Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/nfs3proc.c | |
3 | * | |
4 | * Client-side NFSv3 procedures stubs. | |
5 | * | |
6 | * Copyright (C) 1997, Olaf Kirch | |
7 | */ | |
8 | ||
9 | #include <linux/mm.h> | |
1da177e4 LT |
10 | #include <linux/errno.h> |
11 | #include <linux/string.h> | |
12 | #include <linux/sunrpc/clnt.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
1da177e4 LT |
14 | #include <linux/nfs.h> |
15 | #include <linux/nfs3.h> | |
16 | #include <linux/nfs_fs.h> | |
17 | #include <linux/nfs_page.h> | |
18 | #include <linux/lockd/bind.h> | |
b7fa0554 | 19 | #include <linux/nfs_mount.h> |
1da177e4 | 20 | |
006ea73e | 21 | #include "iostat.h" |
f7b422b1 | 22 | #include "internal.h" |
006ea73e | 23 | |
1da177e4 LT |
24 | #define NFSDBG_FACILITY NFSDBG_PROC |
25 | ||
b68d69b8 | 26 | /* A wrapper to handle the EJUKEBOX and EKEYEXPIRED error messages */ |
1da177e4 LT |
27 | static int |
28 | nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags) | |
29 | { | |
1da177e4 | 30 | int res; |
1da177e4 LT |
31 | do { |
32 | res = rpc_call_sync(clnt, msg, flags); | |
b68d69b8 | 33 | if (res != -EJUKEBOX && res != -EKEYEXPIRED) |
1da177e4 | 34 | break; |
150030b7 | 35 | schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME); |
1da177e4 | 36 | res = -ERESTARTSYS; |
150030b7 | 37 | } while (!fatal_signal_pending(current)); |
1da177e4 LT |
38 | return res; |
39 | } | |
40 | ||
dead28da | 41 | #define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags) |
1da177e4 LT |
42 | |
43 | static int | |
006ea73e | 44 | nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode) |
1da177e4 | 45 | { |
b68d69b8 | 46 | if (task->tk_status != -EJUKEBOX && task->tk_status != -EKEYEXPIRED) |
1da177e4 | 47 | return 0; |
b68d69b8 JL |
48 | if (task->tk_status == -EJUKEBOX) |
49 | nfs_inc_stats(inode, NFSIOS_DELAY); | |
1da177e4 LT |
50 | task->tk_status = 0; |
51 | rpc_restart_call(task); | |
52 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); | |
53 | return 1; | |
54 | } | |
55 | ||
1da177e4 | 56 | static int |
03c21733 BF |
57 | do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle, |
58 | struct nfs_fsinfo *info) | |
1da177e4 | 59 | { |
dead28da CL |
60 | struct rpc_message msg = { |
61 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
62 | .rpc_argp = fhandle, | |
63 | .rpc_resp = info, | |
64 | }; | |
1da177e4 LT |
65 | int status; |
66 | ||
3110ff80 | 67 | dprintk("%s: call fsinfo\n", __func__); |
0e574af1 | 68 | nfs_fattr_init(info->fattr); |
dead28da | 69 | status = rpc_call_sync(client, &msg, 0); |
3110ff80 | 70 | dprintk("%s: reply fsinfo: %d\n", __func__, status); |
1da177e4 | 71 | if (!(info->fattr->valid & NFS_ATTR_FATTR)) { |
dead28da CL |
72 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; |
73 | msg.rpc_resp = info->fattr; | |
74 | status = rpc_call_sync(client, &msg, 0); | |
3110ff80 | 75 | dprintk("%s: reply getattr: %d\n", __func__, status); |
1da177e4 LT |
76 | } |
77 | return status; | |
78 | } | |
79 | ||
03c21733 | 80 | /* |
54ceac45 | 81 | * Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb |
03c21733 BF |
82 | */ |
83 | static int | |
84 | nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, | |
85 | struct nfs_fsinfo *info) | |
86 | { | |
87 | int status; | |
88 | ||
89 | status = do_proc_get_root(server->client, fhandle, info); | |
5006a76c DH |
90 | if (status && server->nfs_client->cl_rpcclient != server->client) |
91 | status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info); | |
03c21733 BF |
92 | return status; |
93 | } | |
94 | ||
1da177e4 LT |
95 | /* |
96 | * One function for each procedure in the NFS protocol. | |
97 | */ | |
98 | static int | |
99 | nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, | |
100 | struct nfs_fattr *fattr) | |
101 | { | |
dead28da CL |
102 | struct rpc_message msg = { |
103 | .rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR], | |
104 | .rpc_argp = fhandle, | |
105 | .rpc_resp = fattr, | |
106 | }; | |
1da177e4 LT |
107 | int status; |
108 | ||
109 | dprintk("NFS call getattr\n"); | |
0e574af1 | 110 | nfs_fattr_init(fattr); |
dead28da | 111 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
112 | dprintk("NFS reply getattr: %d\n", status); |
113 | return status; | |
114 | } | |
115 | ||
116 | static int | |
117 | nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, | |
118 | struct iattr *sattr) | |
119 | { | |
120 | struct inode *inode = dentry->d_inode; | |
121 | struct nfs3_sattrargs arg = { | |
122 | .fh = NFS_FH(inode), | |
123 | .sattr = sattr, | |
124 | }; | |
dead28da CL |
125 | struct rpc_message msg = { |
126 | .rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR], | |
127 | .rpc_argp = &arg, | |
128 | .rpc_resp = fattr, | |
129 | }; | |
1da177e4 LT |
130 | int status; |
131 | ||
132 | dprintk("NFS call setattr\n"); | |
659bfcd6 TM |
133 | if (sattr->ia_valid & ATTR_FILE) |
134 | msg.rpc_cred = nfs_file_cred(sattr->ia_file); | |
0e574af1 | 135 | nfs_fattr_init(fattr); |
dead28da | 136 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
65e4308d TM |
137 | if (status == 0) |
138 | nfs_setattr_update_inode(inode, sattr); | |
1da177e4 LT |
139 | dprintk("NFS reply setattr: %d\n", status); |
140 | return status; | |
141 | } | |
142 | ||
143 | static int | |
144 | nfs3_proc_lookup(struct inode *dir, struct qstr *name, | |
145 | struct nfs_fh *fhandle, struct nfs_fattr *fattr) | |
146 | { | |
1da177e4 LT |
147 | struct nfs3_diropargs arg = { |
148 | .fh = NFS_FH(dir), | |
149 | .name = name->name, | |
150 | .len = name->len | |
151 | }; | |
152 | struct nfs3_diropres res = { | |
1da177e4 LT |
153 | .fh = fhandle, |
154 | .fattr = fattr | |
155 | }; | |
dead28da CL |
156 | struct rpc_message msg = { |
157 | .rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP], | |
158 | .rpc_argp = &arg, | |
159 | .rpc_resp = &res, | |
160 | }; | |
1da177e4 LT |
161 | int status; |
162 | ||
163 | dprintk("NFS call lookup %s\n", name->name); | |
e1fb4d05 TM |
164 | res.dir_attr = nfs_alloc_fattr(); |
165 | if (res.dir_attr == NULL) | |
166 | return -ENOMEM; | |
167 | ||
0e574af1 | 168 | nfs_fattr_init(fattr); |
dead28da | 169 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
e1fb4d05 | 170 | nfs_refresh_inode(dir, res.dir_attr); |
dead28da CL |
171 | if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) { |
172 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR]; | |
173 | msg.rpc_argp = fhandle; | |
174 | msg.rpc_resp = fattr; | |
175 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); | |
176 | } | |
e1fb4d05 | 177 | nfs_free_fattr(res.dir_attr); |
1da177e4 | 178 | dprintk("NFS reply lookup: %d\n", status); |
1da177e4 LT |
179 | return status; |
180 | } | |
181 | ||
182 | static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry) | |
183 | { | |
1da177e4 LT |
184 | struct nfs3_accessargs arg = { |
185 | .fh = NFS_FH(inode), | |
186 | }; | |
c407d41a | 187 | struct nfs3_accessres res; |
1da177e4 LT |
188 | struct rpc_message msg = { |
189 | .rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS], | |
190 | .rpc_argp = &arg, | |
191 | .rpc_resp = &res, | |
dead28da | 192 | .rpc_cred = entry->cred, |
1da177e4 LT |
193 | }; |
194 | int mode = entry->mask; | |
c407d41a | 195 | int status = -ENOMEM; |
1da177e4 LT |
196 | |
197 | dprintk("NFS call access\n"); | |
1da177e4 LT |
198 | |
199 | if (mode & MAY_READ) | |
200 | arg.access |= NFS3_ACCESS_READ; | |
201 | if (S_ISDIR(inode->i_mode)) { | |
202 | if (mode & MAY_WRITE) | |
203 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE; | |
204 | if (mode & MAY_EXEC) | |
205 | arg.access |= NFS3_ACCESS_LOOKUP; | |
206 | } else { | |
207 | if (mode & MAY_WRITE) | |
208 | arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND; | |
209 | if (mode & MAY_EXEC) | |
210 | arg.access |= NFS3_ACCESS_EXECUTE; | |
211 | } | |
c407d41a TM |
212 | |
213 | res.fattr = nfs_alloc_fattr(); | |
214 | if (res.fattr == NULL) | |
215 | goto out; | |
216 | ||
1da177e4 | 217 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
c407d41a | 218 | nfs_refresh_inode(inode, res.fattr); |
1da177e4 LT |
219 | if (status == 0) { |
220 | entry->mask = 0; | |
221 | if (res.access & NFS3_ACCESS_READ) | |
222 | entry->mask |= MAY_READ; | |
223 | if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE)) | |
224 | entry->mask |= MAY_WRITE; | |
225 | if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE)) | |
226 | entry->mask |= MAY_EXEC; | |
227 | } | |
c407d41a TM |
228 | nfs_free_fattr(res.fattr); |
229 | out: | |
1da177e4 LT |
230 | dprintk("NFS reply access: %d\n", status); |
231 | return status; | |
232 | } | |
233 | ||
234 | static int nfs3_proc_readlink(struct inode *inode, struct page *page, | |
235 | unsigned int pgbase, unsigned int pglen) | |
236 | { | |
237 | struct nfs_fattr fattr; | |
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, | |
247 | .rpc_resp = &fattr, | |
248 | }; | |
1da177e4 LT |
249 | int status; |
250 | ||
251 | dprintk("NFS call readlink\n"); | |
0e574af1 | 252 | nfs_fattr_init(&fattr); |
dead28da | 253 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
1da177e4 LT |
254 | nfs_refresh_inode(inode, &fattr); |
255 | dprintk("NFS reply readlink: %d\n", status); | |
256 | return status; | |
257 | } | |
258 | ||
0b4aae7a TM |
259 | struct nfs3_createdata { |
260 | struct rpc_message msg; | |
261 | union { | |
262 | struct nfs3_createargs create; | |
263 | struct nfs3_mkdirargs mkdir; | |
264 | struct nfs3_symlinkargs symlink; | |
265 | struct nfs3_mknodargs mknod; | |
266 | } arg; | |
267 | struct nfs3_diropres res; | |
268 | struct nfs_fh fh; | |
269 | struct nfs_fattr fattr; | |
270 | struct nfs_fattr dir_attr; | |
271 | }; | |
272 | ||
273 | static struct nfs3_createdata *nfs3_alloc_createdata(void) | |
274 | { | |
275 | struct nfs3_createdata *data; | |
276 | ||
277 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
278 | if (data != NULL) { | |
279 | data->msg.rpc_argp = &data->arg; | |
280 | data->msg.rpc_resp = &data->res; | |
281 | data->res.fh = &data->fh; | |
282 | data->res.fattr = &data->fattr; | |
283 | data->res.dir_attr = &data->dir_attr; | |
284 | nfs_fattr_init(data->res.fattr); | |
285 | nfs_fattr_init(data->res.dir_attr); | |
286 | } | |
287 | return data; | |
288 | } | |
289 | ||
290 | static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data) | |
291 | { | |
292 | int status; | |
293 | ||
294 | status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0); | |
295 | nfs_post_op_update_inode(dir, data->res.dir_attr); | |
296 | if (status == 0) | |
297 | status = nfs_instantiate(dentry, data->res.fh, data->res.fattr); | |
298 | return status; | |
299 | } | |
300 | ||
301 | static void nfs3_free_createdata(struct nfs3_createdata *data) | |
302 | { | |
303 | kfree(data); | |
304 | } | |
305 | ||
1da177e4 LT |
306 | /* |
307 | * Create a regular file. | |
1da177e4 LT |
308 | */ |
309 | static int | |
310 | nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
02a913a7 | 311 | int flags, struct nameidata *nd) |
1da177e4 | 312 | { |
0b4aae7a | 313 | struct nfs3_createdata *data; |
055ffbea | 314 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 315 | int status = -ENOMEM; |
1da177e4 LT |
316 | |
317 | dprintk("NFS call create %s\n", dentry->d_name.name); | |
0b4aae7a TM |
318 | |
319 | data = nfs3_alloc_createdata(); | |
320 | if (data == NULL) | |
321 | goto out; | |
322 | ||
323 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE]; | |
324 | data->arg.create.fh = NFS_FH(dir); | |
325 | data->arg.create.name = dentry->d_name.name; | |
326 | data->arg.create.len = dentry->d_name.len; | |
327 | data->arg.create.sattr = sattr; | |
328 | ||
329 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; | |
1da177e4 | 330 | if (flags & O_EXCL) { |
0b4aae7a TM |
331 | data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE; |
332 | data->arg.create.verifier[0] = jiffies; | |
333 | data->arg.create.verifier[1] = current->pid; | |
1da177e4 LT |
334 | } |
335 | ||
ce3b0f8d | 336 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 337 | |
0b4aae7a TM |
338 | for (;;) { |
339 | status = nfs3_do_create(dir, dentry, data); | |
1da177e4 | 340 | |
0b4aae7a TM |
341 | if (status != -ENOTSUPP) |
342 | break; | |
343 | /* If the server doesn't support the exclusive creation | |
344 | * semantics, try again with simple 'guarded' mode. */ | |
345 | switch (data->arg.create.createmode) { | |
1da177e4 | 346 | case NFS3_CREATE_EXCLUSIVE: |
0b4aae7a | 347 | data->arg.create.createmode = NFS3_CREATE_GUARDED; |
1da177e4 LT |
348 | break; |
349 | ||
350 | case NFS3_CREATE_GUARDED: | |
0b4aae7a | 351 | data->arg.create.createmode = NFS3_CREATE_UNCHECKED; |
1da177e4 LT |
352 | break; |
353 | ||
354 | case NFS3_CREATE_UNCHECKED: | |
355 | goto out; | |
356 | } | |
0b4aae7a TM |
357 | nfs_fattr_init(data->res.dir_attr); |
358 | nfs_fattr_init(data->res.fattr); | |
1da177e4 LT |
359 | } |
360 | ||
1da177e4 LT |
361 | if (status != 0) |
362 | goto out; | |
363 | ||
364 | /* When we created the file with exclusive semantics, make | |
365 | * sure we set the attributes afterwards. */ | |
0b4aae7a | 366 | if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) { |
1da177e4 LT |
367 | dprintk("NFS call setattr (post-create)\n"); |
368 | ||
369 | if (!(sattr->ia_valid & ATTR_ATIME_SET)) | |
370 | sattr->ia_valid |= ATTR_ATIME; | |
371 | if (!(sattr->ia_valid & ATTR_MTIME_SET)) | |
372 | sattr->ia_valid |= ATTR_MTIME; | |
373 | ||
374 | /* Note: we could use a guarded setattr here, but I'm | |
375 | * not sure this buys us anything (and I'd have | |
376 | * to revamp the NFSv3 XDR code) */ | |
0b4aae7a TM |
377 | status = nfs3_proc_setattr(dentry, data->res.fattr, sattr); |
378 | nfs_post_op_update_inode(dentry->d_inode, data->res.fattr); | |
1da177e4 | 379 | dprintk("NFS reply setattr (post-create): %d\n", status); |
0b4aae7a TM |
380 | if (status != 0) |
381 | goto out; | |
1da177e4 | 382 | } |
055ffbea | 383 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
1da177e4 | 384 | out: |
0b4aae7a | 385 | nfs3_free_createdata(data); |
1da177e4 LT |
386 | dprintk("NFS reply create: %d\n", status); |
387 | return status; | |
388 | } | |
389 | ||
390 | static int | |
391 | nfs3_proc_remove(struct inode *dir, struct qstr *name) | |
392 | { | |
4fdc17b2 TM |
393 | struct nfs_removeargs arg = { |
394 | .fh = NFS_FH(dir), | |
395 | .name.len = name->len, | |
396 | .name.name = name->name, | |
1da177e4 | 397 | }; |
4fdc17b2 TM |
398 | struct nfs_removeres res; |
399 | struct rpc_message msg = { | |
400 | .rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE], | |
401 | .rpc_argp = &arg, | |
402 | .rpc_resp = &res, | |
1da177e4 LT |
403 | }; |
404 | int status; | |
405 | ||
406 | dprintk("NFS call remove %s\n", name->name); | |
4fdc17b2 | 407 | nfs_fattr_init(&res.dir_attr); |
1da177e4 | 408 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
4fdc17b2 | 409 | nfs_post_op_update_inode(dir, &res.dir_attr); |
1da177e4 LT |
410 | dprintk("NFS reply remove: %d\n", status); |
411 | return status; | |
412 | } | |
413 | ||
e4eff1a6 TM |
414 | static void |
415 | nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) | |
1da177e4 | 416 | { |
1da177e4 | 417 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; |
1da177e4 LT |
418 | } |
419 | ||
420 | static int | |
e4eff1a6 | 421 | nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) |
1da177e4 | 422 | { |
e4eff1a6 TM |
423 | struct nfs_removeres *res; |
424 | if (nfs3_async_handle_jukebox(task, dir)) | |
425 | return 0; | |
426 | res = task->tk_msg.rpc_resp; | |
427 | nfs_post_op_update_inode(dir, &res->dir_attr); | |
428 | return 1; | |
1da177e4 LT |
429 | } |
430 | ||
431 | static int | |
432 | nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name, | |
433 | struct inode *new_dir, struct qstr *new_name) | |
434 | { | |
1da177e4 LT |
435 | struct nfs3_renameargs arg = { |
436 | .fromfh = NFS_FH(old_dir), | |
437 | .fromname = old_name->name, | |
438 | .fromlen = old_name->len, | |
439 | .tofh = NFS_FH(new_dir), | |
440 | .toname = new_name->name, | |
441 | .tolen = new_name->len | |
442 | }; | |
011fff72 | 443 | struct nfs3_renameres res; |
dead28da CL |
444 | struct rpc_message msg = { |
445 | .rpc_proc = &nfs3_procedures[NFS3PROC_RENAME], | |
446 | .rpc_argp = &arg, | |
447 | .rpc_resp = &res, | |
448 | }; | |
011fff72 | 449 | int status = -ENOMEM; |
1da177e4 LT |
450 | |
451 | dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name); | |
011fff72 TM |
452 | |
453 | res.fromattr = nfs_alloc_fattr(); | |
454 | res.toattr = nfs_alloc_fattr(); | |
455 | if (res.fromattr == NULL || res.toattr == NULL) | |
456 | goto out; | |
457 | ||
dead28da | 458 | status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0); |
011fff72 TM |
459 | nfs_post_op_update_inode(old_dir, res.fromattr); |
460 | nfs_post_op_update_inode(new_dir, res.toattr); | |
461 | out: | |
462 | nfs_free_fattr(res.toattr); | |
463 | nfs_free_fattr(res.fromattr); | |
1da177e4 LT |
464 | dprintk("NFS reply rename: %d\n", status); |
465 | return status; | |
466 | } | |
467 | ||
468 | static int | |
469 | nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name) | |
470 | { | |
471 | struct nfs_fattr dir_attr, fattr; | |
472 | struct nfs3_linkargs arg = { | |
473 | .fromfh = NFS_FH(inode), | |
474 | .tofh = NFS_FH(dir), | |
475 | .toname = name->name, | |
476 | .tolen = name->len | |
477 | }; | |
478 | struct nfs3_linkres res = { | |
479 | .dir_attr = &dir_attr, | |
480 | .fattr = &fattr | |
481 | }; | |
dead28da CL |
482 | struct rpc_message msg = { |
483 | .rpc_proc = &nfs3_procedures[NFS3PROC_LINK], | |
484 | .rpc_argp = &arg, | |
485 | .rpc_resp = &res, | |
486 | }; | |
1da177e4 LT |
487 | int status; |
488 | ||
489 | dprintk("NFS call link %s\n", name->name); | |
0e574af1 TM |
490 | nfs_fattr_init(&dir_attr); |
491 | nfs_fattr_init(&fattr); | |
dead28da | 492 | status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); |
decf491f TM |
493 | nfs_post_op_update_inode(dir, &dir_attr); |
494 | nfs_post_op_update_inode(inode, &fattr); | |
1da177e4 LT |
495 | dprintk("NFS reply link: %d\n", status); |
496 | return status; | |
497 | } | |
498 | ||
499 | static int | |
94a6d753 CL |
500 | nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page, |
501 | unsigned int len, struct iattr *sattr) | |
1da177e4 | 502 | { |
0b4aae7a TM |
503 | struct nfs3_createdata *data; |
504 | int status = -ENOMEM; | |
1da177e4 | 505 | |
94a6d753 | 506 | if (len > NFS3_MAXPATHLEN) |
1da177e4 | 507 | return -ENAMETOOLONG; |
4f390c15 | 508 | |
94a6d753 CL |
509 | dprintk("NFS call symlink %s\n", dentry->d_name.name); |
510 | ||
0b4aae7a TM |
511 | data = nfs3_alloc_createdata(); |
512 | if (data == NULL) | |
4f390c15 | 513 | goto out; |
0b4aae7a TM |
514 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK]; |
515 | data->arg.symlink.fromfh = NFS_FH(dir); | |
516 | data->arg.symlink.fromname = dentry->d_name.name; | |
517 | data->arg.symlink.fromlen = dentry->d_name.len; | |
518 | data->arg.symlink.pages = &page; | |
519 | data->arg.symlink.pathlen = len; | |
520 | data->arg.symlink.sattr = sattr; | |
521 | ||
522 | status = nfs3_do_create(dir, dentry, data); | |
523 | ||
524 | nfs3_free_createdata(data); | |
4f390c15 | 525 | out: |
1da177e4 LT |
526 | dprintk("NFS reply symlink: %d\n", status); |
527 | return status; | |
528 | } | |
529 | ||
530 | static int | |
531 | nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr) | |
532 | { | |
0b4aae7a | 533 | struct nfs3_createdata *data; |
055ffbea | 534 | int mode = sattr->ia_mode; |
0b4aae7a | 535 | int status = -ENOMEM; |
1da177e4 LT |
536 | |
537 | dprintk("NFS call mkdir %s\n", dentry->d_name.name); | |
055ffbea | 538 | |
ce3b0f8d | 539 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 540 | |
0b4aae7a TM |
541 | data = nfs3_alloc_createdata(); |
542 | if (data == NULL) | |
055ffbea | 543 | goto out; |
0b4aae7a TM |
544 | |
545 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR]; | |
546 | data->arg.mkdir.fh = NFS_FH(dir); | |
547 | data->arg.mkdir.name = dentry->d_name.name; | |
548 | data->arg.mkdir.len = dentry->d_name.len; | |
549 | data->arg.mkdir.sattr = sattr; | |
550 | ||
551 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
552 | if (status != 0) |
553 | goto out; | |
0b4aae7a | 554 | |
055ffbea AG |
555 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); |
556 | out: | |
0b4aae7a | 557 | nfs3_free_createdata(data); |
1da177e4 LT |
558 | dprintk("NFS reply mkdir: %d\n", status); |
559 | return status; | |
560 | } | |
561 | ||
562 | static int | |
563 | nfs3_proc_rmdir(struct inode *dir, struct qstr *name) | |
564 | { | |
565 | struct nfs_fattr dir_attr; | |
566 | struct nfs3_diropargs arg = { | |
567 | .fh = NFS_FH(dir), | |
568 | .name = name->name, | |
569 | .len = name->len | |
570 | }; | |
dead28da CL |
571 | struct rpc_message msg = { |
572 | .rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR], | |
573 | .rpc_argp = &arg, | |
574 | .rpc_resp = &dir_attr, | |
575 | }; | |
1da177e4 LT |
576 | int status; |
577 | ||
578 | dprintk("NFS call rmdir %s\n", name->name); | |
0e574af1 | 579 | nfs_fattr_init(&dir_attr); |
dead28da | 580 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
decf491f | 581 | nfs_post_op_update_inode(dir, &dir_attr); |
1da177e4 LT |
582 | dprintk("NFS reply rmdir: %d\n", status); |
583 | return status; | |
584 | } | |
585 | ||
586 | /* | |
587 | * The READDIR implementation is somewhat hackish - we pass the user buffer | |
588 | * to the encode function, which installs it in the receive iovec. | |
589 | * The decode function itself doesn't perform any decoding, it just makes | |
590 | * sure the reply is syntactically correct. | |
591 | * | |
592 | * Also note that this implementation handles both plain readdir and | |
593 | * readdirplus. | |
594 | */ | |
595 | static int | |
596 | nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred, | |
597 | u64 cookie, struct page *page, unsigned int count, int plus) | |
598 | { | |
599 | struct inode *dir = dentry->d_inode; | |
600 | struct nfs_fattr dir_attr; | |
bc4785cd | 601 | __be32 *verf = NFS_COOKIEVERF(dir); |
1da177e4 LT |
602 | struct nfs3_readdirargs arg = { |
603 | .fh = NFS_FH(dir), | |
604 | .cookie = cookie, | |
605 | .verf = {verf[0], verf[1]}, | |
606 | .plus = plus, | |
607 | .count = count, | |
608 | .pages = &page | |
609 | }; | |
610 | struct nfs3_readdirres res = { | |
611 | .dir_attr = &dir_attr, | |
612 | .verf = verf, | |
613 | .plus = plus | |
614 | }; | |
615 | struct rpc_message msg = { | |
616 | .rpc_proc = &nfs3_procedures[NFS3PROC_READDIR], | |
617 | .rpc_argp = &arg, | |
618 | .rpc_resp = &res, | |
619 | .rpc_cred = cred | |
620 | }; | |
621 | int status; | |
622 | ||
1da177e4 LT |
623 | if (plus) |
624 | msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS]; | |
625 | ||
626 | dprintk("NFS call readdir%s %d\n", | |
627 | plus? "plus" : "", (unsigned int) cookie); | |
628 | ||
0e574af1 | 629 | nfs_fattr_init(&dir_attr); |
1da177e4 | 630 | status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); |
c4812998 TM |
631 | |
632 | nfs_invalidate_atime(dir); | |
633 | ||
1da177e4 LT |
634 | nfs_refresh_inode(dir, &dir_attr); |
635 | dprintk("NFS reply readdir: %d\n", status); | |
1da177e4 LT |
636 | return status; |
637 | } | |
638 | ||
639 | static int | |
640 | nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr, | |
641 | dev_t rdev) | |
642 | { | |
0b4aae7a | 643 | struct nfs3_createdata *data; |
055ffbea | 644 | mode_t mode = sattr->ia_mode; |
0b4aae7a | 645 | int status = -ENOMEM; |
1da177e4 LT |
646 | |
647 | dprintk("NFS call mknod %s %u:%u\n", dentry->d_name.name, | |
648 | MAJOR(rdev), MINOR(rdev)); | |
055ffbea | 649 | |
ce3b0f8d | 650 | sattr->ia_mode &= ~current_umask(); |
055ffbea | 651 | |
0b4aae7a TM |
652 | data = nfs3_alloc_createdata(); |
653 | if (data == NULL) | |
055ffbea | 654 | goto out; |
0b4aae7a TM |
655 | |
656 | data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD]; | |
657 | data->arg.mknod.fh = NFS_FH(dir); | |
658 | data->arg.mknod.name = dentry->d_name.name; | |
659 | data->arg.mknod.len = dentry->d_name.len; | |
660 | data->arg.mknod.sattr = sattr; | |
661 | data->arg.mknod.rdev = rdev; | |
662 | ||
663 | switch (sattr->ia_mode & S_IFMT) { | |
664 | case S_IFBLK: | |
665 | data->arg.mknod.type = NF3BLK; | |
666 | break; | |
667 | case S_IFCHR: | |
668 | data->arg.mknod.type = NF3CHR; | |
669 | break; | |
670 | case S_IFIFO: | |
671 | data->arg.mknod.type = NF3FIFO; | |
672 | break; | |
673 | case S_IFSOCK: | |
674 | data->arg.mknod.type = NF3SOCK; | |
675 | break; | |
676 | default: | |
677 | status = -EINVAL; | |
678 | goto out; | |
679 | } | |
680 | ||
681 | status = nfs3_do_create(dir, dentry, data); | |
055ffbea AG |
682 | if (status != 0) |
683 | goto out; | |
684 | status = nfs3_proc_set_default_acl(dir, dentry->d_inode, mode); | |
685 | out: | |
0b4aae7a | 686 | nfs3_free_createdata(data); |
1da177e4 LT |
687 | dprintk("NFS reply mknod: %d\n", status); |
688 | return status; | |
689 | } | |
690 | ||
691 | static int | |
692 | nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle, | |
693 | struct nfs_fsstat *stat) | |
694 | { | |
dead28da CL |
695 | struct rpc_message msg = { |
696 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT], | |
697 | .rpc_argp = fhandle, | |
698 | .rpc_resp = stat, | |
699 | }; | |
1da177e4 LT |
700 | int status; |
701 | ||
702 | dprintk("NFS call fsstat\n"); | |
0e574af1 | 703 | nfs_fattr_init(stat->fattr); |
dead28da | 704 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
705 | dprintk("NFS reply statfs: %d\n", status); |
706 | return status; | |
707 | } | |
708 | ||
709 | static int | |
37ca8f5c | 710 | do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle, |
1da177e4 LT |
711 | struct nfs_fsinfo *info) |
712 | { | |
dead28da CL |
713 | struct rpc_message msg = { |
714 | .rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO], | |
715 | .rpc_argp = fhandle, | |
716 | .rpc_resp = info, | |
717 | }; | |
1da177e4 LT |
718 | int status; |
719 | ||
720 | dprintk("NFS call fsinfo\n"); | |
0e574af1 | 721 | nfs_fattr_init(info->fattr); |
37ca8f5c | 722 | status = rpc_call_sync(client, &msg, 0); |
1da177e4 LT |
723 | dprintk("NFS reply fsinfo: %d\n", status); |
724 | return status; | |
725 | } | |
726 | ||
37ca8f5c EK |
727 | /* |
728 | * Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via | |
729 | * nfs_create_server | |
730 | */ | |
731 | static int | |
732 | nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, | |
733 | struct nfs_fsinfo *info) | |
734 | { | |
735 | int status; | |
736 | ||
737 | status = do_proc_fsinfo(server->client, fhandle, info); | |
738 | if (status && server->nfs_client->cl_rpcclient != server->client) | |
739 | status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info); | |
740 | return status; | |
741 | } | |
742 | ||
1da177e4 LT |
743 | static int |
744 | nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle, | |
745 | struct nfs_pathconf *info) | |
746 | { | |
dead28da CL |
747 | struct rpc_message msg = { |
748 | .rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF], | |
749 | .rpc_argp = fhandle, | |
750 | .rpc_resp = info, | |
751 | }; | |
1da177e4 LT |
752 | int status; |
753 | ||
754 | dprintk("NFS call pathconf\n"); | |
0e574af1 | 755 | nfs_fattr_init(info->fattr); |
dead28da | 756 | status = rpc_call_sync(server->client, &msg, 0); |
1da177e4 LT |
757 | dprintk("NFS reply pathconf: %d\n", status); |
758 | return status; | |
759 | } | |
760 | ||
ec06c096 | 761 | static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data) |
1da177e4 | 762 | { |
006ea73e | 763 | if (nfs3_async_handle_jukebox(task, data->inode)) |
ec06c096 | 764 | return -EAGAIN; |
8850df99 TM |
765 | |
766 | nfs_invalidate_atime(data->inode); | |
767 | nfs_refresh_inode(data->inode, &data->fattr); | |
ec06c096 | 768 | return 0; |
1da177e4 LT |
769 | } |
770 | ||
bdc7f021 | 771 | static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg) |
1da177e4 | 772 | { |
bdc7f021 | 773 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ]; |
1da177e4 LT |
774 | } |
775 | ||
788e7a89 | 776 | static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 777 | { |
006ea73e | 778 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 779 | return -EAGAIN; |
1da177e4 | 780 | if (task->tk_status >= 0) |
70ca8852 | 781 | nfs_post_op_update_inode_force_wcc(data->inode, data->res.fattr); |
788e7a89 | 782 | return 0; |
1da177e4 LT |
783 | } |
784 | ||
bdc7f021 | 785 | static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 786 | { |
bdc7f021 | 787 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE]; |
1da177e4 LT |
788 | } |
789 | ||
788e7a89 | 790 | static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data) |
1da177e4 | 791 | { |
006ea73e | 792 | if (nfs3_async_handle_jukebox(task, data->inode)) |
788e7a89 | 793 | return -EAGAIN; |
9e08a3c5 | 794 | nfs_refresh_inode(data->inode, data->res.fattr); |
788e7a89 | 795 | return 0; |
1da177e4 LT |
796 | } |
797 | ||
bdc7f021 | 798 | static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg) |
1da177e4 | 799 | { |
bdc7f021 | 800 | msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT]; |
1da177e4 LT |
801 | } |
802 | ||
803 | static int | |
804 | nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl) | |
805 | { | |
1093a60e CL |
806 | struct inode *inode = filp->f_path.dentry->d_inode; |
807 | ||
808 | return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl); | |
1da177e4 LT |
809 | } |
810 | ||
509de811 | 811 | const struct nfs_rpc_ops nfs_v3_clientops = { |
1da177e4 LT |
812 | .version = 3, /* protocol version */ |
813 | .dentry_ops = &nfs_dentry_operations, | |
b7fa0554 AG |
814 | .dir_inode_ops = &nfs3_dir_inode_operations, |
815 | .file_inode_ops = &nfs3_file_inode_operations, | |
1da177e4 LT |
816 | .getroot = nfs3_proc_get_root, |
817 | .getattr = nfs3_proc_getattr, | |
818 | .setattr = nfs3_proc_setattr, | |
819 | .lookup = nfs3_proc_lookup, | |
820 | .access = nfs3_proc_access, | |
821 | .readlink = nfs3_proc_readlink, | |
1da177e4 LT |
822 | .create = nfs3_proc_create, |
823 | .remove = nfs3_proc_remove, | |
824 | .unlink_setup = nfs3_proc_unlink_setup, | |
825 | .unlink_done = nfs3_proc_unlink_done, | |
826 | .rename = nfs3_proc_rename, | |
827 | .link = nfs3_proc_link, | |
828 | .symlink = nfs3_proc_symlink, | |
829 | .mkdir = nfs3_proc_mkdir, | |
830 | .rmdir = nfs3_proc_rmdir, | |
831 | .readdir = nfs3_proc_readdir, | |
832 | .mknod = nfs3_proc_mknod, | |
833 | .statfs = nfs3_proc_statfs, | |
834 | .fsinfo = nfs3_proc_fsinfo, | |
835 | .pathconf = nfs3_proc_pathconf, | |
836 | .decode_dirent = nfs3_decode_dirent, | |
837 | .read_setup = nfs3_proc_read_setup, | |
ec06c096 | 838 | .read_done = nfs3_read_done, |
1da177e4 | 839 | .write_setup = nfs3_proc_write_setup, |
788e7a89 | 840 | .write_done = nfs3_write_done, |
1da177e4 | 841 | .commit_setup = nfs3_proc_commit_setup, |
788e7a89 | 842 | .commit_done = nfs3_commit_done, |
1da177e4 | 843 | .lock = nfs3_proc_lock, |
5c6a9f7d | 844 | .clear_acl_cache = nfs3_forget_cached_acls, |
7fe5c398 | 845 | .close_context = nfs_close_context, |
1da177e4 | 846 | }; |