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