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> |
d310310c | 20 | #include <linux/freezer.h> |
1da177e4 | 21 | |
006ea73e | 22 | #include "iostat.h" |
f7b422b1 | 23 | #include "internal.h" |
006ea73e | 24 | |
1da177e4 LT |
25 | #define NFSDBG_FACILITY NFSDBG_PROC |
26 | ||
b68d69b8 | 27 | /* A wrapper to handle the EJUKEBOX and EKEYEXPIRED error messages */ |
1da177e4 LT |
28 | static int |
29 | nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) | |
30 | { | |
1da177e4 | 31 | int res; |
1da177e4 LT |
32 | do { |
33 | res = rpc_call_sync(clnt, msg, flags); | |
b68d69b8 | 34 | if (res != -EJUKEBOX && res != -EKEYEXPIRED) |
1da177e4 | 35 | break; |
d310310c | 36 | freezable_schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME); |
1da177e4 | 37 | res = -ERESTARTSYS; |
150030b7 | 38 | } while (!fatal_signal_pending(current)); |
1da177e4 LT |
39 | return res; |
40 | } | |
41 | ||
dead28da | 42 | #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags) |
1da177e4 LT |
43 | |
44 | static int | |
006ea73e | 45 | nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode) |
1da177e4 | 46 | { |
b68d69b8 | 47 | if (task->tk_status != -EJUKEBOX && task->tk_status != -EKEYEXPIRED) |
1da177e4 | 48 | return 0; |
b68d69b8 JL |
49 | if (task->tk_status == -EJUKEBOX) |
50 | nfs_inc_stats(inode, NFSIOS_DELAY); | |
1da177e4 LT |
51 | task->tk_status = 0; |
52 | rpc_restart_call(task); | |
53 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
54 | return 1; | |
55 | } | |
56 | ||
1da177e4 | 57 | static int |
03c21733 BF |
58 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
59 | struct nfs_fsinfo *info) | |
1da177e4 | 60 | { |
dead28da CL |
61 | struct rpc_message msg = { |
62 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
63 | .rpc_argp = fhandle, | |
64 | .rpc_resp = info, | |
65 | }; | |
1da177e4 LT |
66 | int status; |
67 | ||
3110ff80 | 68 | dprintk("%s: call fsinfo\n", __func__); |
0e574af1 | 69 | nfs_fattr_init(info->fattr); |
dead28da | 70 | status = rpc_call_sync(client, &msg, 0); |
3110ff80 | 71 | dprintk("%s: reply fsinfo: %d\n", __func__, status); |
1da177e4 | 72 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { |
dead28da CL |
73 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; |
74 | msg.rpc_resp = info->fattr; | |
75 | status = rpc_call_sync(client, &msg, 0); | |
3110ff80 | 76 | dprintk("%s: reply getattr: %d\n", __func__, status); |
1da177e4 LT |
77 | } |
78 | return status; | |
79 | } | |
80 | ||
03c21733 | 81 | /* |
54ceac45 | 82 | * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb |
03c21733 BF |
83 | */ |
84 | static int | |
85 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
86 | struct nfs_fsinfo *info) | |
87 | { | |
88 | int status; | |
89 | ||
90 | status = do_proc_get_root(server->client, fhandle, info); | |
5006a76c DH |
91 | if (status && server->nfs_client->cl_rpcclient != server->client) |
92 | status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info); | |
03c21733 BF |
93 | return status; |
94 | } | |
95 | ||
1da177e4 LT |
96 | /* |
97 | * One function for each procedure in the NFS protocol. | |
98 | */ | |
99 | static int | |
100 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
101 | struct nfs_fattr *fattr) | |
102 | { | |
dead28da CL |
103 | struct rpc_message msg = { |
104 | .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], | |
105 | .rpc_argp = fhandle, | |
106 | .rpc_resp = fattr, | |
107 | }; | |
1da177e4 LT |
108 | int status; |
109 | ||
110 | dprintk("NFS call getattr\n"); | |
0e574af1 | 111 | nfs_fattr_init(fattr); |
dead28da | 112 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
113 | dprintk("NFS reply getattr: %d\n", status); |
114 | return status; | |
115 | } | |
116 | ||
117 | static int | |
118 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
119 | struct iattr *sattr) | |
120 | { | |
121 | struct inode *inode = dentry->d_inode; | |
122 | struct nfs3_sattrargs arg = { | |
123 | .fh = NFS_FH(inode), | |
124 | .sattr = sattr, | |
125 | }; | |
dead28da CL |
126 | struct rpc_message msg = { |
127 | .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], | |
128 | .rpc_argp = &arg, | |
129 | .rpc_resp = fattr, | |
130 | }; | |
1da177e4 LT |
131 | int status; |
132 | ||
133 | dprintk("NFS call setattr\n"); | |
659bfcd6 TM |
134 | if (sattr->ia_valid & ATTR_FILE) |
135 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); | |
0e574af1 | 136 | nfs_fattr_init(fattr); |
dead28da | 137 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
65e4308d TM |
138 | if (status == 0) |
139 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
140 | dprintk("NFS reply setattr: %d\n", status); |
141 | return status; | |
142 | } | |
143 | ||
144 | static int | |
80a16b21 | 145 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, |
1da177e4 LT |
146 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) |
147 | { | |
1da177e4 LT |
148 | struct nfs3_diropargs arg = { |
149 | .fh = NFS_FH(dir), | |
150 | .name = name->name, | |
151 | .len = name->len | |
152 | }; | |
153 | struct nfs3_diropres res = { | |
1da177e4 LT |
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); | |
e1fb4d05 TM |
165 | res.dir_attr = nfs_alloc_fattr(); |
166 | if (res.dir_attr == NULL) | |
167 | return -ENOMEM; | |
168 | ||
0e574af1 | 169 | nfs_fattr_init(fattr); |
dead28da | 170 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
e1fb4d05 | 171 | nfs_refresh_inode(dir, res.dir_attr); |
dead28da CL |
172 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { |
173 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; | |
174 | msg.rpc_argp = fhandle; | |
175 | msg.rpc_resp = fattr; | |
176 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
177 | } | |
e1fb4d05 | 178 | nfs_free_fattr(res.dir_attr); |
1da177e4 | 179 | dprintk("NFS reply lookup: %d\n", status); |
1da177e4 LT |
180 | return status; |
181 | } | |
182 | ||
183 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
184 | { | |
1da177e4 LT |
185 | struct nfs3_accessargs arg = { |
186 | .fh = NFS_FH(inode), | |
187 | }; | |
c407d41a | 188 | struct nfs3_accessres res; |
1da177e4 LT |
189 | struct rpc_message msg = { |
190 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
191 | .rpc_argp = &arg, | |
192 | .rpc_resp = &res, | |
dead28da | 193 | .rpc_cred = entry->cred, |
1da177e4 LT |
194 | }; |
195 | int mode = entry->mask; | |
c407d41a | 196 | int status = -ENOMEM; |
1da177e4 LT |
197 | |
198 | dprintk("NFS call access\n"); | |
1da177e4 LT |
199 | |
200 | if (mode & MAY_READ) | |
201 | arg.access |= NFS3_ACCESS_READ; | |
202 | if (S_ISDIR(inode->i_mode)) { | |
203 | if (mode & MAY_WRITE) | |
204 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
205 | if (mode & MAY_EXEC) | |
206 | arg.access |= NFS3_ACCESS_LOOKUP; | |
207 | } else { | |
208 | if (mode & MAY_WRITE) | |
209 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
210 | if (mode & MAY_EXEC) | |
211 | arg.access |= NFS3_ACCESS_EXECUTE; | |
212 | } | |
c407d41a TM |
213 | |
214 | res.fattr = nfs_alloc_fattr(); | |
215 | if (res.fattr == NULL) | |
216 | goto out; | |
217 | ||
1da177e4 | 218 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
c407d41a | 219 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 LT |
220 | if (status == 0) { |
221 | entry->mask = 0; | |
222 | if (res.access & NFS3_ACCESS_READ) | |
223 | entry->mask |= MAY_READ; | |
224 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
225 | entry->mask |= MAY_WRITE; | |
226 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
227 | entry->mask |= MAY_EXEC; | |
228 | } | |
c407d41a TM |
229 | nfs_free_fattr(res.fattr); |
230 | out: | |
1da177e4 LT |
231 | dprintk("NFS reply access: %d\n", status); |
232 | return status; | |
233 | } | |
234 | ||
235 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
236 | unsigned int pgbase, unsigned int pglen) | |
237 | { | |
3b14d654 | 238 | struct nfs_fattr *fattr; |
1da177e4 LT |
239 | struct nfs3_readlinkargs args = { |
240 | .fh = NFS_FH(inode), | |
241 | .pgbase = pgbase, | |
242 | .pglen = pglen, | |
243 | .pages = &page | |
244 | }; | |
dead28da CL |
245 | struct rpc_message msg = { |
246 | .rpc_proc = &nfs3_procedures[NFS3PROC_READLINK], | |
247 | .rpc_argp = &args, | |
dead28da | 248 | }; |
3b14d654 | 249 | int status = -ENOMEM; |
1da177e4 LT |
250 | |
251 | dprintk("NFS call readlink\n"); | |
3b14d654 TM |
252 | fattr = nfs_alloc_fattr(); |
253 | if (fattr == NULL) | |
254 | goto out; | |
255 | msg.rpc_resp = fattr; | |
256 | ||
dead28da | 257 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
3b14d654 TM |
258 | nfs_refresh_inode(inode, fattr); |
259 | nfs_free_fattr(fattr); | |
260 | out: | |
1da177e4 LT |
261 | dprintk("NFS reply readlink: %d\n", status); |
262 | return status; | |
263 | } | |
264 | ||
0b4aae7a TM |
265 | struct nfs3_createdata { |
266 | struct rpc_message msg; | |
267 | union { | |
268 | struct nfs3_createargs create; | |
269 | struct nfs3_mkdirargs mkdir; | |
270 | struct nfs3_symlinkargs symlink; | |
271 | struct nfs3_mknodargs mknod; | |
272 | } arg; | |
273 | struct nfs3_diropres res; | |
274 | struct nfs_fh fh; | |
275 | struct nfs_fattr fattr; | |
276 | struct nfs_fattr dir_attr; | |
277 | }; | |
278 | ||
279 | static struct nfs3_createdata *nfs3_alloc_createdata(void) | |
280 | { | |
281 | struct nfs3_createdata *data; | |
282 | ||
283 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
284 | if (data != NULL) { | |
285 | data->msg.rpc_argp = &data->arg; | |
286 | data->msg.rpc_resp = &data->res; | |
287 | data->res.fh = &data->fh; | |
288 | data->res.fattr = &data->fattr; | |
289 | data->res.dir_attr = &data->dir_attr; | |
290 | nfs_fattr_init(data->res.fattr); | |
291 | nfs_fattr_init(data->res.dir_attr); | |
292 | } | |
293 | return data; | |
294 | } | |
295 | ||
296 | static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data) | |
297 | { | |
298 | int status; | |
299 | ||
300 | status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
301 | nfs_post_op_update_inode(dir, data->res.dir_attr); | |
302 | if (status == 0) | |
303 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
304 | return status; | |
305 | } | |
306 | ||
307 | static void nfs3_free_createdata(struct nfs3_createdata *data) | |
308 | { | |
309 | kfree(data); | |
310 | } | |
311 | ||
1da177e4 LT |
312 | /* |
313 | * Create a regular file. | |
1da177e4 LT |
314 | */ |
315 | static int | |
316 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
8867fe58 | 317 | int flags) |
1da177e4 | 318 | { |
0b4aae7a | 319 | struct nfs3_createdata *data; |
d3fb6120 | 320 | umode_t mode = sattr->ia_mode; |
0b4aae7a | 321 | int status = -ENOMEM; |
1da177e4 LT |
322 | |
323 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
0b4aae7a TM |
324 | |
325 | data = nfs3_alloc_createdata(); | |
326 | if (data == NULL) | |
327 | goto out; | |
328 | ||
329 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; | |
330 | data->arg.create.fh = NFS_FH(dir); | |
331 | data->arg.create.name = dentry->d_name.name; | |
332 | data->arg.create.len = dentry->d_name.len; | |
333 | data->arg.create.sattr = sattr; | |
334 | ||
335 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; | |
1da177e4 | 336 | if (flags & O_EXCL) { |
0b4aae7a TM |
337 | data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; |
338 | data->arg.create.verifier[0] = jiffies; | |
339 | data->arg.create.verifier[1] = current->pid; | |
1da177e4 LT |
340 | } |
341 | ||
ce3b0f8d | 342 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 343 | |
0b4aae7a TM |
344 | for (;;) { |
345 | status = nfs3_do_create(dir, dentry, data); | |
1da177e4 | 346 | |
0b4aae7a TM |
347 | if (status != -ENOTSUPP) |
348 | break; | |
349 | /* If the server doesn't support the exclusive creation | |
350 | * semantics, try again with simple 'guarded' mode. */ | |
351 | switch (data->arg.create.createmode) { | |
1da177e4 | 352 | case NFS3_CREATE_EXCLUSIVE: |
0b4aae7a | 353 | data->arg.create.createmode = NFS3_CREATE_GUARDED; |
1da177e4 LT |
354 | break; |
355 | ||
356 | case NFS3_CREATE_GUARDED: | |
0b4aae7a | 357 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; |
1da177e4 LT |
358 | break; |
359 | ||
360 | case NFS3_CREATE_UNCHECKED: | |
361 | goto out; | |
362 | } | |
0b4aae7a TM |
363 | nfs_fattr_init(data->res.dir_attr); |
364 | nfs_fattr_init(data->res.fattr); | |
1da177e4 LT |
365 | } |
366 | ||
1da177e4 LT |
367 | if (status != 0) |
368 | goto out; | |
369 | ||
370 | /* When we created the file with exclusive semantics, make | |
371 | * sure we set the attributes afterwards. */ | |
0b4aae7a | 372 | if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { |
1da177e4 LT |
373 | dprintk("NFS call setattr (post-create)\n"); |
374 | ||
375 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
376 | sattr->ia_valid |= ATTR_ATIME; | |
377 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
378 | sattr->ia_valid |= ATTR_MTIME; | |
379 | ||
380 | /* Note: we could use a guarded setattr here, but I'm | |
381 | * not sure this buys us anything (and I'd have | |
382 | * to revamp the NFSv3 XDR code) */ | |
0b4aae7a TM |
383 | status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); |
384 | nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); | |
1da177e4 | 385 | dprintk("NFS reply setattr (post-create): %d\n", status); |
0b4aae7a TM |
386 | if (status != 0) |
387 | goto out; | |
1da177e4 | 388 | } |
055ffbea | 389 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
1da177e4 | 390 | out: |
0b4aae7a | 391 | nfs3_free_createdata(data); |
1da177e4 LT |
392 | dprintk("NFS reply create: %d\n", status); |
393 | return status; | |
394 | } | |
395 | ||
396 | static int | |
397 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
398 | { | |
4fdc17b2 TM |
399 | struct nfs_removeargs arg = { |
400 | .fh = NFS_FH(dir), | |
26fe5750 | 401 | .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 | ||
34e137cc BS |
430 | static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) |
431 | { | |
432 | rpc_call_start(task); | |
433 | } | |
434 | ||
1da177e4 | 435 | static int |
e4eff1a6 | 436 | nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 437 | { |
e4eff1a6 TM |
438 | struct nfs_removeres *res; |
439 | if (nfs3_async_handle_jukebox(task, dir)) | |
440 | return 0; | |
441 | res = task->tk_msg.rpc_resp; | |
d346890b | 442 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 443 | return 1; |
1da177e4 LT |
444 | } |
445 | ||
d3d4152a JL |
446 | static void |
447 | nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) | |
448 | { | |
449 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; | |
450 | } | |
451 | ||
c6bfa1a1 BS |
452 | static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) |
453 | { | |
454 | rpc_call_start(task); | |
455 | } | |
456 | ||
d3d4152a JL |
457 | static int |
458 | nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
459 | struct inode *new_dir) | |
460 | { | |
461 | struct nfs_renameres *res; | |
462 | ||
463 | if (nfs3_async_handle_jukebox(task, old_dir)) | |
464 | return 0; | |
465 | res = task->tk_msg.rpc_resp; | |
466 | ||
467 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
468 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
469 | return 1; | |
470 | } | |
471 | ||
1da177e4 LT |
472 | static int |
473 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
474 | struct inode *new_dir, struct qstr *new_name) | |
475 | { | |
920769f0 JL |
476 | struct nfs_renameargs arg = { |
477 | .old_dir = NFS_FH(old_dir), | |
478 | .old_name = old_name, | |
479 | .new_dir = NFS_FH(new_dir), | |
480 | .new_name = new_name, | |
1da177e4 | 481 | }; |
e8582a8b | 482 | struct nfs_renameres res; |
dead28da CL |
483 | struct rpc_message msg = { |
484 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
485 | .rpc_argp = &arg, | |
486 | .rpc_resp = &res, | |
487 | }; | |
011fff72 | 488 | int status = -ENOMEM; |
1da177e4 LT |
489 | |
490 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
011fff72 | 491 | |
e8582a8b JL |
492 | res.old_fattr = nfs_alloc_fattr(); |
493 | res.new_fattr = nfs_alloc_fattr(); | |
494 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
011fff72 TM |
495 | goto out; |
496 | ||
dead28da | 497 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
e8582a8b JL |
498 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
499 | nfs_post_op_update_inode(new_dir, res.new_fattr); | |
011fff72 | 500 | out: |
e8582a8b JL |
501 | nfs_free_fattr(res.old_fattr); |
502 | nfs_free_fattr(res.new_fattr); | |
1da177e4 LT |
503 | dprintk("NFS reply rename: %d\n", status); |
504 | return status; | |
505 | } | |
506 | ||
507 | static int | |
508 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
509 | { | |
1da177e4 LT |
510 | struct nfs3_linkargs arg = { |
511 | .fromfh = NFS_FH(inode), | |
512 | .tofh = NFS_FH(dir), | |
513 | .toname = name->name, | |
514 | .tolen = name->len | |
515 | }; | |
136f2627 | 516 | struct nfs3_linkres res; |
dead28da CL |
517 | struct rpc_message msg = { |
518 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
519 | .rpc_argp = &arg, | |
520 | .rpc_resp = &res, | |
521 | }; | |
136f2627 | 522 | int status = -ENOMEM; |
1da177e4 LT |
523 | |
524 | dprintk("NFS call link %s\n", name->name); | |
136f2627 TM |
525 | res.fattr = nfs_alloc_fattr(); |
526 | res.dir_attr = nfs_alloc_fattr(); | |
527 | if (res.fattr == NULL || res.dir_attr == NULL) | |
528 | goto out; | |
529 | ||
dead28da | 530 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
136f2627 TM |
531 | nfs_post_op_update_inode(dir, res.dir_attr); |
532 | nfs_post_op_update_inode(inode, res.fattr); | |
533 | out: | |
534 | nfs_free_fattr(res.dir_attr); | |
535 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
536 | dprintk("NFS reply link: %d\n", status); |
537 | return status; | |
538 | } | |
539 | ||
540 | static int | |
94a6d753 CL |
541 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
542 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 543 | { |
0b4aae7a TM |
544 | struct nfs3_createdata *data; |
545 | int status = -ENOMEM; | |
1da177e4 | 546 | |
94a6d753 | 547 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 548 | return -ENAMETOOLONG; |
4f390c15 | 549 | |
94a6d753 CL |
550 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
551 | ||
0b4aae7a TM |
552 | data = nfs3_alloc_createdata(); |
553 | if (data == NULL) | |
4f390c15 | 554 | goto out; |
0b4aae7a TM |
555 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
556 | data->arg.symlink.fromfh = NFS_FH(dir); | |
557 | data->arg.symlink.fromname = dentry->d_name.name; | |
558 | data->arg.symlink.fromlen = dentry->d_name.len; | |
559 | data->arg.symlink.pages = &page; | |
560 | data->arg.symlink.pathlen = len; | |
561 | data->arg.symlink.sattr = sattr; | |
562 | ||
563 | status = nfs3_do_create(dir, dentry, data); | |
564 | ||
565 | nfs3_free_createdata(data); | |
4f390c15 | 566 | out: |
1da177e4 LT |
567 | dprintk("NFS reply symlink: %d\n", status); |
568 | return status; | |
569 | } | |
570 | ||
571 | static int | |
572 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
573 | { | |
0b4aae7a | 574 | struct nfs3_createdata *data; |
d3fb6120 | 575 | umode_t mode = sattr->ia_mode; |
0b4aae7a | 576 | int status = -ENOMEM; |
1da177e4 LT |
577 | |
578 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 579 | |
ce3b0f8d | 580 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 581 | |
0b4aae7a TM |
582 | data = nfs3_alloc_createdata(); |
583 | if (data == NULL) | |
055ffbea | 584 | goto out; |
0b4aae7a TM |
585 | |
586 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
587 | data->arg.mkdir.fh = NFS_FH(dir); | |
588 | data->arg.mkdir.name = dentry->d_name.name; | |
589 | data->arg.mkdir.len = dentry->d_name.len; | |
590 | data->arg.mkdir.sattr = sattr; | |
591 | ||
592 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
593 | if (status != 0) |
594 | goto out; | |
0b4aae7a | 595 | |
055ffbea AG |
596 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
597 | out: | |
0b4aae7a | 598 | nfs3_free_createdata(data); |
1da177e4 LT |
599 | dprintk("NFS reply mkdir: %d\n", status); |
600 | return status; | |
601 | } | |
602 | ||
603 | static int | |
604 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
605 | { | |
39967ddf | 606 | struct nfs_fattr *dir_attr; |
1da177e4 LT |
607 | struct nfs3_diropargs arg = { |
608 | .fh = NFS_FH(dir), | |
609 | .name = name->name, | |
610 | .len = name->len | |
611 | }; | |
dead28da CL |
612 | struct rpc_message msg = { |
613 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
614 | .rpc_argp = &arg, | |
dead28da | 615 | }; |
39967ddf | 616 | int status = -ENOMEM; |
1da177e4 LT |
617 | |
618 | dprintk("NFS call rmdir %s\n", name->name); | |
39967ddf TM |
619 | dir_attr = nfs_alloc_fattr(); |
620 | if (dir_attr == NULL) | |
621 | goto out; | |
622 | ||
623 | msg.rpc_resp = dir_attr; | |
dead28da | 624 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
39967ddf TM |
625 | nfs_post_op_update_inode(dir, dir_attr); |
626 | nfs_free_fattr(dir_attr); | |
627 | out: | |
1da177e4 LT |
628 | dprintk("NFS reply rmdir: %d\n", status); |
629 | return status; | |
630 | } | |
631 | ||
632 | /* | |
633 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
634 | * to the encode function, which installs it in the receive iovec. | |
635 | * The decode function itself doesn't perform any decoding, it just makes | |
636 | * sure the reply is syntactically correct. | |
637 | * | |
638 | * Also note that this implementation handles both plain readdir and | |
639 | * readdirplus. | |
640 | */ | |
641 | static int | |
642 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 643 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
644 | { |
645 | struct inode *dir = dentry->d_inode; | |
bc4785cd | 646 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
647 | struct nfs3_readdirargs arg = { |
648 | .fh = NFS_FH(dir), | |
649 | .cookie = cookie, | |
650 | .verf = {verf[0], verf[1]}, | |
651 | .plus = plus, | |
652 | .count = count, | |
56e4ebf8 | 653 | .pages = pages |
1da177e4 LT |
654 | }; |
655 | struct nfs3_readdirres res = { | |
1da177e4 LT |
656 | .verf = verf, |
657 | .plus = plus | |
658 | }; | |
659 | struct rpc_message msg = { | |
660 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
661 | .rpc_argp = &arg, | |
662 | .rpc_resp = &res, | |
663 | .rpc_cred = cred | |
664 | }; | |
aa49b4cf | 665 | int status = -ENOMEM; |
1da177e4 | 666 | |
1da177e4 LT |
667 | if (plus) |
668 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
669 | ||
670 | dprintk("NFS call readdir%s %d\n", | |
671 | plus? "plus" : "", (unsigned int) cookie); | |
672 | ||
aa49b4cf TM |
673 | res.dir_attr = nfs_alloc_fattr(); |
674 | if (res.dir_attr == NULL) | |
675 | goto out; | |
676 | ||
1da177e4 | 677 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
678 | |
679 | nfs_invalidate_atime(dir); | |
aa49b4cf | 680 | nfs_refresh_inode(dir, res.dir_attr); |
c4812998 | 681 | |
aa49b4cf TM |
682 | nfs_free_fattr(res.dir_attr); |
683 | out: | |
d141d974 CL |
684 | dprintk("NFS reply readdir%s: %d\n", |
685 | plus? "plus" : "", status); | |
1da177e4 LT |
686 | return status; |
687 | } | |
688 | ||
689 | static int | |
690 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
691 | dev_t rdev) | |
692 | { | |
0b4aae7a | 693 | struct nfs3_createdata *data; |
d3fb6120 | 694 | umode_t mode = sattr->ia_mode; |
0b4aae7a | 695 | int status = -ENOMEM; |
1da177e4 LT |
696 | |
697 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
698 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 699 | |
ce3b0f8d | 700 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 701 | |
0b4aae7a TM |
702 | data = nfs3_alloc_createdata(); |
703 | if (data == NULL) | |
055ffbea | 704 | goto out; |
0b4aae7a TM |
705 | |
706 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
707 | data->arg.mknod.fh = NFS_FH(dir); | |
708 | data->arg.mknod.name = dentry->d_name.name; | |
709 | data->arg.mknod.len = dentry->d_name.len; | |
710 | data->arg.mknod.sattr = sattr; | |
711 | data->arg.mknod.rdev = rdev; | |
712 | ||
713 | switch (sattr->ia_mode & S_IFMT) { | |
714 | case S_IFBLK: | |
715 | data->arg.mknod.type = NF3BLK; | |
716 | break; | |
717 | case S_IFCHR: | |
718 | data->arg.mknod.type = NF3CHR; | |
719 | break; | |
720 | case S_IFIFO: | |
721 | data->arg.mknod.type = NF3FIFO; | |
722 | break; | |
723 | case S_IFSOCK: | |
724 | data->arg.mknod.type = NF3SOCK; | |
725 | break; | |
726 | default: | |
727 | status = -EINVAL; | |
728 | goto out; | |
729 | } | |
730 | ||
731 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
732 | if (status != 0) |
733 | goto out; | |
734 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
735 | out: | |
0b4aae7a | 736 | nfs3_free_createdata(data); |
1da177e4 LT |
737 | dprintk("NFS reply mknod: %d\n", status); |
738 | return status; | |
739 | } | |
740 | ||
741 | static int | |
742 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
743 | struct nfs_fsstat *stat) | |
744 | { | |
dead28da CL |
745 | struct rpc_message msg = { |
746 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
747 | .rpc_argp = fhandle, | |
748 | .rpc_resp = stat, | |
749 | }; | |
1da177e4 LT |
750 | int status; |
751 | ||
752 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 753 | nfs_fattr_init(stat->fattr); |
dead28da | 754 | status = rpc_call_sync(server->client, &msg, 0); |
d141d974 | 755 | dprintk("NFS reply fsstat: %d\n", status); |
1da177e4 LT |
756 | return status; |
757 | } | |
758 | ||
759 | static int | |
37ca8f5c | 760 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
761 | struct nfs_fsinfo *info) |
762 | { | |
dead28da CL |
763 | struct rpc_message msg = { |
764 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
765 | .rpc_argp = fhandle, | |
766 | .rpc_resp = info, | |
767 | }; | |
1da177e4 LT |
768 | int status; |
769 | ||
770 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 771 | nfs_fattr_init(info->fattr); |
37ca8f5c | 772 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
773 | dprintk("NFS reply fsinfo: %d\n", status); |
774 | return status; | |
775 | } | |
776 | ||
37ca8f5c EK |
777 | /* |
778 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
779 | * nfs_create_server | |
780 | */ | |
781 | static int | |
782 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
783 | struct nfs_fsinfo *info) | |
784 | { | |
785 | int status; | |
786 | ||
787 | status = do_proc_fsinfo(server->client, fhandle, info); | |
788 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
789 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
790 | return status; | |
791 | } | |
792 | ||
1da177e4 LT |
793 | static int |
794 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
795 | struct nfs_pathconf *info) | |
796 | { | |
dead28da CL |
797 | struct rpc_message msg = { |
798 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
799 | .rpc_argp = fhandle, | |
800 | .rpc_resp = info, | |
801 | }; | |
1da177e4 LT |
802 | int status; |
803 | ||
804 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 805 | nfs_fattr_init(info->fattr); |
dead28da | 806 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
807 | dprintk("NFS reply pathconf: %d\n", status); |
808 | return status; | |
809 | } | |
810 | ||
ec06c096 | 811 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 812 | { |
cd841605 FI |
813 | struct inode *inode = data->header->inode; |
814 | ||
815 | if (nfs3_async_handle_jukebox(task, inode)) | |
ec06c096 | 816 | return -EAGAIN; |
8850df99 | 817 | |
cd841605 FI |
818 | nfs_invalidate_atime(inode); |
819 | nfs_refresh_inode(inode, &data->fattr); | |
ec06c096 | 820 | return 0; |
1da177e4 LT |
821 | } |
822 | ||
bdc7f021 | 823 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 824 | { |
bdc7f021 | 825 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
826 | } |
827 | ||
ea7c3303 BS |
828 | static void nfs3_proc_read_rpc_prepare(struct rpc_task *task, struct nfs_read_data *data) |
829 | { | |
830 | rpc_call_start(task); | |
831 | } | |
832 | ||
788e7a89 | 833 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 834 | { |
cd841605 FI |
835 | struct inode *inode = data->header->inode; |
836 | ||
837 | if (nfs3_async_handle_jukebox(task, inode)) | |
788e7a89 | 838 | return -EAGAIN; |
1da177e4 | 839 | if (task->tk_status >= 0) |
cd841605 | 840 | nfs_post_op_update_inode_force_wcc(inode, data->res.fattr); |
788e7a89 | 841 | return 0; |
1da177e4 LT |
842 | } |
843 | ||
bdc7f021 | 844 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 845 | { |
bdc7f021 | 846 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
847 | } |
848 | ||
c6cb80d0 BS |
849 | static void nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
850 | { | |
851 | rpc_call_start(task); | |
852 | } | |
853 | ||
0b7c0153 FI |
854 | static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) |
855 | { | |
856 | rpc_call_start(task); | |
857 | } | |
858 | ||
859 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data) | |
1da177e4 | 860 | { |
006ea73e | 861 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 862 | return -EAGAIN; |
9e08a3c5 | 863 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 864 | return 0; |
1da177e4 LT |
865 | } |
866 | ||
0b7c0153 | 867 | static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg) |
1da177e4 | 868 | { |
bdc7f021 | 869 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
870 | } |
871 | ||
872 | static int | |
873 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
874 | { | |
1093a60e CL |
875 | struct inode *inode = filp->f_path.dentry->d_inode; |
876 | ||
877 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
878 | } |
879 | ||
509de811 | 880 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
881 | .version = 3, /* protocol version */ |
882 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
883 | .dir_inode_ops = &nfs3_dir_inode_operations, |
884 | .file_inode_ops = &nfs3_file_inode_operations, | |
1788ea6e | 885 | .file_ops = &nfs_file_operations, |
1da177e4 | 886 | .getroot = nfs3_proc_get_root, |
281cad46 | 887 | .submount = nfs_submount, |
1da177e4 LT |
888 | .getattr = nfs3_proc_getattr, |
889 | .setattr = nfs3_proc_setattr, | |
890 | .lookup = nfs3_proc_lookup, | |
891 | .access = nfs3_proc_access, | |
892 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
893 | .create = nfs3_proc_create, |
894 | .remove = nfs3_proc_remove, | |
895 | .unlink_setup = nfs3_proc_unlink_setup, | |
34e137cc | 896 | .unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare, |
1da177e4 LT |
897 | .unlink_done = nfs3_proc_unlink_done, |
898 | .rename = nfs3_proc_rename, | |
d3d4152a | 899 | .rename_setup = nfs3_proc_rename_setup, |
c6bfa1a1 | 900 | .rename_rpc_prepare = nfs3_proc_rename_rpc_prepare, |
d3d4152a | 901 | .rename_done = nfs3_proc_rename_done, |
1da177e4 LT |
902 | .link = nfs3_proc_link, |
903 | .symlink = nfs3_proc_symlink, | |
904 | .mkdir = nfs3_proc_mkdir, | |
905 | .rmdir = nfs3_proc_rmdir, | |
906 | .readdir = nfs3_proc_readdir, | |
907 | .mknod = nfs3_proc_mknod, | |
908 | .statfs = nfs3_proc_statfs, | |
909 | .fsinfo = nfs3_proc_fsinfo, | |
910 | .pathconf = nfs3_proc_pathconf, | |
911 | .decode_dirent = nfs3_decode_dirent, | |
912 | .read_setup = nfs3_proc_read_setup, | |
ea7c3303 | 913 | .read_rpc_prepare = nfs3_proc_read_rpc_prepare, |
ec06c096 | 914 | .read_done = nfs3_read_done, |
1da177e4 | 915 | .write_setup = nfs3_proc_write_setup, |
c6cb80d0 | 916 | .write_rpc_prepare = nfs3_proc_write_rpc_prepare, |
788e7a89 | 917 | .write_done = nfs3_write_done, |
1da177e4 | 918 | .commit_setup = nfs3_proc_commit_setup, |
0b7c0153 | 919 | .commit_rpc_prepare = nfs3_proc_commit_rpc_prepare, |
788e7a89 | 920 | .commit_done = nfs3_commit_done, |
1da177e4 | 921 | .lock = nfs3_proc_lock, |
5c6a9f7d | 922 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 923 | .close_context = nfs_close_context, |
45a52a02 | 924 | .init_client = nfs_init_client, |
1da177e4 | 925 | }; |