ext4: Fix sparse warnings.
[linux-2.6] / fs / nfsd / nfsctl.c
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
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>
25 #include <linux/string.h>
26 #include <linux/smp_lock.h>
27 #include <linux/ctype.h>
28
29 #include <linux/nfs.h>
30 #include <linux/nfsd_idmap.h>
31 #include <linux/lockd/bind.h>
32 #include <linux/sunrpc/svc.h>
33 #include <linux/sunrpc/svcsock.h>
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
39 #include <asm/uaccess.h>
40
41 /*
42  *      We have a single directory with 9 nodes in it.
43  */
44 enum {
45         NFSD_Root = 1,
46         NFSD_Svc,
47         NFSD_Add,
48         NFSD_Del,
49         NFSD_Export,
50         NFSD_Unexport,
51         NFSD_Getfd,
52         NFSD_Getfs,
53         NFSD_List,
54         NFSD_Fh,
55         NFSD_Threads,
56         NFSD_Pool_Threads,
57         NFSD_Versions,
58         NFSD_Ports,
59         NFSD_MaxBlkSize,
60         /*
61          * The below MUST come last.  Otherwise we leave a hole in nfsd_files[]
62          * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
63          */
64 #ifdef CONFIG_NFSD_V4
65         NFSD_Leasetime,
66         NFSD_RecoveryDir,
67 #endif
68 };
69
70 /*
71  * write() for these nodes.
72  */
73 static ssize_t write_svc(struct file *file, char *buf, size_t size);
74 static ssize_t write_add(struct file *file, char *buf, size_t size);
75 static ssize_t write_del(struct file *file, char *buf, size_t size);
76 static ssize_t write_export(struct file *file, char *buf, size_t size);
77 static ssize_t write_unexport(struct file *file, char *buf, size_t size);
78 static ssize_t write_getfd(struct file *file, char *buf, size_t size);
79 static ssize_t write_getfs(struct file *file, char *buf, size_t size);
80 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
81 static ssize_t write_threads(struct file *file, char *buf, size_t size);
82 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
83 static ssize_t write_versions(struct file *file, char *buf, size_t size);
84 static ssize_t write_ports(struct file *file, char *buf, size_t size);
85 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
86 #ifdef CONFIG_NFSD_V4
87 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
88 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
89 #endif
90
91 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
92         [NFSD_Svc] = write_svc,
93         [NFSD_Add] = write_add,
94         [NFSD_Del] = write_del,
95         [NFSD_Export] = write_export,
96         [NFSD_Unexport] = write_unexport,
97         [NFSD_Getfd] = write_getfd,
98         [NFSD_Getfs] = write_getfs,
99         [NFSD_Fh] = write_filehandle,
100         [NFSD_Threads] = write_threads,
101         [NFSD_Pool_Threads] = write_pool_threads,
102         [NFSD_Versions] = write_versions,
103         [NFSD_Ports] = write_ports,
104         [NFSD_MaxBlkSize] = write_maxblksize,
105 #ifdef CONFIG_NFSD_V4
106         [NFSD_Leasetime] = write_leasetime,
107         [NFSD_RecoveryDir] = write_recoverydir,
108 #endif
109 };
110
111 static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
112 {
113         ino_t ino =  file->f_path.dentry->d_inode->i_ino;
114         char *data;
115         ssize_t rv;
116
117         if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
118                 return -EINVAL;
119
120         data = simple_transaction_get(file, buf, size);
121         if (IS_ERR(data))
122                 return PTR_ERR(data);
123
124         rv =  write_op[ino](file, data, size);
125         if (rv >= 0) {
126                 simple_transaction_set(file, rv);
127                 rv = size;
128         }
129         return rv;
130 }
131
132 static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
133 {
134         if (! file->private_data) {
135                 /* An attempt to read a transaction file without writing
136                  * causes a 0-byte write so that the file can return
137                  * state information
138                  */
139                 ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos);
140                 if (rv < 0)
141                         return rv;
142         }
143         return simple_transaction_read(file, buf, size, pos);
144 }
145
146 static const struct file_operations transaction_ops = {
147         .write          = nfsctl_transaction_write,
148         .read           = nfsctl_transaction_read,
149         .release        = simple_transaction_release,
150 };
151
152 extern struct seq_operations nfs_exports_op;
153 static int exports_open(struct inode *inode, struct file *file)
154 {
155         return seq_open(file, &nfs_exports_op);
156 }
157
158 static const struct file_operations exports_operations = {
159         .open           = exports_open,
160         .read           = seq_read,
161         .llseek         = seq_lseek,
162         .release        = seq_release,
163 };
164
165 /*----------------------------------------------------------------------------*/
166 /*
167  * payload - write methods
168  * If the method has a response, the response should be put in buf,
169  * and the length returned.  Otherwise return 0 or and -error.
170  */
171
172 static ssize_t write_svc(struct file *file, char *buf, size_t size)
173 {
174         struct nfsctl_svc *data;
175         if (size < sizeof(*data))
176                 return -EINVAL;
177         data = (struct nfsctl_svc*) buf;
178         return nfsd_svc(data->svc_port, data->svc_nthreads);
179 }
180
181 static ssize_t write_add(struct file *file, char *buf, size_t size)
182 {
183         struct nfsctl_client *data;
184         if (size < sizeof(*data))
185                 return -EINVAL;
186         data = (struct nfsctl_client *)buf;
187         return exp_addclient(data);
188 }
189
190 static ssize_t write_del(struct file *file, char *buf, size_t size)
191 {
192         struct nfsctl_client *data;
193         if (size < sizeof(*data))
194                 return -EINVAL;
195         data = (struct nfsctl_client *)buf;
196         return exp_delclient(data);
197 }
198
199 static ssize_t write_export(struct file *file, char *buf, size_t size)
200 {
201         struct nfsctl_export *data;
202         if (size < sizeof(*data))
203                 return -EINVAL;
204         data = (struct nfsctl_export*)buf;
205         return exp_export(data);
206 }
207
208 static ssize_t write_unexport(struct file *file, char *buf, size_t size)
209 {
210         struct nfsctl_export *data;
211
212         if (size < sizeof(*data))
213                 return -EINVAL;
214         data = (struct nfsctl_export*)buf;
215         return exp_unexport(data);
216 }
217
218 static ssize_t write_getfs(struct file *file, char *buf, size_t size)
219 {
220         struct nfsctl_fsparm *data;
221         struct sockaddr_in *sin;
222         struct auth_domain *clp;
223         int err = 0;
224         struct knfsd_fh *res;
225
226         if (size < sizeof(*data))
227                 return -EINVAL;
228         data = (struct nfsctl_fsparm*)buf;
229         err = -EPROTONOSUPPORT;
230         if (data->gd_addr.sa_family != AF_INET)
231                 goto out;
232         sin = (struct sockaddr_in *)&data->gd_addr;
233         if (data->gd_maxlen > NFS3_FHSIZE)
234                 data->gd_maxlen = NFS3_FHSIZE;
235
236         res = (struct knfsd_fh*)buf;
237
238         exp_readlock();
239         if (!(clp = auth_unix_lookup(sin->sin_addr)))
240                 err = -EPERM;
241         else {
242                 err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
243                 auth_domain_put(clp);
244         }
245         exp_readunlock();
246         if (err == 0)
247                 err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
248  out:
249         return err;
250 }
251
252 static ssize_t write_getfd(struct file *file, char *buf, size_t size)
253 {
254         struct nfsctl_fdparm *data;
255         struct sockaddr_in *sin;
256         struct auth_domain *clp;
257         int err = 0;
258         struct knfsd_fh fh;
259         char *res;
260
261         if (size < sizeof(*data))
262                 return -EINVAL;
263         data = (struct nfsctl_fdparm*)buf;
264         err = -EPROTONOSUPPORT;
265         if (data->gd_addr.sa_family != AF_INET)
266                 goto out;
267         err = -EINVAL;
268         if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
269                 goto out;
270
271         res = buf;
272         sin = (struct sockaddr_in *)&data->gd_addr;
273         exp_readlock();
274         if (!(clp = auth_unix_lookup(sin->sin_addr)))
275                 err = -EPERM;
276         else {
277                 err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
278                 auth_domain_put(clp);
279         }
280         exp_readunlock();
281
282         if (err == 0) {
283                 memset(res,0, NFS_FHSIZE);
284                 memcpy(res, &fh.fh_base, fh.fh_size);
285                 err = NFS_FHSIZE;
286         }
287  out:
288         return err;
289 }
290
291 static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
292 {
293         /* request is:
294          *   domain path maxsize
295          * response is
296          *   filehandle
297          *
298          * qword quoting is used, so filehandle will be \x....
299          */
300         char *dname, *path;
301         int uninitialized_var(maxsize);
302         char *mesg = buf;
303         int len;
304         struct auth_domain *dom;
305         struct knfsd_fh fh;
306
307         if (buf[size-1] != '\n')
308                 return -EINVAL;
309         buf[size-1] = 0;
310
311         dname = mesg;
312         len = qword_get(&mesg, dname, size);
313         if (len <= 0) return -EINVAL;
314         
315         path = dname+len+1;
316         len = qword_get(&mesg, path, size);
317         if (len <= 0) return -EINVAL;
318
319         len = get_int(&mesg, &maxsize);
320         if (len)
321                 return len;
322
323         if (maxsize < NFS_FHSIZE)
324                 return -EINVAL;
325         if (maxsize > NFS3_FHSIZE)
326                 maxsize = NFS3_FHSIZE;
327
328         if (qword_get(&mesg, mesg, size)>0)
329                 return -EINVAL;
330
331         /* we have all the words, they are in buf.. */
332         dom = unix_domain_find(dname);
333         if (!dom)
334                 return -ENOMEM;
335
336         len = exp_rootfh(dom, path, &fh,  maxsize);
337         auth_domain_put(dom);
338         if (len)
339                 return len;
340         
341         mesg = buf; len = SIMPLE_TRANSACTION_LIMIT;
342         qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
343         mesg[-1] = '\n';
344         return mesg - buf;      
345 }
346
347 extern int nfsd_nrthreads(void);
348
349 static ssize_t write_threads(struct file *file, char *buf, size_t size)
350 {
351         /* if size > 0, look for a number of threads and call nfsd_svc
352          * then write out number of threads as reply
353          */
354         char *mesg = buf;
355         int rv;
356         if (size > 0) {
357                 int newthreads;
358                 rv = get_int(&mesg, &newthreads);
359                 if (rv)
360                         return rv;
361                 if (newthreads <0)
362                         return -EINVAL;
363                 rv = nfsd_svc(2049, newthreads);
364                 if (rv)
365                         return rv;
366         }
367         sprintf(buf, "%d\n", nfsd_nrthreads());
368         return strlen(buf);
369 }
370
371 extern int nfsd_nrpools(void);
372 extern int nfsd_get_nrthreads(int n, int *);
373 extern int nfsd_set_nrthreads(int n, int *);
374
375 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
376 {
377         /* if size > 0, look for an array of number of threads per node
378          * and apply them  then write out number of threads per node as reply
379          */
380         char *mesg = buf;
381         int i;
382         int rv;
383         int len;
384         int npools = nfsd_nrpools();
385         int *nthreads;
386
387         if (npools == 0) {
388                 /*
389                  * NFS is shut down.  The admin can start it by
390                  * writing to the threads file but NOT the pool_threads
391                  * file, sorry.  Report zero threads.
392                  */
393                 strcpy(buf, "0\n");
394                 return strlen(buf);
395         }
396
397         nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
398         if (nthreads == NULL)
399                 return -ENOMEM;
400
401         if (size > 0) {
402                 for (i = 0; i < npools; i++) {
403                         rv = get_int(&mesg, &nthreads[i]);
404                         if (rv == -ENOENT)
405                                 break;          /* fewer numbers than pools */
406                         if (rv)
407                                 goto out_free;  /* syntax error */
408                         rv = -EINVAL;
409                         if (nthreads[i] < 0)
410                                 goto out_free;
411                 }
412                 rv = nfsd_set_nrthreads(i, nthreads);
413                 if (rv)
414                         goto out_free;
415         }
416
417         rv = nfsd_get_nrthreads(npools, nthreads);
418         if (rv)
419                 goto out_free;
420
421         mesg = buf;
422         size = SIMPLE_TRANSACTION_LIMIT;
423         for (i = 0; i < npools && size > 0; i++) {
424                 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
425                 len = strlen(mesg);
426                 size -= len;
427                 mesg += len;
428         }
429
430         return (mesg-buf);
431
432 out_free:
433         kfree(nthreads);
434         return rv;
435 }
436
437 static ssize_t write_versions(struct file *file, char *buf, size_t size)
438 {
439         /*
440          * Format:
441          *   [-/+]vers [-/+]vers ...
442          */
443         char *mesg = buf;
444         char *vers, sign;
445         int len, num;
446         ssize_t tlen = 0;
447         char *sep;
448
449         if (size>0) {
450                 if (nfsd_serv)
451                         /* Cannot change versions without updating
452                          * nfsd_serv->sv_xdrsize, and reallocing
453                          * rq_argp and rq_resp
454                          */
455                         return -EBUSY;
456                 if (buf[size-1] != '\n')
457                         return -EINVAL;
458                 buf[size-1] = 0;
459
460                 vers = mesg;
461                 len = qword_get(&mesg, vers, size);
462                 if (len <= 0) return -EINVAL;
463                 do {
464                         sign = *vers;
465                         if (sign == '+' || sign == '-')
466                                 num = simple_strtol((vers+1), NULL, 0);
467                         else
468                                 num = simple_strtol(vers, NULL, 0);
469                         switch(num) {
470                         case 2:
471                         case 3:
472                         case 4:
473                                 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
474                                 break;
475                         default:
476                                 return -EINVAL;
477                         }
478                         vers += len + 1;
479                         tlen += len;
480                 } while ((len = qword_get(&mesg, vers, size)) > 0);
481                 /* If all get turned off, turn them back on, as
482                  * having no versions is BAD
483                  */
484                 nfsd_reset_versions();
485         }
486         /* Now write current state into reply buffer */
487         len = 0;
488         sep = "";
489         for (num=2 ; num <= 4 ; num++)
490                 if (nfsd_vers(num, NFSD_AVAIL)) {
491                         len += sprintf(buf+len, "%s%c%d", sep,
492                                        nfsd_vers(num, NFSD_TEST)?'+':'-',
493                                        num);
494                         sep = " ";
495                 }
496         len += sprintf(buf+len, "\n");
497         return len;
498 }
499
500 static ssize_t write_ports(struct file *file, char *buf, size_t size)
501 {
502         if (size == 0) {
503                 int len = 0;
504                 lock_kernel();
505                 if (nfsd_serv)
506                         len = svc_sock_names(buf, nfsd_serv, NULL);
507                 unlock_kernel();
508                 return len;
509         }
510         /* Either a single 'fd' number is written, in which
511          * case it must be for a socket of a supported family/protocol,
512          * and we use it as an nfsd socket, or
513          * A '-' followed by the 'name' of a socket in which case
514          * we close the socket.
515          */
516         if (isdigit(buf[0])) {
517                 char *mesg = buf;
518                 int fd;
519                 int err;
520                 err = get_int(&mesg, &fd);
521                 if (err)
522                         return -EINVAL;
523                 if (fd < 0)
524                         return -EINVAL;
525                 err = nfsd_create_serv();
526                 if (!err) {
527                         int proto = 0;
528                         err = svc_addsock(nfsd_serv, fd, buf, &proto);
529                         if (err >= 0) {
530                                 err = lockd_up(proto);
531                                 if (err < 0)
532                                         svc_sock_names(buf+strlen(buf)+1, nfsd_serv, buf);
533                         }
534                         /* Decrease the count, but don't shutdown the
535                          * the service
536                          */
537                         lock_kernel();
538                         nfsd_serv->sv_nrthreads--;
539                         unlock_kernel();
540                 }
541                 return err < 0 ? err : 0;
542         }
543         if (buf[0] == '-') {
544                 char *toclose = kstrdup(buf+1, GFP_KERNEL);
545                 int len = 0;
546                 if (!toclose)
547                         return -ENOMEM;
548                 lock_kernel();
549                 if (nfsd_serv)
550                         len = svc_sock_names(buf, nfsd_serv, toclose);
551                 unlock_kernel();
552                 if (len >= 0)
553                         lockd_down();
554                 kfree(toclose);
555                 return len;
556         }
557         return -EINVAL;
558 }
559
560 int nfsd_max_blksize;
561
562 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
563 {
564         char *mesg = buf;
565         if (size > 0) {
566                 int bsize;
567                 int rv = get_int(&mesg, &bsize);
568                 if (rv)
569                         return rv;
570                 /* force bsize into allowed range and
571                  * required alignment.
572                  */
573                 if (bsize < 1024)
574                         bsize = 1024;
575                 if (bsize > NFSSVC_MAXBLKSIZE)
576                         bsize = NFSSVC_MAXBLKSIZE;
577                 bsize &= ~(1024-1);
578                 lock_kernel();
579                 if (nfsd_serv && nfsd_serv->sv_nrthreads) {
580                         unlock_kernel();
581                         return -EBUSY;
582                 }
583                 nfsd_max_blksize = bsize;
584                 unlock_kernel();
585         }
586         return sprintf(buf, "%d\n", nfsd_max_blksize);
587 }
588
589 #ifdef CONFIG_NFSD_V4
590 extern time_t nfs4_leasetime(void);
591
592 static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
593 {
594         /* if size > 10 seconds, call
595          * nfs4_reset_lease() then write out the new lease (seconds) as reply
596          */
597         char *mesg = buf;
598         int rv;
599
600         if (size > 0) {
601                 int lease;
602                 rv = get_int(&mesg, &lease);
603                 if (rv)
604                         return rv;
605                 if (lease < 10 || lease > 3600)
606                         return -EINVAL;
607                 nfs4_reset_lease(lease);
608         }
609         sprintf(buf, "%ld\n", nfs4_lease_time());
610         return strlen(buf);
611 }
612
613 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
614 {
615         char *mesg = buf;
616         char *recdir;
617         int len, status;
618
619         if (size > PATH_MAX || buf[size-1] != '\n')
620                 return -EINVAL;
621         buf[size-1] = 0;
622
623         recdir = mesg;
624         len = qword_get(&mesg, recdir, size);
625         if (len <= 0)
626                 return -EINVAL;
627
628         status = nfs4_reset_recoverydir(recdir);
629         return strlen(buf);
630 }
631 #endif
632
633 /*----------------------------------------------------------------------------*/
634 /*
635  *      populating the filesystem.
636  */
637
638 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
639 {
640         static struct tree_descr nfsd_files[] = {
641                 [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
642                 [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
643                 [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
644                 [NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
645                 [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
646                 [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
647                 [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
648                 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
649                 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
650                 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
651                 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
652                 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
653                 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
654                 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
655 #ifdef CONFIG_NFSD_V4
656                 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
657                 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
658 #endif
659                 /* last one */ {""}
660         };
661         return simple_fill_super(sb, 0x6e667364, nfsd_files);
662 }
663
664 static int nfsd_get_sb(struct file_system_type *fs_type,
665         int flags, const char *dev_name, void *data, struct vfsmount *mnt)
666 {
667         return get_sb_single(fs_type, flags, data, nfsd_fill_super, mnt);
668 }
669
670 static struct file_system_type nfsd_fs_type = {
671         .owner          = THIS_MODULE,
672         .name           = "nfsd",
673         .get_sb         = nfsd_get_sb,
674         .kill_sb        = kill_litter_super,
675 };
676
677 static int __init init_nfsd(void)
678 {
679         int retval;
680         printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
681
682         retval = nfs4_state_init(); /* nfs4 locking state */
683         if (retval)
684                 return retval;
685         nfsd_stat_init();       /* Statistics */
686         nfsd_cache_init();      /* RPC reply cache */
687         nfsd_export_init();     /* Exports table */
688         nfsd_lockd_init();      /* lockd->nfsd callbacks */
689         nfsd_idmap_init();      /* Name to ID mapping */
690         if (proc_mkdir("fs/nfs", NULL)) {
691                 struct proc_dir_entry *entry;
692                 entry = create_proc_entry("fs/nfs/exports", 0, NULL);
693                 if (entry)
694                         entry->proc_fops =  &exports_operations;
695         }
696         retval = register_filesystem(&nfsd_fs_type);
697         if (retval) {
698                 nfsd_export_shutdown();
699                 nfsd_cache_shutdown();
700                 remove_proc_entry("fs/nfs/exports", NULL);
701                 remove_proc_entry("fs/nfs", NULL);
702                 nfsd_stat_shutdown();
703                 nfsd_lockd_shutdown();
704         }
705         return retval;
706 }
707
708 static void __exit exit_nfsd(void)
709 {
710         nfsd_export_shutdown();
711         nfsd_cache_shutdown();
712         remove_proc_entry("fs/nfs/exports", NULL);
713         remove_proc_entry("fs/nfs", NULL);
714         nfsd_stat_shutdown();
715         nfsd_lockd_shutdown();
716         nfsd_idmap_shutdown();
717         nfsd4_free_slabs();
718         unregister_filesystem(&nfsd_fs_type);
719 }
720
721 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
722 MODULE_LICENSE("GPL");
723 module_init(init_nfsd)
724 module_exit(exit_nfsd)