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_inode(file
)->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_net_open(struct net
*net
, struct file
*file
)
131 struct seq_file
*seq
;
132 struct nfsd_net
*nn
= net_generic(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 int exports_proc_open(struct inode
*inode
, struct file
*file
)
145 return exports_net_open(current
->nsproxy
->net_ns
, file
);
148 static const struct file_operations exports_proc_operations
= {
149 .open
= exports_proc_open
,
152 .release
= seq_release
,
153 .owner
= THIS_MODULE
,
156 static int exports_nfsd_open(struct inode
*inode
, struct file
*file
)
158 return exports_net_open(inode
->i_sb
->s_fs_info
, file
);
161 static const struct file_operations exports_nfsd_operations
= {
162 .open
= exports_nfsd_open
,
165 .release
= seq_release
,
166 .owner
= THIS_MODULE
,
169 static int export_features_show(struct seq_file
*m
, void *v
)
171 seq_printf(m
, "0x%x 0x%x\n", NFSEXP_ALLFLAGS
, NFSEXP_SECINFO_FLAGS
);
175 static int export_features_open(struct inode
*inode
, struct file
*file
)
177 return single_open(file
, export_features_show
, NULL
);
180 static struct file_operations export_features_operations
= {
181 .open
= export_features_open
,
184 .release
= single_release
,
187 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
188 static int supported_enctypes_show(struct seq_file
*m
, void *v
)
190 seq_printf(m
, KRB5_SUPPORTED_ENCTYPES
);
194 static int supported_enctypes_open(struct inode
*inode
, struct file
*file
)
196 return single_open(file
, supported_enctypes_show
, NULL
);
199 static struct file_operations supported_enctypes_ops
= {
200 .open
= supported_enctypes_open
,
203 .release
= single_release
,
205 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
207 static const struct file_operations pool_stats_operations
= {
208 .open
= nfsd_pool_stats_open
,
211 .release
= nfsd_pool_stats_release
,
212 .owner
= THIS_MODULE
,
215 /*----------------------------------------------------------------------------*/
217 * payload - write methods
222 * write_unlock_ip - Release all locks used by a client
227 * buf: '\n'-terminated C string containing a
228 * presentation format IP address
229 * size: length of C string in @buf
231 * On success: returns zero if all specified locks were released;
232 * returns one if one or more locks were not released
233 * On error: return code is negative errno value
235 static ssize_t
write_unlock_ip(struct file
*file
, char *buf
, size_t size
)
237 struct sockaddr_storage address
;
238 struct sockaddr
*sap
= (struct sockaddr
*)&address
;
239 size_t salen
= sizeof(address
);
241 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
247 if (buf
[size
-1] != '\n')
251 if (qword_get(&buf
, fo_path
, size
) < 0)
254 if (rpc_pton(net
, fo_path
, size
, sap
, salen
) == 0)
257 return nlmsvc_unlock_all_by_ip(sap
);
261 * write_unlock_fs - Release all locks on a local file system
266 * buf: '\n'-terminated C string containing the
267 * absolute pathname of a local file system
268 * size: length of C string in @buf
270 * On success: returns zero if all specified locks were released;
271 * returns one if one or more locks were not released
272 * On error: return code is negative errno value
274 static ssize_t
write_unlock_fs(struct file
*file
, char *buf
, size_t size
)
284 if (buf
[size
-1] != '\n')
288 if (qword_get(&buf
, fo_path
, size
) < 0)
291 error
= kern_path(fo_path
, 0, &path
);
296 * XXX: Needs better sanity checking. Otherwise we could end up
297 * releasing locks on the wrong file system.
300 * 1. Does the path refer to a directory?
301 * 2. Is that directory a mount point, or
302 * 3. Is that directory the root of an exported file system?
304 error
= nlmsvc_unlock_all_by_sb(path
.dentry
->d_sb
);
311 * write_filehandle - Get a variable-length NFS file handle by path
313 * On input, the buffer contains a '\n'-terminated C string comprised of
314 * three alphanumeric words separated by whitespace. The string may
315 * contain escape sequences.
319 * domain: client domain name
320 * path: export pathname
321 * maxsize: numeric maximum size of
323 * size: length of C string in @buf
325 * On success: passed-in buffer filled with '\n'-terminated C
326 * string containing a ASCII hex text version
327 * of the NFS file handle;
328 * return code is the size in bytes of the string
329 * On error: return code is negative errno value
331 static ssize_t
write_filehandle(struct file
*file
, char *buf
, size_t size
)
334 int uninitialized_var(maxsize
);
337 struct auth_domain
*dom
;
339 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
344 if (buf
[size
-1] != '\n')
349 len
= qword_get(&mesg
, dname
, size
);
354 len
= qword_get(&mesg
, path
, size
);
358 len
= get_int(&mesg
, &maxsize
);
362 if (maxsize
< NFS_FHSIZE
)
364 if (maxsize
> NFS3_FHSIZE
)
365 maxsize
= NFS3_FHSIZE
;
367 if (qword_get(&mesg
, mesg
, size
)>0)
370 /* we have all the words, they are in buf.. */
371 dom
= unix_domain_find(dname
);
375 len
= exp_rootfh(net
, dom
, path
, &fh
, maxsize
);
376 auth_domain_put(dom
);
381 len
= SIMPLE_TRANSACTION_LIMIT
;
382 qword_addhex(&mesg
, &len
, (char*)&fh
.fh_base
, fh
.fh_size
);
388 * write_threads - Start NFSD, or report the current number of running threads
394 * On success: passed-in buffer filled with '\n'-terminated C
395 * string numeric value representing the number of
396 * running NFSD threads;
397 * return code is the size in bytes of the string
398 * On error: return code is zero
403 * buf: C string containing an unsigned
404 * integer value representing the
405 * number of NFSD threads to start
406 * size: non-zero length of C string in @buf
408 * On success: NFS service is started;
409 * passed-in buffer filled with '\n'-terminated C
410 * string numeric value representing the number of
411 * running NFSD threads;
412 * return code is the size in bytes of the string
413 * On error: return code is zero or a negative errno value
415 static ssize_t
write_threads(struct file
*file
, char *buf
, size_t size
)
419 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
423 rv
= get_int(&mesg
, &newthreads
);
428 rv
= nfsd_svc(newthreads
, net
);
432 rv
= nfsd_nrthreads(net
);
434 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n", rv
);
438 * write_pool_threads - Set or report the current number of threads per pool
447 * buf: C string containing whitespace-
448 * separated unsigned integer values
449 * representing the number of NFSD
450 * threads to start in each pool
451 * size: non-zero length of C string in @buf
453 * On success: passed-in buffer filled with '\n'-terminated C
454 * string containing integer values representing the
455 * number of NFSD threads in each pool;
456 * return code is the size in bytes of the string
457 * On error: return code is zero or a negative errno value
459 static ssize_t
write_pool_threads(struct file
*file
, char *buf
, size_t size
)
461 /* if size > 0, look for an array of number of threads per node
462 * and apply them then write out number of threads per node as reply
470 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
472 mutex_lock(&nfsd_mutex
);
473 npools
= nfsd_nrpools(net
);
476 * NFS is shut down. The admin can start it by
477 * writing to the threads file but NOT the pool_threads
478 * file, sorry. Report zero threads.
480 mutex_unlock(&nfsd_mutex
);
485 nthreads
= kcalloc(npools
, sizeof(int), GFP_KERNEL
);
487 if (nthreads
== NULL
)
491 for (i
= 0; i
< npools
; i
++) {
492 rv
= get_int(&mesg
, &nthreads
[i
]);
494 break; /* fewer numbers than pools */
496 goto out_free
; /* syntax error */
501 rv
= nfsd_set_nrthreads(i
, nthreads
, net
);
506 rv
= nfsd_get_nrthreads(npools
, nthreads
, net
);
511 size
= SIMPLE_TRANSACTION_LIMIT
;
512 for (i
= 0; i
< npools
&& size
> 0; i
++) {
513 snprintf(mesg
, size
, "%d%c", nthreads
[i
], (i
== npools
-1 ? '\n' : ' '));
521 mutex_unlock(&nfsd_mutex
);
525 static ssize_t
__write_versions(struct file
*file
, char *buf
, size_t size
)
528 char *vers
, *minorp
, sign
;
529 int len
, num
, remaining
;
533 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
534 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
538 /* Cannot change versions without updating
539 * nn->nfsd_serv->sv_xdrsize, and reallocing
540 * rq_argp and rq_resp
543 if (buf
[size
-1] != '\n')
548 len
= qword_get(&mesg
, vers
, size
);
549 if (len
<= 0) return -EINVAL
;
552 if (sign
== '+' || sign
== '-')
553 num
= simple_strtol((vers
+1), &minorp
, 0);
555 num
= simple_strtol(vers
, &minorp
, 0);
556 if (*minorp
== '.') {
559 minor
= simple_strtoul(minorp
+1, NULL
, 0);
562 if (nfsd_minorversion(minor
, sign
== '-' ?
563 NFSD_CLEAR
: NFSD_SET
) < 0)
571 nfsd_vers(num
, sign
== '-' ? NFSD_CLEAR
: NFSD_SET
);
578 } while ((len
= qword_get(&mesg
, vers
, size
)) > 0);
579 /* If all get turned off, turn them back on, as
580 * having no versions is BAD
582 nfsd_reset_versions();
585 /* Now write current state into reply buffer */
588 remaining
= SIMPLE_TRANSACTION_LIMIT
;
589 for (num
=2 ; num
<= 4 ; num
++)
590 if (nfsd_vers(num
, NFSD_AVAIL
)) {
591 len
= snprintf(buf
, remaining
, "%s%c%d", sep
,
592 nfsd_vers(num
, NFSD_TEST
)?'+':'-',
602 if (nfsd_vers(4, NFSD_AVAIL
))
603 for (minor
= 1; minor
<= NFSD_SUPPORTED_MINOR_VERSION
;
605 len
= snprintf(buf
, remaining
, " %c4.%u",
606 (nfsd_vers(4, NFSD_TEST
) &&
607 nfsd_minorversion(minor
, NFSD_TEST
)) ?
618 len
= snprintf(buf
, remaining
, "\n");
625 * write_versions - Set or report the available NFS protocol versions
631 * On success: passed-in buffer filled with '\n'-terminated C
632 * string containing positive or negative integer
633 * values representing the current status of each
635 * return code is the size in bytes of the string
636 * On error: return code is zero or a negative errno value
641 * buf: C string containing whitespace-
642 * separated positive or negative
643 * integer values representing NFS
644 * protocol versions to enable ("+n")
646 * size: non-zero length of C string in @buf
648 * On success: status of zero or more protocol versions has
649 * been updated; passed-in buffer filled with
650 * '\n'-terminated C string containing positive
651 * or negative integer values representing the
652 * current status of each protocol version;
653 * return code is the size in bytes of the string
654 * On error: return code is zero or a negative errno value
656 static ssize_t
write_versions(struct file
*file
, char *buf
, size_t size
)
660 mutex_lock(&nfsd_mutex
);
661 rv
= __write_versions(file
, buf
, size
);
662 mutex_unlock(&nfsd_mutex
);
667 * Zero-length write. Return a list of NFSD's current listener
670 static ssize_t
__write_ports_names(char *buf
, struct net
*net
)
672 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
674 if (nn
->nfsd_serv
== NULL
)
676 return svc_xprt_names(nn
->nfsd_serv
, buf
, SIMPLE_TRANSACTION_LIMIT
);
680 * A single 'fd' number was written, in which case it must be for
681 * a socket of a supported family/protocol, and we use it as an
684 static ssize_t
__write_ports_addfd(char *buf
, struct net
*net
)
688 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
690 err
= get_int(&mesg
, &fd
);
691 if (err
!= 0 || fd
< 0)
694 err
= nfsd_create_serv(net
);
698 err
= svc_addsock(nn
->nfsd_serv
, fd
, buf
, SIMPLE_TRANSACTION_LIMIT
);
704 /* Decrease the count, but don't shut down the service */
705 nn
->nfsd_serv
->sv_nrthreads
--;
710 * A transport listener is added by writing it's transport name and
713 static ssize_t
__write_ports_addxprt(char *buf
, struct net
*net
)
716 struct svc_xprt
*xprt
;
718 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
720 if (sscanf(buf
, "%15s %5u", transport
, &port
) != 2)
723 if (port
< 1 || port
> USHRT_MAX
)
726 err
= nfsd_create_serv(net
);
730 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
731 PF_INET
, port
, SVC_SOCK_ANONYMOUS
);
735 err
= svc_create_xprt(nn
->nfsd_serv
, transport
, net
,
736 PF_INET6
, port
, SVC_SOCK_ANONYMOUS
);
737 if (err
< 0 && err
!= -EAFNOSUPPORT
)
740 /* Decrease the count, but don't shut down the service */
741 nn
->nfsd_serv
->sv_nrthreads
--;
744 xprt
= svc_find_xprt(nn
->nfsd_serv
, transport
, net
, PF_INET
, port
);
746 svc_close_xprt(xprt
);
754 static ssize_t
__write_ports(struct file
*file
, char *buf
, size_t size
,
758 return __write_ports_names(buf
, net
);
761 return __write_ports_addfd(buf
, net
);
764 return __write_ports_addxprt(buf
, net
);
770 * write_ports - Pass a socket file descriptor or transport name to listen on
776 * On success: passed-in buffer filled with a '\n'-terminated C
777 * string containing a whitespace-separated list of
778 * named NFSD listeners;
779 * return code is the size in bytes of the string
780 * On error: return code is zero or a negative errno value
785 * buf: C string containing an unsigned
786 * integer value representing a bound
787 * but unconnected socket that is to be
788 * used as an NFSD listener; listen(3)
789 * must be called for a SOCK_STREAM
790 * socket, otherwise it is ignored
791 * size: non-zero length of C string in @buf
793 * On success: NFS service is started;
794 * passed-in buffer filled with a '\n'-terminated C
795 * string containing a unique alphanumeric name of
797 * return code is the size in bytes of the string
798 * On error: return code is a negative errno value
803 * buf: C string containing a transport
804 * name and an unsigned integer value
805 * representing the port to listen on,
806 * separated by whitespace
807 * size: non-zero length of C string in @buf
809 * On success: returns zero; NFS service is started
810 * On error: return code is a negative errno value
812 static ssize_t
write_ports(struct file
*file
, char *buf
, size_t size
)
815 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
817 mutex_lock(&nfsd_mutex
);
818 rv
= __write_ports(file
, buf
, size
, net
);
819 mutex_unlock(&nfsd_mutex
);
824 int nfsd_max_blksize
;
827 * write_maxblksize - Set or report the current NFS blksize
836 * buf: C string containing an unsigned
837 * integer value representing the new
839 * size: non-zero length of C string in @buf
841 * On success: passed-in buffer filled with '\n'-terminated C string
842 * containing numeric value of the current NFS blksize
844 * return code is the size in bytes of the string
845 * On error: return code is zero or a negative errno value
847 static ssize_t
write_maxblksize(struct file
*file
, char *buf
, size_t size
)
850 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
851 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
855 int rv
= get_int(&mesg
, &bsize
);
858 /* force bsize into allowed range and
859 * required alignment.
863 if (bsize
> NFSSVC_MAXBLKSIZE
)
864 bsize
= NFSSVC_MAXBLKSIZE
;
866 mutex_lock(&nfsd_mutex
);
868 mutex_unlock(&nfsd_mutex
);
871 nfsd_max_blksize
= bsize
;
872 mutex_unlock(&nfsd_mutex
);
875 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%d\n",
879 #ifdef CONFIG_NFSD_V4
880 static ssize_t
__nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
881 time_t *time
, struct nfsd_net
*nn
)
889 rv
= get_int(&mesg
, &i
);
893 * Some sanity checking. We don't have a reason for
894 * these particular numbers, but problems with the
896 * - Too short: the briefest network outage may
897 * cause clients to lose all their locks. Also,
898 * the frequent polling may be wasteful.
899 * - Too long: do you really want reboot recovery
900 * to take more than an hour? Or to make other
901 * clients wait an hour before being able to
902 * revoke a dead client's locks?
904 if (i
< 10 || i
> 3600)
909 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%ld\n", *time
);
912 static ssize_t
nfsd4_write_time(struct file
*file
, char *buf
, size_t size
,
913 time_t *time
, struct nfsd_net
*nn
)
917 mutex_lock(&nfsd_mutex
);
918 rv
= __nfsd4_write_time(file
, buf
, size
, time
, nn
);
919 mutex_unlock(&nfsd_mutex
);
924 * write_leasetime - Set or report the current NFSv4 lease time
933 * buf: C string containing an unsigned
934 * integer value representing the new
935 * NFSv4 lease expiry time
936 * size: non-zero length of C string in @buf
938 * On success: passed-in buffer filled with '\n'-terminated C
939 * string containing unsigned integer value of the
940 * current lease expiry time;
941 * return code is the size in bytes of the string
942 * On error: return code is zero or a negative errno value
944 static ssize_t
write_leasetime(struct file
*file
, char *buf
, size_t size
)
946 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
947 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
948 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_lease
, nn
);
952 * write_gracetime - Set or report current NFSv4 grace period time
954 * As above, but sets the time of the NFSv4 grace period.
956 * Note this should never be set to less than the *previous*
957 * lease-period time, but we don't try to enforce this. (In the common
958 * case (a new boot), we don't know what the previous lease time was
961 static ssize_t
write_gracetime(struct file
*file
, char *buf
, size_t size
)
963 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
964 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
965 return nfsd4_write_time(file
, buf
, size
, &nn
->nfsd4_grace
, nn
);
968 static ssize_t
__write_recoverydir(struct file
*file
, char *buf
, size_t size
,
978 if (size
> PATH_MAX
|| buf
[size
-1] != '\n')
983 len
= qword_get(&mesg
, recdir
, size
);
987 status
= nfs4_reset_recoverydir(recdir
);
992 return scnprintf(buf
, SIMPLE_TRANSACTION_LIMIT
, "%s\n",
997 * write_recoverydir - Set or report the pathname of the recovery directory
1006 * buf: C string containing the pathname
1007 * of the directory on a local file
1008 * system containing permanent NFSv4
1010 * size: non-zero length of C string in @buf
1012 * On success: passed-in buffer filled with '\n'-terminated C string
1013 * containing the current recovery pathname setting;
1014 * return code is the size in bytes of the string
1015 * On error: return code is zero or a negative errno value
1017 static ssize_t
write_recoverydir(struct file
*file
, char *buf
, size_t size
)
1020 struct net
*net
= file
->f_dentry
->d_sb
->s_fs_info
;
1021 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
1023 mutex_lock(&nfsd_mutex
);
1024 rv
= __write_recoverydir(file
, buf
, size
, nn
);
1025 mutex_unlock(&nfsd_mutex
);
1031 /*----------------------------------------------------------------------------*/
1033 * populating the filesystem.
1036 static int nfsd_fill_super(struct super_block
* sb
, void * data
, int silent
)
1038 static struct tree_descr nfsd_files
[] = {
1039 [NFSD_List
] = {"exports", &exports_nfsd_operations
, S_IRUGO
},
1040 [NFSD_Export_features
] = {"export_features",
1041 &export_features_operations
, S_IRUGO
},
1042 [NFSD_FO_UnlockIP
] = {"unlock_ip",
1043 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1044 [NFSD_FO_UnlockFS
] = {"unlock_filesystem",
1045 &transaction_ops
, S_IWUSR
|S_IRUSR
},
1046 [NFSD_Fh
] = {"filehandle", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1047 [NFSD_Threads
] = {"threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1048 [NFSD_Pool_Threads
] = {"pool_threads", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1049 [NFSD_Pool_Stats
] = {"pool_stats", &pool_stats_operations
, S_IRUGO
},
1050 [NFSD_Versions
] = {"versions", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1051 [NFSD_Ports
] = {"portlist", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1052 [NFSD_MaxBlkSize
] = {"max_block_size", &transaction_ops
, S_IWUSR
|S_IRUGO
},
1053 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1054 [NFSD_SupportedEnctypes
] = {"supported_krb5_enctypes", &supported_enctypes_ops
, S_IRUGO
},
1055 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1056 #ifdef CONFIG_NFSD_V4
1057 [NFSD_Leasetime
] = {"nfsv4leasetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1058 [NFSD_Gracetime
] = {"nfsv4gracetime", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1059 [NFSD_RecoveryDir
] = {"nfsv4recoverydir", &transaction_ops
, S_IWUSR
|S_IRUSR
},
1063 struct net
*net
= data
;
1066 ret
= simple_fill_super(sb
, 0x6e667364, nfsd_files
);
1069 sb
->s_fs_info
= get_net(net
);
1073 static struct dentry
*nfsd_mount(struct file_system_type
*fs_type
,
1074 int flags
, const char *dev_name
, void *data
)
1076 return mount_ns(fs_type
, flags
, current
->nsproxy
->net_ns
, nfsd_fill_super
);
1079 static void nfsd_umount(struct super_block
*sb
)
1081 struct net
*net
= sb
->s_fs_info
;
1083 kill_litter_super(sb
);
1087 static struct file_system_type nfsd_fs_type
= {
1088 .owner
= THIS_MODULE
,
1090 .mount
= nfsd_mount
,
1091 .kill_sb
= nfsd_umount
,
1093 MODULE_ALIAS_FS("nfsd");
1095 #ifdef CONFIG_PROC_FS
1096 static int create_proc_exports_entry(void)
1098 struct proc_dir_entry
*entry
;
1100 entry
= proc_mkdir("fs/nfs", NULL
);
1103 entry
= proc_create("exports", 0, entry
,
1104 &exports_proc_operations
);
1109 #else /* CONFIG_PROC_FS */
1110 static int create_proc_exports_entry(void)
1118 static __net_init
int nfsd_init_net(struct net
*net
)
1121 struct nfsd_net
*nn
= net_generic(net
, nfsd_net_id
);
1123 retval
= nfsd_export_init(net
);
1125 goto out_export_error
;
1126 retval
= nfsd_idmap_init(net
);
1128 goto out_idmap_error
;
1129 nn
->nfsd4_lease
= 90; /* default lease time */
1130 nn
->nfsd4_grace
= 90;
1134 nfsd_export_shutdown(net
);
1139 static __net_exit
void nfsd_exit_net(struct net
*net
)
1141 nfsd_idmap_shutdown(net
);
1142 nfsd_export_shutdown(net
);
1145 static struct pernet_operations nfsd_net_ops
= {
1146 .init
= nfsd_init_net
,
1147 .exit
= nfsd_exit_net
,
1149 .size
= sizeof(struct nfsd_net
),
1152 static int __init
init_nfsd(void)
1155 printk(KERN_INFO
"Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1157 retval
= register_cld_notifier();
1160 retval
= register_pernet_subsys(&nfsd_net_ops
);
1162 goto out_unregister_notifier
;
1163 retval
= nfsd4_init_slabs();
1165 goto out_unregister_pernet
;
1167 retval
= nfsd_fault_inject_init(); /* nfsd fault injection controls */
1169 goto out_free_slabs
;
1170 nfsd_stat_init(); /* Statistics */
1171 retval
= nfsd_reply_cache_init();
1174 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1175 retval
= create_proc_exports_entry();
1177 goto out_free_lockd
;
1178 retval
= register_filesystem(&nfsd_fs_type
);
1183 remove_proc_entry("fs/nfs/exports", NULL
);
1184 remove_proc_entry("fs/nfs", NULL
);
1186 nfsd_lockd_shutdown();
1187 nfsd_reply_cache_shutdown();
1189 nfsd_stat_shutdown();
1190 nfsd_fault_inject_cleanup();
1193 out_unregister_pernet
:
1194 unregister_pernet_subsys(&nfsd_net_ops
);
1195 out_unregister_notifier
:
1196 unregister_cld_notifier();
1200 static void __exit
exit_nfsd(void)
1202 nfsd_reply_cache_shutdown();
1203 remove_proc_entry("fs/nfs/exports", NULL
);
1204 remove_proc_entry("fs/nfs", NULL
);
1205 nfsd_stat_shutdown();
1206 nfsd_lockd_shutdown();
1208 nfsd_fault_inject_cleanup();
1209 unregister_filesystem(&nfsd_fs_type
);
1210 unregister_pernet_subsys(&nfsd_net_ops
);
1211 unregister_cld_notifier();
1214 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1215 MODULE_LICENSE("GPL");
1216 module_init(init_nfsd
)
1217 module_exit(exit_nfsd
)