Commit | Line | Data |
---|---|---|
a72b4422 TM |
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 | ||
15 | #include "callback.h" | |
16 | ||
17 | static const int nfs_set_port_min = 0; | |
18 | static const int nfs_set_port_max = 65535; | |
19 | static struct ctl_table_header *nfs_callback_sysctl_table; | |
20 | /* | |
21 | * Something that isn't CTL_ANY, CTL_NONE or a value that may clash. | |
22 | * Use the same values as fs/lockd/svc.c | |
23 | */ | |
24 | #define CTL_UNNUMBERED -2 | |
25 | ||
26 | static ctl_table nfs_cb_sysctls[] = { | |
27 | #ifdef CONFIG_NFS_V4 | |
28 | { | |
29 | .ctl_name = CTL_UNNUMBERED, | |
30 | .procname = "nfs_callback_tcpport", | |
31 | .data = &nfs_callback_set_tcpport, | |
32 | .maxlen = sizeof(int), | |
33 | .mode = 0644, | |
34 | .proc_handler = &proc_dointvec_minmax, | |
35 | .extra1 = (int *)&nfs_set_port_min, | |
36 | .extra2 = (int *)&nfs_set_port_max, | |
37 | }, | |
38 | #endif | |
39 | { .ctl_name = 0 } | |
40 | }; | |
41 | ||
42 | static ctl_table nfs_cb_sysctl_dir[] = { | |
43 | { | |
44 | .ctl_name = CTL_UNNUMBERED, | |
45 | .procname = "nfs", | |
46 | .mode = 0555, | |
47 | .child = nfs_cb_sysctls, | |
48 | }, | |
49 | { .ctl_name = 0 } | |
50 | }; | |
51 | ||
52 | static ctl_table nfs_cb_sysctl_root[] = { | |
53 | { | |
54 | .ctl_name = CTL_FS, | |
55 | .procname = "fs", | |
56 | .mode = 0555, | |
57 | .child = nfs_cb_sysctl_dir, | |
58 | }, | |
59 | { .ctl_name = 0 } | |
60 | }; | |
61 | ||
62 | int nfs_register_sysctl(void) | |
63 | { | |
64 | nfs_callback_sysctl_table = register_sysctl_table(nfs_cb_sysctl_root, 0); | |
65 | if (nfs_callback_sysctl_table == NULL) | |
66 | return -ENOMEM; | |
67 | return 0; | |
68 | } | |
69 | ||
70 | void nfs_unregister_sysctl(void) | |
71 | { | |
72 | unregister_sysctl_table(nfs_callback_sysctl_table); | |
73 | nfs_callback_sysctl_table = NULL; | |
74 | } |