[mirror_ubuntu-bionic-kernel.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 <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	*/
	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>
51d8fa6a	15	#include <linux/nfs_fs.h>
a72b4422 TM	16
	17	#include "callback.h"
	18
	19	static const int nfs_set_port_min = 0;
	20	static const int nfs_set_port_max = 65535;
	21	static struct ctl_table_header *nfs_callback_sysctl_table;
	22	/*
	23	* Something that isn't CTL_ANY, CTL_NONE or a value that may clash.
	24	* Use the same values as fs/lockd/svc.c
	25	*/
	26	#define CTL_UNNUMBERED -2
	27
	28	static ctl_table nfs_cb_sysctls[] = {
	29	#ifdef CONFIG_NFS_V4
	30	{
	31	.ctl_name = CTL_UNNUMBERED,
	32	.procname = "nfs_callback_tcpport",
	33	.data = &nfs_callback_set_tcpport,
	34	.maxlen = sizeof(int),
	35	.mode = 0644,
	36	.proc_handler = &proc_dointvec_minmax,
	37	.extra1 = (int *)&nfs_set_port_min,
	38	.extra2 = (int *)&nfs_set_port_max,
	39	},
58df095b TM	40	{
	41	.ctl_name = CTL_UNNUMBERED,
	42	.procname = "idmap_cache_timeout",
	43	.data = &nfs_idmap_cache_timeout,
	44	.maxlen = sizeof(int),
	45	.mode = 0644,
	46	.proc_handler = &proc_dointvec_jiffies,
	47	.strategy = &sysctl_jiffies,
	48	},
a72b4422	49	#endif
51d8fa6a TM	50	{
	51	.ctl_name = CTL_UNNUMBERED,
	52	.procname = "nfs_mountpoint_timeout",
	53	.data = &nfs_mountpoint_expiry_timeout,
	54	.maxlen = sizeof(nfs_mountpoint_expiry_timeout),
	55	.mode = 0644,
	56	.proc_handler = &proc_dointvec_jiffies,
	57	.strategy = &sysctl_jiffies,
	58	},
a72b4422 TM	59	{ .ctl_name = 0 }
	60	};
	61
	62	static ctl_table nfs_cb_sysctl_dir[] = {
	63	{
	64	.ctl_name = CTL_UNNUMBERED,
	65	.procname = "nfs",
	66	.mode = 0555,
	67	.child = nfs_cb_sysctls,
	68	},
	69	{ .ctl_name = 0 }
	70	};
	71
	72	static ctl_table nfs_cb_sysctl_root[] = {
	73	{
	74	.ctl_name = CTL_FS,
	75	.procname = "fs",
	76	.mode = 0555,
	77	.child = nfs_cb_sysctl_dir,
	78	},
	79	{ .ctl_name = 0 }
	80	};
	81
	82	int nfs_register_sysctl(void)
	83	{
	84	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
	85	if (nfs_callback_sysctl_table == NULL)
	86	return -ENOMEM;
	87	return 0;
	88	}
	89
	90	void nfs_unregister_sysctl(void)
	91	{
	92	unregister_sysctl_table(nfs_callback_sysctl_table);
	93	nfs_callback_sysctl_table = NULL;
	94	}