2 * linux/fs/nfs/nfs4sysctl.c
4 * Sysctl interface to NFS v4 parameters
6 * Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com>
8 #include <linux/sysctl.h>
9 #include <linux/nfs_idmap.h>
10 #include <linux/nfs_fs.h>
15 static const int nfs_set_port_min = 0;
16 static const int nfs_set_port_max = 65535;
17 static struct ctl_table_header *nfs4_callback_sysctl_table;
19 static ctl_table nfs4_cb_sysctls[] = {
21 .procname = "nfs_callback_tcpport",
22 .data = &nfs_callback_set_tcpport,
23 .maxlen = sizeof(int),
25 .proc_handler = proc_dointvec_minmax,
26 .extra1 = (int *)&nfs_set_port_min,
27 .extra2 = (int *)&nfs_set_port_max,
30 .procname = "idmap_cache_timeout",
31 .data = &nfs_idmap_cache_timeout,
32 .maxlen = sizeof(int),
34 .proc_handler = proc_dointvec_jiffies,
39 static ctl_table nfs4_cb_sysctl_dir[] = {
43 .child = nfs4_cb_sysctls,
48 static ctl_table nfs4_cb_sysctl_root[] = {
52 .child = nfs4_cb_sysctl_dir,
57 int nfs4_register_sysctl(void)
59 nfs4_callback_sysctl_table = register_sysctl_table(nfs4_cb_sysctl_root);
60 if (nfs4_callback_sysctl_table == NULL)
65 void nfs4_unregister_sysctl(void)
67 unregister_sysctl_table(nfs4_callback_sysctl_table);
68 nfs4_callback_sysctl_table = NULL;