Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
os
linux
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}