & MAY_EXEC) | |
205 | arg.access |= NFS3_ACCESS_LOOKUP; | |
206 | } else { | |
207 | if (mode & MAY_WRITE) | |
208 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
209 | if (mode & MAY_EXEC) | |
210 | arg.access |= NFS3_ACCESS_EXECUTE; | |
211 | } | |
0e574af1 | 212 | nfs_fattr_init(&fattr); |
1da177e4 LT |
213 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
214 | nfs_refresh_inode(inode, &fattr); | |
215 | if (status == 0) { | |
216 | entry->mask = 0; | |
217 | if (res.access & NFS3_ACCESS_READ) | |
218 | entry->mask |= MAY_READ; | |
219 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
220 | entry->mask |= MAY_WRITE; | |
221 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
222 | entry->mask |= MAY_EXEC; | |
223 | } | |
224 | dprintk("NFS reply access: %d\n", status); | |
225 | return status; | |
226 | } | |
227 | ||
228 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
229 | unsigned int pgbase, unsigned int pglen) | |
230 | { | |
231 | struct nfs_fattr fattr; | |
232 | struct nfs3_readlinkargs args = { | |
233 | .fh = NFS_FH(inode), | |
234 | .pgbase = pgbase, | |
235 | .pglen = pglen, | |
236 | .pages = &page | |
237 | }; | |
dead28da CL |
238 | struct rpc_message msg = { |
239 | .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK], | |
240 | .rpc_argp = &args, | |
241 | .rpc_resp = &fattr, | |
242 | }; | |
1da177e4 LT |
243 | int status; |
244 | ||
245 | dprintk("NFS call readlink\n"); | |
0e574af1 | 246 | nfs_fattr_init(&fattr); |
dead28da | 247 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1da177e4 LT |
248 | nfs_refresh_inode(inode, &fattr); |
249 | dprintk("NFS reply readlink: %d\n", status); | |
250 | return status; | |
251 | } | |
252 | ||
0b4aae7a TM |
253 | struct nfs3_createdata { |
254 | struct rpc_message msg; | |
255 | union { | |
256 | struct nfs3_createargs create; | |
257 | struct nfs3_mkdirargs mkdir; | |
258 | struct nfs3_symlinkargs symlink; | |
259 | struct nfs3_mknodargs mknod; | |
260 | } arg; | |
261 | struct nfs3_diropres res; | |
262 | struct nfs_fh fh; | |
263 | struct nfs_fattr fattr; | |
264 | struct nfs_fattr dir_attr; | |
265 | }; | |
266 | ||
267 | static struct nfs3_createdata *nfs3_alloc_createdata(void) | |
268 | { | |
269 | struct nfs3_createdata *data; | |
270 | ||
271 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
272 | if (data != NULL) { | |
273 | data->msg.rpc_argp = &data->arg; | |
274 | data->msg.rpc_resp = &data->res; | |
275 | data->res.fh = &data->fh; | |
276 | data->res.fattr = &data->fattr; | |
277 | data->res.dir_attr = &data->dir_attr; | |
278 | nfs_fattr_init(data->res.fattr); | |
279 | nfs_fattr_init(data->res.dir_attr); | |
280 | } | |
281 | return data; | |
282 | } | |
283 | ||
284 | static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data) | |
285 | { | |
286 | int status; | |
287 | ||
288 | status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
289 | nfs_post_op_update_inode(dir, data->res.dir_attr); | |
290 | if (status == 0) | |
291 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
292 | return status; | |
293 | } | |
294 | ||
295 | static void nfs3_free_createdata(struct nfs3_createdata *data) | |
296 | { | |
297 | kfree(data); | |
298 | } | |
299 | ||
1da177e4 LT |
300 | /* |
301 | * Create a regular file. | |
1da177e4 LT |
302 | */ |
303 | static int | |
304 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 305 | int flags, struct nameidata *nd) |
1da177e4 | 306 | { |
0b4aae7a | 307 | struct nfs3_createdata *data; |
055ffbea | 308 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 309 | int status = -ENOMEM; |
1da177e4 LT |
310 | |
311 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
0b4aae7a TM |
312 | |
313 | data = nfs3_alloc_createdata(); | |
314 | if (data == NULL) | |
315 | goto out; | |
316 | ||
317 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; | |
318 | data->arg.create.fh = NFS_FH(dir); | |
319 | data->arg.create.name = dentry->d_name.name; | |
320 | data->arg.create.len = dentry->d_name.len; | |
321 | data->arg.create.sattr = sattr; | |
322 | ||
323 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; | |
1da177e4 | 324 | if (flags & O_EXCL) { |
0b4aae7a TM |
325 | data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; |
326 | data->arg.create.verifier[0] = jiffies; | |
327 | data->arg.create.verifier[1] = current->pid; | |
1da177e4 LT |
328 | } |
329 | ||
ce3b0f8d | 330 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 331 | |
0b4aae7a TM |
332 | for (;;) { |
333 | status = nfs3_do_create(dir, dentry, data); | |
1da177e4 | 334 | |
0b4aae7a TM |
335 | if (status != -ENOTSUPP) |
336 | break; | |
337 | /* If the server doesn't support the exclusive creation | |
338 | * semantics, try again with simple 'guarded' mode. */ | |
339 | switch (data->arg.create.createmode) { | |
1da177e4 | 340 | case NFS3_CREATE_EXCLUSIVE: |
0b4aae7a | 341 | data->arg.create.createmode = NFS3_CREATE_GUARDED; |
1da177e4 LT |
342 | break; |
343 | ||
344 | case NFS3_CREATE_GUARDED: | |
0b4aae7a | 345 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; |
1da177e4 LT |
346 | break; |
347 | ||
348 | case NFS3_CREATE_UNCHECKED: | |
349 | goto out; | |
350 | } | |
0b4aae7a TM |
351 | nfs_fattr_init(data->res.dir_attr); |
352 | nfs_fattr_init(data->res.fattr); | |
1da177e4 LT |
353 | } |
354 | ||
1da177e4 LT |
355 | if (status != 0) |
356 | goto out; | |
357 | ||
358 | /* When we created the file with exclusive semantics, make | |
359 | * sure we set the attributes afterwards. */ | |
0b4aae7a | 360 | if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { |
1da177e4 LT |
361 | dprintk("NFS call setattr (post-create)\n"); |
362 | ||
363 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
364 | sattr->ia_valid |= ATTR_ATIME; | |
365 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
366 | sattr->ia_valid |= ATTR_MTIME; | |
367 | ||
368 | /* Note: we could use a guarded setattr here, but I'm | |
369 | * not sure this buys us anything (and I'd have | |
370 | * to revamp the NFSv3 XDR code) */ | |
0b4aae7a TM |
371 | status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); |
372 | nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); | |
1da177e4 | 373 | dprintk("NFS reply setattr (post-create): %d\n", status); |
0b4aae7a TM |
374 | if (status != 0) |
375 | goto out; | |
1da177e4 | 376 | } |
055ffbea | 377 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
1da177e4 | 378 | out: |
0b4aae7a | 379 | nfs3_free_createdata(data); |
1da177e4 LT |
380 | dprintk("NFS reply create: %d\n", status); |
381 | return status; | |
382 | } | |
383 | ||
384 | static int | |
385 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
386 | { | |
4fdc17b2 TM |
387 | struct nfs_removeargs arg = { |
388 | .fh = NFS_FH(dir), | |
389 | .name.len = name->len, | |
390 | .name.name = name->name, | |
1da177e4 | 391 | }; |
4fdc17b2 TM |
392 | struct nfs_removeres res; |
393 | struct rpc_message msg = { | |
394 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
395 | .rpc_argp = &arg, | |
396 | .rpc_resp = &res, | |
1da177e4 LT |
397 | }; |
398 | int status; | |
399 | ||
400 | dprintk("NFS call remove %s\n", name->name); | |
4fdc17b2 | 401 | nfs_fattr_init(&res.dir_attr); |
1da177e4 | 402 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
4fdc17b2 | 403 | nfs_post_op_update_inode(dir, &res.dir_attr); |
1da177e4 LT |
404 | dprintk("NFS reply remove: %d\n", status); |
405 | return status; | |
406 | } | |
407 | ||
e4eff1a6 TM |
408 | static void |
409 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) | |
1da177e4 | 410 | { |
1da177e4 | 411 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
1da177e4 LT |
412 | } |
413 | ||
414 | static int | |
e4eff1a6 | 415 | nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 416 | { |
e4eff1a6 TM |
417 | struct nfs_removeres *res; |
418 | if (nfs3_async_handle_jukebox(task, dir)) | |
419 | return 0; | |
420 | res = task->tk_msg.rpc_resp; | |
421 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
422 | return 1; | |
1da177e4 LT |
423 | } |
424 | ||
425 | static int | |
426 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
427 | struct inode *new_dir, struct qstr *new_name) | |
428 | { | |
429 | struct nfs_fattr old_dir_attr, new_dir_attr; | |
430 | struct nfs3_renameargs arg = { | |
431 | .fromfh = NFS_FH(old_dir), | |
432 | .fromname = old_name->name, | |
433 | .fromlen = old_name->len, | |
434 | .tofh = NFS_FH(new_dir), | |
435 | .toname = new_name->name, | |
436 | .tolen = new_name->len | |
437 | }; | |
438 | struct nfs3_renameres res = { | |
439 | .fromattr = &old_dir_attr, | |
440 | .toattr = &new_dir_attr | |
441 | }; | |
dead28da CL |
442 | struct rpc_message msg = { |
443 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
444 | .rpc_argp = &arg, | |
445 | .rpc_resp = &res, | |
446 | }; | |
1da177e4 LT |
447 | int status; |
448 | ||
449 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
0e574af1 TM |
450 | nfs_fattr_init(&old_dir_attr); |
451 | nfs_fattr_init(&new_dir_attr); | |
dead28da | 452 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
decf491f TM |
453 | nfs_post_op_update_inode(old_dir, &old_dir_attr); |
454 | nfs_post_op_update_inode(new_dir, &new_dir_attr); | |
1da177e4 LT |
455 | dprintk("NFS reply rename: %d\n", status); |
456 | return status; | |
457 | } | |
458 | ||
459 | static int | |
460 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
461 | { | |
462 | struct nfs_fattr dir_attr, fattr; | |
463 | struct nfs3_linkargs arg = { | |
464 | .fromfh = NFS_FH(inode), | |
465 | .tofh = NFS_FH(dir), | |
466 | .toname = name->name, | |
467 | .tolen = name->len | |
468 | }; | |
469 | struct nfs3_linkres res = { | |
470 | .dir_attr = &dir_attr, | |
471 | .fattr = &fattr | |
472 | }; | |
dead28da CL |
473 | struct rpc_message msg = { |
474 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
475 | .rpc_argp = &arg, | |
476 | .rpc_resp = &res, | |
477 | }; | |
1da177e4 LT |
478 | int status; |
479 | ||
480 | dprintk("NFS call link %s\n", name->name); | |
0e574af1 TM |
481 | nfs_fattr_init(&dir_attr); |
482 | nfs_fattr_init(&fattr); | |
dead28da | 483 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
decf491f TM |
484 | nfs_post_op_update_inode(dir, &dir_attr); |
485 | nfs_post_op_update_inode(inode, &fattr); | |
1da177e4 LT |
486 | dprintk("NFS reply link: %d\n", status); |
487 | return status; | |
488 | } | |
489 | ||
490 | static int | |
94a6d753 CL |
491 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
492 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 493 | { |
0b4aae7a TM |
494 | struct nfs3_createdata *data; |
495 | int status = -ENOMEM; | |
1da177e4 | 496 | |
94a6d753 | 497 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 498 | return -ENAMETOOLONG; |
4f390c15 | 499 | |
94a6d753 CL |
500 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
501 | ||
0b4aae7a TM |
502 | data = nfs3_alloc_createdata(); |
503 | if (data == NULL) | |
4f390c15 | 504 | goto out; |
0b4aae7a TM |
505 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
506 | data->arg.symlink.fromfh = NFS_FH(dir); | |
507 | data->arg.symlink.fromname = dentry->d_name.name; | |
508 | data->arg.symlink.fromlen = dentry->d_name.len; | |
509 | data->arg.symlink.pages = &page; | |
510 | data->arg.symlink.pathlen = len; | |
511 | data->arg.symlink.sattr = sattr; | |
512 | ||
513 | status = nfs3_do_create(dir, dentry, data); | |
514 | ||
515 | nfs3_free_createdata(data); | |
4f390c15 | 516 | out: |
1da177e4 LT |
517 | dprintk("NFS reply symlink: %d\n", status); |
518 | return status; | |
519 | } | |
520 | ||
521 | static int | |
522 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
523 | { | |
0b4aae7a | 524 | struct nfs3_createdata *data; |
055ffbea | 525 | int mode = sattr->ia_mode; |
0b4aae7a | 526 | int status = -ENOMEM; |
1da177e4 LT |
527 | |
528 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 529 | |
ce3b0f8d | 530 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 531 | |
0b4aae7a TM |
532 | data = nfs3_alloc_createdata(); |
533 | if (data == NULL) | |
055ffbea | 534 | goto out; |
0b4aae7a TM |
535 | |
536 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
537 | data->arg.mkdir.fh = NFS_FH(dir); | |
538 | data->arg.mkdir.name = dentry->d_name.name; | |
539 | data->arg.mkdir.len = dentry->d_name.len; | |
540 | data->arg.mkdir.sattr = sattr; | |
541 | ||
542 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
543 | if (status != 0) |
544 | goto out; | |
0b4aae7a | 545 | |
055ffbea AG |
546 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
547 | out: | |
0b4aae7a | 548 | nfs3_free_createdata(data); |
1da177e4 LT |
549 | dprintk("NFS reply mkdir: %d\n", status); |
550 | return status; | |
551 | } | |
552 | ||
553 | static int | |
554 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
555 | { | |
556 | struct nfs_fattr dir_attr; | |
557 | struct nfs3_diropargs arg = { | |
558 | .fh = NFS_FH(dir), | |
559 | .name = name->name, | |
560 | .len = name->len | |
561 | }; | |
dead28da CL |
562 | struct rpc_message msg = { |
563 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
564 | .rpc_argp = &arg, | |
565 | .rpc_resp = &dir_attr, | |
566 | }; | |
1da177e4 LT |
567 | int status; |
568 | ||
569 | dprintk("NFS call rmdir %s\n", name->name); | |
0e574af1 | 570 | nfs_fattr_init(&dir_attr); |
dead28da | 571 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 572 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
573 | dprintk("NFS reply rmdir: %d\n", status); |
574 | return status; | |
575 | } | |
576 | ||
577 | /* | |
578 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
579 | * to the encode function, which installs it in the receive iovec. | |
580 | * The decode function itself doesn't perform any decoding, it just makes | |
581 | * sure the reply is syntactically correct. | |
582 | * | |
583 | * Also note that this implementation handles both plain readdir and | |
584 | * readdirplus. | |
585 | */ | |
586 | static int | |
587 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
588 | u64 cookie, struct page *page, unsigned int count, int plus) | |
589 | { | |
590 | struct inode *dir = dentry->d_inode; | |
591 | struct nfs_fattr dir_attr; | |
bc4785cd | 592 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
593 | struct nfs3_readdirargs arg = { |
594 | .fh = NFS_FH(dir), | |
595 | .cookie = cookie, | |
596 | .verf = {verf[0], verf[1]}, | |
597 | .plus = plus, | |
598 | .count = count, | |
599 | .pages = &page | |
600 | }; | |
601 | struct nfs3_readdirres res = { | |
602 | .dir_attr = &dir_attr, | |
603 | .verf = verf, | |
604 | .plus = plus | |
605 | }; | |
606 | struct rpc_message msg = { | |
607 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
608 | .rpc_argp = &arg, | |
609 | .rpc_resp = &res, | |
610 | .rpc_cred = cred | |
611 | }; | |
612 | int status; | |
613 | ||
1da177e4 LT |
614 | if (plus) |
615 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
616 | ||
617 | dprintk("NFS call readdir%s %d\n", | |
618 | plus? "plus" : "", (unsigned int) cookie); | |
619 | ||
0e574af1 | 620 | nfs_fattr_init(&dir_attr); |
1da177e4 | 621 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
622 | |
623 | nfs_invalidate_atime(dir); | |
624 | ||
1da177e4 LT |
625 | nfs_refresh_inode(dir, &dir_attr); |
626 | dprintk("NFS reply readdir: %d\n", status); | |
1da177e4 LT |
627 | return status; |
628 | } | |
629 | ||
630 | static int | |
631 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
632 | dev_t rdev) | |
633 | { | |
0b4aae7a | 634 | struct nfs3_createdata *data; |
055ffbea | 635 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 636 | int status = -ENOMEM; |
1da177e4 LT |
637 | |
638 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
639 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 640 | |
ce3b0f8d | 641 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 642 | |
0b4aae7a TM |
643 | data = nfs3_alloc_createdata(); |
644 | if (data == NULL) | |
055ffbea | 645 | goto out; |
0b4aae7a TM |
646 | |
647 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
648 | data->arg.mknod.fh = NFS_FH(dir); | |
649 | data->arg.mknod.name = dentry->d_name.name; | |
650 | data->arg.mknod.len = dentry->d_name.len; | |
651 | data->arg.mknod.sattr = sattr; | |
652 | data->arg.mknod.rdev = rdev; | |
653 | ||
654 | switch (sattr->ia_mode & S_IFMT) { | |
655 | case S_IFBLK: | |
656 | data->arg.mknod.type = NF3BLK; | |
657 | break; | |
658 | case S_IFCHR: | |
659 | data->arg.mknod.type = NF3CHR; | |
660 | break; | |
661 | case S_IFIFO: | |
662 | data->arg.mknod.type = NF3FIFO; | |
663 | break; | |
664 | case S_IFSOCK: | |
665 | data->arg.mknod.type = NF3SOCK; | |
666 | break; | |
667 | default: | |
668 | status = -EINVAL; | |
669 | goto out; | |
670 | } | |
671 | ||
672 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
673 | if (status != 0) |
674 | goto out; | |
675 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
676 | out: | |
0b4aae7a | 677 | nfs3_free_createdata(data); |
1da177e4 LT |
678 | dprintk("NFS reply mknod: %d\n", status); |
679 | return status; | |
680 | } | |
681 | ||
682 | static int | |
683 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
684 | struct nfs_fsstat *stat) | |
685 | { | |
dead28da CL |
686 | struct rpc_message msg = { |
687 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
688 | .rpc_argp = fhandle, | |
689 | .rpc_resp = stat, | |
690 | }; | |
1da177e4 LT |
691 | int status; |
692 | ||
693 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 694 | nfs_fattr_init(stat->fattr); |
dead28da | 695 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
696 | dprintk("NFS reply statfs: %d\n", status); |
697 | return status; | |
698 | } | |
699 | ||
700 | static int | |
37ca8f5c | 701 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
702 | struct nfs_fsinfo *info) |
703 | { | |
dead28da CL |
704 | struct rpc_message msg = { |
705 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
706 | .rpc_argp = fhandle, | |
707 | .rpc_resp = info, | |
708 | }; | |
1da177e4 LT |
709 | int status; |
710 | ||
711 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 712 | nfs_fattr_init(info->fattr); |
37ca8f5c | 713 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
714 | dprintk("NFS reply fsinfo: %d\n", status); |
715 | return status; | |
716 | } | |
717 | ||
37ca8f5c EK |
718 | /* |
719 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
720 | * nfs_create_server | |
721 | */ | |
722 | static int | |
723 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
724 | struct nfs_fsinfo *info) | |
725 | { | |
726 | int status; | |
727 | ||
728 | status = do_proc_fsinfo(server->client, fhandle, info); | |
729 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
730 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
731 | return status; | |
732 | } | |
733 | ||
1da177e4 LT |
734 | static int |
735 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
736 | struct nfs_pathconf *info) | |
737 | { | |
dead28da CL |
738 | struct rpc_message msg = { |
739 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
740 | .rpc_argp = fhandle, | |
741 | .rpc_resp = info, | |
742 | }; | |
1da177e4 LT |
743 | int status; |
744 | ||
745 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 746 | nfs_fattr_init(info->fattr); |
dead28da | 747 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
748 | dprintk("NFS reply pathconf: %d\n", status); |
749 | return status; | |
750 | } | |
751 | ||
ec06c096 | 752 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 753 | { |
006ea73e | 754 | if (nfs3_async_handle_jukebox(task, data->inode)) |
ec06c096 | 755 | return -EAGAIN; |
8850df99 TM |
756 | |
757 | nfs_invalidate_atime(data->inode); | |
758 | nfs_refresh_inode(data->inode, &data->fattr); | |
ec06c096 | 759 | return 0; |
1da177e4 LT |
760 | } |
761 | ||
bdc7f021 | 762 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 763 | { |
bdc7f021 | 764 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
765 | } |
766 | ||
788e7a89 | 767 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 768 | { |
006ea73e | 769 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 770 | return -EAGAIN; |
1da177e4 | 771 | if (task->tk_status >= 0) |
70ca8852 | 772 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
788e7a89 | 773 | return 0; |
1da177e4 LT |
774 | } |
775 | ||
bdc7f021 | 776 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 777 | { |
bdc7f021 | 778 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
779 | } |
780 | ||
788e7a89 | 781 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 782 | { |
006ea73e | 783 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 784 | return -EAGAIN; |
9e08a3c5 | 785 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 786 | return 0; |
1da177e4 LT |
787 | } |
788 | ||
bdc7f021 | 789 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 790 | { |
bdc7f021 | 791 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
792 | } |
793 | ||
794 | static int | |
795 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
796 | { | |
1093a60e CL |
797 | struct inode *inode = filp->f_path.dentry->d_inode; |
798 | ||
799 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
800 | } |
801 | ||
509de811 | 802 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
803 | .version = 3, /* protocol version */ |
804 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
805 | .dir_inode_ops = &nfs3_dir_inode_operations, |
806 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
807 | .getroot = nfs3_proc_get_root, |
808 | .getattr = nfs3_proc_getattr, | |
809 | .setattr = nfs3_proc_setattr, | |
810 | .lookup = nfs3_proc_lookup, | |
811 | .access = nfs3_proc_access, | |
812 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
813 | .create = nfs3_proc_create, |
814 | .remove = nfs3_proc_remove, | |
815 | .unlink_setup = nfs3_proc_unlink_setup, | |
816 | .unlink_done = nfs3_proc_unlink_done, | |
817 | .rename = nfs3_proc_rename, | |
818 | .link = nfs3_proc_link, | |
819 | .symlink = nfs3_proc_symlink, | |
820 | .mkdir = nfs3_proc_mkdir, | |
821 | .rmdir = nfs3_proc_rmdir, | |
822 | .readdir = nfs3_proc_readdir, | |
823 | .mknod = nfs3_proc_mknod, | |
824 | .statfs = nfs3_proc_statfs, | |
825 | .fsinfo = nfs3_proc_fsinfo, | |
826 | .pathconf = nfs3_proc_pathconf, | |
827 | .decode_dirent = nfs3_decode_dirent, | |
828 | .read_setup = nfs3_proc_read_setup, | |
ec06c096 | 829 | .read_done = nfs3_read_done, |
1da177e4 | 830 | .write_setup = nfs3_proc_write_setup, |
788e7a89 | 831 | .write_done = nfs3_write_done, |
1da177e4 | 832 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 833 | .commit_done = nfs3_commit_done, |
1da177e4 | 834 | .lock = nfs3_proc_lock, |
5c6a9f7d | 835 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 836 | .close_context = nfs_close_context, |
1da177e4 | 837 | }; |