[linux.git] / fs / nfs / sysctl.c

/*
 * linux/fs/nfs/sysctl.c
 *
 * Sysctl interface to NFS parameters
 */
#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"

#ifdef CONFIG_NFS_V4
static const int nfs_set_port_min = 0;
static const int nfs_set_port_max = 65535;
#endif
static struct ctl_table_header *nfs_callback_sysctl_table;

static ctl_table nfs_cb_sysctls[] = {
#ifdef CONFIG_NFS_V4
	{
		.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,
	},
#ifndef CONFIG_NFS_USE_NEW_IDMAPPER
	{
		.procname = "idmap_cache_timeout",
		.data = &nfs_idmap_cache_timeout,
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = proc_dointvec_jiffies,
	},
#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
#endif
	{
		.procname	= "nfs_mountpoint_timeout",
		.data		= &nfs_mountpoint_expiry_timeout,
		.maxlen		= sizeof(nfs_mountpoint_expiry_timeout),
		.mode		= 0644,
		.proc_handler	= proc_dointvec_jiffies,
	},
	{
		.procname	= "nfs_congestion_kb",
		.data		= &nfs_congestion_kb,
		.maxlen		= sizeof(nfs_congestion_kb),
		.mode		= 0644,
		.proc_handler	= proc_dointvec,
	},
	{ }
};

static ctl_table nfs_cb_sysctl_dir[] = {
	{
		.procname = "nfs",
		.mode = 0555,
		.child = nfs_cb_sysctls,
	},
	{ }
};

static ctl_table nfs_cb_sysctl_root[] = {
	{
		.procname = "fs",
		.mode = 0555,
		.child = nfs_cb_sysctl_dir,
	},
	{ }
};

int nfs_register_sysctl(void)
{
	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
	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;
}
Commit	Line	Data
a72b4422 TM	1	/*
	2	* linux/fs/nfs/sysctl.c
	3	*
	4	* Sysctl interface to NFS parameters
	5	*/
a72b4422 TM	6	#include <linux/types.h>
	7	#include <linux/linkage.h>
	8	#include <linux/ctype.h>
	9	#include <linux/fs.h>
	10	#include <linux/sysctl.h>
	11	#include <linux/module.h>
	12	#include <linux/nfs4.h>
58df095b	13	#include <linux/nfs_idmap.h>
51d8fa6a	14	#include <linux/nfs_fs.h>
a72b4422 TM	15
	16	#include "callback.h"
	17
b0706ca4	18	#ifdef CONFIG_NFS_V4
a72b4422 TM	19	static const int nfs_set_port_min = 0;
a72b4422 TM	20	static const int nfs_set_port_max = 65535;
b0706ca4	21	#endif
a72b4422	22	static struct ctl_table_header *nfs_callback_sysctl_table;
a72b4422 TM	23
	24	static ctl_table nfs_cb_sysctls[] = {
	25	#ifdef CONFIG_NFS_V4
	26	{
a72b4422 TM	27	.procname = "nfs_callback_tcpport",
	28	.data = &nfs_callback_set_tcpport,
	29	.maxlen = sizeof(int),
	30	.mode = 0644,
6d456111	31	.proc_handler = proc_dointvec_minmax,
a72b4422 TM	32	.extra1 = (int *)&nfs_set_port_min,
	33	.extra2 = (int *)&nfs_set_port_max,
	34	},
955a857e	35	#ifndef CONFIG_NFS_USE_NEW_IDMAPPER
58df095b	36	{
58df095b TM	37	.procname = "idmap_cache_timeout",
	38	.data = &nfs_idmap_cache_timeout,
	39	.maxlen = sizeof(int),
	40	.mode = 0644,
6d456111	41	.proc_handler = proc_dointvec_jiffies,
58df095b	42	},
955a857e	43	#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
a72b4422	44	#endif
51d8fa6a	45	{
51d8fa6a TM	46	.procname = "nfs_mountpoint_timeout",
	47	.data = &nfs_mountpoint_expiry_timeout,
	48	.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
	49	.mode = 0644,
6d456111	50	.proc_handler = proc_dointvec_jiffies,
51d8fa6a	51	},
89a09141	52	{
89a09141 PZ	53	.procname = "nfs_congestion_kb",
	54	.data = &nfs_congestion_kb,
	55	.maxlen = sizeof(nfs_congestion_kb),
	56	.mode = 0644,
6d456111	57	.proc_handler = proc_dointvec,
89a09141	58	},
ab09203e	59	{ }
a72b4422 TM	60	};
	61
	62	static ctl_table nfs_cb_sysctl_dir[] = {
	63	{
a72b4422 TM	64	.procname = "nfs",
	65	.mode = 0555,
	66	.child = nfs_cb_sysctls,
	67	},
ab09203e	68	{ }
a72b4422 TM	69	};
	70
	71	static ctl_table nfs_cb_sysctl_root[] = {
	72	{
a72b4422 TM	73	.procname = "fs",
	74	.mode = 0555,
	75	.child = nfs_cb_sysctl_dir,
	76	},
ab09203e	77	{ }
a72b4422 TM	78	};
	79
	80	int nfs_register_sysctl(void)
	81	{
0b4d4147	82	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
a72b4422 TM	83	if (nfs_callback_sysctl_table == NULL)
	84	return -ENOMEM;
	85	return 0;
	86	}
	87
	88	void nfs_unregister_sysctl(void)
	89	{
	90	unregister_sysctl_table(nfs_callback_sysctl_table);
	91	nfs_callback_sysctl_table = NULL;
	92	}