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Trond Myklebusta72b4422006-01-03 09:55:41 +01001/*
2 * linux/fs/nfs/sysctl.c
3 *
4 * Sysctl interface to NFS parameters
5 */
Trond Myklebusta72b4422006-01-03 09:55:41 +01006#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>
Trond Myklebust58df0952006-01-03 09:55:57 +010013#include <linux/nfs_idmap.h>
Trond Myklebust51d8fa62006-06-09 09:34:20 -040014#include <linux/nfs_fs.h>
Trond Myklebusta72b4422006-01-03 09:55:41 +010015
16#include "callback.h"
17
18static const int nfs_set_port_min = 0;
19static const int nfs_set_port_max = 65535;
20static struct ctl_table_header *nfs_callback_sysctl_table;
Trond Myklebusta72b4422006-01-03 09:55:41 +010021
22static ctl_table nfs_cb_sysctls[] = {
23#ifdef CONFIG_NFS_V4
24 {
25 .ctl_name = CTL_UNNUMBERED,
26 .procname = "nfs_callback_tcpport",
27 .data = &nfs_callback_set_tcpport,
28 .maxlen = sizeof(int),
29 .mode = 0644,
30 .proc_handler = &proc_dointvec_minmax,
31 .extra1 = (int *)&nfs_set_port_min,
32 .extra2 = (int *)&nfs_set_port_max,
33 },
Trond Myklebust58df0952006-01-03 09:55:57 +010034 {
35 .ctl_name = CTL_UNNUMBERED,
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 .strategy = &sysctl_jiffies,
42 },
Trond Myklebusta72b4422006-01-03 09:55:41 +010043#endif
Trond Myklebust51d8fa62006-06-09 09:34:20 -040044 {
45 .ctl_name = CTL_UNNUMBERED,
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 .strategy = &sysctl_jiffies,
52 },
Trond Myklebusta72b4422006-01-03 09:55:41 +010053 { .ctl_name = 0 }
54};
55
56static ctl_table nfs_cb_sysctl_dir[] = {
57 {
58 .ctl_name = CTL_UNNUMBERED,
59 .procname = "nfs",
60 .mode = 0555,
61 .child = nfs_cb_sysctls,
62 },
63 { .ctl_name = 0 }
64};
65
66static ctl_table nfs_cb_sysctl_root[] = {
67 {
68 .ctl_name = CTL_FS,
69 .procname = "fs",
70 .mode = 0555,
71 .child = nfs_cb_sysctl_dir,
72 },
73 { .ctl_name = 0 }
74};
75
76int nfs_register_sysctl(void)
77{
78 nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
79 if (nfs_callback_sysctl_table == NULL)
80 return -ENOMEM;
81 return 0;
82}
83
84void nfs_unregister_sysctl(void)
85{
86 unregister_sysctl_table(nfs_callback_sysctl_table);
87 nfs_callback_sysctl_table = NULL;
88}