1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * linux/fs/nfs/sysctl.c
 4 *
 5 * Sysctl interface to NFS parameters
 6 */
 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/nfs_fs.h>
14
 
 
 
 
 
 
15static struct ctl_table_header *nfs_callback_sysctl_table;
16
17static struct ctl_table nfs_cb_sysctls[] = {
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18	{
19		.procname	= "nfs_mountpoint_timeout",
20		.data		= &nfs_mountpoint_expiry_timeout,
21		.maxlen		= sizeof(nfs_mountpoint_expiry_timeout),
22		.mode		= 0644,
23		.proc_handler	= proc_dointvec_jiffies,
24	},
25	{
26		.procname	= "nfs_congestion_kb",
27		.data		= &nfs_congestion_kb,
28		.maxlen		= sizeof(nfs_congestion_kb),
29		.mode		= 0644,
30		.proc_handler	= proc_dointvec,
31	},
32	{ }
33};
34
35static struct ctl_table nfs_cb_sysctl_dir[] = {
36	{
37		.procname = "nfs",
38		.mode = 0555,
39		.child = nfs_cb_sysctls,
40	},
41	{ }
42};
43
44static struct ctl_table nfs_cb_sysctl_root[] = {
45	{
46		.procname = "fs",
47		.mode = 0555,
48		.child = nfs_cb_sysctl_dir,
49	},
50	{ }
51};
52
53int nfs_register_sysctl(void)
54{
55	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
56	if (nfs_callback_sysctl_table == NULL)
57		return -ENOMEM;
58	return 0;
59}
60
61void nfs_unregister_sysctl(void)
62{
63	unregister_sysctl_table(nfs_callback_sysctl_table);
64	nfs_callback_sysctl_table = NULL;
65}

 
 1/*
 2 * linux/fs/nfs/sysctl.c
 3 *
 4 * Sysctl interface to NFS parameters
 5 */
 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>
13#include <linux/nfs_idmap.h>
14#include <linux/nfs_fs.h>
15
16#include "callback.h"
17
18#ifdef CONFIG_NFS_V4
19static const int nfs_set_port_min = 0;
20static const int nfs_set_port_max = 65535;
21#endif
22static struct ctl_table_header *nfs_callback_sysctl_table;
23
24static ctl_table nfs_cb_sysctls[] = {
25#ifdef CONFIG_NFS_V4
26	{
27		.procname = "nfs_callback_tcpport",
28		.data = &nfs_callback_set_tcpport,
29		.maxlen = sizeof(int),
30		.mode = 0644,
31		.proc_handler = proc_dointvec_minmax,
32		.extra1 = (int *)&nfs_set_port_min,
33		.extra2 = (int *)&nfs_set_port_max,
34	},
35#ifndef CONFIG_NFS_USE_NEW_IDMAPPER
36	{
37		.procname = "idmap_cache_timeout",
38		.data = &nfs_idmap_cache_timeout,
39		.maxlen = sizeof(int),
40		.mode = 0644,
41		.proc_handler = proc_dointvec_jiffies,
42	},
43#endif /* CONFIG_NFS_USE_NEW_IDMAPPER */
44#endif
45	{
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	},
52	{
53		.procname	= "nfs_congestion_kb",
54		.data		= &nfs_congestion_kb,
55		.maxlen		= sizeof(nfs_congestion_kb),
56		.mode		= 0644,
57		.proc_handler	= proc_dointvec,
58	},
59	{ }
60};
61
62static ctl_table nfs_cb_sysctl_dir[] = {
63	{
64		.procname = "nfs",
65		.mode = 0555,
66		.child = nfs_cb_sysctls,
67	},
68	{ }
69};
70
71static ctl_table nfs_cb_sysctl_root[] = {
72	{
73		.procname = "fs",
74		.mode = 0555,
75		.child = nfs_cb_sysctl_dir,
76	},
77	{ }
78};
79
80int nfs_register_sysctl(void)
81{
82	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
83	if (nfs_callback_sysctl_table == NULL)
84		return -ENOMEM;
85	return 0;
86}
87
88void nfs_unregister_sysctl(void)
89{
90	unregister_sysctl_table(nfs_callback_sysctl_table);
91	nfs_callback_sysctl_table = NULL;
92}