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/*
* linux/fs/nfs/sysctl.c
*
* Sysctl interface to NFS parameters
*/
#include <linux/config.h>
#include <linux/types.h>
#include <linux/linkage.h>
#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/sysctl.h>
#include <linux/module.h>
#include <linux/nfs4.h>
#include <linux/nfs_idmap.h>
#include <linux/nfs_fs.h>
#include "callback.h"
static const int nfs_set_port_min = 0;
static const int nfs_set_port_max = 65535;
static struct ctl_table_header *nfs_callback_sysctl_table;
/*
* Something that isn't CTL_ANY, CTL_NONE or a value that may clash.
* Use the same values as fs/lockd/svc.c
*/
#define CTL_UNNUMBERED -2
static ctl_table nfs_cb_sysctls[] = {
#ifdef CONFIG_NFS_V4
{
.ctl_name = CTL_UNNUMBERED,
.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,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "idmap_cache_timeout",
.data = &nfs_idmap_cache_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
#endif
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nfs_mountpoint_timeout",
.data = &nfs_mountpoint_expiry_timeout,
.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
{ .ctl_name = 0 }
};
static ctl_table nfs_cb_sysctl_dir[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "nfs",
.mode = 0555,
.child = nfs_cb_sysctls,
},
{ .ctl_name = 0 }
};
static ctl_table nfs_cb_sysctl_root[] = {
{
.ctl_name = CTL_FS,
.procname = "fs",
.mode = 0555,
.child = nfs_cb_sysctl_dir,
},
{ .ctl_name = 0 }
};
int nfs_register_sysctl(void)
{
nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
if (nfs_callback_sysctl_table == NULL)
return -ENOMEM;
return 0;
}
void nfs_unregister_sysctl(void)
{
unregister_sysctl_table(nfs_callback_sysctl_table);
nfs_callback_sysctl_table = NULL;
}
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