Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfsd/nfsctl.c | |
3 | * | |
4 | * Syscall interface to knfsd. | |
5 | * | |
6 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
7 | */ | |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | ||
11 | #include <linux/linkage.h> | |
12 | #include <linux/time.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/fs.h> | |
15 | #include <linux/fcntl.h> | |
16 | #include <linux/net.h> | |
17 | #include <linux/in.h> | |
18 | #include <linux/syscalls.h> | |
19 | #include <linux/unistd.h> | |
20 | #include <linux/slab.h> | |
21 | #include <linux/proc_fs.h> | |
22 | #include <linux/seq_file.h> | |
23 | #include <linux/pagemap.h> | |
24 | #include <linux/init.h> | |
70c3b76c | 25 | #include <linux/string.h> |
80212d59 | 26 | #include <linux/smp_lock.h> |
b41b66d6 | 27 | #include <linux/ctype.h> |
1da177e4 LT |
28 | |
29 | #include <linux/nfs.h> | |
30 | #include <linux/nfsd_idmap.h> | |
b41b66d6 | 31 | #include <linux/lockd/bind.h> |
1da177e4 | 32 | #include <linux/sunrpc/svc.h> |
80212d59 | 33 | #include <linux/sunrpc/svcsock.h> |
1da177e4 LT |
34 | #include <linux/nfsd/nfsd.h> |
35 | #include <linux/nfsd/cache.h> | |
36 | #include <linux/nfsd/xdr.h> | |
37 | #include <linux/nfsd/syscall.h> | |
38 | #include <linux/nfsd/interface.h> | |
39 | ||
40 | #include <asm/uaccess.h> | |
41 | ||
42 | /* | |
43 | * We have a single directory with 9 nodes in it. | |
44 | */ | |
45 | enum { | |
46 | NFSD_Root = 1, | |
47 | NFSD_Svc, | |
48 | NFSD_Add, | |
49 | NFSD_Del, | |
50 | NFSD_Export, | |
51 | NFSD_Unexport, | |
52 | NFSD_Getfd, | |
53 | NFSD_Getfs, | |
54 | NFSD_List, | |
55 | NFSD_Fh, | |
56 | NFSD_Threads, | |
70c3b76c | 57 | NFSD_Versions, |
80212d59 | 58 | NFSD_Ports, |
70c3b76c N |
59 | /* |
60 | * The below MUST come last. Otherwise we leave a hole in nfsd_files[] | |
61 | * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops | |
62 | */ | |
63 | #ifdef CONFIG_NFSD_V4 | |
1da177e4 | 64 | NFSD_Leasetime, |
0964a3d3 | 65 | NFSD_RecoveryDir, |
70c3b76c | 66 | #endif |
1da177e4 LT |
67 | }; |
68 | ||
69 | /* | |
70 | * write() for these nodes. | |
71 | */ | |
72 | static ssize_t write_svc(struct file *file, char *buf, size_t size); | |
73 | static ssize_t write_add(struct file *file, char *buf, size_t size); | |
74 | static ssize_t write_del(struct file *file, char *buf, size_t size); | |
75 | static ssize_t write_export(struct file *file, char *buf, size_t size); | |
76 | static ssize_t write_unexport(struct file *file, char *buf, size_t size); | |
77 | static ssize_t write_getfd(struct file *file, char *buf, size_t size); | |
78 | static ssize_t write_getfs(struct file *file, char *buf, size_t size); | |
79 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size); | |
80 | static ssize_t write_threads(struct file *file, char *buf, size_t size); | |
70c3b76c | 81 | static ssize_t write_versions(struct file *file, char *buf, size_t size); |
80212d59 | 82 | static ssize_t write_ports(struct file *file, char *buf, size_t size); |
70c3b76c | 83 | #ifdef CONFIG_NFSD_V4 |
1da177e4 | 84 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size); |
0964a3d3 | 85 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); |
70c3b76c | 86 | #endif |
1da177e4 LT |
87 | |
88 | static ssize_t (*write_op[])(struct file *, char *, size_t) = { | |
89 | [NFSD_Svc] = write_svc, | |
90 | [NFSD_Add] = write_add, | |
91 | [NFSD_Del] = write_del, | |
92 | [NFSD_Export] = write_export, | |
93 | [NFSD_Unexport] = write_unexport, | |
94 | [NFSD_Getfd] = write_getfd, | |
95 | [NFSD_Getfs] = write_getfs, | |
96 | [NFSD_Fh] = write_filehandle, | |
97 | [NFSD_Threads] = write_threads, | |
70c3b76c | 98 | [NFSD_Versions] = write_versions, |
80212d59 | 99 | [NFSD_Ports] = write_ports, |
70c3b76c | 100 | #ifdef CONFIG_NFSD_V4 |
1da177e4 | 101 | [NFSD_Leasetime] = write_leasetime, |
0964a3d3 | 102 | [NFSD_RecoveryDir] = write_recoverydir, |
70c3b76c | 103 | #endif |
1da177e4 LT |
104 | }; |
105 | ||
106 | static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) | |
107 | { | |
108 | ino_t ino = file->f_dentry->d_inode->i_ino; | |
109 | char *data; | |
110 | ssize_t rv; | |
111 | ||
e8c96f8c | 112 | if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) |
1da177e4 LT |
113 | return -EINVAL; |
114 | ||
115 | data = simple_transaction_get(file, buf, size); | |
116 | if (IS_ERR(data)) | |
117 | return PTR_ERR(data); | |
118 | ||
119 | rv = write_op[ino](file, data, size); | |
120 | if (rv>0) { | |
121 | simple_transaction_set(file, rv); | |
122 | rv = size; | |
123 | } | |
124 | return rv; | |
125 | } | |
126 | ||
7390022d N |
127 | static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) |
128 | { | |
129 | if (! file->private_data) { | |
130 | /* An attempt to read a transaction file without writing | |
131 | * causes a 0-byte write so that the file can return | |
132 | * state information | |
133 | */ | |
134 | ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); | |
135 | if (rv < 0) | |
136 | return rv; | |
137 | } | |
138 | return simple_transaction_read(file, buf, size, pos); | |
139 | } | |
140 | ||
4b6f5d20 | 141 | static const struct file_operations transaction_ops = { |
1da177e4 | 142 | .write = nfsctl_transaction_write, |
7390022d | 143 | .read = nfsctl_transaction_read, |
1da177e4 LT |
144 | .release = simple_transaction_release, |
145 | }; | |
146 | ||
147 | extern struct seq_operations nfs_exports_op; | |
148 | static int exports_open(struct inode *inode, struct file *file) | |
149 | { | |
150 | return seq_open(file, &nfs_exports_op); | |
151 | } | |
152 | ||
4b6f5d20 | 153 | static const struct file_operations exports_operations = { |
1da177e4 LT |
154 | .open = exports_open, |
155 | .read = seq_read, | |
156 | .llseek = seq_lseek, | |
157 | .release = seq_release, | |
158 | }; | |
159 | ||
160 | /*----------------------------------------------------------------------------*/ | |
161 | /* | |
162 | * payload - write methods | |
163 | * If the method has a response, the response should be put in buf, | |
164 | * and the length returned. Otherwise return 0 or and -error. | |
165 | */ | |
166 | ||
167 | static ssize_t write_svc(struct file *file, char *buf, size_t size) | |
168 | { | |
169 | struct nfsctl_svc *data; | |
170 | if (size < sizeof(*data)) | |
171 | return -EINVAL; | |
172 | data = (struct nfsctl_svc*) buf; | |
173 | return nfsd_svc(data->svc_port, data->svc_nthreads); | |
174 | } | |
175 | ||
176 | static ssize_t write_add(struct file *file, char *buf, size_t size) | |
177 | { | |
178 | struct nfsctl_client *data; | |
179 | if (size < sizeof(*data)) | |
180 | return -EINVAL; | |
181 | data = (struct nfsctl_client *)buf; | |
182 | return exp_addclient(data); | |
183 | } | |
184 | ||
185 | static ssize_t write_del(struct file *file, char *buf, size_t size) | |
186 | { | |
187 | struct nfsctl_client *data; | |
188 | if (size < sizeof(*data)) | |
189 | return -EINVAL; | |
190 | data = (struct nfsctl_client *)buf; | |
191 | return exp_delclient(data); | |
192 | } | |
193 | ||
194 | static ssize_t write_export(struct file *file, char *buf, size_t size) | |
195 | { | |
196 | struct nfsctl_export *data; | |
197 | if (size < sizeof(*data)) | |
198 | return -EINVAL; | |
199 | data = (struct nfsctl_export*)buf; | |
200 | return exp_export(data); | |
201 | } | |
202 | ||
203 | static ssize_t write_unexport(struct file *file, char *buf, size_t size) | |
204 | { | |
205 | struct nfsctl_export *data; | |
206 | ||
207 | if (size < sizeof(*data)) | |
208 | return -EINVAL; | |
209 | data = (struct nfsctl_export*)buf; | |
210 | return exp_unexport(data); | |
211 | } | |
212 | ||
213 | static ssize_t write_getfs(struct file *file, char *buf, size_t size) | |
214 | { | |
215 | struct nfsctl_fsparm *data; | |
216 | struct sockaddr_in *sin; | |
217 | struct auth_domain *clp; | |
218 | int err = 0; | |
219 | struct knfsd_fh *res; | |
220 | ||
221 | if (size < sizeof(*data)) | |
222 | return -EINVAL; | |
223 | data = (struct nfsctl_fsparm*)buf; | |
224 | err = -EPROTONOSUPPORT; | |
225 | if (data->gd_addr.sa_family != AF_INET) | |
226 | goto out; | |
227 | sin = (struct sockaddr_in *)&data->gd_addr; | |
228 | if (data->gd_maxlen > NFS3_FHSIZE) | |
229 | data->gd_maxlen = NFS3_FHSIZE; | |
230 | ||
231 | res = (struct knfsd_fh*)buf; | |
232 | ||
233 | exp_readlock(); | |
234 | if (!(clp = auth_unix_lookup(sin->sin_addr))) | |
235 | err = -EPERM; | |
236 | else { | |
237 | err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen); | |
238 | auth_domain_put(clp); | |
239 | } | |
240 | exp_readunlock(); | |
241 | if (err == 0) | |
242 | err = res->fh_size + (int)&((struct knfsd_fh*)0)->fh_base; | |
243 | out: | |
244 | return err; | |
245 | } | |
246 | ||
247 | static ssize_t write_getfd(struct file *file, char *buf, size_t size) | |
248 | { | |
249 | struct nfsctl_fdparm *data; | |
250 | struct sockaddr_in *sin; | |
251 | struct auth_domain *clp; | |
252 | int err = 0; | |
253 | struct knfsd_fh fh; | |
254 | char *res; | |
255 | ||
256 | if (size < sizeof(*data)) | |
257 | return -EINVAL; | |
258 | data = (struct nfsctl_fdparm*)buf; | |
259 | err = -EPROTONOSUPPORT; | |
260 | if (data->gd_addr.sa_family != AF_INET) | |
261 | goto out; | |
262 | err = -EINVAL; | |
263 | if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS) | |
264 | goto out; | |
265 | ||
266 | res = buf; | |
267 | sin = (struct sockaddr_in *)&data->gd_addr; | |
268 | exp_readlock(); | |
269 | if (!(clp = auth_unix_lookup(sin->sin_addr))) | |
270 | err = -EPERM; | |
271 | else { | |
272 | err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE); | |
273 | auth_domain_put(clp); | |
274 | } | |
275 | exp_readunlock(); | |
276 | ||
277 | if (err == 0) { | |
278 | memset(res,0, NFS_FHSIZE); | |
279 | memcpy(res, &fh.fh_base, fh.fh_size); | |
280 | err = NFS_FHSIZE; | |
281 | } | |
282 | out: | |
283 | return err; | |
284 | } | |
285 | ||
286 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size) | |
287 | { | |
288 | /* request is: | |
289 | * domain path maxsize | |
290 | * response is | |
291 | * filehandle | |
292 | * | |
293 | * qword quoting is used, so filehandle will be \x.... | |
294 | */ | |
295 | char *dname, *path; | |
296 | int maxsize; | |
297 | char *mesg = buf; | |
298 | int len; | |
299 | struct auth_domain *dom; | |
300 | struct knfsd_fh fh; | |
301 | ||
302 | if (buf[size-1] != '\n') | |
303 | return -EINVAL; | |
304 | buf[size-1] = 0; | |
305 | ||
306 | dname = mesg; | |
307 | len = qword_get(&mesg, dname, size); | |
308 | if (len <= 0) return -EINVAL; | |
309 | ||
310 | path = dname+len+1; | |
311 | len = qword_get(&mesg, path, size); | |
312 | if (len <= 0) return -EINVAL; | |
313 | ||
314 | len = get_int(&mesg, &maxsize); | |
315 | if (len) | |
316 | return len; | |
317 | ||
318 | if (maxsize < NFS_FHSIZE) | |
319 | return -EINVAL; | |
320 | if (maxsize > NFS3_FHSIZE) | |
321 | maxsize = NFS3_FHSIZE; | |
322 | ||
323 | if (qword_get(&mesg, mesg, size)>0) | |
324 | return -EINVAL; | |
325 | ||
326 | /* we have all the words, they are in buf.. */ | |
327 | dom = unix_domain_find(dname); | |
328 | if (!dom) | |
329 | return -ENOMEM; | |
330 | ||
331 | len = exp_rootfh(dom, path, &fh, maxsize); | |
332 | auth_domain_put(dom); | |
333 | if (len) | |
334 | return len; | |
335 | ||
336 | mesg = buf; len = SIMPLE_TRANSACTION_LIMIT; | |
337 | qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); | |
338 | mesg[-1] = '\n'; | |
339 | return mesg - buf; | |
340 | } | |
341 | ||
342 | extern int nfsd_nrthreads(void); | |
343 | ||
344 | static ssize_t write_threads(struct file *file, char *buf, size_t size) | |
345 | { | |
346 | /* if size > 0, look for a number of threads and call nfsd_svc | |
347 | * then write out number of threads as reply | |
348 | */ | |
349 | char *mesg = buf; | |
350 | int rv; | |
351 | if (size > 0) { | |
352 | int newthreads; | |
353 | rv = get_int(&mesg, &newthreads); | |
354 | if (rv) | |
355 | return rv; | |
356 | if (newthreads <0) | |
357 | return -EINVAL; | |
358 | rv = nfsd_svc(2049, newthreads); | |
359 | if (rv) | |
360 | return rv; | |
361 | } | |
362 | sprintf(buf, "%d\n", nfsd_nrthreads()); | |
363 | return strlen(buf); | |
364 | } | |
365 | ||
70c3b76c N |
366 | static ssize_t write_versions(struct file *file, char *buf, size_t size) |
367 | { | |
368 | /* | |
369 | * Format: | |
370 | * [-/+]vers [-/+]vers ... | |
371 | */ | |
372 | char *mesg = buf; | |
373 | char *vers, sign; | |
374 | int len, num; | |
375 | ssize_t tlen = 0; | |
376 | char *sep; | |
377 | ||
378 | if (size>0) { | |
379 | if (nfsd_serv) | |
6658d3a7 N |
380 | /* Cannot change versions without updating |
381 | * nfsd_serv->sv_xdrsize, and reallocing | |
382 | * rq_argp and rq_resp | |
383 | */ | |
70c3b76c N |
384 | return -EBUSY; |
385 | if (buf[size-1] != '\n') | |
386 | return -EINVAL; | |
387 | buf[size-1] = 0; | |
388 | ||
389 | vers = mesg; | |
390 | len = qword_get(&mesg, vers, size); | |
391 | if (len <= 0) return -EINVAL; | |
392 | do { | |
393 | sign = *vers; | |
394 | if (sign == '+' || sign == '-') | |
395 | num = simple_strtol((vers+1), NULL, 0); | |
396 | else | |
397 | num = simple_strtol(vers, NULL, 0); | |
398 | switch(num) { | |
399 | case 2: | |
400 | case 3: | |
401 | case 4: | |
6658d3a7 | 402 | nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c N |
403 | break; |
404 | default: | |
405 | return -EINVAL; | |
406 | } | |
407 | vers += len + 1; | |
408 | tlen += len; | |
409 | } while ((len = qword_get(&mesg, vers, size)) > 0); | |
410 | /* If all get turned off, turn them back on, as | |
411 | * having no versions is BAD | |
412 | */ | |
6658d3a7 | 413 | nfsd_reset_versions(); |
70c3b76c N |
414 | } |
415 | /* Now write current state into reply buffer */ | |
416 | len = 0; | |
417 | sep = ""; | |
418 | for (num=2 ; num <= 4 ; num++) | |
6658d3a7 | 419 | if (nfsd_vers(num, NFSD_AVAIL)) { |
70c3b76c | 420 | len += sprintf(buf+len, "%s%c%d", sep, |
6658d3a7 | 421 | nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c N |
422 | num); |
423 | sep = " "; | |
424 | } | |
425 | len += sprintf(buf+len, "\n"); | |
426 | return len; | |
427 | } | |
428 | ||
80212d59 N |
429 | static ssize_t write_ports(struct file *file, char *buf, size_t size) |
430 | { | |
b41b66d6 N |
431 | if (size == 0) { |
432 | int len = 0; | |
433 | lock_kernel(); | |
434 | if (nfsd_serv) | |
435 | len = svc_sock_names(buf, nfsd_serv, NULL); | |
436 | unlock_kernel(); | |
437 | return len; | |
438 | } | |
439 | /* Either a single 'fd' number is written, in which | |
440 | * case it must be for a socket of a supported family/protocol, | |
441 | * and we use it as an nfsd socket, or | |
442 | * A '-' followed by the 'name' of a socket in which case | |
443 | * we close the socket. | |
80212d59 | 444 | */ |
b41b66d6 N |
445 | if (isdigit(buf[0])) { |
446 | char *mesg = buf; | |
447 | int fd; | |
448 | int err; | |
449 | err = get_int(&mesg, &fd); | |
450 | if (err) | |
451 | return -EINVAL; | |
452 | if (fd < 0) | |
453 | return -EINVAL; | |
454 | err = nfsd_create_serv(); | |
455 | if (!err) { | |
456 | int proto = 0; | |
457 | err = svc_addsock(nfsd_serv, fd, buf, &proto); | |
458 | /* Decrease the count, but don't shutdown the | |
459 | * the service | |
460 | */ | |
461 | if (err >= 0) | |
462 | lockd_up(proto); | |
463 | nfsd_serv->sv_nrthreads--; | |
464 | } | |
465 | return err; | |
466 | } | |
467 | if (buf[0] == '-') { | |
468 | char *toclose = kstrdup(buf+1, GFP_KERNEL); | |
469 | int len = 0; | |
470 | if (!toclose) | |
471 | return -ENOMEM; | |
472 | lock_kernel(); | |
473 | if (nfsd_serv) | |
474 | len = svc_sock_names(buf, nfsd_serv, toclose); | |
475 | unlock_kernel(); | |
476 | kfree(toclose); | |
477 | return len; | |
478 | } | |
479 | return -EINVAL; | |
80212d59 N |
480 | } |
481 | ||
70c3b76c | 482 | #ifdef CONFIG_NFSD_V4 |
1da177e4 LT |
483 | extern time_t nfs4_leasetime(void); |
484 | ||
485 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size) | |
486 | { | |
487 | /* if size > 10 seconds, call | |
488 | * nfs4_reset_lease() then write out the new lease (seconds) as reply | |
489 | */ | |
490 | char *mesg = buf; | |
491 | int rv; | |
492 | ||
493 | if (size > 0) { | |
494 | int lease; | |
495 | rv = get_int(&mesg, &lease); | |
496 | if (rv) | |
497 | return rv; | |
498 | if (lease < 10 || lease > 3600) | |
499 | return -EINVAL; | |
500 | nfs4_reset_lease(lease); | |
501 | } | |
502 | sprintf(buf, "%ld\n", nfs4_lease_time()); | |
503 | return strlen(buf); | |
504 | } | |
505 | ||
0964a3d3 N |
506 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) |
507 | { | |
508 | char *mesg = buf; | |
509 | char *recdir; | |
510 | int len, status; | |
511 | ||
512 | if (size > PATH_MAX || buf[size-1] != '\n') | |
513 | return -EINVAL; | |
514 | buf[size-1] = 0; | |
515 | ||
516 | recdir = mesg; | |
517 | len = qword_get(&mesg, recdir, size); | |
518 | if (len <= 0) | |
519 | return -EINVAL; | |
520 | ||
521 | status = nfs4_reset_recoverydir(recdir); | |
522 | return strlen(buf); | |
523 | } | |
70c3b76c | 524 | #endif |
0964a3d3 | 525 | |
1da177e4 LT |
526 | /*----------------------------------------------------------------------------*/ |
527 | /* | |
528 | * populating the filesystem. | |
529 | */ | |
530 | ||
531 | static int nfsd_fill_super(struct super_block * sb, void * data, int silent) | |
532 | { | |
533 | static struct tree_descr nfsd_files[] = { | |
534 | [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR}, | |
535 | [NFSD_Add] = {".add", &transaction_ops, S_IWUSR}, | |
536 | [NFSD_Del] = {".del", &transaction_ops, S_IWUSR}, | |
537 | [NFSD_Export] = {".export", &transaction_ops, S_IWUSR}, | |
538 | [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR}, | |
539 | [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR}, | |
540 | [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR}, | |
541 | [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, | |
542 | [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, | |
543 | [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, | |
70c3b76c | 544 | [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59 | 545 | [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
1da177e4 LT |
546 | #ifdef CONFIG_NFSD_V4 |
547 | [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, | |
0964a3d3 | 548 | [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4 LT |
549 | #endif |
550 | /* last one */ {""} | |
551 | }; | |
552 | return simple_fill_super(sb, 0x6e667364, nfsd_files); | |
553 | } | |
554 | ||
454e2398 DH |
555 | static int nfsd_get_sb(struct file_system_type *fs_type, |
556 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) | |
1da177e4 | 557 | { |
454e2398 | 558 | return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt); |
1da177e4 LT |
559 | } |
560 | ||
561 | static struct file_system_type nfsd_fs_type = { | |
562 | .owner = THIS_MODULE, | |
563 | .name = "nfsd", | |
564 | .get_sb = nfsd_get_sb, | |
565 | .kill_sb = kill_litter_super, | |
566 | }; | |
567 | ||
568 | static int __init init_nfsd(void) | |
569 | { | |
570 | int retval; | |
571 | printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); | |
572 | ||
573 | nfsd_stat_init(); /* Statistics */ | |
574 | nfsd_cache_init(); /* RPC reply cache */ | |
575 | nfsd_export_init(); /* Exports table */ | |
576 | nfsd_lockd_init(); /* lockd->nfsd callbacks */ | |
ac4d8ff2 | 577 | nfs4_state_init(); /* NFSv4 locking state */ |
1da177e4 | 578 | nfsd_idmap_init(); /* Name to ID mapping */ |
1da177e4 LT |
579 | if (proc_mkdir("fs/nfs", NULL)) { |
580 | struct proc_dir_entry *entry; | |
581 | entry = create_proc_entry("fs/nfs/exports", 0, NULL); | |
582 | if (entry) | |
583 | entry->proc_fops = &exports_operations; | |
584 | } | |
585 | retval = register_filesystem(&nfsd_fs_type); | |
586 | if (retval) { | |
587 | nfsd_export_shutdown(); | |
588 | nfsd_cache_shutdown(); | |
589 | remove_proc_entry("fs/nfs/exports", NULL); | |
590 | remove_proc_entry("fs/nfs", NULL); | |
591 | nfsd_stat_shutdown(); | |
592 | nfsd_lockd_shutdown(); | |
593 | } | |
594 | return retval; | |
595 | } | |
596 | ||
597 | static void __exit exit_nfsd(void) | |
598 | { | |
599 | nfsd_export_shutdown(); | |
600 | nfsd_cache_shutdown(); | |
601 | remove_proc_entry("fs/nfs/exports", NULL); | |
602 | remove_proc_entry("fs/nfs", NULL); | |
603 | nfsd_stat_shutdown(); | |
604 | nfsd_lockd_shutdown(); | |
1da177e4 | 605 | nfsd_idmap_shutdown(); |
1da177e4 LT |
606 | unregister_filesystem(&nfsd_fs_type); |
607 | } | |
608 | ||
609 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
610 | MODULE_LICENSE("GPL"); | |
611 | module_init(init_nfsd) | |
612 | module_exit(exit_nfsd) |