1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * linux/fs/nfs/nfs4sysctl.c |
4 | * |
5 | * Sysctl interface to NFS v4 parameters |
6 | * |
7 | * Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com> |
8 | */ |
9 | #include <linux/sysctl.h> |
10 | #include <linux/nfs_fs.h> |
11 | |
12 | #include "nfs4_fs.h" |
13 | #include "nfs4idmap.h" |
14 | #include "callback.h" |
15 | |
16 | static const int nfs_set_port_min; |
17 | static const int nfs_set_port_max = 65535; |
18 | static struct ctl_table_header *nfs4_callback_sysctl_table; |
19 | |
20 | static struct ctl_table nfs4_cb_sysctls[] = { |
21 | { |
22 | .procname = "nfs_callback_tcpport" , |
23 | .data = &nfs_callback_set_tcpport, |
24 | .maxlen = sizeof(int), |
25 | .mode = 0644, |
26 | .proc_handler = proc_dointvec_minmax, |
27 | .extra1 = (int *)&nfs_set_port_min, |
28 | .extra2 = (int *)&nfs_set_port_max, |
29 | }, |
30 | { |
31 | .procname = "idmap_cache_timeout" , |
32 | .data = &nfs_idmap_cache_timeout, |
33 | .maxlen = sizeof(int), |
34 | .mode = 0644, |
35 | .proc_handler = proc_dointvec, |
36 | }, |
37 | { } |
38 | }; |
39 | |
40 | int nfs4_register_sysctl(void) |
41 | { |
42 | nfs4_callback_sysctl_table = register_sysctl("fs/nfs" , |
43 | nfs4_cb_sysctls); |
44 | if (nfs4_callback_sysctl_table == NULL) |
45 | return -ENOMEM; |
46 | return 0; |
47 | } |
48 | |
49 | void nfs4_unregister_sysctl(void) |
50 | { |
51 | unregister_sysctl_table(table: nfs4_callback_sysctl_table); |
52 | nfs4_callback_sysctl_table = NULL; |
53 | } |
54 | |