This commit was manufactured by cvs2svn to create branch 'vserver'.
[linux-2.6.git] / fs / nfs / sysctl.c
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>
14 #include <linux/nfs_idmap.h>
15
16 #include "callback.h"
17
18 static const int nfs_set_port_min = 0;
19 static const int nfs_set_port_max = 65535;
20 static struct ctl_table_header *nfs_callback_sysctl_table;
21 /*
22  * Something that isn't CTL_ANY, CTL_NONE or a value that may clash.
23  * Use the same values as fs/lockd/svc.c
24  */
25 #define CTL_UNNUMBERED -2
26
27 static ctl_table nfs_cb_sysctls[] = {
28 #ifdef CONFIG_NFS_V4
29         {
30                 .ctl_name = CTL_UNNUMBERED,
31                 .procname = "nfs_callback_tcpport",
32                 .data = &nfs_callback_set_tcpport,
33                 .maxlen = sizeof(int),
34                 .mode = 0644,
35                 .proc_handler = &proc_dointvec_minmax,
36                 .extra1 = (int *)&nfs_set_port_min,
37                 .extra2 = (int *)&nfs_set_port_max,
38         },
39         {
40                 .ctl_name = CTL_UNNUMBERED,
41                 .procname = "idmap_cache_timeout",
42                 .data = &nfs_idmap_cache_timeout,
43                 .maxlen = sizeof(int),
44                 .mode = 0644,
45                 .proc_handler = &proc_dointvec_jiffies,
46                 .strategy = &sysctl_jiffies,
47         },
48 #endif
49         { .ctl_name = 0 }
50 };
51
52 static ctl_table nfs_cb_sysctl_dir[] = {
53         {
54                 .ctl_name = CTL_UNNUMBERED,
55                 .procname = "nfs",
56                 .mode = 0555,
57                 .child = nfs_cb_sysctls,
58         },
59         { .ctl_name = 0 }
60 };
61
62 static ctl_table nfs_cb_sysctl_root[] = {
63         {
64                 .ctl_name = CTL_FS,
65                 .procname = "fs",
66                 .mode = 0555,
67                 .child = nfs_cb_sysctl_dir,
68         },
69         { .ctl_name = 0 }
70 };
71
72 int nfs_register_sysctl(void)
73 {
74         nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0);
75         if (nfs_callback_sysctl_table == NULL)
76                 return -ENOMEM;
77         return 0;
78 }
79
80 void nfs_unregister_sysctl(void)
81 {
82         unregister_sysctl_table(nfs_callback_sysctl_table);
83         nfs_callback_sysctl_table = NULL;
84 }