[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"

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;

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	= CTL_UNNUMBERED,
		.procname	= "nfs_congestion_kb",
		.data		= &nfs_congestion_kb,
		.maxlen		= sizeof(nfs_congestion_kb),
		.mode		= 0644,
		.proc_handler	= &proc_dointvec,
	},
	{ .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);
	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
	18	static const int nfs_set_port_min = 0;
	19	static const int nfs_set_port_max = 65535;
	20	static struct ctl_table_header *nfs_callback_sysctl_table;
a72b4422 TM	21
	22	static ctl_table nfs_cb_sysctls[] = {
	23	#ifdef CONFIG_NFS_V4
	24	{
	25	.ctl_name = CTL_UNNUMBERED,
	26	.procname = "nfs_callback_tcpport",
	27	.data = &nfs_callback_set_tcpport,
	28	.maxlen = sizeof(int),
	29	.mode = 0644,
	30	.proc_handler = &proc_dointvec_minmax,
	31	.extra1 = (int *)&nfs_set_port_min,
	32	.extra2 = (int *)&nfs_set_port_max,
	33	},
58df095b TM	34	{
	35	.ctl_name = CTL_UNNUMBERED,
	36	.procname = "idmap_cache_timeout",
	37	.data = &nfs_idmap_cache_timeout,
	38	.maxlen = sizeof(int),
	39	.mode = 0644,
	40	.proc_handler = &proc_dointvec_jiffies,
	41	.strategy = &sysctl_jiffies,
	42	},
a72b4422	43	#endif
51d8fa6a TM	44	{
	45	.ctl_name = CTL_UNNUMBERED,
	46	.procname = "nfs_mountpoint_timeout",
	47	.data = &nfs_mountpoint_expiry_timeout,
	48	.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
	49	.mode = 0644,
	50	.proc_handler = &proc_dointvec_jiffies,
	51	.strategy = &sysctl_jiffies,
	52	},
89a09141 PZ	53	{
	54	.ctl_name = CTL_UNNUMBERED,
	55	.procname = "nfs_congestion_kb",
	56	.data = &nfs_congestion_kb,
	57	.maxlen = sizeof(nfs_congestion_kb),
	58	.mode = 0644,
	59	.proc_handler = &proc_dointvec,
	60	},
a72b4422 TM	61	{ .ctl_name = 0 }
	62	};
	63
	64	static ctl_table nfs_cb_sysctl_dir[] = {
	65	{
	66	.ctl_name = CTL_UNNUMBERED,
	67	.procname = "nfs",
	68	.mode = 0555,
	69	.child = nfs_cb_sysctls,
	70	},
	71	{ .ctl_name = 0 }
	72	};
	73
	74	static ctl_table nfs_cb_sysctl_root[] = {
	75	{
	76	.ctl_name = CTL_FS,
	77	.procname = "fs",
	78	.mode = 0555,
	79	.child = nfs_cb_sysctl_dir,
	80	},
	81	{ .ctl_name = 0 }
	82	};
	83
	84	int nfs_register_sysctl(void)
	85	{
0b4d4147	86	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
a72b4422 TM	87	if (nfs_callback_sysctl_table == NULL)
	88	return -ENOMEM;
	89	return 0;
	90	}
	91
	92	void nfs_unregister_sysctl(void)
	93	{
	94	unregister_sysctl_table(nfs_callback_sysctl_table);
	95	nfs_callback_sysctl_table = NULL;
	96	}