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/clnt.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>
22 #include "fault_inject.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)
401 rv = get_int(&mesg, &newthreads);
406 rv = nfsd_svc(newthreads);
410 rv = nfsd_nrthreads();
412 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
416 * write_pool_threads - Set or report the current number of threads per pool
425 * buf: C string containing whitespace-
426 * separated unsigned integer values
427 * representing the number of NFSD
428 * threads to start in each pool
429 * size: non-zero length of C string in @buf
431 * On success: passed-in buffer filled with '\n'-terminated C
432 * string containing integer values representing the
433 * number of NFSD threads in each pool;
434 * return code is the size in bytes of the string
435 * On error: return code is zero or a negative errno value
437 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
439 /* if size > 0, look for an array of number of threads per node
440 * and apply them then write out number of threads per node as reply
449 mutex_lock(&nfsd_mutex);
450 npools = nfsd_nrpools();
453 * NFS is shut down. The admin can start it by
454 * writing to the threads file but NOT the pool_threads
455 * file, sorry. Report zero threads.
457 mutex_unlock(&nfsd_mutex);
462 nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
464 if (nthreads == NULL)
468 for (i = 0; i < npools; i++) {
469 rv = get_int(&mesg, &nthreads[i]);
471 break; /* fewer numbers than pools */
473 goto out_free; /* syntax error */
478 rv = nfsd_set_nrthreads(i, nthreads);
483 rv = nfsd_get_nrthreads(npools, nthreads);
488 size = SIMPLE_TRANSACTION_LIMIT;
489 for (i = 0; i < npools && size > 0; i++) {
490 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
498 mutex_unlock(&nfsd_mutex);
502 static ssize_t __write_versions(struct file *file, char *buf, size_t size)
505 char *vers, *minorp, sign;
506 int len, num, remaining;
513 /* Cannot change versions without updating
514 * nfsd_serv->sv_xdrsize, and reallocing
515 * rq_argp and rq_resp
518 if (buf[size-1] != '\n')
523 len = qword_get(&mesg, vers, size);
524 if (len <= 0) return -EINVAL;
527 if (sign == '+' || sign == '-')
528 num = simple_strtol((vers+1), &minorp, 0);
530 num = simple_strtol(vers, &minorp, 0);
531 if (*minorp == '.') {
534 minor = simple_strtoul(minorp+1, NULL, 0);
537 if (nfsd_minorversion(minor, sign == '-' ?
538 NFSD_CLEAR : NFSD_SET) < 0)
546 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
553 } while ((len = qword_get(&mesg, vers, size)) > 0);
554 /* If all get turned off, turn them back on, as
555 * having no versions is BAD
557 nfsd_reset_versions();
560 /* Now write current state into reply buffer */
563 remaining = SIMPLE_TRANSACTION_LIMIT;
564 for (num=2 ; num <= 4 ; num++)
565 if (nfsd_vers(num, NFSD_AVAIL)) {
566 len = snprintf(buf, remaining, "%s%c%d", sep,
567 nfsd_vers(num, NFSD_TEST)?'+':'-',
577 if (nfsd_vers(4, NFSD_AVAIL))
578 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
580 len = snprintf(buf, remaining, " %c4.%u",
581 (nfsd_vers(4, NFSD_TEST) &&
582 nfsd_minorversion(minor, NFSD_TEST)) ?
593 len = snprintf(buf, remaining, "\n");
600 * write_versions - Set or report the available NFS protocol versions
606 * On success: passed-in buffer filled with '\n'-terminated C
607 * string containing positive or negative integer
608 * values representing the current status of each
610 * return code is the size in bytes of the string
611 * On error: return code is zero or a negative errno value
616 * buf: C string containing whitespace-
617 * separated positive or negative
618 * integer values representing NFS
619 * protocol versions to enable ("+n")
621 * size: non-zero length of C string in @buf
623 * On success: status of zero or more protocol versions has
624 * been updated; passed-in buffer filled with
625 * '\n'-terminated C string containing positive
626 * or negative integer values representing the
627 * current status of each protocol version;
628 * return code is the size in bytes of the string
629 * On error: return code is zero or a negative errno value
631 static ssize_t write_versions(struct file *file, char *buf, size_t size)
635 mutex_lock(&nfsd_mutex);
636 rv = __write_versions(file, buf, size);
637 mutex_unlock(&nfsd_mutex);
642 * Zero-length write. Return a list of NFSD's current listener
645 static ssize_t __write_ports_names(char *buf)
647 if (nfsd_serv == NULL)
649 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
653 * A single 'fd' number was written, in which case it must be for
654 * a socket of a supported family/protocol, and we use it as an
657 static ssize_t __write_ports_addfd(char *buf)
661 struct net *net = &init_net;
663 err = get_int(&mesg, &fd);
664 if (err != 0 || fd < 0)
667 err = nfsd_create_serv();
671 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
677 /* Decrease the count, but don't shut down the service */
678 nfsd_serv->sv_nrthreads--;
683 * A transport listener is added by writing it's transport name and
686 static ssize_t __write_ports_addxprt(char *buf)
689 struct svc_xprt *xprt;
691 struct net *net = &init_net;
693 if (sscanf(buf, "%15s %5u", transport, &port) != 2)
696 if (port < 1 || port > USHRT_MAX)
699 err = nfsd_create_serv();
703 err = svc_create_xprt(nfsd_serv, transport, net,
704 PF_INET, port, SVC_SOCK_ANONYMOUS);
708 err = svc_create_xprt(nfsd_serv, transport, net,
709 PF_INET6, port, SVC_SOCK_ANONYMOUS);
710 if (err < 0 && err != -EAFNOSUPPORT)
713 /* Decrease the count, but don't shut down the service */
714 nfsd_serv->sv_nrthreads--;
717 xprt = svc_find_xprt(nfsd_serv, transport, net, PF_INET, port);
719 svc_close_xprt(xprt);
727 static ssize_t __write_ports(struct file *file, char *buf, size_t size)
730 return __write_ports_names(buf);
733 return __write_ports_addfd(buf);
736 return __write_ports_addxprt(buf);
742 * write_ports - Pass a socket file descriptor or transport name to listen on
748 * On success: passed-in buffer filled with a '\n'-terminated C
749 * string containing a whitespace-separated list of
750 * named NFSD listeners;
751 * return code is the size in bytes of the string
752 * On error: return code is zero or a negative errno value
757 * buf: C string containing an unsigned
758 * integer value representing a bound
759 * but unconnected socket that is to be
760 * used as an NFSD listener; listen(3)
761 * must be called for a SOCK_STREAM
762 * socket, otherwise it is ignored
763 * size: non-zero length of C string in @buf
765 * On success: NFS service is started;
766 * passed-in buffer filled with a '\n'-terminated C
767 * string containing a unique alphanumeric name of
769 * return code is the size in bytes of the string
770 * On error: return code is a negative errno value
775 * buf: C string containing a transport
776 * name and an unsigned integer value
777 * representing the port to listen on,
778 * separated by whitespace
779 * size: non-zero length of C string in @buf
781 * On success: returns zero; NFS service is started
782 * On error: return code is a negative errno value
784 static ssize_t write_ports(struct file *file, char *buf, size_t size)
788 mutex_lock(&nfsd_mutex);
789 rv = __write_ports(file, buf, size);
790 mutex_unlock(&nfsd_mutex);
795 int nfsd_max_blksize;
798 * write_maxblksize - Set or report the current NFS blksize
807 * buf: C string containing an unsigned
808 * integer value representing the new
810 * size: non-zero length of C string in @buf
812 * On success: passed-in buffer filled with '\n'-terminated C string
813 * containing numeric value of the current NFS blksize
815 * return code is the size in bytes of the string
816 * On error: return code is zero or a negative errno value
818 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
823 int rv = get_int(&mesg, &bsize);
826 /* force bsize into allowed range and
827 * required alignment.
831 if (bsize > NFSSVC_MAXBLKSIZE)
832 bsize = NFSSVC_MAXBLKSIZE;
834 mutex_lock(&nfsd_mutex);
836 mutex_unlock(&nfsd_mutex);
839 nfsd_max_blksize = bsize;
840 mutex_unlock(&nfsd_mutex);
843 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
847 #ifdef CONFIG_NFSD_V4
848 static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
856 rv = get_int(&mesg, &i);
860 * Some sanity checking. We don't have a reason for
861 * these particular numbers, but problems with the
863 * - Too short: the briefest network outage may
864 * cause clients to lose all their locks. Also,
865 * the frequent polling may be wasteful.
866 * - Too long: do you really want reboot recovery
867 * to take more than an hour? Or to make other
868 * clients wait an hour before being able to
869 * revoke a dead client's locks?
871 if (i < 10 || i > 3600)
876 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
879 static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
883 mutex_lock(&nfsd_mutex);
884 rv = __nfsd4_write_time(file, buf, size, time);
885 mutex_unlock(&nfsd_mutex);
890 * write_leasetime - Set or report the current NFSv4 lease time
899 * buf: C string containing an unsigned
900 * integer value representing the new
901 * NFSv4 lease expiry time
902 * size: non-zero length of C string in @buf
904 * On success: passed-in buffer filled with '\n'-terminated C
905 * string containing unsigned integer value of the
906 * current lease expiry time;
907 * return code is the size in bytes of the string
908 * On error: return code is zero or a negative errno value
910 static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
912 struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
913 return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease);
917 * write_gracetime - Set or report current NFSv4 grace period time
919 * As above, but sets the time of the NFSv4 grace period.
921 * Note this should never be set to less than the *previous*
922 * lease-period time, but we don't try to enforce this. (In the common
923 * case (a new boot), we don't know what the previous lease time was
926 static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
928 struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id);
929 return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace);
932 static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
941 if (size > PATH_MAX || buf[size-1] != '\n')
946 len = qword_get(&mesg, recdir, size);
950 status = nfs4_reset_recoverydir(recdir);
955 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
960 * write_recoverydir - Set or report the pathname of the recovery directory
969 * buf: C string containing the pathname
970 * of the directory on a local file
971 * system containing permanent NFSv4
973 * size: non-zero length of C string in @buf
975 * On success: passed-in buffer filled with '\n'-terminated C string
976 * containing the current recovery pathname setting;
977 * return code is the size in bytes of the string
978 * On error: return code is zero or a negative errno value
980 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
984 mutex_lock(&nfsd_mutex);
985 rv = __write_recoverydir(file, buf, size);
986 mutex_unlock(&nfsd_mutex);
992 /*----------------------------------------------------------------------------*/
994 * populating the filesystem.
997 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
999 static struct tree_descr nfsd_files[] = {
1000 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
1001 [NFSD_Export_features] = {"export_features",
1002 &export_features_operations, S_IRUGO},
1003 [NFSD_FO_UnlockIP] = {"unlock_ip",
1004 &transaction_ops, S_IWUSR|S_IRUSR},
1005 [NFSD_FO_UnlockFS] = {"unlock_filesystem",
1006 &transaction_ops, S_IWUSR|S_IRUSR},
1007 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1008 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
1009 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
1010 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
1011 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
1012 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
1013 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
1014 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1015 [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
1016 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1017 #ifdef CONFIG_NFSD_V4
1018 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
1019 [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
1020 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
1024 return simple_fill_super(sb, 0x6e667364, nfsd_files);
1027 static struct dentry *nfsd_mount(struct file_system_type *fs_type,
1028 int flags, const char *dev_name, void *data)
1030 return mount_single(fs_type, flags, data, nfsd_fill_super);
1033 static struct file_system_type nfsd_fs_type = {
1034 .owner = THIS_MODULE,
1036 .mount = nfsd_mount,
1037 .kill_sb = kill_litter_super,
1040 #ifdef CONFIG_PROC_FS
1041 static int create_proc_exports_entry(void)
1043 struct proc_dir_entry *entry;
1045 entry = proc_mkdir("fs/nfs", NULL);
1048 entry = proc_create("exports", 0, entry, &exports_operations);
1053 #else /* CONFIG_PROC_FS */
1054 static int create_proc_exports_entry(void)
1062 static __net_init int nfsd_init_net(struct net *net)
1065 struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1067 retval = nfsd_export_init(net);
1069 goto out_export_error;
1070 retval = nfsd_idmap_init(net);
1072 goto out_idmap_error;
1073 nn->nfsd4_lease = 90; /* default lease time */
1074 nn->nfsd4_grace = 90;
1078 nfsd_export_shutdown(net);
1083 static __net_exit void nfsd_exit_net(struct net *net)
1085 nfsd_idmap_shutdown(net);
1086 nfsd_export_shutdown(net);
1089 static struct pernet_operations nfsd_net_ops = {
1090 .init = nfsd_init_net,
1091 .exit = nfsd_exit_net,
1093 .size = sizeof(struct nfsd_net),
1096 static int __init init_nfsd(void)
1099 printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1101 retval = register_cld_notifier();
1104 retval = register_pernet_subsys(&nfsd_net_ops);
1106 goto out_unregister_notifier;
1107 retval = nfsd4_init_slabs();
1109 goto out_unregister_pernet;
1111 retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */
1113 goto out_free_slabs;
1114 nfsd_stat_init(); /* Statistics */
1115 retval = nfsd_reply_cache_init();
1118 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1119 retval = create_proc_exports_entry();
1121 goto out_free_lockd;
1122 retval = register_filesystem(&nfsd_fs_type);
1127 remove_proc_entry("fs/nfs/exports", NULL);
1128 remove_proc_entry("fs/nfs", NULL);
1130 nfsd_lockd_shutdown();
1131 nfsd_reply_cache_shutdown();
1133 nfsd_stat_shutdown();
1134 nfsd_fault_inject_cleanup();
1137 out_unregister_pernet:
1138 unregister_pernet_subsys(&nfsd_net_ops);
1139 out_unregister_notifier:
1140 unregister_cld_notifier();
1144 static void __exit exit_nfsd(void)
1146 nfsd_reply_cache_shutdown();
1147 remove_proc_entry("fs/nfs/exports", NULL);
1148 remove_proc_entry("fs/nfs", NULL);
1149 nfsd_stat_shutdown();
1150 nfsd_lockd_shutdown();
1152 nfsd_fault_inject_cleanup();
1153 unregister_filesystem(&nfsd_fs_type);
1154 unregister_pernet_subsys(&nfsd_net_ops);
1155 unregister_cld_notifier();
1158 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1159 MODULE_LICENSE("GPL");
1160 module_init(init_nfsd)
1161 module_exit(exit_nfsd)