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Merge commit 'v2.6.34-rc6'
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / nfsd / nfsctl.c
1 /*
2 * Syscall interface to knfsd.
3 *
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
5 */
6
7 #include <linux/slab.h>
8 #include <linux/namei.h>
9 #include <linux/ctype.h>
10
11 #include <linux/nfsd_idmap.h>
12 #include <linux/sunrpc/svcsock.h>
13 #include <linux/nfsd/syscall.h>
14 #include <linux/lockd/lockd.h>
15 #include <linux/sunrpc/clnt.h>
16
17 #include "nfsd.h"
18 #include "cache.h"
19
20 /*
21 * We have a single directory with 9 nodes in it.
22 */
23 enum {
24 NFSD_Root = 1,
25 NFSD_Svc,
26 NFSD_Add,
27 NFSD_Del,
28 NFSD_Export,
29 NFSD_Unexport,
30 NFSD_Getfd,
31 NFSD_Getfs,
32 NFSD_List,
33 NFSD_Export_features,
34 NFSD_Fh,
35 NFSD_FO_UnlockIP,
36 NFSD_FO_UnlockFS,
37 NFSD_Threads,
38 NFSD_Pool_Threads,
39 NFSD_Pool_Stats,
40 NFSD_Versions,
41 NFSD_Ports,
42 NFSD_MaxBlkSize,
43 /*
44 * The below MUST come last. Otherwise we leave a hole in nfsd_files[]
45 * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
46 */
47 #ifdef CONFIG_NFSD_V4
48 NFSD_Leasetime,
49 NFSD_Gracetime,
50 NFSD_RecoveryDir,
51 #endif
52 };
53
54 /*
55 * write() for these nodes.
56 */
57 static ssize_t write_svc(struct file *file, char *buf, size_t size);
58 static ssize_t write_add(struct file *file, char *buf, size_t size);
59 static ssize_t write_del(struct file *file, char *buf, size_t size);
60 static ssize_t write_export(struct file *file, char *buf, size_t size);
61 static ssize_t write_unexport(struct file *file, char *buf, size_t size);
62 static ssize_t write_getfd(struct file *file, char *buf, size_t size);
63 static ssize_t write_getfs(struct file *file, char *buf, size_t size);
64 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
65 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
66 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
67 static ssize_t write_threads(struct file *file, char *buf, size_t size);
68 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
69 static ssize_t write_versions(struct file *file, char *buf, size_t size);
70 static ssize_t write_ports(struct file *file, char *buf, size_t size);
71 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
72 #ifdef CONFIG_NFSD_V4
73 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
74 static ssize_t write_gracetime(struct file *file, char *buf, size_t size);
75 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
76 #endif
77
78 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
79 [NFSD_Svc] = write_svc,
80 [NFSD_Add] = write_add,
81 [NFSD_Del] = write_del,
82 [NFSD_Export] = write_export,
83 [NFSD_Unexport] = write_unexport,
84 [NFSD_Getfd] = write_getfd,
85 [NFSD_Getfs] = write_getfs,
86 [NFSD_Fh] = write_filehandle,
87 [NFSD_FO_UnlockIP] = write_unlock_ip,
88 [NFSD_FO_UnlockFS] = write_unlock_fs,
89 [NFSD_Threads] = write_threads,
90 [NFSD_Pool_Threads] = write_pool_threads,
91 [NFSD_Versions] = write_versions,
92 [NFSD_Ports] = write_ports,
93 [NFSD_MaxBlkSize] = write_maxblksize,
94 #ifdef CONFIG_NFSD_V4
95 [NFSD_Leasetime] = write_leasetime,
96 [NFSD_Gracetime] = write_gracetime,
97 [NFSD_RecoveryDir] = write_recoverydir,
98 #endif
99 };
100
101 static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
102 {
103 ino_t ino = file->f_path.dentry->d_inode->i_ino;
104 char *data;
105 ssize_t rv;
106
107 if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
108 return -EINVAL;
109
110 data = simple_transaction_get(file, buf, size);
111 if (IS_ERR(data))
112 return PTR_ERR(data);
113
114 rv = write_op[ino](file, data, size);
115 if (rv >= 0) {
116 simple_transaction_set(file, rv);
117 rv = size;
118 }
119 return rv;
120 }
121
122 static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
123 {
124 if (! file->private_data) {
125 /* An attempt to read a transaction file without writing
126 * causes a 0-byte write so that the file can return
127 * state information
128 */
129 ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos);
130 if (rv < 0)
131 return rv;
132 }
133 return simple_transaction_read(file, buf, size, pos);
134 }
135
136 static const struct file_operations transaction_ops = {
137 .write = nfsctl_transaction_write,
138 .read = nfsctl_transaction_read,
139 .release = simple_transaction_release,
140 };
141
142 static int exports_open(struct inode *inode, struct file *file)
143 {
144 return seq_open(file, &nfs_exports_op);
145 }
146
147 static const struct file_operations exports_operations = {
148 .open = exports_open,
149 .read = seq_read,
150 .llseek = seq_lseek,
151 .release = seq_release,
152 .owner = THIS_MODULE,
153 };
154
155 static int export_features_show(struct seq_file *m, void *v)
156 {
157 seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS);
158 return 0;
159 }
160
161 static int export_features_open(struct inode *inode, struct file *file)
162 {
163 return single_open(file, export_features_show, NULL);
164 }
165
166 static struct file_operations export_features_operations = {
167 .open = export_features_open,
168 .read = seq_read,
169 .llseek = seq_lseek,
170 .release = single_release,
171 };
172
173 extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
174 extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
175
176 static const struct file_operations pool_stats_operations = {
177 .open = nfsd_pool_stats_open,
178 .read = seq_read,
179 .llseek = seq_lseek,
180 .release = nfsd_pool_stats_release,
181 .owner = THIS_MODULE,
182 };
183
184 /*----------------------------------------------------------------------------*/
185 /*
186 * payload - write methods
187 */
188
189 /**
190 * write_svc - Start kernel's NFSD server
191 *
192 * Deprecated. /proc/fs/nfsd/threads is preferred.
193 * Function remains to support old versions of nfs-utils.
194 *
195 * Input:
196 * buf: struct nfsctl_svc
197 * svc_port: port number of this
198 * server's listener
199 * svc_nthreads: number of threads to start
200 * size: size in bytes of passed in nfsctl_svc
201 * Output:
202 * On success: returns zero
203 * On error: return code is negative errno value
204 */
205 static ssize_t write_svc(struct file *file, char *buf, size_t size)
206 {
207 struct nfsctl_svc *data;
208 int err;
209 if (size < sizeof(*data))
210 return -EINVAL;
211 data = (struct nfsctl_svc*) buf;
212 err = nfsd_svc(data->svc_port, data->svc_nthreads);
213 if (err < 0)
214 return err;
215 return 0;
216 }
217
218 /**
219 * write_add - Add or modify client entry in auth unix cache
220 *
221 * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
222 * Function remains to support old versions of nfs-utils.
223 *
224 * Input:
225 * buf: struct nfsctl_client
226 * cl_ident: '\0'-terminated C string
227 * containing domain name
228 * of client
229 * cl_naddr: no. of items in cl_addrlist
230 * cl_addrlist: array of client addresses
231 * cl_fhkeytype: ignored
232 * cl_fhkeylen: ignored
233 * cl_fhkey: ignored
234 * size: size in bytes of passed in nfsctl_client
235 * Output:
236 * On success: returns zero
237 * On error: return code is negative errno value
238 *
239 * Note: Only AF_INET client addresses are passed in, since
240 * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
241 */
242 static ssize_t write_add(struct file *file, char *buf, size_t size)
243 {
244 struct nfsctl_client *data;
245 if (size < sizeof(*data))
246 return -EINVAL;
247 data = (struct nfsctl_client *)buf;
248 return exp_addclient(data);
249 }
250
251 /**
252 * write_del - Remove client from auth unix cache
253 *
254 * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
255 * Function remains to support old versions of nfs-utils.
256 *
257 * Input:
258 * buf: struct nfsctl_client
259 * cl_ident: '\0'-terminated C string
260 * containing domain name
261 * of client
262 * cl_naddr: ignored
263 * cl_addrlist: ignored
264 * cl_fhkeytype: ignored
265 * cl_fhkeylen: ignored
266 * cl_fhkey: ignored
267 * size: size in bytes of passed in nfsctl_client
268 * Output:
269 * On success: returns zero
270 * On error: return code is negative errno value
271 *
272 * Note: Only AF_INET client addresses are passed in, since
273 * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
274 */
275 static ssize_t write_del(struct file *file, char *buf, size_t size)
276 {
277 struct nfsctl_client *data;
278 if (size < sizeof(*data))
279 return -EINVAL;
280 data = (struct nfsctl_client *)buf;
281 return exp_delclient(data);
282 }
283
284 /**
285 * write_export - Export part or all of a local file system
286 *
287 * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
288 * Function remains to support old versions of nfs-utils.
289 *
290 * Input:
291 * buf: struct nfsctl_export
292 * ex_client: '\0'-terminated C string
293 * containing domain name
294 * of client allowed to access
295 * this export
296 * ex_path: '\0'-terminated C string
297 * containing pathname of
298 * directory in local file system
299 * ex_dev: fsid to use for this export
300 * ex_ino: ignored
301 * ex_flags: export flags for this export
302 * ex_anon_uid: UID to use for anonymous
303 * requests
304 * ex_anon_gid: GID to use for anonymous
305 * requests
306 * size: size in bytes of passed in nfsctl_export
307 * Output:
308 * On success: returns zero
309 * On error: return code is negative errno value
310 */
311 static ssize_t write_export(struct file *file, char *buf, size_t size)
312 {
313 struct nfsctl_export *data;
314 if (size < sizeof(*data))
315 return -EINVAL;
316 data = (struct nfsctl_export*)buf;
317 return exp_export(data);
318 }
319
320 /**
321 * write_unexport - Unexport a previously exported file system
322 *
323 * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
324 * Function remains to support old versions of nfs-utils.
325 *
326 * Input:
327 * buf: struct nfsctl_export
328 * ex_client: '\0'-terminated C string
329 * containing domain name
330 * of client no longer allowed
331 * to access this export
332 * ex_path: '\0'-terminated C string
333 * containing pathname of
334 * directory in local file system
335 * ex_dev: ignored
336 * ex_ino: ignored
337 * ex_flags: ignored
338 * ex_anon_uid: ignored
339 * ex_anon_gid: ignored
340 * size: size in bytes of passed in nfsctl_export
341 * Output:
342 * On success: returns zero
343 * On error: return code is negative errno value
344 */
345 static ssize_t write_unexport(struct file *file, char *buf, size_t size)
346 {
347 struct nfsctl_export *data;
348
349 if (size < sizeof(*data))
350 return -EINVAL;
351 data = (struct nfsctl_export*)buf;
352 return exp_unexport(data);
353 }
354
355 /**
356 * write_getfs - Get a variable-length NFS file handle by path
357 *
358 * Deprecated. /proc/fs/nfsd/filehandle is preferred.
359 * Function remains to support old versions of nfs-utils.
360 *
361 * Input:
362 * buf: struct nfsctl_fsparm
363 * gd_addr: socket address of client
364 * gd_path: '\0'-terminated C string
365 * containing pathname of
366 * directory in local file system
367 * gd_maxlen: maximum size of returned file
368 * handle
369 * size: size in bytes of passed in nfsctl_fsparm
370 * Output:
371 * On success: passed-in buffer filled with a knfsd_fh structure
372 * (a variable-length raw NFS file handle);
373 * return code is the size in bytes of the file handle
374 * On error: return code is negative errno value
375 *
376 * Note: Only AF_INET client addresses are passed in, since gd_addr
377 * is the same size as a struct sockaddr_in.
378 */
379 static ssize_t write_getfs(struct file *file, char *buf, size_t size)
380 {
381 struct nfsctl_fsparm *data;
382 struct sockaddr_in *sin;
383 struct auth_domain *clp;
384 int err = 0;
385 struct knfsd_fh *res;
386 struct in6_addr in6;
387
388 if (size < sizeof(*data))
389 return -EINVAL;
390 data = (struct nfsctl_fsparm*)buf;
391 err = -EPROTONOSUPPORT;
392 if (data->gd_addr.sa_family != AF_INET)
393 goto out;
394 sin = (struct sockaddr_in *)&data->gd_addr;
395 if (data->gd_maxlen > NFS3_FHSIZE)
396 data->gd_maxlen = NFS3_FHSIZE;
397
398 res = (struct knfsd_fh*)buf;
399
400 exp_readlock();
401
402 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
403
404 clp = auth_unix_lookup(&in6);
405 if (!clp)
406 err = -EPERM;
407 else {
408 err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
409 auth_domain_put(clp);
410 }
411 exp_readunlock();
412 if (err == 0)
413 err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
414 out:
415 return err;
416 }
417
418 /**
419 * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
420 *
421 * Deprecated. /proc/fs/nfsd/filehandle is preferred.
422 * Function remains to support old versions of nfs-utils.
423 *
424 * Input:
425 * buf: struct nfsctl_fdparm
426 * gd_addr: socket address of client
427 * gd_path: '\0'-terminated C string
428 * containing pathname of
429 * directory in local file system
430 * gd_version: fdparm structure version
431 * size: size in bytes of passed in nfsctl_fdparm
432 * Output:
433 * On success: passed-in buffer filled with nfsctl_res
434 * (a fixed-length raw NFS file handle);
435 * return code is the size in bytes of the file handle
436 * On error: return code is negative errno value
437 *
438 * Note: Only AF_INET client addresses are passed in, since gd_addr
439 * is the same size as a struct sockaddr_in.
440 */
441 static ssize_t write_getfd(struct file *file, char *buf, size_t size)
442 {
443 struct nfsctl_fdparm *data;
444 struct sockaddr_in *sin;
445 struct auth_domain *clp;
446 int err = 0;
447 struct knfsd_fh fh;
448 char *res;
449 struct in6_addr in6;
450
451 if (size < sizeof(*data))
452 return -EINVAL;
453 data = (struct nfsctl_fdparm*)buf;
454 err = -EPROTONOSUPPORT;
455 if (data->gd_addr.sa_family != AF_INET)
456 goto out;
457 err = -EINVAL;
458 if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
459 goto out;
460
461 res = buf;
462 sin = (struct sockaddr_in *)&data->gd_addr;
463 exp_readlock();
464
465 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
466
467 clp = auth_unix_lookup(&in6);
468 if (!clp)
469 err = -EPERM;
470 else {
471 err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
472 auth_domain_put(clp);
473 }
474 exp_readunlock();
475
476 if (err == 0) {
477 memset(res,0, NFS_FHSIZE);
478 memcpy(res, &fh.fh_base, fh.fh_size);
479 err = NFS_FHSIZE;
480 }
481 out:
482 return err;
483 }
484
485 /**
486 * write_unlock_ip - Release all locks used by a client
487 *
488 * Experimental.
489 *
490 * Input:
491 * buf: '\n'-terminated C string containing a
492 * presentation format IP address
493 * size: length of C string in @buf
494 * Output:
495 * On success: returns zero if all specified locks were released;
496 * returns one if one or more locks were not released
497 * On error: return code is negative errno value
498 */
499 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
500 {
501 struct sockaddr_storage address;
502 struct sockaddr *sap = (struct sockaddr *)&address;
503 size_t salen = sizeof(address);
504 char *fo_path;
505
506 /* sanity check */
507 if (size == 0)
508 return -EINVAL;
509
510 if (buf[size-1] != '\n')
511 return -EINVAL;
512
513 fo_path = buf;
514 if (qword_get(&buf, fo_path, size) < 0)
515 return -EINVAL;
516
517 if (rpc_pton(fo_path, size, sap, salen) == 0)
518 return -EINVAL;
519
520 return nlmsvc_unlock_all_by_ip(sap);
521 }
522
523 /**
524 * write_unlock_fs - Release all locks on a local file system
525 *
526 * Experimental.
527 *
528 * Input:
529 * buf: '\n'-terminated C string containing the
530 * absolute pathname of a local file system
531 * size: length of C string in @buf
532 * Output:
533 * On success: returns zero if all specified locks were released;
534 * returns one if one or more locks were not released
535 * On error: return code is negative errno value
536 */
537 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
538 {
539 struct path path;
540 char *fo_path;
541 int error;
542
543 /* sanity check */
544 if (size == 0)
545 return -EINVAL;
546
547 if (buf[size-1] != '\n')
548 return -EINVAL;
549
550 fo_path = buf;
551 if (qword_get(&buf, fo_path, size) < 0)
552 return -EINVAL;
553
554 error = kern_path(fo_path, 0, &path);
555 if (error)
556 return error;
557
558 /*
559 * XXX: Needs better sanity checking. Otherwise we could end up
560 * releasing locks on the wrong file system.
561 *
562 * For example:
563 * 1. Does the path refer to a directory?
564 * 2. Is that directory a mount point, or
565 * 3. Is that directory the root of an exported file system?
566 */
567 error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
568
569 path_put(&path);
570 return error;
571 }
572
573 /**
574 * write_filehandle - Get a variable-length NFS file handle by path
575 *
576 * On input, the buffer contains a '\n'-terminated C string comprised of
577 * three alphanumeric words separated by whitespace. The string may
578 * contain escape sequences.
579 *
580 * Input:
581 * buf:
582 * domain: client domain name
583 * path: export pathname
584 * maxsize: numeric maximum size of
585 * @buf
586 * size: length of C string in @buf
587 * Output:
588 * On success: passed-in buffer filled with '\n'-terminated C
589 * string containing a ASCII hex text version
590 * of the NFS file handle;
591 * return code is the size in bytes of the string
592 * On error: return code is negative errno value
593 */
594 static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
595 {
596 char *dname, *path;
597 int uninitialized_var(maxsize);
598 char *mesg = buf;
599 int len;
600 struct auth_domain *dom;
601 struct knfsd_fh fh;
602
603 if (size == 0)
604 return -EINVAL;
605
606 if (buf[size-1] != '\n')
607 return -EINVAL;
608 buf[size-1] = 0;
609
610 dname = mesg;
611 len = qword_get(&mesg, dname, size);
612 if (len <= 0)
613 return -EINVAL;
614
615 path = dname+len+1;
616 len = qword_get(&mesg, path, size);
617 if (len <= 0)
618 return -EINVAL;
619
620 len = get_int(&mesg, &maxsize);
621 if (len)
622 return len;
623
624 if (maxsize < NFS_FHSIZE)
625 return -EINVAL;
626 if (maxsize > NFS3_FHSIZE)
627 maxsize = NFS3_FHSIZE;
628
629 if (qword_get(&mesg, mesg, size)>0)
630 return -EINVAL;
631
632 /* we have all the words, they are in buf.. */
633 dom = unix_domain_find(dname);
634 if (!dom)
635 return -ENOMEM;
636
637 len = exp_rootfh(dom, path, &fh, maxsize);
638 auth_domain_put(dom);
639 if (len)
640 return len;
641
642 mesg = buf;
643 len = SIMPLE_TRANSACTION_LIMIT;
644 qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
645 mesg[-1] = '\n';
646 return mesg - buf;
647 }
648
649 /**
650 * write_threads - Start NFSD, or report the current number of running threads
651 *
652 * Input:
653 * buf: ignored
654 * size: zero
655 * Output:
656 * On success: passed-in buffer filled with '\n'-terminated C
657 * string numeric value representing the number of
658 * running NFSD threads;
659 * return code is the size in bytes of the string
660 * On error: return code is zero
661 *
662 * OR
663 *
664 * Input:
665 * buf: C string containing an unsigned
666 * integer value representing the
667 * number of NFSD threads to start
668 * size: non-zero length of C string in @buf
669 * Output:
670 * On success: NFS service is started;
671 * passed-in buffer filled with '\n'-terminated C
672 * string numeric value representing the number of
673 * running NFSD threads;
674 * return code is the size in bytes of the string
675 * On error: return code is zero or a negative errno value
676 */
677 static ssize_t write_threads(struct file *file, char *buf, size_t size)
678 {
679 char *mesg = buf;
680 int rv;
681 if (size > 0) {
682 int newthreads;
683 rv = get_int(&mesg, &newthreads);
684 if (rv)
685 return rv;
686 if (newthreads < 0)
687 return -EINVAL;
688 rv = nfsd_svc(NFS_PORT, newthreads);
689 if (rv < 0)
690 return rv;
691 } else
692 rv = nfsd_nrthreads();
693
694 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
695 }
696
697 /**
698 * write_pool_threads - Set or report the current number of threads per pool
699 *
700 * Input:
701 * buf: ignored
702 * size: zero
703 *
704 * OR
705 *
706 * Input:
707 * buf: C string containing whitespace-
708 * separated unsigned integer values
709 * representing the number of NFSD
710 * threads to start in each pool
711 * size: non-zero length of C string in @buf
712 * Output:
713 * On success: passed-in buffer filled with '\n'-terminated C
714 * string containing integer values representing the
715 * number of NFSD threads in each pool;
716 * return code is the size in bytes of the string
717 * On error: return code is zero or a negative errno value
718 */
719 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
720 {
721 /* if size > 0, look for an array of number of threads per node
722 * and apply them then write out number of threads per node as reply
723 */
724 char *mesg = buf;
725 int i;
726 int rv;
727 int len;
728 int npools;
729 int *nthreads;
730
731 mutex_lock(&nfsd_mutex);
732 npools = nfsd_nrpools();
733 if (npools == 0) {
734 /*
735 * NFS is shut down. The admin can start it by
736 * writing to the threads file but NOT the pool_threads
737 * file, sorry. Report zero threads.
738 */
739 mutex_unlock(&nfsd_mutex);
740 strcpy(buf, "0\n");
741 return strlen(buf);
742 }
743
744 nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
745 rv = -ENOMEM;
746 if (nthreads == NULL)
747 goto out_free;
748
749 if (size > 0) {
750 for (i = 0; i < npools; i++) {
751 rv = get_int(&mesg, &nthreads[i]);
752 if (rv == -ENOENT)
753 break; /* fewer numbers than pools */
754 if (rv)
755 goto out_free; /* syntax error */
756 rv = -EINVAL;
757 if (nthreads[i] < 0)
758 goto out_free;
759 }
760 rv = nfsd_set_nrthreads(i, nthreads);
761 if (rv)
762 goto out_free;
763 }
764
765 rv = nfsd_get_nrthreads(npools, nthreads);
766 if (rv)
767 goto out_free;
768
769 mesg = buf;
770 size = SIMPLE_TRANSACTION_LIMIT;
771 for (i = 0; i < npools && size > 0; i++) {
772 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
773 len = strlen(mesg);
774 size -= len;
775 mesg += len;
776 }
777 rv = mesg - buf;
778 out_free:
779 kfree(nthreads);
780 mutex_unlock(&nfsd_mutex);
781 return rv;
782 }
783
784 static ssize_t __write_versions(struct file *file, char *buf, size_t size)
785 {
786 char *mesg = buf;
787 char *vers, *minorp, sign;
788 int len, num, remaining;
789 unsigned minor;
790 ssize_t tlen = 0;
791 char *sep;
792
793 if (size>0) {
794 if (nfsd_serv)
795 /* Cannot change versions without updating
796 * nfsd_serv->sv_xdrsize, and reallocing
797 * rq_argp and rq_resp
798 */
799 return -EBUSY;
800 if (buf[size-1] != '\n')
801 return -EINVAL;
802 buf[size-1] = 0;
803
804 vers = mesg;
805 len = qword_get(&mesg, vers, size);
806 if (len <= 0) return -EINVAL;
807 do {
808 sign = *vers;
809 if (sign == '+' || sign == '-')
810 num = simple_strtol((vers+1), &minorp, 0);
811 else
812 num = simple_strtol(vers, &minorp, 0);
813 if (*minorp == '.') {
814 if (num < 4)
815 return -EINVAL;
816 minor = simple_strtoul(minorp+1, NULL, 0);
817 if (minor == 0)
818 return -EINVAL;
819 if (nfsd_minorversion(minor, sign == '-' ?
820 NFSD_CLEAR : NFSD_SET) < 0)
821 return -EINVAL;
822 goto next;
823 }
824 switch(num) {
825 case 2:
826 case 3:
827 case 4:
828 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
829 break;
830 default:
831 return -EINVAL;
832 }
833 next:
834 vers += len + 1;
835 } while ((len = qword_get(&mesg, vers, size)) > 0);
836 /* If all get turned off, turn them back on, as
837 * having no versions is BAD
838 */
839 nfsd_reset_versions();
840 }
841
842 /* Now write current state into reply buffer */
843 len = 0;
844 sep = "";
845 remaining = SIMPLE_TRANSACTION_LIMIT;
846 for (num=2 ; num <= 4 ; num++)
847 if (nfsd_vers(num, NFSD_AVAIL)) {
848 len = snprintf(buf, remaining, "%s%c%d", sep,
849 nfsd_vers(num, NFSD_TEST)?'+':'-',
850 num);
851 sep = " ";
852
853 if (len > remaining)
854 break;
855 remaining -= len;
856 buf += len;
857 tlen += len;
858 }
859 if (nfsd_vers(4, NFSD_AVAIL))
860 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
861 minor++) {
862 len = snprintf(buf, remaining, " %c4.%u",
863 (nfsd_vers(4, NFSD_TEST) &&
864 nfsd_minorversion(minor, NFSD_TEST)) ?
865 '+' : '-',
866 minor);
867
868 if (len > remaining)
869 break;
870 remaining -= len;
871 buf += len;
872 tlen += len;
873 }
874
875 len = snprintf(buf, remaining, "\n");
876 if (len > remaining)
877 return -EINVAL;
878 return tlen + len;
879 }
880
881 /**
882 * write_versions - Set or report the available NFS protocol versions
883 *
884 * Input:
885 * buf: ignored
886 * size: zero
887 * Output:
888 * On success: passed-in buffer filled with '\n'-terminated C
889 * string containing positive or negative integer
890 * values representing the current status of each
891 * protocol version;
892 * return code is the size in bytes of the string
893 * On error: return code is zero or a negative errno value
894 *
895 * OR
896 *
897 * Input:
898 * buf: C string containing whitespace-
899 * separated positive or negative
900 * integer values representing NFS
901 * protocol versions to enable ("+n")
902 * or disable ("-n")
903 * size: non-zero length of C string in @buf
904 * Output:
905 * On success: status of zero or more protocol versions has
906 * been updated; passed-in buffer filled with
907 * '\n'-terminated C string containing positive
908 * or negative integer values representing the
909 * current status of each protocol version;
910 * return code is the size in bytes of the string
911 * On error: return code is zero or a negative errno value
912 */
913 static ssize_t write_versions(struct file *file, char *buf, size_t size)
914 {
915 ssize_t rv;
916
917 mutex_lock(&nfsd_mutex);
918 rv = __write_versions(file, buf, size);
919 mutex_unlock(&nfsd_mutex);
920 return rv;
921 }
922
923 /*
924 * Zero-length write. Return a list of NFSD's current listener
925 * transports.
926 */
927 static ssize_t __write_ports_names(char *buf)
928 {
929 if (nfsd_serv == NULL)
930 return 0;
931 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
932 }
933
934 /*
935 * A single 'fd' number was written, in which case it must be for
936 * a socket of a supported family/protocol, and we use it as an
937 * nfsd listener.
938 */
939 static ssize_t __write_ports_addfd(char *buf)
940 {
941 char *mesg = buf;
942 int fd, err;
943
944 err = get_int(&mesg, &fd);
945 if (err != 0 || fd < 0)
946 return -EINVAL;
947
948 err = nfsd_create_serv();
949 if (err != 0)
950 return err;
951
952 err = lockd_up();
953 if (err != 0)
954 goto out;
955
956 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
957 if (err < 0)
958 lockd_down();
959
960 out:
961 /* Decrease the count, but don't shut down the service */
962 nfsd_serv->sv_nrthreads--;
963 return err;
964 }
965
966 /*
967 * A '-' followed by the 'name' of a socket means we close the socket.
968 */
969 static ssize_t __write_ports_delfd(char *buf)
970 {
971 char *toclose;
972 int len = 0;
973
974 toclose = kstrdup(buf + 1, GFP_KERNEL);
975 if (toclose == NULL)
976 return -ENOMEM;
977
978 if (nfsd_serv != NULL)
979 len = svc_sock_names(nfsd_serv, buf,
980 SIMPLE_TRANSACTION_LIMIT, toclose);
981 if (len >= 0)
982 lockd_down();
983
984 kfree(toclose);
985 return len;
986 }
987
988 /*
989 * A transport listener is added by writing it's transport name and
990 * a port number.
991 */
992 static ssize_t __write_ports_addxprt(char *buf)
993 {
994 char transport[16];
995 struct svc_xprt *xprt;
996 int port, err;
997
998 if (sscanf(buf, "%15s %4u", transport, &port) != 2)
999 return -EINVAL;
1000
1001 if (port < 1 || port > USHORT_MAX)
1002 return -EINVAL;
1003
1004 err = nfsd_create_serv();
1005 if (err != 0)
1006 return err;
1007
1008 err = svc_create_xprt(nfsd_serv, transport,
1009 PF_INET, port, SVC_SOCK_ANONYMOUS);
1010 if (err < 0)
1011 goto out_err;
1012
1013 err = svc_create_xprt(nfsd_serv, transport,
1014 PF_INET6, port, SVC_SOCK_ANONYMOUS);
1015 if (err < 0 && err != -EAFNOSUPPORT)
1016 goto out_close;
1017 return 0;
1018 out_close:
1019 xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port);
1020 if (xprt != NULL) {
1021 svc_close_xprt(xprt);
1022 svc_xprt_put(xprt);
1023 }
1024 out_err:
1025 /* Decrease the count, but don't shut down the service */
1026 nfsd_serv->sv_nrthreads--;
1027 return err;
1028 }
1029
1030 /*
1031 * A transport listener is removed by writing a "-", it's transport
1032 * name, and it's port number.
1033 */
1034 static ssize_t __write_ports_delxprt(char *buf)
1035 {
1036 struct svc_xprt *xprt;
1037 char transport[16];
1038 int port;
1039
1040 if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
1041 return -EINVAL;
1042
1043 if (port < 1 || port > USHORT_MAX || nfsd_serv == NULL)
1044 return -EINVAL;
1045
1046 xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
1047 if (xprt == NULL)
1048 return -ENOTCONN;
1049
1050 svc_close_xprt(xprt);
1051 svc_xprt_put(xprt);
1052 return 0;
1053 }
1054
1055 static ssize_t __write_ports(struct file *file, char *buf, size_t size)
1056 {
1057 if (size == 0)
1058 return __write_ports_names(buf);
1059
1060 if (isdigit(buf[0]))
1061 return __write_ports_addfd(buf);
1062
1063 if (buf[0] == '-' && isdigit(buf[1]))
1064 return __write_ports_delfd(buf);
1065
1066 if (isalpha(buf[0]))
1067 return __write_ports_addxprt(buf);
1068
1069 if (buf[0] == '-' && isalpha(buf[1]))
1070 return __write_ports_delxprt(buf);
1071
1072 return -EINVAL;
1073 }
1074
1075 /**
1076 * write_ports - Pass a socket file descriptor or transport name to listen on
1077 *
1078 * Input:
1079 * buf: ignored
1080 * size: zero
1081 * Output:
1082 * On success: passed-in buffer filled with a '\n'-terminated C
1083 * string containing a whitespace-separated list of
1084 * named NFSD listeners;
1085 * return code is the size in bytes of the string
1086 * On error: return code is zero or a negative errno value
1087 *
1088 * OR
1089 *
1090 * Input:
1091 * buf: C string containing an unsigned
1092 * integer value representing a bound
1093 * but unconnected socket that is to be
1094 * used as an NFSD listener; listen(3)
1095 * must be called for a SOCK_STREAM
1096 * socket, otherwise it is ignored
1097 * size: non-zero length of C string in @buf
1098 * Output:
1099 * On success: NFS service is started;
1100 * passed-in buffer filled with a '\n'-terminated C
1101 * string containing a unique alphanumeric name of
1102 * the listener;
1103 * return code is the size in bytes of the string
1104 * On error: return code is a negative errno value
1105 *
1106 * OR
1107 *
1108 * Input:
1109 * buf: C string containing a "-" followed
1110 * by an integer value representing a
1111 * previously passed in socket file
1112 * descriptor
1113 * size: non-zero length of C string in @buf
1114 * Output:
1115 * On success: NFS service no longer listens on that socket;
1116 * passed-in buffer filled with a '\n'-terminated C
1117 * string containing a unique name of the listener;
1118 * return code is the size in bytes of the string
1119 * On error: return code is a negative errno value
1120 *
1121 * OR
1122 *
1123 * Input:
1124 * buf: C string containing a transport
1125 * name and an unsigned integer value
1126 * representing the port to listen on,
1127 * separated by whitespace
1128 * size: non-zero length of C string in @buf
1129 * Output:
1130 * On success: returns zero; NFS service is started
1131 * On error: return code is a negative errno value
1132 *
1133 * OR
1134 *
1135 * Input:
1136 * buf: C string containing a "-" followed
1137 * by a transport name and an unsigned
1138 * integer value representing the port
1139 * to listen on, separated by whitespace
1140 * size: non-zero length of C string in @buf
1141 * Output:
1142 * On success: returns zero; NFS service no longer listens
1143 * on that transport
1144 * On error: return code is a negative errno value
1145 */
1146 static ssize_t write_ports(struct file *file, char *buf, size_t size)
1147 {
1148 ssize_t rv;
1149
1150 mutex_lock(&nfsd_mutex);
1151 rv = __write_ports(file, buf, size);
1152 mutex_unlock(&nfsd_mutex);
1153 return rv;
1154 }
1155
1156
1157 int nfsd_max_blksize;
1158
1159 /**
1160 * write_maxblksize - Set or report the current NFS blksize
1161 *
1162 * Input:
1163 * buf: ignored
1164 * size: zero
1165 *
1166 * OR
1167 *
1168 * Input:
1169 * buf: C string containing an unsigned
1170 * integer value representing the new
1171 * NFS blksize
1172 * size: non-zero length of C string in @buf
1173 * Output:
1174 * On success: passed-in buffer filled with '\n'-terminated C string
1175 * containing numeric value of the current NFS blksize
1176 * setting;
1177 * return code is the size in bytes of the string
1178 * On error: return code is zero or a negative errno value
1179 */
1180 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
1181 {
1182 char *mesg = buf;
1183 if (size > 0) {
1184 int bsize;
1185 int rv = get_int(&mesg, &bsize);
1186 if (rv)
1187 return rv;
1188 /* force bsize into allowed range and
1189 * required alignment.
1190 */
1191 if (bsize < 1024)
1192 bsize = 1024;
1193 if (bsize > NFSSVC_MAXBLKSIZE)
1194 bsize = NFSSVC_MAXBLKSIZE;
1195 bsize &= ~(1024-1);
1196 mutex_lock(&nfsd_mutex);
1197 if (nfsd_serv && nfsd_serv->sv_nrthreads) {
1198 mutex_unlock(&nfsd_mutex);
1199 return -EBUSY;
1200 }
1201 nfsd_max_blksize = bsize;
1202 mutex_unlock(&nfsd_mutex);
1203 }
1204
1205 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
1206 nfsd_max_blksize);
1207 }
1208
1209 #ifdef CONFIG_NFSD_V4
1210 static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
1211 {
1212 char *mesg = buf;
1213 int rv, i;
1214
1215 if (size > 0) {
1216 if (nfsd_serv)
1217 return -EBUSY;
1218 rv = get_int(&mesg, &i);
1219 if (rv)
1220 return rv;
1221 /*
1222 * Some sanity checking. We don't have a reason for
1223 * these particular numbers, but problems with the
1224 * extremes are:
1225 * - Too short: the briefest network outage may
1226 * cause clients to lose all their locks. Also,
1227 * the frequent polling may be wasteful.
1228 * - Too long: do you really want reboot recovery
1229 * to take more than an hour? Or to make other
1230 * clients wait an hour before being able to
1231 * revoke a dead client's locks?
1232 */
1233 if (i < 10 || i > 3600)
1234 return -EINVAL;
1235 *time = i;
1236 }
1237
1238 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
1239 }
1240
1241 static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
1242 {
1243 ssize_t rv;
1244
1245 mutex_lock(&nfsd_mutex);
1246 rv = __nfsd4_write_time(file, buf, size, time);
1247 mutex_unlock(&nfsd_mutex);
1248 return rv;
1249 }
1250
1251 /**
1252 * write_leasetime - Set or report the current NFSv4 lease time
1253 *
1254 * Input:
1255 * buf: ignored
1256 * size: zero
1257 *
1258 * OR
1259 *
1260 * Input:
1261 * buf: C string containing an unsigned
1262 * integer value representing the new
1263 * NFSv4 lease expiry time
1264 * size: non-zero length of C string in @buf
1265 * Output:
1266 * On success: passed-in buffer filled with '\n'-terminated C
1267 * string containing unsigned integer value of the
1268 * current lease expiry time;
1269 * return code is the size in bytes of the string
1270 * On error: return code is zero or a negative errno value
1271 */
1272 static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
1273 {
1274 return nfsd4_write_time(file, buf, size, &nfsd4_lease);
1275 }
1276
1277 /**
1278 * write_gracetime - Set or report current NFSv4 grace period time
1279 *
1280 * As above, but sets the time of the NFSv4 grace period.
1281 *
1282 * Note this should never be set to less than the *previous*
1283 * lease-period time, but we don't try to enforce this. (In the common
1284 * case (a new boot), we don't know what the previous lease time was
1285 * anyway.)
1286 */
1287 static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
1288 {
1289 return nfsd4_write_time(file, buf, size, &nfsd4_grace);
1290 }
1291
1292 extern char *nfs4_recoverydir(void);
1293
1294 static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
1295 {
1296 char *mesg = buf;
1297 char *recdir;
1298 int len, status;
1299
1300 if (size > 0) {
1301 if (nfsd_serv)
1302 return -EBUSY;
1303 if (size > PATH_MAX || buf[size-1] != '\n')
1304 return -EINVAL;
1305 buf[size-1] = 0;
1306
1307 recdir = mesg;
1308 len = qword_get(&mesg, recdir, size);
1309 if (len <= 0)
1310 return -EINVAL;
1311
1312 status = nfs4_reset_recoverydir(recdir);
1313 }
1314
1315 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1316 nfs4_recoverydir());
1317 }
1318
1319 /**
1320 * write_recoverydir - Set or report the pathname of the recovery directory
1321 *
1322 * Input:
1323 * buf: ignored
1324 * size: zero
1325 *
1326 * OR
1327 *
1328 * Input:
1329 * buf: C string containing the pathname
1330 * of the directory on a local file
1331 * system containing permanent NFSv4
1332 * recovery data
1333 * size: non-zero length of C string in @buf
1334 * Output:
1335 * On success: passed-in buffer filled with '\n'-terminated C string
1336 * containing the current recovery pathname setting;
1337 * return code is the size in bytes of the string
1338 * On error: return code is zero or a negative errno value
1339 */
1340 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
1341 {
1342 ssize_t rv;
1343
1344 mutex_lock(&nfsd_mutex);
1345 rv = __write_recoverydir(file, buf, size);
1346 mutex_unlock(&nfsd_mutex);
1347 return rv;
1348 }
1349
1350 #endif
1351
1352 /*----------------------------------------------------------------------------*/
1353 /*
1354 * populating the filesystem.
1355 */
1356
1357 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1358 {
1359 static struct tree_descr nfsd_files[] = {
1360 [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
1361 [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
1362 [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
1363 [NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
1364 [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
1365 [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
1366 [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
1367 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
1368 [NFSD_Export_features] = {"export_features",
1369 &export_features_operations, S_IRUGO},
1370 [NFSD_FO_UnlockIP] = {"unlock_ip",
1371 &transaction_ops, S_IWUSR|S_IRUSR},
1372 [NFSD_FO_UnlockFS] = {"unlock_filesystem",
1373 &transaction_ops, S_IWUSR|S_IRUSR},
1374 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1375 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
1376 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
1377 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
1378 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
1379 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
1380 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
1381 #ifdef CONFIG_NFSD_V4
1382 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
1383 [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
1384 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
1385 #endif
1386 /* last one */ {""}
1387 };
1388 return simple_fill_super(sb, 0x6e667364, nfsd_files);
1389 }
1390
1391 static int nfsd_get_sb(struct file_system_type *fs_type,
1392 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1393 {
1394 return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt);
1395 }
1396
1397 static struct file_system_type nfsd_fs_type = {
1398 .owner = THIS_MODULE,
1399 .name = "nfsd",
1400 .get_sb = nfsd_get_sb,
1401 .kill_sb = kill_litter_super,
1402 };
1403
1404 #ifdef CONFIG_PROC_FS
1405 static int create_proc_exports_entry(void)
1406 {
1407 struct proc_dir_entry *entry;
1408
1409 entry = proc_mkdir("fs/nfs", NULL);
1410 if (!entry)
1411 return -ENOMEM;
1412 entry = proc_create("exports", 0, entry, &exports_operations);
1413 if (!entry)
1414 return -ENOMEM;
1415 return 0;
1416 }
1417 #else /* CONFIG_PROC_FS */
1418 static int create_proc_exports_entry(void)
1419 {
1420 return 0;
1421 }
1422 #endif
1423
1424 static int __init init_nfsd(void)
1425 {
1426 int retval;
1427 printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1428
1429 retval = nfs4_state_init(); /* nfs4 locking state */
1430 if (retval)
1431 return retval;
1432 nfsd_stat_init(); /* Statistics */
1433 retval = nfsd_reply_cache_init();
1434 if (retval)
1435 goto out_free_stat;
1436 retval = nfsd_export_init();
1437 if (retval)
1438 goto out_free_cache;
1439 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1440 retval = nfsd_idmap_init();
1441 if (retval)
1442 goto out_free_lockd;
1443 retval = create_proc_exports_entry();
1444 if (retval)
1445 goto out_free_idmap;
1446 retval = register_filesystem(&nfsd_fs_type);
1447 if (retval)
1448 goto out_free_all;
1449 return 0;
1450 out_free_all:
1451 remove_proc_entry("fs/nfs/exports", NULL);
1452 remove_proc_entry("fs/nfs", NULL);
1453 out_free_idmap:
1454 nfsd_idmap_shutdown();
1455 out_free_lockd:
1456 nfsd_lockd_shutdown();
1457 nfsd_export_shutdown();
1458 out_free_cache:
1459 nfsd_reply_cache_shutdown();
1460 out_free_stat:
1461 nfsd_stat_shutdown();
1462 nfsd4_free_slabs();
1463 return retval;
1464 }
1465
1466 static void __exit exit_nfsd(void)
1467 {
1468 nfsd_export_shutdown();
1469 nfsd_reply_cache_shutdown();
1470 remove_proc_entry("fs/nfs/exports", NULL);
1471 remove_proc_entry("fs/nfs", NULL);
1472 nfsd_stat_shutdown();
1473 nfsd_lockd_shutdown();
1474 nfsd_idmap_shutdown();
1475 nfsd4_free_slabs();
1476 unregister_filesystem(&nfsd_fs_type);
1477 }
1478
1479 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1480 MODULE_LICENSE("GPL");
1481 module_init(init_nfsd)
1482 module_exit(exit_nfsd)
kernel source for telekom puls (alcatel/mediatek)