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// SPDX-License-Identifier: GPL-2.0
/*
* linux/fs/nfs/nfs4sysctl.c
*
* Sysctl interface to NFS v4 parameters
*
* Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com>
*/
#include <linux/sysctl.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
#include "nfs4idmap.h"
#include "callback.h"
static const int nfs_set_port_min;
static const int nfs_set_port_max = 65535;
static struct ctl_table_header *nfs4_callback_sysctl_table;
static struct ctl_table nfs4_cb_sysctls[] = {
{
.procname = "nfs_callback_tcpport",
.data = &nfs_callback_set_tcpport,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = (int *)&nfs_set_port_min,
.extra2 = (int *)&nfs_set_port_max,
},
{
.procname = "idmap_cache_timeout",
.data = &nfs_idmap_cache_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{ }
};
static struct ctl_table nfs4_cb_sysctl_dir[] = {
{
.procname = "nfs",
.mode = 0555,
.child = nfs4_cb_sysctls,
},
{ }
};
static struct ctl_table nfs4_cb_sysctl_root[] = {
{
.procname = "fs",
.mode = 0555,
.child = nfs4_cb_sysctl_dir,
},
{ }
};
int nfs4_register_sysctl(void)
{
nfs4_callback_sysctl_table = register_sysctl_table(nfs4_cb_sysctl_root);
if (nfs4_callback_sysctl_table == NULL)
return -ENOMEM;
return 0;
}
void nfs4_unregister_sysctl(void)
{
unregister_sysctl_table(nfs4_callback_sysctl_table);
nfs4_callback_sysctl_table = NULL;
}
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