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

/*
 * 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 "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 = 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;
}
Commit	Line	Data
a72b4422 TM	1	/*
	2	* linux/fs/nfs/sysctl.c
	3	*
	4	* Sysctl interface to NFS parameters
	5	*/
	6	#include <linux/config.h>
	7	#include <linux/types.h>
	8	#include <linux/linkage.h>
	9	#include <linux/ctype.h>
	10	#include <linux/fs.h>
	11	#include <linux/sysctl.h>
	12	#include <linux/module.h>
	13	#include <linux/nfs4.h>
58df095b	14	#include <linux/nfs_idmap.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;
	21	/*
	22	* Something that isn't CTL_ANY, CTL_NONE or a value that may clash.
	23	* Use the same values as fs/lockd/svc.c
	24	*/
	25	#define CTL_UNNUMBERED -2
	26
	27	static ctl_table nfs_cb_sysctls[] = {
	28	#ifdef CONFIG_NFS_V4
	29	{
	30	.ctl_name = CTL_UNNUMBERED,
	31	.procname = "nfs_callback_tcpport",
	32	.data = &nfs_callback_set_tcpport,
	33	.maxlen = sizeof(int),
	34	.mode = 0644,
	35	.proc_handler = &proc_dointvec_minmax,
	36	.extra1 = (int *)&nfs_set_port_min,
	37	.extra2 = (int *)&nfs_set_port_max,
	38	},
58df095b TM	39	{
	40	.ctl_name = CTL_UNNUMBERED,
	41	.procname = "idmap_cache_timeout",
	42	.data = &nfs_idmap_cache_timeout,
	43	.maxlen = sizeof(int),
	44	.mode = 0644,
	45	.proc_handler = &proc_dointvec_jiffies,
	46	.strategy = &sysctl_jiffies,
	47	},
a72b4422 TM	48	#endif
	49	{ .ctl_name = 0 }
	50	};
	51
	52	static ctl_table nfs_cb_sysctl_dir[] = {
	53	{
	54	.ctl_name = CTL_UNNUMBERED,
	55	.procname = "nfs",
	56	.mode = 0555,
	57	.child = nfs_cb_sysctls,
	58	},
	59	{ .ctl_name = 0 }
	60	};
	61
	62	static ctl_table nfs_cb_sysctl_root[] = {
	63	{
	64	.ctl_name = CTL_FS,
	65	.procname = "fs",
	66	.mode = 0555,
	67	.child = nfs_cb_sysctl_dir,
	68	},
	69	{ .ctl_name = 0 }
	70	};
	71
	72	int nfs_register_sysctl(void)
	73	{
	74	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
	75	if (nfs_callback_sysctl_table == NULL)
	76	return -ENOMEM;
	77	return 0;
	78	}
	79
	80	void nfs_unregister_sysctl(void)
	81	{
	82	unregister_sysctl_table(nfs_callback_sysctl_table);
	83	nfs_callback_sysctl_table = NULL;
	84	}