[linux-2.6-block.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,
	},
	{
		.procname = "idmap_cache_timeout",
		.data = &nfs_idmap_cache_timeout,
		.maxlen = sizeof(int),
		.mode = 0644,
		.proc_handler = proc_dointvec_jiffies,
	},
#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	},
58df095b	35	{
58df095b TM	36	.procname = "idmap_cache_timeout",
	37	.data = &nfs_idmap_cache_timeout,
	38	.maxlen = sizeof(int),
	39	.mode = 0644,
6d456111	40	.proc_handler = proc_dointvec_jiffies,
58df095b	41	},
a72b4422	42	#endif
51d8fa6a	43	{
51d8fa6a TM	44	.procname = "nfs_mountpoint_timeout",
	45	.data = &nfs_mountpoint_expiry_timeout,
	46	.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
	47	.mode = 0644,
6d456111	48	.proc_handler = proc_dointvec_jiffies,
51d8fa6a	49	},
89a09141	50	{
89a09141 PZ	51	.procname = "nfs_congestion_kb",
	52	.data = &nfs_congestion_kb,
	53	.maxlen = sizeof(nfs_congestion_kb),
	54	.mode = 0644,
6d456111	55	.proc_handler = proc_dointvec,
89a09141	56	},
ab09203e	57	{ }
a72b4422 TM	58	};
	59
	60	static ctl_table nfs_cb_sysctl_dir[] = {
	61	{
a72b4422 TM	62	.procname = "nfs",
	63	.mode = 0555,
	64	.child = nfs_cb_sysctls,
	65	},
ab09203e	66	{ }
a72b4422 TM	67	};
	68
	69	static ctl_table nfs_cb_sysctl_root[] = {
	70	{
a72b4422 TM	71	.procname = "fs",
	72	.mode = 0555,
	73	.child = nfs_cb_sysctl_dir,
	74	},
ab09203e	75	{ }
a72b4422 TM	76	};
	77
	78	int nfs_register_sysctl(void)
	79	{
0b4d4147	80	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
a72b4422 TM	81	if (nfs_callback_sysctl_table == NULL)
	82	return -ENOMEM;
	83	return 0;
	84	}
	85
	86	void nfs_unregister_sysctl(void)
	87	{
	88	unregister_sysctl_table(nfs_callback_sysctl_table);
	89	nfs_callback_sysctl_table = NULL;
	90	}