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 | |
7c513058 | 144 | nfs3_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, |
1da177e4 LT |
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, | |
c0204fd2 | 316 | int flags, struct nfs_open_context *ctx) |
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 | ||
d3d4152a JL |
441 | static void |
442 | nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) | |
443 | { | |
444 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; | |
445 | } | |
446 | ||
447 | static int | |
448 | nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
449 | struct inode *new_dir) | |
450 | { | |
451 | struct nfs_renameres *res; | |
452 | ||
453 | if (nfs3_async_handle_jukebox(task, old_dir)) | |
454 | return 0; | |
455 | res = task->tk_msg.rpc_resp; | |
456 | ||
457 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
458 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
459 | return 1; | |
460 | } | |
461 | ||
1da177e4 LT |
462 | static int |
463 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
464 | struct inode *new_dir, struct qstr *new_name) | |
465 | { | |
920769f0 JL |
466 | struct nfs_renameargs arg = { |
467 | .old_dir = NFS_FH(old_dir), | |
468 | .old_name = old_name, | |
469 | .new_dir = NFS_FH(new_dir), | |
470 | .new_name = new_name, | |
1da177e4 | 471 | }; |
e8582a8b | 472 | struct nfs_renameres res; |
dead28da CL |
473 | struct rpc_message msg = { |
474 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
475 | .rpc_argp = &arg, | |
476 | .rpc_resp = &res, | |
477 | }; | |
011fff72 | 478 | int status = -ENOMEM; |
1da177e4 LT |
479 | |
480 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
011fff72 | 481 | |
e8582a8b JL |
482 | res.old_fattr = nfs_alloc_fattr(); |
483 | res.new_fattr = nfs_alloc_fattr(); | |
484 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
011fff72 TM |
485 | goto out; |
486 | ||
dead28da | 487 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
e8582a8b JL |
488 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
489 | nfs_post_op_update_inode(new_dir, res.new_fattr); | |
011fff72 | 490 | out: |
e8582a8b JL |
491 | nfs_free_fattr(res.old_fattr); |
492 | nfs_free_fattr(res.new_fattr); | |
1da177e4 LT |
493 | dprintk("NFS reply rename: %d\n", status); |
494 | return status; | |
495 | } | |
496 | ||
497 | static int | |
498 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
499 | { | |
1da177e4 LT |
500 | struct nfs3_linkargs arg = { |
501 | .fromfh = NFS_FH(inode), | |
502 | .tofh = NFS_FH(dir), | |
503 | .toname = name->name, | |
504 | .tolen = name->len | |
505 | }; | |
136f2627 | 506 | struct nfs3_linkres res; |
dead28da CL |
507 | struct rpc_message msg = { |
508 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
509 | .rpc_argp = &arg, | |
510 | .rpc_resp = &res, | |
511 | }; | |
136f2627 | 512 | int status = -ENOMEM; |
1da177e4 LT |
513 | |
514 | dprintk("NFS call link %s\n", name->name); | |
136f2627 TM |
515 | res.fattr = nfs_alloc_fattr(); |
516 | res.dir_attr = nfs_alloc_fattr(); | |
517 | if (res.fattr == NULL || res.dir_attr == NULL) | |
518 | goto out; | |
519 | ||
dead28da | 520 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
136f2627 TM |
521 | nfs_post_op_update_inode(dir, res.dir_attr); |
522 | nfs_post_op_update_inode(inode, res.fattr); | |
523 | out: | |
524 | nfs_free_fattr(res.dir_attr); | |
525 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
526 | dprintk("NFS reply link: %d\n", status); |
527 | return status; | |
528 | } | |
529 | ||
530 | static int | |
94a6d753 CL |
531 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
532 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 533 | { |
0b4aae7a TM |
534 | struct nfs3_createdata *data; |
535 | int status = -ENOMEM; | |
1da177e4 | 536 | |
94a6d753 | 537 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 538 | return -ENAMETOOLONG; |
4f390c15 | 539 | |
94a6d753 CL |
540 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
541 | ||
0b4aae7a TM |
542 | data = nfs3_alloc_createdata(); |
543 | if (data == NULL) | |
4f390c15 | 544 | goto out; |
0b4aae7a TM |
545 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
546 | data->arg.symlink.fromfh = NFS_FH(dir); | |
547 | data->arg.symlink.fromname = dentry->d_name.name; | |
548 | data->arg.symlink.fromlen = dentry->d_name.len; | |
549 | data->arg.symlink.pages = &page; | |
550 | data->arg.symlink.pathlen = len; | |
551 | data->arg.symlink.sattr = sattr; | |
552 | ||
553 | status = nfs3_do_create(dir, dentry, data); | |
554 | ||
555 | nfs3_free_createdata(data); | |
4f390c15 | 556 | out: |
1da177e4 LT |
557 | dprintk("NFS reply symlink: %d\n", status); |
558 | return status; | |
559 | } | |
560 | ||
561 | static int | |
562 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
563 | { | |
0b4aae7a | 564 | struct nfs3_createdata *data; |
055ffbea | 565 | int mode = sattr->ia_mode; |
0b4aae7a | 566 | int status = -ENOMEM; |
1da177e4 LT |
567 | |
568 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 569 | |
ce3b0f8d | 570 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 571 | |
0b4aae7a TM |
572 | data = nfs3_alloc_createdata(); |
573 | if (data == NULL) | |
055ffbea | 574 | goto out; |
0b4aae7a TM |
575 | |
576 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
577 | data->arg.mkdir.fh = NFS_FH(dir); | |
578 | data->arg.mkdir.name = dentry->d_name.name; | |
579 | data->arg.mkdir.len = dentry->d_name.len; | |
580 | data->arg.mkdir.sattr = sattr; | |
581 | ||
582 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
583 | if (status != 0) |
584 | goto out; | |
0b4aae7a | 585 | |
055ffbea AG |
586 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
587 | out: | |
0b4aae7a | 588 | nfs3_free_createdata(data); |
1da177e4 LT |
589 | dprintk("NFS reply mkdir: %d\n", status); |
590 | return status; | |
591 | } | |
592 | ||
593 | static int | |
594 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
595 | { | |
39967ddf | 596 | struct nfs_fattr *dir_attr; |
1da177e4 LT |
597 | struct nfs3_diropargs arg = { |
598 | .fh = NFS_FH(dir), | |
599 | .name = name->name, | |
600 | .len = name->len | |
601 | }; | |
dead28da CL |
602 | struct rpc_message msg = { |
603 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
604 | .rpc_argp = &arg, | |
dead28da | 605 | }; |
39967ddf | 606 | int status = -ENOMEM; |
1da177e4 LT |
607 | |
608 | dprintk("NFS call rmdir %s\n", name->name); | |
39967ddf TM |
609 | dir_attr = nfs_alloc_fattr(); |
610 | if (dir_attr == NULL) | |
611 | goto out; | |
612 | ||
613 | msg.rpc_resp = dir_attr; | |
dead28da | 614 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
39967ddf TM |
615 | nfs_post_op_update_inode(dir, dir_attr); |
616 | nfs_free_fattr(dir_attr); | |
617 | out: | |
1da177e4 LT |
618 | dprintk("NFS reply rmdir: %d\n", status); |
619 | return status; | |
620 | } | |
621 | ||
622 | /* | |
623 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
624 | * to the encode function, which installs it in the receive iovec. | |
625 | * The decode function itself doesn't perform any decoding, it just makes | |
626 | * sure the reply is syntactically correct. | |
627 | * | |
628 | * Also note that this implementation handles both plain readdir and | |
629 | * readdirplus. | |
630 | */ | |
631 | static int | |
632 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 633 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
634 | { |
635 | struct inode *dir = dentry->d_inode; | |
bc4785cd | 636 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
637 | struct nfs3_readdirargs arg = { |
638 | .fh = NFS_FH(dir), | |
639 | .cookie = cookie, | |
640 | .verf = {verf[0], verf[1]}, | |
641 | .plus = plus, | |
642 | .count = count, | |
56e4ebf8 | 643 | .pages = pages |
1da177e4 LT |
644 | }; |
645 | struct nfs3_readdirres res = { | |
1da177e4 LT |
646 | .verf = verf, |
647 | .plus = plus | |
648 | }; | |
649 | struct rpc_message msg = { | |
650 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
651 | .rpc_argp = &arg, | |
652 | .rpc_resp = &res, | |
653 | .rpc_cred = cred | |
654 | }; | |
aa49b4cf | 655 | int status = -ENOMEM; |
1da177e4 | 656 | |
1da177e4 LT |
657 | if (plus) |
658 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
659 | ||
660 | dprintk("NFS call readdir%s %d\n", | |
661 | plus? "plus" : "", (unsigned int) cookie); | |
662 | ||
aa49b4cf TM |
663 | res.dir_attr = nfs_alloc_fattr(); |
664 | if (res.dir_attr == NULL) | |
665 | goto out; | |
666 | ||
1da177e4 | 667 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
668 | |
669 | nfs_invalidate_atime(dir); | |
aa49b4cf | 670 | nfs_refresh_inode(dir, res.dir_attr); |
c4812998 | 671 | |
aa49b4cf TM |
672 | nfs_free_fattr(res.dir_attr); |
673 | out: | |
d141d974 CL |
674 | dprintk("NFS reply readdir%s: %d\n", |
675 | plus? "plus" : "", status); | |
1da177e4 LT |
676 | return status; |
677 | } | |
678 | ||
679 | static int | |
680 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
681 | dev_t rdev) | |
682 | { | |
0b4aae7a | 683 | struct nfs3_createdata *data; |
055ffbea | 684 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 685 | int status = -ENOMEM; |
1da177e4 LT |
686 | |
687 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
688 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 689 | |
ce3b0f8d | 690 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 691 | |
0b4aae7a TM |
692 | data = nfs3_alloc_createdata(); |
693 | if (data == NULL) | |
055ffbea | 694 | goto out; |
0b4aae7a TM |
695 | |
696 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
697 | data->arg.mknod.fh = NFS_FH(dir); | |
698 | data->arg.mknod.name = dentry->d_name.name; | |
699 | data->arg.mknod.len = dentry->d_name.len; | |
700 | data->arg.mknod.sattr = sattr; | |
701 | data->arg.mknod.rdev = rdev; | |
702 | ||
703 | switch (sattr->ia_mode & S_IFMT) { | |
704 | case S_IFBLK: | |
705 | data->arg.mknod.type = NF3BLK; | |
706 | break; | |
707 | case S_IFCHR: | |
708 | data->arg.mknod.type = NF3CHR; | |
709 | break; | |
710 | case S_IFIFO: | |
711 | data->arg.mknod.type = NF3FIFO; | |
712 | break; | |
713 | case S_IFSOCK: | |
714 | data->arg.mknod.type = NF3SOCK; | |
715 | break; | |
716 | default: | |
717 | status = -EINVAL; | |
718 | goto out; | |
719 | } | |
720 | ||
721 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
722 | if (status != 0) |
723 | goto out; | |
724 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
725 | out: | |
0b4aae7a | 726 | nfs3_free_createdata(data); |
1da177e4 LT |
727 | dprintk("NFS reply mknod: %d\n", status); |
728 | return status; | |
729 | } | |
730 | ||
731 | static int | |
732 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
733 | struct nfs_fsstat *stat) | |
734 | { | |
dead28da CL |
735 | struct rpc_message msg = { |
736 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
737 | .rpc_argp = fhandle, | |
738 | .rpc_resp = stat, | |
739 | }; | |
1da177e4 LT |
740 | int status; |
741 | ||
742 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 743 | nfs_fattr_init(stat->fattr); |
dead28da | 744 | status = rpc_call_sync(server->client, &msg, 0); |
d141d974 | 745 | dprintk("NFS reply fsstat: %d\n", status); |
1da177e4 LT |
746 | return status; |
747 | } | |
748 | ||
749 | static int | |
37ca8f5c | 750 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
751 | struct nfs_fsinfo *info) |
752 | { | |
dead28da CL |
753 | struct rpc_message msg = { |
754 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
755 | .rpc_argp = fhandle, | |
756 | .rpc_resp = info, | |
757 | }; | |
1da177e4 LT |
758 | int status; |
759 | ||
760 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 761 | nfs_fattr_init(info->fattr); |
37ca8f5c | 762 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
763 | dprintk("NFS reply fsinfo: %d\n", status); |
764 | return status; | |
765 | } | |
766 | ||
37ca8f5c EK |
767 | /* |
768 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
769 | * nfs_create_server | |
770 | */ | |
771 | static int | |
772 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
773 | struct nfs_fsinfo *info) | |
774 | { | |
775 | int status; | |
776 | ||
777 | status = do_proc_fsinfo(server->client, fhandle, info); | |
778 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
779 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
780 | return status; | |
781 | } | |
782 | ||
1da177e4 LT |
783 | static int |
784 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
785 | struct nfs_pathconf *info) | |
786 | { | |
dead28da CL |
787 | struct rpc_message msg = { |
788 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
789 | .rpc_argp = fhandle, | |
790 | .rpc_resp = info, | |
791 | }; | |
1da177e4 LT |
792 | int status; |
793 | ||
794 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 795 | nfs_fattr_init(info->fattr); |
dead28da | 796 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
797 | dprintk("NFS reply pathconf: %d\n", status); |
798 | return status; | |
799 | } | |
800 | ||
ec06c096 | 801 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 802 | { |
006ea73e | 803 | if (nfs3_async_handle_jukebox(task, data->inode)) |
ec06c096 | 804 | return -EAGAIN; |
8850df99 TM |
805 | |
806 | nfs_invalidate_atime(data->inode); | |
807 | nfs_refresh_inode(data->inode, &data->fattr); | |
ec06c096 | 808 | return 0; |
1da177e4 LT |
809 | } |
810 | ||
bdc7f021 | 811 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 812 | { |
bdc7f021 | 813 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
814 | } |
815 | ||
788e7a89 | 816 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 817 | { |
006ea73e | 818 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 819 | return -EAGAIN; |
1da177e4 | 820 | if (task->tk_status >= 0) |
70ca8852 | 821 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
788e7a89 | 822 | return 0; |
1da177e4 LT |
823 | } |
824 | ||
bdc7f021 | 825 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 826 | { |
bdc7f021 | 827 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
828 | } |
829 | ||
788e7a89 | 830 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 831 | { |
006ea73e | 832 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 833 | return -EAGAIN; |
9e08a3c5 | 834 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 835 | return 0; |
1da177e4 LT |
836 | } |
837 | ||
bdc7f021 | 838 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 839 | { |
bdc7f021 | 840 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
841 | } |
842 | ||
843 | static int | |
844 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
845 | { | |
1093a60e CL |
846 | struct inode *inode = filp->f_path.dentry->d_inode; |
847 | ||
848 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
849 | } |
850 | ||
509de811 | 851 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
852 | .version = 3, /* protocol version */ |
853 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
854 | .dir_inode_ops = &nfs3_dir_inode_operations, |
855 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
856 | .getroot = nfs3_proc_get_root, |
857 | .getattr = nfs3_proc_getattr, | |
858 | .setattr = nfs3_proc_setattr, | |
859 | .lookup = nfs3_proc_lookup, | |
860 | .access = nfs3_proc_access, | |
861 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
862 | .create = nfs3_proc_create, |
863 | .remove = nfs3_proc_remove, | |
864 | .unlink_setup = nfs3_proc_unlink_setup, | |
865 | .unlink_done = nfs3_proc_unlink_done, | |
866 | .rename = nfs3_proc_rename, | |
d3d4152a JL |
867 | .rename_setup = nfs3_proc_rename_setup, |
868 | .rename_done = nfs3_proc_rename_done, | |
1da177e4 LT |
869 | .link = nfs3_proc_link, |
870 | .symlink = nfs3_proc_symlink, | |
871 | .mkdir = nfs3_proc_mkdir, | |
872 | .rmdir = nfs3_proc_rmdir, | |
873 | .readdir = nfs3_proc_readdir, | |
874 | .mknod = nfs3_proc_mknod, | |
875 | .statfs = nfs3_proc_statfs, | |
876 | .fsinfo = nfs3_proc_fsinfo, | |
877 | .pathconf = nfs3_proc_pathconf, | |
878 | .decode_dirent = nfs3_decode_dirent, | |
879 | .read_setup = nfs3_proc_read_setup, | |
ec06c096 | 880 | .read_done = nfs3_read_done, |
1da177e4 | 881 | .write_setup = nfs3_proc_write_setup, |
788e7a89 | 882 | .write_done = nfs3_write_done, |
1da177e4 | 883 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 884 | .commit_done = nfs3_commit_done, |
1da177e4 | 885 | .lock = nfs3_proc_lock, |
5c6a9f7d | 886 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 887 | .close_context = nfs_close_context, |
45a52a02 | 888 | .init_client = nfs_init_client, |
1da177e4 | 889 | }; |