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	{
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	},
42#endif
43	{
44		.procname	= "nfs_mountpoint_timeout",
45		.data		= &nfs_mountpoint_expiry_timeout,
46		.maxlen		= sizeof(nfs_mountpoint_expiry_timeout),
47		.mode		= 0644,
48		.proc_handler	= proc_dointvec_jiffies,
49	},
50	{
51		.procname	= "nfs_congestion_kb",
52		.data		= &nfs_congestion_kb,
53		.maxlen		= sizeof(nfs_congestion_kb),
54		.mode		= 0644,
55		.proc_handler	= proc_dointvec,
56	},
57	{ }
58};
59
60static ctl_table nfs_cb_sysctl_dir[] = {
61	{
62		.procname = "nfs",
63		.mode = 0555,
64		.child = nfs_cb_sysctls,
65	},
66	{ }
67};
68
69static ctl_table nfs_cb_sysctl_root[] = {
70	{
71		.procname = "fs",
72		.mode = 0555,
73		.child = nfs_cb_sysctl_dir,
74	},
75	{ }
76};
77
78int nfs_register_sysctl(void)
79{
80	nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root);
81	if (nfs_callback_sysctl_table == NULL)
82		return -ENOMEM;
83	return 0;
84}
85
86void nfs_unregister_sysctl(void)
87{
88	unregister_sysctl_table(nfs_callback_sysctl_table);
89	nfs_callback_sysctl_table = NULL;
90}