Merge branch 'next' into for-linus
[linux-2.6-microblaze.git] / fs / nfs / nfs4sysctl.c
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(nfs4_callback_sysctl_table);
52         nfs4_callback_sysctl_table = NULL;
53 }