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.
38 NFSD_Reply_Cache_Stats
,
42 NFSD_SupportedEnctypes
,
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
55 * write() for these nodes.
57 static ssize_t
write_filehandle(struct file
*file
, char *buf
, size_t size
);
58 static ssize_t
write_unlock_ip(struct file
*file
, char *buf
, size_t size
);
59 static ssize_t
write_unlock_fs(struct file
*file
, char *buf
, size_t size
);
60 static ssize_t
write_threads(struct file
*file
, char *buf
, size_t size
);
61 static ssize_t
write_pool_threads(struct file
*file
, char *buf
, size_t size
);
62 static ssize_t
write_versions(struct file
*file
, char *buf
, size_t size
);
63 static ssize_t
write_ports(struct file
*file
, char *buf
, size_t size
);
64 static ssize_t
write_maxblksize(struct file
*file
, char *buf
, size_t size
);
66 static ssize_t
write_leasetime(struct file
*file
, char *buf
, size_t size
);
67 static ssize_t
write_gracetime(struct file
*file
, char *buf
, size_t size
);
68 static ssize_t
write_recoverydir(struct file
*file
, char *buf
, size_t size
);
71 static ssize_t (*write_op
[])(struct file
*, char *, size_t) = {
72 [NFSD_Fh
] = write_filehandle
,
73 [NFSD_FO_UnlockIP
] = write_unlock_ip
,
74 [NFSD_FO_UnlockFS
] = write_unlock_fs
,
75 [NFSD_Threads
] = write_threads
,
76 [NFSD_Pool_Threads
] = write_pool_threads
,
77 [NFSD_Versions
] = write_versions
,
78 [NFSD_Ports
] = write_ports
,
79 [NFSD_MaxBlkSize
] = write_maxblksize
,
81 [NFSD_Leasetime
] = write_leasetime
,
82 [NFSD_Gracetime
] = write_gracetime
,
83 [NFSD_RecoveryDir
] = write_recoverydir
,
87 static ssize_t
nfsctl_transaction_write(struct file
*file
, const char __user
*buf
, size_t size
, loff_t
*pos
)
89 ino_t ino
= file_inode(file
)->i_ino
;
93 if (ino
>= ARRAY_SIZE(write_op
) || !write_op
[ino
])
96 data
= simple_transaction_get(file
, buf
, size
);
100 rv
= write_op
[ino
](file
, data
, size
);
102 simple_transaction_set(file
, rv
);
108 static ssize_t
nfsctl_transaction_read(struct file
*file
, char __user
*buf
, size_t size
, loff_t
*pos
)
110 if (! file
->private_data
) {
111 /* An attempt to read a transaction file without writing
112 * causes a 0-byte write so that the file can return
115 ssize_t rv
= nfsctl_transaction_write(file
, buf
, 0, pos
);
119 return simple_transaction_read(file
, buf
, size
, pos
);
122 static const struct file_operations transaction_ops
= {
123 .write
= nfsctl_transaction_write
,
124 .read
= nfsctl_transaction_read
,
125 .release
= simple_transaction_release
,
126 .llseek
= default_llseek
,
129 static int exports_net_open(struct net
*net
, struct file
*file
)
132 struct seq_file
*seq
;
133 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
135 err
= seq_open(file
, &nfs_exports_op
);
139 seq
= file
->private_data
;
140 seq
->private = nn
->svc_export_cache
;
144 static int exports_proc_open(struct inode
*inode
, struct file
*file
)
146 return exports_net_open(current
->nsproxy
->net_ns
, file
);
149 static const struct file_operations exports_proc_operations
= {
150 .open
= exports_proc_open
,
153 .release
= seq_release
,
154 .owner
= THIS_MODULE
,
157 static int exports_nfsd_open(struct inode
*inode
, struct file
*file
)
159 return exports_net_open(inode
->i_sb
->s_fs_info
, file
);
162 static const struct file_operations exports_nfsd_operations
= {
163 .open
= exports_nfsd_open
,
166 .release
= seq_release
,
167 .owner
= THIS_MODULE
,
170 static int export_features_show(struct seq_file
*m
, void *v
)
172 seq_printf(m
, "0x%x 0x%x\n", NFSEXP_ALLFLAGS
, NFSEXP_SECINFO_FLAGS
);
176 static int export_features_open(struct inode
*inode
, struct file
*file
)
178 return single_open(file
, export_features_show
, NULL
);
181 static const struct file_operations export_features_operations
= {
182 .open
= export_features_open
,
185 .release
= single_release
,
188 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
189 static int supported_enctypes_show(struct seq_file
*m
, void *v
)
191 seq_printf(m
, KRB5_SUPPORTED_ENCTYPES
);
195 static int supported_enctypes_open(struct inode
*inode
, struct file
*file
)
197 return single_open(file
, supported_enctypes_show
, NULL
);
200 static const struct file_operations supported_enctypes_ops
= {
201 .open
= supported_enctypes_open
,
204 .release
= single_release
,
206 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
208 static const struct file_operations pool_stats_operations
= {
209 .open
= nfsd_pool_stats_open
,
212 .release
= nfsd_pool_stats_release
,
213 .owner
= THIS_MODULE
,
216 static struct file_operations reply_cache_stats_operations
= {
217 .open
= nfsd_reply_cache_stats_open
,
220 .release
= single_release
,
223 /*----------------------------------------------------------------------------*/
225 * payload - write methods
230 * write_unlock_ip - Release all locks used by a client
235 * buf: '\n'-terminated C string containing a
236 * presentation format IP address
237 * size: length of C string in @buf
239 * On success: returns zero if all specified locks were released;
240 * returns one if one or more locks were not released
241 * On error: return code is negative errno value
243 static ssize_t
write_unlock_ip(struct file
*file
, char *buf
, size_t size
)
245 struct sockaddr_storage address
;
246 struct sockaddr
*sap
= (struct sockaddr
*)&address
;
247 size_t salen
= sizeof(address
);
249 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
255 if (buf
[size
-1] != '\n')
259 if (qword_get(&buf
, fo_path
, size
) < 0)
262 if (rpc_pton(net
, fo_path
, size
, sap
, salen
) == 0)
265 return nlmsvc_unlock_all_by_ip(sap
);
269 * write_unlock_fs - Release all locks on a local file system
274 * buf: '\n'-terminated C string containing the
275 * absolute pathname of a local file system
276 * size: length of C string in @buf
278 * On success: returns zero if all specified locks were released;
279 * returns one if one or more locks were not released
280 * On error: return code is negative errno value
282 static ssize_t
write_unlock_fs(struct file
*file
, char *buf
, size_t size
)
292 if (buf
[size
-1] != '\n')
296 if (qword_get(&buf
, fo_path
, size
) < 0)
299 error
= kern_path(fo_path
, 0, &path
);
304 * XXX: Needs better sanity checking. Otherwise we could end up
305 * releasing locks on the wrong file system.
308 * 1. Does the path refer to a directory?
309 * 2. Is that directory a mount point, or
310 * 3. Is that directory the root of an exported file system?
312 error
= nlmsvc_unlock_all_by_sb(path
.dentry
->d_sb
);
319 * write_filehandle - Get a variable-length NFS file handle by path
321 * On input, the buffer contains a '\n'-terminated C string comprised of
322 * three alphanumeric words separated by whitespace. The string may
323 * contain escape sequences.
327 * domain: client domain name
328 * path: export pathname
329 * maxsize: numeric maximum size of
331 * size: length of C string in @buf
333 * On success: passed-in buffer filled with '\n'-terminated C
334 * string containing a ASCII hex text version
335 * of the NFS file handle;
336 * return code is the size in bytes of the string
337 * On error: return code is negative errno value
339 static ssize_t
write_filehandle(struct file
*file
, char *buf
, size_t size
)
342 int uninitialized_var(maxsize
);
345 struct auth_domain
*dom
;
347 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
352 if (buf
[size
-1] != '\n')
357 len
= qword_get(&mesg
, dname
, size
);
362 len
= qword_get(&mesg
, path
, size
);
366 len
= get_int(&mesg
, &maxsize
);
370 if (maxsize
< NFS_FHSIZE
)
372 maxsize
= min(maxsize
, NFS3_FHSIZE
);
374 if (qword_get(&mesg
, mesg
, size
)>0)
377 /* we have all the words, they are in buf.. */
378 dom
= unix_domain_find(dname
);
382 len
= exp_rootfh(net
, dom
, path
, &fh
, maxsize
);
383 auth_domain_put(dom
);
388 len
= SIMPLE_TRANSACTION_LIMIT
;
389 qword_addhex(&mesg
, &len
, (char*)&fh
.fh_base
, fh
.fh_size
);
395 * write_threads - Start NFSD, or report the current number of running threads
401 * On success: passed-in buffer filled with '\n'-terminated C
402 * string numeric value representing the number of
403 * running NFSD threads;
404 * return code is the size in bytes of the string
405 * On error: return code is zero
410 * buf: C string containing an unsigned
411 * integer value representing the
412 * number of NFSD threads to start
413 * size: non-zero length of C string in @buf
415 * On success: NFS service is started;
416 * passed-in buffer filled with '\n'-terminated C
417 * string numeric value representing the number of
418 * running NFSD threads;
419 * return code is the size in bytes of the string
420 * On error: return code is zero or a negative errno value
422 static ssize_t
write_threads(struct file
*file
, char *buf
, size_t size
)
426 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
430 rv
= get_int(&mesg
, &newthreads
);
435 rv
= nfsd_svc(newthreads
, net
);
439 rv
= nfsd_nrthreads(net
);
441 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n", rv
);
445 * write_pool_threads - Set or report the current number of threads per pool
454 * buf: C string containing whitespace-
455 * separated unsigned integer values
456 * representing the number of NFSD
457 * threads to start in each pool
458 * size: non-zero length of C string in @buf
460 * On success: passed-in buffer filled with '\n'-terminated C
461 * string containing integer values representing the
462 * number of NFSD threads in each pool;
463 * return code is the size in bytes of the string
464 * On error: return code is zero or a negative errno value
466 static ssize_t
write_pool_threads(struct file
*file
, char *buf
, size_t size
)
468 /* if size > 0, look for an array of number of threads per node
469 * and apply them then write out number of threads per node as reply
477 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
479 mutex_lock(&nfsd_mutex
);
480 npools
= nfsd_nrpools(net
);
483 * NFS is shut down. The admin can start it by
484 * writing to the threads file but NOT the pool_threads
485 * file, sorry. Report zero threads.
487 mutex_unlock(&nfsd_mutex
);
492 nthreads
= kcalloc(npools
, sizeof(int), GFP_KERNEL
);
494 if (nthreads
== NULL
)
498 for (i
= 0; i
< npools
; i
++) {
499 rv
= get_int(&mesg
, &nthreads
[i
]);
501 break; /* fewer numbers than pools */
503 goto out_free
; /* syntax error */
508 rv
= nfsd_set_nrthreads(i
, nthreads
, net
);
513 rv
= nfsd_get_nrthreads(npools
, nthreads
, net
);
518 size
= SIMPLE_TRANSACTION_LIMIT
;
519 for (i
= 0; i
< npools
&& size
> 0; i
++) {
520 snprintf(mesg
, size
, "%d%c", nthreads
[i
], (i
== npools
-1 ? '\n' : ' '));
528 mutex_unlock(&nfsd_mutex
);
532 static ssize_t
__write_versions(struct file
*file
, char *buf
, size_t size
)
535 char *vers
, *minorp
, sign
;
536 int len
, num
, remaining
;
540 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
541 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
545 /* Cannot change versions without updating
546 * nn->nfsd_serv->sv_xdrsize, and reallocing
547 * rq_argp and rq_resp
550 if (buf
[size
-1] != '\n')
555 len
= qword_get(&mesg
, vers
, size
);
556 if (len
<= 0) return -EINVAL
;
559 if (sign
== '+' || sign
== '-')
560 num
= simple_strtol((vers
+1), &minorp
, 0);
562 num
= simple_strtol(vers
, &minorp
, 0);
563 if (*minorp
== '.') {
566 minor
= simple_strtoul(minorp
+1, NULL
, 0);
569 if (nfsd_minorversion(minor
, sign
== '-' ?
570 NFSD_CLEAR
: NFSD_SET
) < 0)
578 nfsd_vers(num
, sign
== '-' ? NFSD_CLEAR
: NFSD_SET
);
585 } while ((len
= qword_get(&mesg
, vers
, size
)) > 0);
586 /* If all get turned off, turn them back on, as
587 * having no versions is BAD
589 nfsd_reset_versions();
592 /* Now write current state into reply buffer */
595 remaining
= SIMPLE_TRANSACTION_LIMIT
;
596 for (num
=2 ; num
<= 4 ; num
++)
597 if (nfsd_vers(num
, NFSD_AVAIL
)) {
598 len
= snprintf(buf
, remaining
, "%s%c%d", sep
,
599 nfsd_vers(num
, NFSD_TEST
)?'+':'-',
609 if (nfsd_vers(4, NFSD_AVAIL
))
610 for (minor
= 1; minor
<= NFSD_SUPPORTED_MINOR_VERSION
;
612 len
= snprintf(buf
, remaining
, " %c4.%u",
613 (nfsd_vers(4, NFSD_TEST
) &&
614 nfsd_minorversion(minor
, NFSD_TEST
)) ?
625 len
= snprintf(buf
, remaining
, "\n");
632 * write_versions - Set or report the available NFS protocol versions
638 * On success: passed-in buffer filled with '\n'-terminated C
639 * string containing positive or negative integer
640 * values representing the current status of each
642 * return code is the size in bytes of the string
643 * On error: return code is zero or a negative errno value
648 * buf: C string containing whitespace-
649 * separated positive or negative
650 * integer values representing NFS
651 * protocol versions to enable ("+n")
653 * size: non-zero length of C string in @buf
655 * On success: status of zero or more protocol versions has
656 * been updated; passed-in buffer filled with
657 * '\n'-terminated C string containing positive
658 * or negative integer values representing the
659 * current status of each protocol version;
660 * return code is the size in bytes of the string
661 * On error: return code is zero or a negative errno value
663 static ssize_t
write_versions(struct file
*file
, char *buf
, size_t size
)
667 mutex_lock(&nfsd_mutex
);
668 rv
= __write_versions(file
, buf
, size
);
669 mutex_unlock(&nfsd_mutex
);
674 * Zero-length write. Return a list of NFSD's current listener
677 static ssize_t
__write_ports_names(char *buf
, struct net
*net
)
679 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
681 if (nn
->nfsd_serv
== NULL
)
683 return svc_xprt_names(nn
->nfsd_serv
, buf
, SIMPLE_TRANSACTION_LIMIT
);
687 * A single 'fd' number was written, in which case it must be for
688 * a socket of a supported family/protocol, and we use it as an
691 static ssize_t
__write_ports_addfd(char *buf
, struct net
*net
)
695 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
697 err
= get_int(&mesg
, &fd
);
698 if (err
!= 0 || fd
< 0)
701 if (svc_alien_sock(net
, fd
)) {
702 printk(KERN_ERR
"%s: socket net is different to NFSd's one\n", __func__
);
706 err
= nfsd_create_serv(net
);
710 err
= svc_addsock(nn
->nfsd_serv
, fd
, buf
, SIMPLE_TRANSACTION_LIMIT
);
716 /* Decrease the count, but don't shut down the service */
717 nn
->nfsd_serv
->sv_nrthreads
--;
722 * A transport listener is added by writing it's transport name and
725 static ssize_t
__write_ports_addxprt(char *buf
, struct net
*net
)
728 struct svc_xprt
*xprt
;
730 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
732 if (sscanf(buf
, "%15s %5u", transport
, &port
) != 2)
735 if (port
< 1 || port
> USHRT_MAX
)
738 err
= nfsd_create_serv(net
);
742 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
743 PF_INET
, port
, SVC_SOCK_ANONYMOUS
);
747 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
748 PF_INET6
, port
, SVC_SOCK_ANONYMOUS
);
749 if (err
< 0 && err
!= -EAFNOSUPPORT
)
752 /* Decrease the count, but don't shut down the service */
753 nn
->nfsd_serv
->sv_nrthreads
--;
756 xprt
= svc_find_xprt(nn
->nfsd_serv
, transport
, net
, PF_INET
, port
);
758 svc_close_xprt(xprt
);
766 static ssize_t
__write_ports(struct file
*file
, char *buf
, size_t size
,
770 return __write_ports_names(buf
, net
);
773 return __write_ports_addfd(buf
, net
);
776 return __write_ports_addxprt(buf
, net
);
782 * write_ports - Pass a socket file descriptor or transport name to listen on
788 * On success: passed-in buffer filled with a '\n'-terminated C
789 * string containing a whitespace-separated list of
790 * named NFSD listeners;
791 * return code is the size in bytes of the string
792 * On error: return code is zero or a negative errno value
797 * buf: C string containing an unsigned
798 * integer value representing a bound
799 * but unconnected socket that is to be
800 * used as an NFSD listener; listen(3)
801 * must be called for a SOCK_STREAM
802 * socket, otherwise it is ignored
803 * size: non-zero length of C string in @buf
805 * On success: NFS service is started;
806 * passed-in buffer filled with a '\n'-terminated C
807 * string containing a unique alphanumeric name of
809 * return code is the size in bytes of the string
810 * On error: return code is a negative errno value
815 * buf: C string containing a transport
816 * name and an unsigned integer value
817 * representing the port to listen on,
818 * separated by whitespace
819 * size: non-zero length of C string in @buf
821 * On success: returns zero; NFS service is started
822 * On error: return code is a negative errno value
824 static ssize_t
write_ports(struct file
*file
, char *buf
, size_t size
)
827 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
829 mutex_lock(&nfsd_mutex
);
830 rv
= __write_ports(file
, buf
, size
, net
);
831 mutex_unlock(&nfsd_mutex
);
836 int nfsd_max_blksize
;
839 * write_maxblksize - Set or report the current NFS blksize
848 * buf: C string containing an unsigned
849 * integer value representing the new
851 * size: non-zero length of C string in @buf
853 * On success: passed-in buffer filled with '\n'-terminated C string
854 * containing numeric value of the current NFS blksize
856 * return code is the size in bytes of the string
857 * On error: return code is zero or a negative errno value
859 static ssize_t
write_maxblksize(struct file
*file
, char *buf
, size_t size
)
862 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
863 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
867 int rv
= get_int(&mesg
, &bsize
);
870 /* force bsize into allowed range and
871 * required alignment.
873 bsize
= max_t(int, bsize
, 1024);
874 bsize
= min_t(int, bsize
, NFSSVC_MAXBLKSIZE
);
876 mutex_lock(&nfsd_mutex
);
878 mutex_unlock(&nfsd_mutex
);
881 nfsd_max_blksize
= bsize
;
882 mutex_unlock(&nfsd_mutex
);
885 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n",
889 #ifdef CONFIG_NFSD_V4
890 static ssize_t
__nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
891 time_t *time
, struct nfsd_net
*nn
)
899 rv
= get_int(&mesg
, &i
);
903 * Some sanity checking. We don't have a reason for
904 * these particular numbers, but problems with the
906 * - Too short: the briefest network outage may
907 * cause clients to lose all their locks. Also,
908 * the frequent polling may be wasteful.
909 * - Too long: do you really want reboot recovery
910 * to take more than an hour? Or to make other
911 * clients wait an hour before being able to
912 * revoke a dead client's locks?
914 if (i
< 10 || i
> 3600)
919 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%ld\n", *time
);
922 static ssize_t
nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
923 time_t *time
, struct nfsd_net
*nn
)
927 mutex_lock(&nfsd_mutex
);
928 rv
= __nfsd4_write_time(file
, buf
, size
, time
, nn
);
929 mutex_unlock(&nfsd_mutex
);
934 * write_leasetime - Set or report the current NFSv4 lease time
943 * buf: C string containing an unsigned
944 * integer value representing the new
945 * NFSv4 lease expiry time
946 * size: non-zero length of C string in @buf
948 * On success: passed-in buffer filled with '\n'-terminated C
949 * string containing unsigned integer value of the
950 * current lease expiry time;
951 * return code is the size in bytes of the string
952 * On error: return code is zero or a negative errno value
954 static ssize_t
write_leasetime(struct file
*file
, char *buf
, size_t size
)
956 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
957 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
958 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_lease
, nn
);
962 * write_gracetime - Set or report current NFSv4 grace period time
964 * As above, but sets the time of the NFSv4 grace period.
966 * Note this should never be set to less than the *previous*
967 * lease-period time, but we don't try to enforce this. (In the common
968 * case (a new boot), we don't know what the previous lease time was
971 static ssize_t
write_gracetime(struct file
*file
, char *buf
, size_t size
)
973 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
974 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
975 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_grace
, nn
);
978 static ssize_t
__write_recoverydir(struct file
*file
, char *buf
, size_t size
,
988 if (size
> PATH_MAX
|| buf
[size
-1] != '\n')
993 len
= qword_get(&mesg
, recdir
, size
);
997 status
= nfs4_reset_recoverydir(recdir
);
1002 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%s\n",
1003 nfs4_recoverydir());
1007 * write_recoverydir - Set or report the pathname of the recovery directory
1016 * buf: C string containing the pathname
1017 * of the directory on a local file
1018 * system containing permanent NFSv4
1020 * size: non-zero length of C string in @buf
1022 * On success: passed-in buffer filled with '\n'-terminated C string
1023 * containing the current recovery pathname setting;
1024 * return code is the size in bytes of the string
1025 * On error: return code is zero or a negative errno value
1027 static ssize_t
write_recoverydir(struct file
*file
, char *buf
, size_t size
)
1030 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
1031 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
1033 mutex_lock(&nfsd_mutex
);
1034 rv
= __write_recoverydir(file
, buf
, size
, nn
);
1035 mutex_unlock(&nfsd_mutex
);
1041 /*----------------------------------------------------------------------------*/
1043 * populating the filesystem.
1046 static int nfsd_fill_super(struct super_block
* sb
, void * data
, int silent
)
1048 static struct tree_descr nfsd_files
[] = {
1049 [NFSD_List
] = {"exports", &exports_nfsd_operations
, S_IRUGO
},
1050 [NFSD_Export_features
] = {"export_features",
1051 &export_features_operations
, S_IRUGO
},
1052 [NFSD_FO_UnlockIP
] = {"unlock_ip",
1053 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1054 [NFSD_FO_UnlockFS
] = {"unlock_filesystem",
1055 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1056 [NFSD_Fh
] = {"filehandle", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1057 [NFSD_Threads
] = {"threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1058 [NFSD_Pool_Threads
] = {"pool_threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1059 [NFSD_Pool_Stats
] = {"pool_stats", &pool_stats_operations
, S_IRUGO
},
1060 [NFSD_Reply_Cache_Stats
] = {"reply_cache_stats", &reply_cache_stats_operations
, S_IRUGO
},
1061 [NFSD_Versions
] = {"versions", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1062 [NFSD_Ports
] = {"portlist", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1063 [NFSD_MaxBlkSize
] = {"max_block_size", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1064 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1065 [NFSD_SupportedEnctypes
] = {"supported_krb5_enctypes", &supported_enctypes_ops
, S_IRUGO
},
1066 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1067 #ifdef CONFIG_NFSD_V4
1068 [NFSD_Leasetime
] = {"nfsv4leasetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1069 [NFSD_Gracetime
] = {"nfsv4gracetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1070 [NFSD_RecoveryDir
] = {"nfsv4recoverydir", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1074 struct net
*net
= data
;
1077 ret
= simple_fill_super(sb
, 0x6e667364, nfsd_files
);
1080 sb
->s_fs_info
= get_net(net
);
1084 static struct dentry
*nfsd_mount(struct file_system_type
*fs_type
,
1085 int flags
, const char *dev_name
, void *data
)
1087 return mount_ns(fs_type
, flags
, current
->nsproxy
->net_ns
, nfsd_fill_super
);
1090 static void nfsd_umount(struct super_block
*sb
)
1092 struct net
*net
= sb
->s_fs_info
;
1094 kill_litter_super(sb
);
1098 static struct file_system_type nfsd_fs_type
= {
1099 .owner
= THIS_MODULE
,
1101 .mount
= nfsd_mount
,
1102 .kill_sb
= nfsd_umount
,
1104 MODULE_ALIAS_FS("nfsd");
1106 #ifdef CONFIG_PROC_FS
1107 static int create_proc_exports_entry(void)
1109 struct proc_dir_entry
*entry
;
1111 entry
= proc_mkdir("fs/nfs", NULL
);
1114 entry
= proc_create("exports", 0, entry
,
1115 &exports_proc_operations
);
1117 remove_proc_entry("fs/nfs", NULL
);
1122 #else /* CONFIG_PROC_FS */
1123 static int create_proc_exports_entry(void)
1131 static __net_init
int nfsd_init_net(struct net
*net
)
1134 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
1136 retval
= nfsd_export_init(net
);
1138 goto out_export_error
;
1139 retval
= nfsd_idmap_init(net
);
1141 goto out_idmap_error
;
1142 nn
->nfsd4_lease
= 90; /* default lease time */
1143 nn
->nfsd4_grace
= 90;
1147 nfsd_export_shutdown(net
);
1152 static __net_exit
void nfsd_exit_net(struct net
*net
)
1154 nfsd_idmap_shutdown(net
);
1155 nfsd_export_shutdown(net
);
1158 static struct pernet_operations nfsd_net_ops
= {
1159 .init
= nfsd_init_net
,
1160 .exit
= nfsd_exit_net
,
1162 .size
= sizeof(struct nfsd_net
),
1165 static int __init
init_nfsd(void)
1168 printk(KERN_INFO
"Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1170 retval
= register_cld_notifier();
1173 retval
= register_pernet_subsys(&nfsd_net_ops
);
1175 goto out_unregister_notifier
;
1176 retval
= nfsd4_init_slabs();
1178 goto out_unregister_pernet
;
1179 retval
= nfsd_fault_inject_init(); /* nfsd fault injection controls */
1181 goto out_free_slabs
;
1182 nfsd_stat_init(); /* Statistics */
1183 retval
= nfsd_reply_cache_init();
1186 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1187 retval
= create_proc_exports_entry();
1189 goto out_free_lockd
;
1190 retval
= register_filesystem(&nfsd_fs_type
);
1195 remove_proc_entry("fs/nfs/exports", NULL
);
1196 remove_proc_entry("fs/nfs", NULL
);
1198 nfsd_lockd_shutdown();
1199 nfsd_reply_cache_shutdown();
1201 nfsd_stat_shutdown();
1202 nfsd_fault_inject_cleanup();
1205 out_unregister_pernet
:
1206 unregister_pernet_subsys(&nfsd_net_ops
);
1207 out_unregister_notifier
:
1208 unregister_cld_notifier();
1212 static void __exit
exit_nfsd(void)
1214 nfsd_reply_cache_shutdown();
1215 remove_proc_entry("fs/nfs/exports", NULL
);
1216 remove_proc_entry("fs/nfs", NULL
);
1217 nfsd_stat_shutdown();
1218 nfsd_lockd_shutdown();
1220 nfsd_fault_inject_cleanup();
1221 unregister_filesystem(&nfsd_fs_type
);
1222 unregister_pernet_subsys(&nfsd_net_ops
);
1223 unregister_cld_notifier();
1226 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1227 MODULE_LICENSE("GPL");
1228 module_init(init_nfsd
)
1229 module_exit(exit_nfsd
)