2 * Syscall interface to knfsd.
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 #include <linux/slab.h>
8 #include <linux/namei.h>
9 #include <linux/ctype.h>
11 #include <linux/sunrpc/svcsock.h>
12 #include <linux/lockd/lockd.h>
13 #include <linux/sunrpc/addr.h>
14 #include <linux/sunrpc/gss_api.h>
15 #include <linux/sunrpc/gss_krb5_enctypes.h>
16 #include <linux/sunrpc/rpc_pipe_fs.h>
17 #include <linux/module.h>
26 * We have a single directory with several nodes in it.
41 NFSD_SupportedEnctypes
,
43 * The below MUST come last. Otherwise we leave a hole in nfsd_files[]
44 * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
54 * write() for these nodes.
56 static ssize_t
write_filehandle(struct file
*file
, char *buf
, size_t size
);
57 static ssize_t
write_unlock_ip(struct file
*file
, char *buf
, size_t size
);
58 static ssize_t
write_unlock_fs(struct file
*file
, char *buf
, size_t size
);
59 static ssize_t
write_threads(struct file
*file
, char *buf
, size_t size
);
60 static ssize_t
write_pool_threads(struct file
*file
, char *buf
, size_t size
);
61 static ssize_t
write_versions(struct file
*file
, char *buf
, size_t size
);
62 static ssize_t
write_ports(struct file
*file
, char *buf
, size_t size
);
63 static ssize_t
write_maxblksize(struct file
*file
, char *buf
, size_t size
);
65 static ssize_t
write_leasetime(struct file
*file
, char *buf
, size_t size
);
66 static ssize_t
write_gracetime(struct file
*file
, char *buf
, size_t size
);
67 static ssize_t
write_recoverydir(struct file
*file
, char *buf
, size_t size
);
70 static ssize_t (*write_op
[])(struct file
*, char *, size_t) = {
71 [NFSD_Fh
] = write_filehandle
,
72 [NFSD_FO_UnlockIP
] = write_unlock_ip
,
73 [NFSD_FO_UnlockFS
] = write_unlock_fs
,
74 [NFSD_Threads
] = write_threads
,
75 [NFSD_Pool_Threads
] = write_pool_threads
,
76 [NFSD_Versions
] = write_versions
,
77 [NFSD_Ports
] = write_ports
,
78 [NFSD_MaxBlkSize
] = write_maxblksize
,
80 [NFSD_Leasetime
] = write_leasetime
,
81 [NFSD_Gracetime
] = write_gracetime
,
82 [NFSD_RecoveryDir
] = write_recoverydir
,
86 static ssize_t
nfsctl_transaction_write(struct file
*file
, const char __user
*buf
, size_t size
, loff_t
*pos
)
88 ino_t ino
= file
->f_path
.dentry
->d_inode
->i_ino
;
92 if (ino
>= ARRAY_SIZE(write_op
) || !write_op
[ino
])
95 data
= simple_transaction_get(file
, buf
, size
);
99 rv
= write_op
[ino
](file
, data
, size
);
101 simple_transaction_set(file
, rv
);
107 static ssize_t
nfsctl_transaction_read(struct file
*file
, char __user
*buf
, size_t size
, loff_t
*pos
)
109 if (! file
->private_data
) {
110 /* An attempt to read a transaction file without writing
111 * causes a 0-byte write so that the file can return
114 ssize_t rv
= nfsctl_transaction_write(file
, buf
, 0, pos
);
118 return simple_transaction_read(file
, buf
, size
, pos
);
121 static const struct file_operations transaction_ops
= {
122 .write
= nfsctl_transaction_write
,
123 .read
= nfsctl_transaction_read
,
124 .release
= simple_transaction_release
,
125 .llseek
= default_llseek
,
128 static int exports_open(struct inode
*inode
, struct file
*file
)
131 struct seq_file
*seq
;
132 struct nfsd_net
*nn
= net_generic(&init_net
, nfsd_net_id
);
134 err
= seq_open(file
, &nfs_exports_op
);
138 seq
= file
->private_data
;
139 seq
->private = nn
->svc_export_cache
;
143 static const struct file_operations exports_operations
= {
144 .open
= exports_open
,
147 .release
= seq_release
,
148 .owner
= THIS_MODULE
,
151 static int export_features_show(struct seq_file
*m
, void *v
)
153 seq_printf(m
, "0x%x 0x%x\n", NFSEXP_ALLFLAGS
, NFSEXP_SECINFO_FLAGS
);
157 static int export_features_open(struct inode
*inode
, struct file
*file
)
159 return single_open(file
, export_features_show
, NULL
);
162 static struct file_operations export_features_operations
= {
163 .open
= export_features_open
,
166 .release
= single_release
,
169 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
170 static int supported_enctypes_show(struct seq_file
*m
, void *v
)
172 seq_printf(m
, KRB5_SUPPORTED_ENCTYPES
);
176 static int supported_enctypes_open(struct inode
*inode
, struct file
*file
)
178 return single_open(file
, supported_enctypes_show
, NULL
);
181 static struct file_operations supported_enctypes_ops
= {
182 .open
= supported_enctypes_open
,
185 .release
= single_release
,
187 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
189 static const struct file_operations pool_stats_operations
= {
190 .open
= nfsd_pool_stats_open
,
193 .release
= nfsd_pool_stats_release
,
194 .owner
= THIS_MODULE
,
197 /*----------------------------------------------------------------------------*/
199 * payload - write methods
204 * write_unlock_ip - Release all locks used by a client
209 * buf: '\n'-terminated C string containing a
210 * presentation format IP address
211 * size: length of C string in @buf
213 * On success: returns zero if all specified locks were released;
214 * returns one if one or more locks were not released
215 * On error: return code is negative errno value
217 static ssize_t
write_unlock_ip(struct file
*file
, char *buf
, size_t size
)
219 struct sockaddr_storage address
;
220 struct sockaddr
*sap
= (struct sockaddr
*)&address
;
221 size_t salen
= sizeof(address
);
228 if (buf
[size
-1] != '\n')
232 if (qword_get(&buf
, fo_path
, size
) < 0)
235 if (rpc_pton(&init_net
, fo_path
, size
, sap
, salen
) == 0)
238 return nlmsvc_unlock_all_by_ip(sap
);
242 * write_unlock_fs - Release all locks on a local file system
247 * buf: '\n'-terminated C string containing the
248 * absolute pathname of a local file system
249 * size: length of C string in @buf
251 * On success: returns zero if all specified locks were released;
252 * returns one if one or more locks were not released
253 * On error: return code is negative errno value
255 static ssize_t
write_unlock_fs(struct file
*file
, char *buf
, size_t size
)
265 if (buf
[size
-1] != '\n')
269 if (qword_get(&buf
, fo_path
, size
) < 0)
272 error
= kern_path(fo_path
, 0, &path
);
277 * XXX: Needs better sanity checking. Otherwise we could end up
278 * releasing locks on the wrong file system.
281 * 1. Does the path refer to a directory?
282 * 2. Is that directory a mount point, or
283 * 3. Is that directory the root of an exported file system?
285 error
= nlmsvc_unlock_all_by_sb(path
.dentry
->d_sb
);
292 * write_filehandle - Get a variable-length NFS file handle by path
294 * On input, the buffer contains a '\n'-terminated C string comprised of
295 * three alphanumeric words separated by whitespace. The string may
296 * contain escape sequences.
300 * domain: client domain name
301 * path: export pathname
302 * maxsize: numeric maximum size of
304 * size: length of C string in @buf
306 * On success: passed-in buffer filled with '\n'-terminated C
307 * string containing a ASCII hex text version
308 * of the NFS file handle;
309 * return code is the size in bytes of the string
310 * On error: return code is negative errno value
312 static ssize_t
write_filehandle(struct file
*file
, char *buf
, size_t size
)
315 int uninitialized_var(maxsize
);
318 struct auth_domain
*dom
;
324 if (buf
[size
-1] != '\n')
329 len
= qword_get(&mesg
, dname
, size
);
334 len
= qword_get(&mesg
, path
, size
);
338 len
= get_int(&mesg
, &maxsize
);
342 if (maxsize
< NFS_FHSIZE
)
344 if (maxsize
> NFS3_FHSIZE
)
345 maxsize
= NFS3_FHSIZE
;
347 if (qword_get(&mesg
, mesg
, size
)>0)
350 /* we have all the words, they are in buf.. */
351 dom
= unix_domain_find(dname
);
355 len
= exp_rootfh(&init_net
, dom
, path
, &fh
, maxsize
);
356 auth_domain_put(dom
);
361 len
= SIMPLE_TRANSACTION_LIMIT
;
362 qword_addhex(&mesg
, &len
, (char*)&fh
.fh_base
, fh
.fh_size
);
368 * write_threads - Start NFSD, or report the current number of running threads
374 * On success: passed-in buffer filled with '\n'-terminated C
375 * string numeric value representing the number of
376 * running NFSD threads;
377 * return code is the size in bytes of the string
378 * On error: return code is zero
383 * buf: C string containing an unsigned
384 * integer value representing the
385 * number of NFSD threads to start
386 * size: non-zero length of C string in @buf
388 * On success: NFS service is started;
389 * passed-in buffer filled with '\n'-terminated C
390 * string numeric value representing the number of
391 * running NFSD threads;
392 * return code is the size in bytes of the string
393 * On error: return code is zero or a negative errno value
395 static ssize_t
write_threads(struct file
*file
, char *buf
, size_t size
)
399 struct net
*net
= &init_net
;
403 rv
= get_int(&mesg
, &newthreads
);
408 rv
= nfsd_svc(newthreads
, net
);
412 rv
= nfsd_nrthreads(net
);
414 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n", rv
);
418 * write_pool_threads - Set or report the current number of threads per pool
427 * buf: C string containing whitespace-
428 * separated unsigned integer values
429 * representing the number of NFSD
430 * threads to start in each pool
431 * size: non-zero length of C string in @buf
433 * On success: passed-in buffer filled with '\n'-terminated C
434 * string containing integer values representing the
435 * number of NFSD threads in each pool;
436 * return code is the size in bytes of the string
437 * On error: return code is zero or a negative errno value
439 static ssize_t
write_pool_threads(struct file
*file
, char *buf
, size_t size
)
441 /* if size > 0, look for an array of number of threads per node
442 * and apply them then write out number of threads per node as reply
450 struct net
*net
= &init_net
;
452 mutex_lock(&nfsd_mutex
);
453 npools
= nfsd_nrpools(net
);
456 * NFS is shut down. The admin can start it by
457 * writing to the threads file but NOT the pool_threads
458 * file, sorry. Report zero threads.
460 mutex_unlock(&nfsd_mutex
);
465 nthreads
= kcalloc(npools
, sizeof(int), GFP_KERNEL
);
467 if (nthreads
== NULL
)
471 for (i
= 0; i
< npools
; i
++) {
472 rv
= get_int(&mesg
, &nthreads
[i
]);
474 break; /* fewer numbers than pools */
476 goto out_free
; /* syntax error */
481 rv
= nfsd_set_nrthreads(i
, nthreads
, net
);
486 rv
= nfsd_get_nrthreads(npools
, nthreads
, net
);
491 size
= SIMPLE_TRANSACTION_LIMIT
;
492 for (i
= 0; i
< npools
&& size
> 0; i
++) {
493 snprintf(mesg
, size
, "%d%c", nthreads
[i
], (i
== npools
-1 ? '\n' : ' '));
501 mutex_unlock(&nfsd_mutex
);
505 static ssize_t
__write_versions(struct file
*file
, char *buf
, size_t size
)
508 char *vers
, *minorp
, sign
;
509 int len
, num
, remaining
;
513 struct net
*net
= &init_net
;
514 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
518 /* Cannot change versions without updating
519 * nn->nfsd_serv->sv_xdrsize, and reallocing
520 * rq_argp and rq_resp
523 if (buf
[size
-1] != '\n')
528 len
= qword_get(&mesg
, vers
, size
);
529 if (len
<= 0) return -EINVAL
;
532 if (sign
== '+' || sign
== '-')
533 num
= simple_strtol((vers
+1), &minorp
, 0);
535 num
= simple_strtol(vers
, &minorp
, 0);
536 if (*minorp
== '.') {
539 minor
= simple_strtoul(minorp
+1, NULL
, 0);
542 if (nfsd_minorversion(minor
, sign
== '-' ?
543 NFSD_CLEAR
: NFSD_SET
) < 0)
551 nfsd_vers(num
, sign
== '-' ? NFSD_CLEAR
: NFSD_SET
);
558 } while ((len
= qword_get(&mesg
, vers
, size
)) > 0);
559 /* If all get turned off, turn them back on, as
560 * having no versions is BAD
562 nfsd_reset_versions();
565 /* Now write current state into reply buffer */
568 remaining
= SIMPLE_TRANSACTION_LIMIT
;
569 for (num
=2 ; num
<= 4 ; num
++)
570 if (nfsd_vers(num
, NFSD_AVAIL
)) {
571 len
= snprintf(buf
, remaining
, "%s%c%d", sep
,
572 nfsd_vers(num
, NFSD_TEST
)?'+':'-',
582 if (nfsd_vers(4, NFSD_AVAIL
))
583 for (minor
= 1; minor
<= NFSD_SUPPORTED_MINOR_VERSION
;
585 len
= snprintf(buf
, remaining
, " %c4.%u",
586 (nfsd_vers(4, NFSD_TEST
) &&
587 nfsd_minorversion(minor
, NFSD_TEST
)) ?
598 len
= snprintf(buf
, remaining
, "\n");
605 * write_versions - Set or report the available NFS protocol versions
611 * On success: passed-in buffer filled with '\n'-terminated C
612 * string containing positive or negative integer
613 * values representing the current status of each
615 * return code is the size in bytes of the string
616 * On error: return code is zero or a negative errno value
621 * buf: C string containing whitespace-
622 * separated positive or negative
623 * integer values representing NFS
624 * protocol versions to enable ("+n")
626 * size: non-zero length of C string in @buf
628 * On success: status of zero or more protocol versions has
629 * been updated; passed-in buffer filled with
630 * '\n'-terminated C string containing positive
631 * or negative integer values representing the
632 * current status of each protocol version;
633 * return code is the size in bytes of the string
634 * On error: return code is zero or a negative errno value
636 static ssize_t
write_versions(struct file
*file
, char *buf
, size_t size
)
640 mutex_lock(&nfsd_mutex
);
641 rv
= __write_versions(file
, buf
, size
);
642 mutex_unlock(&nfsd_mutex
);
647 * Zero-length write. Return a list of NFSD's current listener
650 static ssize_t
__write_ports_names(char *buf
, struct net
*net
)
652 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
654 if (nn
->nfsd_serv
== NULL
)
656 return svc_xprt_names(nn
->nfsd_serv
, buf
, SIMPLE_TRANSACTION_LIMIT
);
660 * A single 'fd' number was written, in which case it must be for
661 * a socket of a supported family/protocol, and we use it as an
664 static ssize_t
__write_ports_addfd(char *buf
, struct net
*net
)
668 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
670 err
= get_int(&mesg
, &fd
);
671 if (err
!= 0 || fd
< 0)
674 err
= nfsd_create_serv(net
);
678 err
= svc_addsock(nn
->nfsd_serv
, fd
, buf
, SIMPLE_TRANSACTION_LIMIT
);
684 /* Decrease the count, but don't shut down the service */
685 nn
->nfsd_serv
->sv_nrthreads
--;
690 * A transport listener is added by writing it's transport name and
693 static ssize_t
__write_ports_addxprt(char *buf
, struct net
*net
)
696 struct svc_xprt
*xprt
;
698 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
700 if (sscanf(buf
, "%15s %5u", transport
, &port
) != 2)
703 if (port
< 1 || port
> USHRT_MAX
)
706 err
= nfsd_create_serv(net
);
710 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
711 PF_INET
, port
, SVC_SOCK_ANONYMOUS
);
715 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
716 PF_INET6
, port
, SVC_SOCK_ANONYMOUS
);
717 if (err
< 0 && err
!= -EAFNOSUPPORT
)
720 /* Decrease the count, but don't shut down the service */
721 nn
->nfsd_serv
->sv_nrthreads
--;
724 xprt
= svc_find_xprt(nn
->nfsd_serv
, transport
, net
, PF_INET
, port
);
726 svc_close_xprt(xprt
);
734 static ssize_t
__write_ports(struct file
*file
, char *buf
, size_t size
,
738 return __write_ports_names(buf
, net
);
741 return __write_ports_addfd(buf
, net
);
744 return __write_ports_addxprt(buf
, net
);
750 * write_ports - Pass a socket file descriptor or transport name to listen on
756 * On success: passed-in buffer filled with a '\n'-terminated C
757 * string containing a whitespace-separated list of
758 * named NFSD listeners;
759 * return code is the size in bytes of the string
760 * On error: return code is zero or a negative errno value
765 * buf: C string containing an unsigned
766 * integer value representing a bound
767 * but unconnected socket that is to be
768 * used as an NFSD listener; listen(3)
769 * must be called for a SOCK_STREAM
770 * socket, otherwise it is ignored
771 * size: non-zero length of C string in @buf
773 * On success: NFS service is started;
774 * passed-in buffer filled with a '\n'-terminated C
775 * string containing a unique alphanumeric name of
777 * return code is the size in bytes of the string
778 * On error: return code is a negative errno value
783 * buf: C string containing a transport
784 * name and an unsigned integer value
785 * representing the port to listen on,
786 * separated by whitespace
787 * size: non-zero length of C string in @buf
789 * On success: returns zero; NFS service is started
790 * On error: return code is a negative errno value
792 static ssize_t
write_ports(struct file
*file
, char *buf
, size_t size
)
795 struct net
*net
= &init_net
;
797 mutex_lock(&nfsd_mutex
);
798 rv
= __write_ports(file
, buf
, size
, net
);
799 mutex_unlock(&nfsd_mutex
);
804 int nfsd_max_blksize
;
807 * write_maxblksize - Set or report the current NFS blksize
816 * buf: C string containing an unsigned
817 * integer value representing the new
819 * size: non-zero length of C string in @buf
821 * On success: passed-in buffer filled with '\n'-terminated C string
822 * containing numeric value of the current NFS blksize
824 * return code is the size in bytes of the string
825 * On error: return code is zero or a negative errno value
827 static ssize_t
write_maxblksize(struct file
*file
, char *buf
, size_t size
)
830 struct net
*net
= &init_net
;
831 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
835 int rv
= get_int(&mesg
, &bsize
);
838 /* force bsize into allowed range and
839 * required alignment.
843 if (bsize
> NFSSVC_MAXBLKSIZE
)
844 bsize
= NFSSVC_MAXBLKSIZE
;
846 mutex_lock(&nfsd_mutex
);
848 mutex_unlock(&nfsd_mutex
);
851 nfsd_max_blksize
= bsize
;
852 mutex_unlock(&nfsd_mutex
);
855 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n",
859 #ifdef CONFIG_NFSD_V4
860 static ssize_t
__nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
861 time_t *time
, struct nfsd_net
*nn
)
869 rv
= get_int(&mesg
, &i
);
873 * Some sanity checking. We don't have a reason for
874 * these particular numbers, but problems with the
876 * - Too short: the briefest network outage may
877 * cause clients to lose all their locks. Also,
878 * the frequent polling may be wasteful.
879 * - Too long: do you really want reboot recovery
880 * to take more than an hour? Or to make other
881 * clients wait an hour before being able to
882 * revoke a dead client's locks?
884 if (i
< 10 || i
> 3600)
889 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%ld\n", *time
);
892 static ssize_t
nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
893 time_t *time
, struct nfsd_net
*nn
)
897 mutex_lock(&nfsd_mutex
);
898 rv
= __nfsd4_write_time(file
, buf
, size
, time
, nn
);
899 mutex_unlock(&nfsd_mutex
);
904 * write_leasetime - Set or report the current NFSv4 lease time
913 * buf: C string containing an unsigned
914 * integer value representing the new
915 * NFSv4 lease expiry time
916 * size: non-zero length of C string in @buf
918 * On success: passed-in buffer filled with '\n'-terminated C
919 * string containing unsigned integer value of the
920 * current lease expiry time;
921 * return code is the size in bytes of the string
922 * On error: return code is zero or a negative errno value
924 static ssize_t
write_leasetime(struct file
*file
, char *buf
, size_t size
)
926 struct nfsd_net
*nn
= net_generic(&init_net
, nfsd_net_id
);
927 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_lease
, nn
);
931 * write_gracetime - Set or report current NFSv4 grace period time
933 * As above, but sets the time of the NFSv4 grace period.
935 * Note this should never be set to less than the *previous*
936 * lease-period time, but we don't try to enforce this. (In the common
937 * case (a new boot), we don't know what the previous lease time was
940 static ssize_t
write_gracetime(struct file
*file
, char *buf
, size_t size
)
942 struct nfsd_net
*nn
= net_generic(&init_net
, nfsd_net_id
);
943 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_grace
, nn
);
946 static ssize_t
__write_recoverydir(struct file
*file
, char *buf
, size_t size
,
956 if (size
> PATH_MAX
|| buf
[size
-1] != '\n')
961 len
= qword_get(&mesg
, recdir
, size
);
965 status
= nfs4_reset_recoverydir(recdir
);
970 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%s\n",
975 * write_recoverydir - Set or report the pathname of the recovery directory
984 * buf: C string containing the pathname
985 * of the directory on a local file
986 * system containing permanent NFSv4
988 * size: non-zero length of C string in @buf
990 * On success: passed-in buffer filled with '\n'-terminated C string
991 * containing the current recovery pathname setting;
992 * return code is the size in bytes of the string
993 * On error: return code is zero or a negative errno value
995 static ssize_t
write_recoverydir(struct file
*file
, char *buf
, size_t size
)
998 struct nfsd_net
*nn
= net_generic(&init_net
, nfsd_net_id
);
1000 mutex_lock(&nfsd_mutex
);
1001 rv
= __write_recoverydir(file
, buf
, size
, nn
);
1002 mutex_unlock(&nfsd_mutex
);
1008 /*----------------------------------------------------------------------------*/
1010 * populating the filesystem.
1013 static int nfsd_fill_super(struct super_block
* sb
, void * data
, int silent
)
1015 static struct tree_descr nfsd_files
[] = {
1016 [NFSD_List
] = {"exports", &exports_operations
, S_IRUGO
},
1017 [NFSD_Export_features
] = {"export_features",
1018 &export_features_operations
, S_IRUGO
},
1019 [NFSD_FO_UnlockIP
] = {"unlock_ip",
1020 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1021 [NFSD_FO_UnlockFS
] = {"unlock_filesystem",
1022 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1023 [NFSD_Fh
] = {"filehandle", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1024 [NFSD_Threads
] = {"threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1025 [NFSD_Pool_Threads
] = {"pool_threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1026 [NFSD_Pool_Stats
] = {"pool_stats", &pool_stats_operations
, S_IRUGO
},
1027 [NFSD_Versions
] = {"versions", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1028 [NFSD_Ports
] = {"portlist", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1029 [NFSD_MaxBlkSize
] = {"max_block_size", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1030 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1031 [NFSD_SupportedEnctypes
] = {"supported_krb5_enctypes", &supported_enctypes_ops
, S_IRUGO
},
1032 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1033 #ifdef CONFIG_NFSD_V4
1034 [NFSD_Leasetime
] = {"nfsv4leasetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1035 [NFSD_Gracetime
] = {"nfsv4gracetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1036 [NFSD_RecoveryDir
] = {"nfsv4recoverydir", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1040 return simple_fill_super(sb
, 0x6e667364, nfsd_files
);
1043 static struct dentry
*nfsd_mount(struct file_system_type
*fs_type
,
1044 int flags
, const char *dev_name
, void *data
)
1046 return mount_single(fs_type
, flags
, data
, nfsd_fill_super
);
1049 static struct file_system_type nfsd_fs_type
= {
1050 .owner
= THIS_MODULE
,
1052 .mount
= nfsd_mount
,
1053 .kill_sb
= kill_litter_super
,
1056 #ifdef CONFIG_PROC_FS
1057 static int create_proc_exports_entry(void)
1059 struct proc_dir_entry
*entry
;
1061 entry
= proc_mkdir("fs/nfs", NULL
);
1064 entry
= proc_create("exports", 0, entry
, &exports_operations
);
1069 #else /* CONFIG_PROC_FS */
1070 static int create_proc_exports_entry(void)
1078 static __net_init
int nfsd_init_net(struct net
*net
)
1081 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
1083 retval
= nfsd_export_init(net
);
1085 goto out_export_error
;
1086 retval
= nfsd_idmap_init(net
);
1088 goto out_idmap_error
;
1089 nn
->nfsd4_lease
= 90; /* default lease time */
1090 nn
->nfsd4_grace
= 90;
1094 nfsd_export_shutdown(net
);
1099 static __net_exit
void nfsd_exit_net(struct net
*net
)
1101 nfsd_idmap_shutdown(net
);
1102 nfsd_export_shutdown(net
);
1105 static struct pernet_operations nfsd_net_ops
= {
1106 .init
= nfsd_init_net
,
1107 .exit
= nfsd_exit_net
,
1109 .size
= sizeof(struct nfsd_net
),
1112 static int __init
init_nfsd(void)
1115 printk(KERN_INFO
"Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1117 retval
= register_cld_notifier();
1120 retval
= register_pernet_subsys(&nfsd_net_ops
);
1122 goto out_unregister_notifier
;
1123 retval
= nfsd4_init_slabs();
1125 goto out_unregister_pernet
;
1127 retval
= nfsd_fault_inject_init(); /* nfsd fault injection controls */
1129 goto out_free_slabs
;
1130 nfsd_stat_init(); /* Statistics */
1131 retval
= nfsd_reply_cache_init();
1134 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1135 retval
= create_proc_exports_entry();
1137 goto out_free_lockd
;
1138 retval
= register_filesystem(&nfsd_fs_type
);
1143 remove_proc_entry("fs/nfs/exports", NULL
);
1144 remove_proc_entry("fs/nfs", NULL
);
1146 nfsd_lockd_shutdown();
1147 nfsd_reply_cache_shutdown();
1149 nfsd_stat_shutdown();
1150 nfsd_fault_inject_cleanup();
1153 out_unregister_pernet
:
1154 unregister_pernet_subsys(&nfsd_net_ops
);
1155 out_unregister_notifier
:
1156 unregister_cld_notifier();
1160 static void __exit
exit_nfsd(void)
1162 nfsd_reply_cache_shutdown();
1163 remove_proc_entry("fs/nfs/exports", NULL
);
1164 remove_proc_entry("fs/nfs", NULL
);
1165 nfsd_stat_shutdown();
1166 nfsd_lockd_shutdown();
1168 nfsd_fault_inject_cleanup();
1169 unregister_filesystem(&nfsd_fs_type
);
1170 unregister_pernet_subsys(&nfsd_net_ops
);
1171 unregister_cld_notifier();
1174 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1175 MODULE_LICENSE("GPL");
1176 module_init(init_nfsd
)
1177 module_exit(exit_nfsd
)