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> | |
1da177e4 LT |
10 | #include <linux/errno.h> |
11 | #include <linux/string.h> | |
12 | #include <linux/sunrpc/clnt.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 LT |
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 | ||
b68d69b8 | 26 | /* A wrapper to handle the EJUKEBOX and EKEYEXPIRED error messages */ |
1da177e4 LT |
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); | |
b68d69b8 | 33 | if (res != -EJUKEBOX && res != -EKEYEXPIRED) |
1da177e4 | 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 | 45 | { |
b68d69b8 | 46 | if (task->tk_status != -EJUKEBOX && task->tk_status != -EKEYEXPIRED) |
1da177e4 | 47 | return 0; |
b68d69b8 JL |
48 | if (task->tk_status == -EJUKEBOX) |
49 | nfs_inc_stats(inode, NFSIOS_DELAY); | |
1da177e4 LT |
50 | task->tk_status = 0; |
51 | rpc_restart_call(task); | |
52 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
53 | return 1; | |
54 | } | |
55 | ||
1da177e4 | 56 | static int |
03c21733 BF |
57 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
58 | struct nfs_fsinfo *info) | |
1da177e4 | 59 | { |
dead28da CL |
60 | struct rpc_message msg = { |
61 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
62 | .rpc_argp = fhandle, | |
63 | .rpc_resp = info, | |
64 | }; | |
1da177e4 LT |
65 | int status; |
66 | ||
3110ff80 | 67 | dprintk("%s: call fsinfo\n", __func__); |
0e574af1 | 68 | nfs_fattr_init(info->fattr); |
dead28da | 69 | status = rpc_call_sync(client, &msg, 0); |
3110ff80 | 70 | dprintk("%s: reply fsinfo: %d\n", __func__, status); |
1da177e4 | 71 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { |
dead28da CL |
72 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; |
73 | msg.rpc_resp = info->fattr; | |
74 | status = rpc_call_sync(client, &msg, 0); | |
3110ff80 | 75 | dprintk("%s: reply getattr: %d\n", __func__, status); |
1da177e4 LT |
76 | } |
77 | return status; | |
78 | } | |
79 | ||
03c21733 | 80 | /* |
54ceac45 | 81 | * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb |
03c21733 BF |
82 | */ |
83 | static int | |
84 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
85 | struct nfs_fsinfo *info) | |
86 | { | |
87 | int status; | |
88 | ||
89 | status = do_proc_get_root(server->client, fhandle, info); | |
5006a76c DH |
90 | if (status && server->nfs_client->cl_rpcclient != server->client) |
91 | status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info); | |
03c21733 BF |
92 | return status; |
93 | } | |
94 | ||
1da177e4 LT |
95 | /* |
96 | * One function for each procedure in the NFS protocol. | |
97 | */ | |
98 | static int | |
99 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
100 | struct nfs_fattr *fattr) | |
101 | { | |
dead28da CL |
102 | struct rpc_message msg = { |
103 | .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], | |
104 | .rpc_argp = fhandle, | |
105 | .rpc_resp = fattr, | |
106 | }; | |
1da177e4 LT |
107 | int status; |
108 | ||
109 | dprintk("NFS call getattr\n"); | |
0e574af1 | 110 | nfs_fattr_init(fattr); |
dead28da | 111 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
112 | dprintk("NFS reply getattr: %d\n", status); |
113 | return status; | |
114 | } | |
115 | ||
116 | static int | |
117 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
118 | struct iattr *sattr) | |
119 | { | |
120 | struct inode *inode = dentry->d_inode; | |
121 | struct nfs3_sattrargs arg = { | |
122 | .fh = NFS_FH(inode), | |
123 | .sattr = sattr, | |
124 | }; | |
dead28da CL |
125 | struct rpc_message msg = { |
126 | .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], | |
127 | .rpc_argp = &arg, | |
128 | .rpc_resp = fattr, | |
129 | }; | |
1da177e4 LT |
130 | int status; |
131 | ||
132 | dprintk("NFS call setattr\n"); | |
659bfcd6 TM |
133 | if (sattr->ia_valid & ATTR_FILE) |
134 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); | |
0e574af1 | 135 | nfs_fattr_init(fattr); |
dead28da | 136 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
65e4308d TM |
137 | if (status == 0) |
138 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
139 | dprintk("NFS reply setattr: %d\n", status); |
140 | return status; | |
141 | } | |
142 | ||
143 | static int | |
144 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
145 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
146 | { | |
1da177e4 LT |
147 | struct nfs3_diropargs arg = { |
148 | .fh = NFS_FH(dir), | |
149 | .name = name->name, | |
150 | .len = name->len | |
151 | }; | |
152 | struct nfs3_diropres res = { | |
1da177e4 LT |
153 | .fh = fhandle, |
154 | .fattr = fattr | |
155 | }; | |
dead28da CL |
156 | struct rpc_message msg = { |
157 | .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP], | |
158 | .rpc_argp = &arg, | |
159 | .rpc_resp = &res, | |
160 | }; | |
1da177e4 LT |
161 | int status; |
162 | ||
163 | dprintk("NFS call lookup %s\n", name->name); | |
e1fb4d05 TM |
164 | res.dir_attr = nfs_alloc_fattr(); |
165 | if (res.dir_attr == NULL) | |
166 | return -ENOMEM; | |
167 | ||
0e574af1 | 168 | nfs_fattr_init(fattr); |
dead28da | 169 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
e1fb4d05 | 170 | nfs_refresh_inode(dir, res.dir_attr); |
dead28da CL |
171 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { |
172 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; | |
173 | msg.rpc_argp = fhandle; | |
174 | msg.rpc_resp = fattr; | |
175 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
176 | } | |
e1fb4d05 | 177 | nfs_free_fattr(res.dir_attr); |
1da177e4 | 178 | dprintk("NFS reply lookup: %d\n", status); |
1da177e4 LT |
179 | return status; |
180 | } | |
181 | ||
182 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
183 | { | |
1da177e4 LT |
184 | struct nfs3_accessargs arg = { |
185 | .fh = NFS_FH(inode), | |
186 | }; | |
c407d41a | 187 | struct nfs3_accessres res; |
1da177e4 LT |
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; | |
c407d41a | 195 | int status = -ENOMEM; |
1da177e4 LT |
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 | } | |
c407d41a TM |
212 | |
213 | res.fattr = nfs_alloc_fattr(); | |
214 | if (res.fattr == NULL) | |
215 | goto out; | |
216 | ||
1da177e4 | 217 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
c407d41a | 218 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 LT |
219 | if (status == 0) { |
220 | entry->mask = 0; | |
221 | if (res.access & NFS3_ACCESS_READ) | |
222 | entry->mask |= MAY_READ; | |
223 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
224 | entry->mask |= MAY_WRITE; | |
225 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
226 | entry->mask |= MAY_EXEC; | |
227 | } | |
c407d41a TM |
228 | nfs_free_fattr(res.fattr); |
229 | out: | |
1da177e4 LT |
230 | dprintk("NFS reply access: %d\n", status); |
231 | return status; | |
232 | } | |
233 | ||
234 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
235 | unsigned int pgbase, unsigned int pglen) | |
236 | { | |
3b14d654 | 237 | struct nfs_fattr *fattr; |
1da177e4 LT |
238 | struct nfs3_readlinkargs args = { |
239 | .fh = NFS_FH(inode), | |
240 | .pgbase = pgbase, | |
241 | .pglen = pglen, | |
242 | .pages = &page | |
243 | }; | |
dead28da CL |
244 | struct rpc_message msg = { |
245 | .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK], | |
246 | .rpc_argp = &args, | |
dead28da | 247 | }; |
3b14d654 | 248 | int status = -ENOMEM; |
1da177e4 LT |
249 | |
250 | dprintk("NFS call readlink\n"); | |
3b14d654 TM |
251 | fattr = nfs_alloc_fattr(); |
252 | if (fattr == NULL) | |
253 | goto out; | |
254 | msg.rpc_resp = fattr; | |
255 | ||
dead28da | 256 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
3b14d654 TM |
257 | nfs_refresh_inode(inode, fattr); |
258 | nfs_free_fattr(fattr); | |
259 | out: | |
1da177e4 LT |
260 | dprintk("NFS reply readlink: %d\n", status); |
261 | return status; | |
262 | } | |
263 | ||
0b4aae7a TM |
264 | struct nfs3_createdata { |
265 | struct rpc_message msg; | |
266 | union { | |
267 | struct nfs3_createargs create; | |
268 | struct nfs3_mkdirargs mkdir; | |
269 | struct nfs3_symlinkargs symlink; | |
270 | struct nfs3_mknodargs mknod; | |
271 | } arg; | |
272 | struct nfs3_diropres res; | |
273 | struct nfs_fh fh; | |
274 | struct nfs_fattr fattr; | |
275 | struct nfs_fattr dir_attr; | |
276 | }; | |
277 | ||
278 | static struct nfs3_createdata *nfs3_alloc_createdata(void) | |
279 | { | |
280 | struct nfs3_createdata *data; | |
281 | ||
282 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
283 | if (data != NULL) { | |
284 | data->msg.rpc_argp = &data->arg; | |
285 | data->msg.rpc_resp = &data->res; | |
286 | data->res.fh = &data->fh; | |
287 | data->res.fattr = &data->fattr; | |
288 | data->res.dir_attr = &data->dir_attr; | |
289 | nfs_fattr_init(data->res.fattr); | |
290 | nfs_fattr_init(data->res.dir_attr); | |
291 | } | |
292 | return data; | |
293 | } | |
294 | ||
295 | static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data) | |
296 | { | |
297 | int status; | |
298 | ||
299 | status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
300 | nfs_post_op_update_inode(dir, data->res.dir_attr); | |
301 | if (status == 0) | |
302 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
303 | return status; | |
304 | } | |
305 | ||
306 | static void nfs3_free_createdata(struct nfs3_createdata *data) | |
307 | { | |
308 | kfree(data); | |
309 | } | |
310 | ||
1da177e4 LT |
311 | /* |
312 | * Create a regular file. | |
1da177e4 LT |
313 | */ |
314 | static int | |
315 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 316 | int flags, struct nameidata *nd) |
1da177e4 | 317 | { |
0b4aae7a | 318 | struct nfs3_createdata *data; |
055ffbea | 319 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 320 | int status = -ENOMEM; |
1da177e4 LT |
321 | |
322 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
0b4aae7a TM |
323 | |
324 | data = nfs3_alloc_createdata(); | |
325 | if (data == NULL) | |
326 | goto out; | |
327 | ||
328 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; | |
329 | data->arg.create.fh = NFS_FH(dir); | |
330 | data->arg.create.name = dentry->d_name.name; | |
331 | data->arg.create.len = dentry->d_name.len; | |
332 | data->arg.create.sattr = sattr; | |
333 | ||
334 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; | |
1da177e4 | 335 | if (flags & O_EXCL) { |
0b4aae7a TM |
336 | data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; |
337 | data->arg.create.verifier[0] = jiffies; | |
338 | data->arg.create.verifier[1] = current->pid; | |
1da177e4 LT |
339 | } |
340 | ||
ce3b0f8d | 341 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 342 | |
0b4aae7a TM |
343 | for (;;) { |
344 | status = nfs3_do_create(dir, dentry, data); | |
1da177e4 | 345 | |
0b4aae7a TM |
346 | if (status != -ENOTSUPP) |
347 | break; | |
348 | /* If the server doesn't support the exclusive creation | |
349 | * semantics, try again with simple 'guarded' mode. */ | |
350 | switch (data->arg.create.createmode) { | |
1da177e4 | 351 | case NFS3_CREATE_EXCLUSIVE: |
0b4aae7a | 352 | data->arg.create.createmode = NFS3_CREATE_GUARDED; |
1da177e4 LT |
353 | break; |
354 | ||
355 | case NFS3_CREATE_GUARDED: | |
0b4aae7a | 356 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; |
1da177e4 LT |
357 | break; |
358 | ||
359 | case NFS3_CREATE_UNCHECKED: | |
360 | goto out; | |
361 | } | |
0b4aae7a TM |
362 | nfs_fattr_init(data->res.dir_attr); |
363 | nfs_fattr_init(data->res.fattr); | |
1da177e4 LT |
364 | } |
365 | ||
1da177e4 LT |
366 | if (status != 0) |
367 | goto out; | |
368 | ||
369 | /* When we created the file with exclusive semantics, make | |
370 | * sure we set the attributes afterwards. */ | |
0b4aae7a | 371 | if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { |
1da177e4 LT |
372 | dprintk("NFS call setattr (post-create)\n"); |
373 | ||
374 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
375 | sattr->ia_valid |= ATTR_ATIME; | |
376 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
377 | sattr->ia_valid |= ATTR_MTIME; | |
378 | ||
379 | /* Note: we could use a guarded setattr here, but I'm | |
380 | * not sure this buys us anything (and I'd have | |
381 | * to revamp the NFSv3 XDR code) */ | |
0b4aae7a TM |
382 | status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); |
383 | nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); | |
1da177e4 | 384 | dprintk("NFS reply setattr (post-create): %d\n", status); |
0b4aae7a TM |
385 | if (status != 0) |
386 | goto out; | |
1da177e4 | 387 | } |
055ffbea | 388 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
1da177e4 | 389 | out: |
0b4aae7a | 390 | nfs3_free_createdata(data); |
1da177e4 LT |
391 | dprintk("NFS reply create: %d\n", status); |
392 | return status; | |
393 | } | |
394 | ||
395 | static int | |
396 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
397 | { | |
4fdc17b2 TM |
398 | struct nfs_removeargs arg = { |
399 | .fh = NFS_FH(dir), | |
400 | .name.len = name->len, | |
401 | .name.name = name->name, | |
1da177e4 | 402 | }; |
4fdc17b2 TM |
403 | struct nfs_removeres res; |
404 | struct rpc_message msg = { | |
405 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
406 | .rpc_argp = &arg, | |
407 | .rpc_resp = &res, | |
1da177e4 | 408 | }; |
d346890b | 409 | int status = -ENOMEM; |
1da177e4 LT |
410 | |
411 | dprintk("NFS call remove %s\n", name->name); | |
d346890b TM |
412 | res.dir_attr = nfs_alloc_fattr(); |
413 | if (res.dir_attr == NULL) | |
414 | goto out; | |
415 | ||
1da177e4 | 416 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
d346890b TM |
417 | nfs_post_op_update_inode(dir, res.dir_attr); |
418 | nfs_free_fattr(res.dir_attr); | |
419 | out: | |
1da177e4 LT |
420 | dprintk("NFS reply remove: %d\n", status); |
421 | return status; | |
422 | } | |
423 | ||
e4eff1a6 TM |
424 | static void |
425 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) | |
1da177e4 | 426 | { |
1da177e4 | 427 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
1da177e4 LT |
428 | } |
429 | ||
430 | static int | |
e4eff1a6 | 431 | nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 432 | { |
e4eff1a6 TM |
433 | struct nfs_removeres *res; |
434 | if (nfs3_async_handle_jukebox(task, dir)) | |
435 | return 0; | |
436 | res = task->tk_msg.rpc_resp; | |
d346890b | 437 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 438 | return 1; |
1da177e4 LT |
439 | } |
440 | ||
441 | static int | |
442 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
443 | struct inode *new_dir, struct qstr *new_name) | |
444 | { | |
1da177e4 LT |
445 | struct nfs3_renameargs arg = { |
446 | .fromfh = NFS_FH(old_dir), | |
447 | .fromname = old_name->name, | |
448 | .fromlen = old_name->len, | |
449 | .tofh = NFS_FH(new_dir), | |
450 | .toname = new_name->name, | |
451 | .tolen = new_name->len | |
452 | }; | |
011fff72 | 453 | struct nfs3_renameres res; |
dead28da CL |
454 | struct rpc_message msg = { |
455 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
456 | .rpc_argp = &arg, | |
457 | .rpc_resp = &res, | |
458 | }; | |
011fff72 | 459 | int status = -ENOMEM; |
1da177e4 LT |
460 | |
461 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
011fff72 TM |
462 | |
463 | res.fromattr = nfs_alloc_fattr(); | |
464 | res.toattr = nfs_alloc_fattr(); | |
465 | if (res.fromattr == NULL || res.toattr == NULL) | |
466 | goto out; | |
467 | ||
dead28da | 468 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
011fff72 TM |
469 | nfs_post_op_update_inode(old_dir, res.fromattr); |
470 | nfs_post_op_update_inode(new_dir, res.toattr); | |
471 | out: | |
472 | nfs_free_fattr(res.toattr); | |
473 | nfs_free_fattr(res.fromattr); | |
1da177e4 LT |
474 | dprintk("NFS reply rename: %d\n", status); |
475 | return status; | |
476 | } | |
477 | ||
478 | static int | |
479 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
480 | { | |
1da177e4 LT |
481 | struct nfs3_linkargs arg = { |
482 | .fromfh = NFS_FH(inode), | |
483 | .tofh = NFS_FH(dir), | |
484 | .toname = name->name, | |
485 | .tolen = name->len | |
486 | }; | |
136f2627 | 487 | struct nfs3_linkres res; |
dead28da CL |
488 | struct rpc_message msg = { |
489 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
490 | .rpc_argp = &arg, | |
491 | .rpc_resp = &res, | |
492 | }; | |
136f2627 | 493 | int status = -ENOMEM; |
1da177e4 LT |
494 | |
495 | dprintk("NFS call link %s\n", name->name); | |
136f2627 TM |
496 | res.fattr = nfs_alloc_fattr(); |
497 | res.dir_attr = nfs_alloc_fattr(); | |
498 | if (res.fattr == NULL || res.dir_attr == NULL) | |
499 | goto out; | |
500 | ||
dead28da | 501 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
136f2627 TM |
502 | nfs_post_op_update_inode(dir, res.dir_attr); |
503 | nfs_post_op_update_inode(inode, res.fattr); | |
504 | out: | |
505 | nfs_free_fattr(res.dir_attr); | |
506 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
507 | dprintk("NFS reply link: %d\n", status); |
508 | return status; | |
509 | } | |
510 | ||
511 | static int | |
94a6d753 CL |
512 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
513 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 514 | { |
0b4aae7a TM |
515 | struct nfs3_createdata *data; |
516 | int status = -ENOMEM; | |
1da177e4 | 517 | |
94a6d753 | 518 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 519 | return -ENAMETOOLONG; |
4f390c15 | 520 | |
94a6d753 CL |
521 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
522 | ||
0b4aae7a TM |
523 | data = nfs3_alloc_createdata(); |
524 | if (data == NULL) | |
4f390c15 | 525 | goto out; |
0b4aae7a TM |
526 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
527 | data->arg.symlink.fromfh = NFS_FH(dir); | |
528 | data->arg.symlink.fromname = dentry->d_name.name; | |
529 | data->arg.symlink.fromlen = dentry->d_name.len; | |
530 | data->arg.symlink.pages = &page; | |
531 | data->arg.symlink.pathlen = len; | |
532 | data->arg.symlink.sattr = sattr; | |
533 | ||
534 | status = nfs3_do_create(dir, dentry, data); | |
535 | ||
536 | nfs3_free_createdata(data); | |
4f390c15 | 537 | out: |
1da177e4 LT |
538 | dprintk("NFS reply symlink: %d\n", status); |
539 | return status; | |
540 | } | |
541 | ||
542 | static int | |
543 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
544 | { | |
0b4aae7a | 545 | struct nfs3_createdata *data; |
055ffbea | 546 | int mode = sattr->ia_mode; |
0b4aae7a | 547 | int status = -ENOMEM; |
1da177e4 LT |
548 | |
549 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 550 | |
ce3b0f8d | 551 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 552 | |
0b4aae7a TM |
553 | data = nfs3_alloc_createdata(); |
554 | if (data == NULL) | |
055ffbea | 555 | goto out; |
0b4aae7a TM |
556 | |
557 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
558 | data->arg.mkdir.fh = NFS_FH(dir); | |
559 | data->arg.mkdir.name = dentry->d_name.name; | |
560 | data->arg.mkdir.len = dentry->d_name.len; | |
561 | data->arg.mkdir.sattr = sattr; | |
562 | ||
563 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
564 | if (status != 0) |
565 | goto out; | |
0b4aae7a | 566 | |
055ffbea AG |
567 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
568 | out: | |
0b4aae7a | 569 | nfs3_free_createdata(data); |
1da177e4 LT |
570 | dprintk("NFS reply mkdir: %d\n", status); |
571 | return status; | |
572 | } | |
573 | ||
574 | static int | |
575 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
576 | { | |
39967ddf | 577 | struct nfs_fattr *dir_attr; |
1da177e4 LT |
578 | struct nfs3_diropargs arg = { |
579 | .fh = NFS_FH(dir), | |
580 | .name = name->name, | |
581 | .len = name->len | |
582 | }; | |
dead28da CL |
583 | struct rpc_message msg = { |
584 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
585 | .rpc_argp = &arg, | |
dead28da | 586 | }; |
39967ddf | 587 | int status = -ENOMEM; |
1da177e4 LT |
588 | |
589 | dprintk("NFS call rmdir %s\n", name->name); | |
39967ddf TM |
590 | dir_attr = nfs_alloc_fattr(); |
591 | if (dir_attr == NULL) | |
592 | goto out; | |
593 | ||
594 | msg.rpc_resp = dir_attr; | |
dead28da | 595 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
39967ddf TM |
596 | nfs_post_op_update_inode(dir, dir_attr); |
597 | nfs_free_fattr(dir_attr); | |
598 | out: | |
1da177e4 LT |
599 | dprintk("NFS reply rmdir: %d\n", status); |
600 | return status; | |
601 | } | |
602 | ||
603 | /* | |
604 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
605 | * to the encode function, which installs it in the receive iovec. | |
606 | * The decode function itself doesn't perform any decoding, it just makes | |
607 | * sure the reply is syntactically correct. | |
608 | * | |
609 | * Also note that this implementation handles both plain readdir and | |
610 | * readdirplus. | |
611 | */ | |
612 | static int | |
613 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
614 | u64 cookie, struct page *page, unsigned int count, int plus) | |
615 | { | |
616 | struct inode *dir = dentry->d_inode; | |
bc4785cd | 617 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
618 | struct nfs3_readdirargs arg = { |
619 | .fh = NFS_FH(dir), | |
620 | .cookie = cookie, | |
621 | .verf = {verf[0], verf[1]}, | |
622 | .plus = plus, | |
623 | .count = count, | |
624 | .pages = &page | |
625 | }; | |
626 | struct nfs3_readdirres res = { | |
1da177e4 LT |
627 | .verf = verf, |
628 | .plus = plus | |
629 | }; | |
630 | struct rpc_message msg = { | |
631 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
632 | .rpc_argp = &arg, | |
633 | .rpc_resp = &res, | |
634 | .rpc_cred = cred | |
635 | }; | |
aa49b4cf | 636 | int status = -ENOMEM; |
1da177e4 | 637 | |
1da177e4 LT |
638 | if (plus) |
639 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
640 | ||
641 | dprintk("NFS call readdir%s %d\n", | |
642 | plus? "plus" : "", (unsigned int) cookie); | |
643 | ||
aa49b4cf TM |
644 | res.dir_attr = nfs_alloc_fattr(); |
645 | if (res.dir_attr == NULL) | |
646 | goto out; | |
647 | ||
1da177e4 | 648 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
649 | |
650 | nfs_invalidate_atime(dir); | |
aa49b4cf | 651 | nfs_refresh_inode(dir, res.dir_attr); |
c4812998 | 652 | |
aa49b4cf TM |
653 | nfs_free_fattr(res.dir_attr); |
654 | out: | |
1da177e4 | 655 | dprintk("NFS reply readdir: %d\n", status); |
1da177e4 LT |
656 | return status; |
657 | } | |
658 | ||
659 | static int | |
660 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
661 | dev_t rdev) | |
662 | { | |
0b4aae7a | 663 | struct nfs3_createdata *data; |
055ffbea | 664 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 665 | int status = -ENOMEM; |
1da177e4 LT |
666 | |
667 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
668 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 669 | |
ce3b0f8d | 670 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 671 | |
0b4aae7a TM |
672 | data = nfs3_alloc_createdata(); |
673 | if (data == NULL) | |
055ffbea | 674 | goto out; |
0b4aae7a TM |
675 | |
676 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
677 | data->arg.mknod.fh = NFS_FH(dir); | |
678 | data->arg.mknod.name = dentry->d_name.name; | |
679 | data->arg.mknod.len = dentry->d_name.len; | |
680 | data->arg.mknod.sattr = sattr; | |
681 | data->arg.mknod.rdev = rdev; | |
682 | ||
683 | switch (sattr->ia_mode & S_IFMT) { | |
684 | case S_IFBLK: | |
685 | data->arg.mknod.type = NF3BLK; | |
686 | break; | |
687 | case S_IFCHR: | |
688 | data->arg.mknod.type = NF3CHR; | |
689 | break; | |
690 | case S_IFIFO: | |
691 | data->arg.mknod.type = NF3FIFO; | |
692 | break; | |
693 | case S_IFSOCK: | |
694 | data->arg.mknod.type = NF3SOCK; | |
695 | break; | |
696 | default: | |
697 | status = -EINVAL; | |
698 | goto out; | |
699 | } | |
700 | ||
701 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
702 | if (status != 0) |
703 | goto out; | |
704 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
705 | out: | |
0b4aae7a | 706 | nfs3_free_createdata(data); |
1da177e4 LT |
707 | dprintk("NFS reply mknod: %d\n", status); |
708 | return status; | |
709 | } | |
710 | ||
711 | static int | |
712 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
713 | struct nfs_fsstat *stat) | |
714 | { | |
dead28da CL |
715 | struct rpc_message msg = { |
716 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
717 | .rpc_argp = fhandle, | |
718 | .rpc_resp = stat, | |
719 | }; | |
1da177e4 LT |
720 | int status; |
721 | ||
722 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 723 | nfs_fattr_init(stat->fattr); |
dead28da | 724 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
725 | dprintk("NFS reply statfs: %d\n", status); |
726 | return status; | |
727 | } | |
728 | ||
729 | static int | |
37ca8f5c | 730 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
731 | struct nfs_fsinfo *info) |
732 | { | |
dead28da CL |
733 | struct rpc_message msg = { |
734 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
735 | .rpc_argp = fhandle, | |
736 | .rpc_resp = info, | |
737 | }; | |
1da177e4 LT |
738 | int status; |
739 | ||
740 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 741 | nfs_fattr_init(info->fattr); |
37ca8f5c | 742 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
743 | dprintk("NFS reply fsinfo: %d\n", status); |
744 | return status; | |
745 | } | |
746 | ||
37ca8f5c EK |
747 | /* |
748 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
749 | * nfs_create_server | |
750 | */ | |
751 | static int | |
752 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
753 | struct nfs_fsinfo *info) | |
754 | { | |
755 | int status; | |
756 | ||
757 | status = do_proc_fsinfo(server->client, fhandle, info); | |
758 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
759 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
760 | return status; | |
761 | } | |
762 | ||
1da177e4 LT |
763 | static int |
764 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
765 | struct nfs_pathconf *info) | |
766 | { | |
dead28da CL |
767 | struct rpc_message msg = { |
768 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
769 | .rpc_argp = fhandle, | |
770 | .rpc_resp = info, | |
771 | }; | |
1da177e4 LT |
772 | int status; |
773 | ||
774 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 775 | nfs_fattr_init(info->fattr); |
dead28da | 776 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
777 | dprintk("NFS reply pathconf: %d\n", status); |
778 | return status; | |
779 | } | |
780 | ||
ec06c096 | 781 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 782 | { |
006ea73e | 783 | if (nfs3_async_handle_jukebox(task, data->inode)) |
ec06c096 | 784 | return -EAGAIN; |
8850df99 TM |
785 | |
786 | nfs_invalidate_atime(data->inode); | |
787 | nfs_refresh_inode(data->inode, &data->fattr); | |
ec06c096 | 788 | return 0; |
1da177e4 LT |
789 | } |
790 | ||
bdc7f021 | 791 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 792 | { |
bdc7f021 | 793 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
794 | } |
795 | ||
788e7a89 | 796 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 797 | { |
006ea73e | 798 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 799 | return -EAGAIN; |
1da177e4 | 800 | if (task->tk_status >= 0) |
70ca8852 | 801 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
788e7a89 | 802 | return 0; |
1da177e4 LT |
803 | } |
804 | ||
bdc7f021 | 805 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 806 | { |
bdc7f021 | 807 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
808 | } |
809 | ||
788e7a89 | 810 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 811 | { |
006ea73e | 812 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 813 | return -EAGAIN; |
9e08a3c5 | 814 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 815 | return 0; |
1da177e4 LT |
816 | } |
817 | ||
bdc7f021 | 818 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 819 | { |
bdc7f021 | 820 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
821 | } |
822 | ||
823 | static int | |
824 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
825 | { | |
1093a60e CL |
826 | struct inode *inode = filp->f_path.dentry->d_inode; |
827 | ||
828 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
829 | } |
830 | ||
509de811 | 831 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
832 | .version = 3, /* protocol version */ |
833 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
834 | .dir_inode_ops = &nfs3_dir_inode_operations, |
835 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
836 | .getroot = nfs3_proc_get_root, |
837 | .getattr = nfs3_proc_getattr, | |
838 | .setattr = nfs3_proc_setattr, | |
839 | .lookup = nfs3_proc_lookup, | |
840 | .access = nfs3_proc_access, | |
841 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
842 | .create = nfs3_proc_create, |
843 | .remove = nfs3_proc_remove, | |
844 | .unlink_setup = nfs3_proc_unlink_setup, | |
845 | .unlink_done = nfs3_proc_unlink_done, | |
846 | .rename = nfs3_proc_rename, | |
847 | .link = nfs3_proc_link, | |
848 | .symlink = nfs3_proc_symlink, | |
849 | .mkdir = nfs3_proc_mkdir, | |
850 | .rmdir = nfs3_proc_rmdir, | |
851 | .readdir = nfs3_proc_readdir, | |
852 | .mknod = nfs3_proc_mknod, | |
853 | .statfs = nfs3_proc_statfs, | |
854 | .fsinfo = nfs3_proc_fsinfo, | |
855 | .pathconf = nfs3_proc_pathconf, | |
856 | .decode_dirent = nfs3_decode_dirent, | |
857 | .read_setup = nfs3_proc_read_setup, | |
ec06c096 | 858 | .read_done = nfs3_read_done, |
1da177e4 | 859 | .write_setup = nfs3_proc_write_setup, |
788e7a89 | 860 | .write_done = nfs3_write_done, |
1da177e4 | 861 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 862 | .commit_done = nfs3_commit_done, |
1da177e4 | 863 | .lock = nfs3_proc_lock, |
5c6a9f7d | 864 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 865 | .close_context = nfs_close_context, |
1da177e4 | 866 | }; |