[deliverable/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;
/*
 * 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;
}
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;
	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	48	#endif
51d8fa6a TM	49	{
	50	.ctl_name = CTL_UNNUMBERED,
	51	.procname = "nfs_mountpoint_timeout",
	52	.data = &nfs_mountpoint_expiry_timeout,
	53	.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
	54	.mode = 0644,
	55	.proc_handler = &proc_dointvec_jiffies,
	56	.strategy = &sysctl_jiffies,
	57	},
a72b4422 TM	58	{ .ctl_name = 0 }
	59	};
	60
	61	static ctl_table nfs_cb_sysctl_dir[] = {
	62	{
	63	.ctl_name = CTL_UNNUMBERED,
	64	.procname = "nfs",
	65	.mode = 0555,
	66	.child = nfs_cb_sysctls,
	67	},
	68	{ .ctl_name = 0 }
	69	};
	70
	71	static ctl_table nfs_cb_sysctl_root[] = {
	72	{
	73	.ctl_name = CTL_FS,
	74	.procname = "fs",
	75	.mode = 0555,
	76	.child = nfs_cb_sysctl_dir,
	77	},
	78	{ .ctl_name = 0 }
	79	};
	80
	81	int nfs_register_sysctl(void)
	82	{
	83	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
	84	if (nfs_callback_sysctl_table == NULL)
	85	return -ENOMEM;
	86	return 0;
	87	}
	88
	89	void nfs_unregister_sysctl(void)
	90	{
	91	unregister_sysctl_table(nfs_callback_sysctl_table);
	92	nfs_callback_sysctl_table = NULL;
	93	}