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 | |
7c513058 | 145 | nfs3_proc_lookup(struct rpc_clnt *clnt, 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, | |
c0204fd2 | 317 | int flags, struct nfs_open_context *ctx) |
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), | |
401 | .name.len = name->len, | |
402 | .name.name = name->name, | |
1da177e4 | 403 | }; |
4fdc17b2 TM |
404 | struct nfs_removeres res; |
405 | struct rpc_message msg = { | |
406 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
407 | .rpc_argp = &arg, | |
408 | .rpc_resp = &res, | |
1da177e4 | 409 | }; |
d346890b | 410 | int status = -ENOMEM; |
1da177e4 LT |
411 | |
412 | dprintk("NFS call remove %s\n", name->name); | |
d346890b TM |
413 | res.dir_attr = nfs_alloc_fattr(); |
414 | if (res.dir_attr == NULL) | |
415 | goto out; | |
416 | ||
1da177e4 | 417 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
d346890b TM |
418 | nfs_post_op_update_inode(dir, res.dir_attr); |
419 | nfs_free_fattr(res.dir_attr); | |
420 | out: | |
1da177e4 LT |
421 | dprintk("NFS reply remove: %d\n", status); |
422 | return status; | |
423 | } | |
424 | ||
e4eff1a6 TM |
425 | static void |
426 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) | |
1da177e4 | 427 | { |
1da177e4 | 428 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
1da177e4 LT |
429 | } |
430 | ||
431 | static int | |
e4eff1a6 | 432 | nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 433 | { |
e4eff1a6 TM |
434 | struct nfs_removeres *res; |
435 | if (nfs3_async_handle_jukebox(task, dir)) | |
436 | return 0; | |
437 | res = task->tk_msg.rpc_resp; | |
d346890b | 438 | nfs_post_op_update_inode(dir, res->dir_attr); |
e4eff1a6 | 439 | return 1; |
1da177e4 LT |
440 | } |
441 | ||
d3d4152a JL |
442 | static void |
443 | nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) | |
444 | { | |
445 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; | |
446 | } | |
447 | ||
448 | static int | |
449 | nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir, | |
450 | struct inode *new_dir) | |
451 | { | |
452 | struct nfs_renameres *res; | |
453 | ||
454 | if (nfs3_async_handle_jukebox(task, old_dir)) | |
455 | return 0; | |
456 | res = task->tk_msg.rpc_resp; | |
457 | ||
458 | nfs_post_op_update_inode(old_dir, res->old_fattr); | |
459 | nfs_post_op_update_inode(new_dir, res->new_fattr); | |
460 | return 1; | |
461 | } | |
462 | ||
1da177e4 LT |
463 | static int |
464 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
465 | struct inode *new_dir, struct qstr *new_name) | |
466 | { | |
920769f0 JL |
467 | struct nfs_renameargs arg = { |
468 | .old_dir = NFS_FH(old_dir), | |
469 | .old_name = old_name, | |
470 | .new_dir = NFS_FH(new_dir), | |
471 | .new_name = new_name, | |
1da177e4 | 472 | }; |
e8582a8b | 473 | struct nfs_renameres res; |
dead28da CL |
474 | struct rpc_message msg = { |
475 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
476 | .rpc_argp = &arg, | |
477 | .rpc_resp = &res, | |
478 | }; | |
011fff72 | 479 | int status = -ENOMEM; |
1da177e4 LT |
480 | |
481 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
011fff72 | 482 | |
e8582a8b JL |
483 | res.old_fattr = nfs_alloc_fattr(); |
484 | res.new_fattr = nfs_alloc_fattr(); | |
485 | if (res.old_fattr == NULL || res.new_fattr == NULL) | |
011fff72 TM |
486 | goto out; |
487 | ||
dead28da | 488 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
e8582a8b JL |
489 | nfs_post_op_update_inode(old_dir, res.old_fattr); |
490 | nfs_post_op_update_inode(new_dir, res.new_fattr); | |
011fff72 | 491 | out: |
e8582a8b JL |
492 | nfs_free_fattr(res.old_fattr); |
493 | nfs_free_fattr(res.new_fattr); | |
1da177e4 LT |
494 | dprintk("NFS reply rename: %d\n", status); |
495 | return status; | |
496 | } | |
497 | ||
498 | static int | |
499 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
500 | { | |
1da177e4 LT |
501 | struct nfs3_linkargs arg = { |
502 | .fromfh = NFS_FH(inode), | |
503 | .tofh = NFS_FH(dir), | |
504 | .toname = name->name, | |
505 | .tolen = name->len | |
506 | }; | |
136f2627 | 507 | struct nfs3_linkres res; |
dead28da CL |
508 | struct rpc_message msg = { |
509 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
510 | .rpc_argp = &arg, | |
511 | .rpc_resp = &res, | |
512 | }; | |
136f2627 | 513 | int status = -ENOMEM; |
1da177e4 LT |
514 | |
515 | dprintk("NFS call link %s\n", name->name); | |
136f2627 TM |
516 | res.fattr = nfs_alloc_fattr(); |
517 | res.dir_attr = nfs_alloc_fattr(); | |
518 | if (res.fattr == NULL || res.dir_attr == NULL) | |
519 | goto out; | |
520 | ||
dead28da | 521 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
136f2627 TM |
522 | nfs_post_op_update_inode(dir, res.dir_attr); |
523 | nfs_post_op_update_inode(inode, res.fattr); | |
524 | out: | |
525 | nfs_free_fattr(res.dir_attr); | |
526 | nfs_free_fattr(res.fattr); | |
1da177e4 LT |
527 | dprintk("NFS reply link: %d\n", status); |
528 | return status; | |
529 | } | |
530 | ||
531 | static int | |
94a6d753 CL |
532 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
533 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 534 | { |
0b4aae7a TM |
535 | struct nfs3_createdata *data; |
536 | int status = -ENOMEM; | |
1da177e4 | 537 | |
94a6d753 | 538 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 539 | return -ENAMETOOLONG; |
4f390c15 | 540 | |
94a6d753 CL |
541 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
542 | ||
0b4aae7a TM |
543 | data = nfs3_alloc_createdata(); |
544 | if (data == NULL) | |
4f390c15 | 545 | goto out; |
0b4aae7a TM |
546 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
547 | data->arg.symlink.fromfh = NFS_FH(dir); | |
548 | data->arg.symlink.fromname = dentry->d_name.name; | |
549 | data->arg.symlink.fromlen = dentry->d_name.len; | |
550 | data->arg.symlink.pages = &page; | |
551 | data->arg.symlink.pathlen = len; | |
552 | data->arg.symlink.sattr = sattr; | |
553 | ||
554 | status = nfs3_do_create(dir, dentry, data); | |
555 | ||
556 | nfs3_free_createdata(data); | |
4f390c15 | 557 | out: |
1da177e4 LT |
558 | dprintk("NFS reply symlink: %d\n", status); |
559 | return status; | |
560 | } | |
561 | ||
562 | static int | |
563 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
564 | { | |
0b4aae7a | 565 | struct nfs3_createdata *data; |
d3fb6120 | 566 | umode_t mode = sattr->ia_mode; |
0b4aae7a | 567 | int status = -ENOMEM; |
1da177e4 LT |
568 | |
569 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 570 | |
ce3b0f8d | 571 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 572 | |
0b4aae7a TM |
573 | data = nfs3_alloc_createdata(); |
574 | if (data == NULL) | |
055ffbea | 575 | goto out; |
0b4aae7a TM |
576 | |
577 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
578 | data->arg.mkdir.fh = NFS_FH(dir); | |
579 | data->arg.mkdir.name = dentry->d_name.name; | |
580 | data->arg.mkdir.len = dentry->d_name.len; | |
581 | data->arg.mkdir.sattr = sattr; | |
582 | ||
583 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
584 | if (status != 0) |
585 | goto out; | |
0b4aae7a | 586 | |
055ffbea AG |
587 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
588 | out: | |
0b4aae7a | 589 | nfs3_free_createdata(data); |
1da177e4 LT |
590 | dprintk("NFS reply mkdir: %d\n", status); |
591 | return status; | |
592 | } | |
593 | ||
594 | static int | |
595 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
596 | { | |
39967ddf | 597 | struct nfs_fattr *dir_attr; |
1da177e4 LT |
598 | struct nfs3_diropargs arg = { |
599 | .fh = NFS_FH(dir), | |
600 | .name = name->name, | |
601 | .len = name->len | |
602 | }; | |
dead28da CL |
603 | struct rpc_message msg = { |
604 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
605 | .rpc_argp = &arg, | |
dead28da | 606 | }; |
39967ddf | 607 | int status = -ENOMEM; |
1da177e4 LT |
608 | |
609 | dprintk("NFS call rmdir %s\n", name->name); | |
39967ddf TM |
610 | dir_attr = nfs_alloc_fattr(); |
611 | if (dir_attr == NULL) | |
612 | goto out; | |
613 | ||
614 | msg.rpc_resp = dir_attr; | |
dead28da | 615 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
39967ddf TM |
616 | nfs_post_op_update_inode(dir, dir_attr); |
617 | nfs_free_fattr(dir_attr); | |
618 | out: | |
1da177e4 LT |
619 | dprintk("NFS reply rmdir: %d\n", status); |
620 | return status; | |
621 | } | |
622 | ||
623 | /* | |
624 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
625 | * to the encode function, which installs it in the receive iovec. | |
626 | * The decode function itself doesn't perform any decoding, it just makes | |
627 | * sure the reply is syntactically correct. | |
628 | * | |
629 | * Also note that this implementation handles both plain readdir and | |
630 | * readdirplus. | |
631 | */ | |
632 | static int | |
633 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
56e4ebf8 | 634 | u64 cookie, struct page **pages, unsigned int count, int plus) |
1da177e4 LT |
635 | { |
636 | struct inode *dir = dentry->d_inode; | |
bc4785cd | 637 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
638 | struct nfs3_readdirargs arg = { |
639 | .fh = NFS_FH(dir), | |
640 | .cookie = cookie, | |
641 | .verf = {verf[0], verf[1]}, | |
642 | .plus = plus, | |
643 | .count = count, | |
56e4ebf8 | 644 | .pages = pages |
1da177e4 LT |
645 | }; |
646 | struct nfs3_readdirres res = { | |
1da177e4 LT |
647 | .verf = verf, |
648 | .plus = plus | |
649 | }; | |
650 | struct rpc_message msg = { | |
651 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
652 | .rpc_argp = &arg, | |
653 | .rpc_resp = &res, | |
654 | .rpc_cred = cred | |
655 | }; | |
aa49b4cf | 656 | int status = -ENOMEM; |
1da177e4 | 657 | |
1da177e4 LT |
658 | if (plus) |
659 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
660 | ||
661 | dprintk("NFS call readdir%s %d\n", | |
662 | plus? "plus" : "", (unsigned int) cookie); | |
663 | ||
aa49b4cf TM |
664 | res.dir_attr = nfs_alloc_fattr(); |
665 | if (res.dir_attr == NULL) | |
666 | goto out; | |
667 | ||
1da177e4 | 668 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
669 | |
670 | nfs_invalidate_atime(dir); | |
aa49b4cf | 671 | nfs_refresh_inode(dir, res.dir_attr); |
c4812998 | 672 | |
aa49b4cf TM |
673 | nfs_free_fattr(res.dir_attr); |
674 | out: | |
d141d974 CL |
675 | dprintk("NFS reply readdir%s: %d\n", |
676 | plus? "plus" : "", status); | |
1da177e4 LT |
677 | return status; |
678 | } | |
679 | ||
680 | static int | |
681 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
682 | dev_t rdev) | |
683 | { | |
0b4aae7a | 684 | struct nfs3_createdata *data; |
d3fb6120 | 685 | umode_t mode = sattr->ia_mode; |
0b4aae7a | 686 | int status = -ENOMEM; |
1da177e4 LT |
687 | |
688 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
689 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 690 | |
ce3b0f8d | 691 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 692 | |
0b4aae7a TM |
693 | data = nfs3_alloc_createdata(); |
694 | if (data == NULL) | |
055ffbea | 695 | goto out; |
0b4aae7a TM |
696 | |
697 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
698 | data->arg.mknod.fh = NFS_FH(dir); | |
699 | data->arg.mknod.name = dentry->d_name.name; | |
700 | data->arg.mknod.len = dentry->d_name.len; | |
701 | data->arg.mknod.sattr = sattr; | |
702 | data->arg.mknod.rdev = rdev; | |
703 | ||
704 | switch (sattr->ia_mode & S_IFMT) { | |
705 | case S_IFBLK: | |
706 | data->arg.mknod.type = NF3BLK; | |
707 | break; | |
708 | case S_IFCHR: | |
709 | data->arg.mknod.type = NF3CHR; | |
710 | break; | |
711 | case S_IFIFO: | |
712 | data->arg.mknod.type = NF3FIFO; | |
713 | break; | |
714 | case S_IFSOCK: | |
715 | data->arg.mknod.type = NF3SOCK; | |
716 | break; | |
717 | default: | |
718 | status = -EINVAL; | |
719 | goto out; | |
720 | } | |
721 | ||
722 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
723 | if (status != 0) |
724 | goto out; | |
725 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
726 | out: | |
0b4aae7a | 727 | nfs3_free_createdata(data); |
1da177e4 LT |
728 | dprintk("NFS reply mknod: %d\n", status); |
729 | return status; | |
730 | } | |
731 | ||
732 | static int | |
733 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
734 | struct nfs_fsstat *stat) | |
735 | { | |
dead28da CL |
736 | struct rpc_message msg = { |
737 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
738 | .rpc_argp = fhandle, | |
739 | .rpc_resp = stat, | |
740 | }; | |
1da177e4 LT |
741 | int status; |
742 | ||
743 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 744 | nfs_fattr_init(stat->fattr); |
dead28da | 745 | status = rpc_call_sync(server->client, &msg, 0); |
d141d974 | 746 | dprintk("NFS reply fsstat: %d\n", status); |
1da177e4 LT |
747 | return status; |
748 | } | |
749 | ||
750 | static int | |
37ca8f5c | 751 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
752 | struct nfs_fsinfo *info) |
753 | { | |
dead28da CL |
754 | struct rpc_message msg = { |
755 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
756 | .rpc_argp = fhandle, | |
757 | .rpc_resp = info, | |
758 | }; | |
1da177e4 LT |
759 | int status; |
760 | ||
761 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 762 | nfs_fattr_init(info->fattr); |
37ca8f5c | 763 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
764 | dprintk("NFS reply fsinfo: %d\n", status); |
765 | return status; | |
766 | } | |
767 | ||
37ca8f5c EK |
768 | /* |
769 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
770 | * nfs_create_server | |
771 | */ | |
772 | static int | |
773 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
774 | struct nfs_fsinfo *info) | |
775 | { | |
776 | int status; | |
777 | ||
778 | status = do_proc_fsinfo(server->client, fhandle, info); | |
779 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
780 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
781 | return status; | |
782 | } | |
783 | ||
1da177e4 LT |
784 | static int |
785 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
786 | struct nfs_pathconf *info) | |
787 | { | |
dead28da CL |
788 | struct rpc_message msg = { |
789 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
790 | .rpc_argp = fhandle, | |
791 | .rpc_resp = info, | |
792 | }; | |
1da177e4 LT |
793 | int status; |
794 | ||
795 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 796 | nfs_fattr_init(info->fattr); |
dead28da | 797 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
798 | dprintk("NFS reply pathconf: %d\n", status); |
799 | return status; | |
800 | } | |
801 | ||
ec06c096 | 802 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 803 | { |
006ea73e | 804 | if (nfs3_async_handle_jukebox(task, data->inode)) |
ec06c096 | 805 | return -EAGAIN; |
8850df99 TM |
806 | |
807 | nfs_invalidate_atime(data->inode); | |
808 | nfs_refresh_inode(data->inode, &data->fattr); | |
ec06c096 | 809 | return 0; |
1da177e4 LT |
810 | } |
811 | ||
bdc7f021 | 812 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 813 | { |
bdc7f021 | 814 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
815 | } |
816 | ||
788e7a89 | 817 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 818 | { |
006ea73e | 819 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 820 | return -EAGAIN; |
1da177e4 | 821 | if (task->tk_status >= 0) |
70ca8852 | 822 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
788e7a89 | 823 | return 0; |
1da177e4 LT |
824 | } |
825 | ||
bdc7f021 | 826 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 827 | { |
bdc7f021 | 828 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
829 | } |
830 | ||
c6cb80d0 BS |
831 | static void nfs3_proc_write_rpc_prepare(struct rpc_task *task, struct nfs_write_data *data) |
832 | { | |
833 | rpc_call_start(task); | |
834 | } | |
835 | ||
788e7a89 | 836 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 837 | { |
006ea73e | 838 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 839 | return -EAGAIN; |
9e08a3c5 | 840 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 841 | return 0; |
1da177e4 LT |
842 | } |
843 | ||
bdc7f021 | 844 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 845 | { |
bdc7f021 | 846 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
847 | } |
848 | ||
849 | static int | |
850 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
851 | { | |
1093a60e CL |
852 | struct inode *inode = filp->f_path.dentry->d_inode; |
853 | ||
854 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
855 | } |
856 | ||
509de811 | 857 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
858 | .version = 3, /* protocol version */ |
859 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
860 | .dir_inode_ops = &nfs3_dir_inode_operations, |
861 | .file_inode_ops = &nfs3_file_inode_operations, | |
1788ea6e | 862 | .file_ops = &nfs_file_operations, |
1da177e4 LT |
863 | .getroot = nfs3_proc_get_root, |
864 | .getattr = nfs3_proc_getattr, | |
865 | .setattr = nfs3_proc_setattr, | |
866 | .lookup = nfs3_proc_lookup, | |
867 | .access = nfs3_proc_access, | |
868 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
869 | .create = nfs3_proc_create, |
870 | .remove = nfs3_proc_remove, | |
871 | .unlink_setup = nfs3_proc_unlink_setup, | |
872 | .unlink_done = nfs3_proc_unlink_done, | |
873 | .rename = nfs3_proc_rename, | |
d3d4152a JL |
874 | .rename_setup = nfs3_proc_rename_setup, |
875 | .rename_done = nfs3_proc_rename_done, | |
1da177e4 LT |
876 | .link = nfs3_proc_link, |
877 | .symlink = nfs3_proc_symlink, | |
878 | .mkdir = nfs3_proc_mkdir, | |
879 | .rmdir = nfs3_proc_rmdir, | |
880 | .readdir = nfs3_proc_readdir, | |
881 | .mknod = nfs3_proc_mknod, | |
882 | .statfs = nfs3_proc_statfs, | |
883 | .fsinfo = nfs3_proc_fsinfo, | |
884 | .pathconf = nfs3_proc_pathconf, | |
885 | .decode_dirent = nfs3_decode_dirent, | |
886 | .read_setup = nfs3_proc_read_setup, | |
ec06c096 | 887 | .read_done = nfs3_read_done, |
1da177e4 | 888 | .write_setup = nfs3_proc_write_setup, |
c6cb80d0 | 889 | .write_rpc_prepare = nfs3_proc_write_rpc_prepare, |
788e7a89 | 890 | .write_done = nfs3_write_done, |
1da177e4 | 891 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 892 | .commit_done = nfs3_commit_done, |
1da177e4 | 893 | .lock = nfs3_proc_lock, |
5c6a9f7d | 894 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 895 | .close_context = nfs_close_context, |
45a52a02 | 896 | .init_client = nfs_init_client, |
1da177e4 | 897 | }; |