1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * linux/fs/nfs/nfs4sysctl.c
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Sysctl interface to NFS v4 parameters
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com>
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #include <linux/sysctl.h>
10*4882a593Smuzhiyun #include <linux/nfs_fs.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include "nfs4_fs.h"
13*4882a593Smuzhiyun #include "nfs4idmap.h"
14*4882a593Smuzhiyun #include "callback.h"
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun static const int nfs_set_port_min;
17*4882a593Smuzhiyun static const int nfs_set_port_max = 65535;
18*4882a593Smuzhiyun static struct ctl_table_header *nfs4_callback_sysctl_table;
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static struct ctl_table nfs4_cb_sysctls[] = {
21*4882a593Smuzhiyun {
22*4882a593Smuzhiyun .procname = "nfs_callback_tcpport",
23*4882a593Smuzhiyun .data = &nfs_callback_set_tcpport,
24*4882a593Smuzhiyun .maxlen = sizeof(int),
25*4882a593Smuzhiyun .mode = 0644,
26*4882a593Smuzhiyun .proc_handler = proc_dointvec_minmax,
27*4882a593Smuzhiyun .extra1 = (int *)&nfs_set_port_min,
28*4882a593Smuzhiyun .extra2 = (int *)&nfs_set_port_max,
29*4882a593Smuzhiyun },
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun .procname = "idmap_cache_timeout",
32*4882a593Smuzhiyun .data = &nfs_idmap_cache_timeout,
33*4882a593Smuzhiyun .maxlen = sizeof(int),
34*4882a593Smuzhiyun .mode = 0644,
35*4882a593Smuzhiyun .proc_handler = proc_dointvec,
36*4882a593Smuzhiyun },
37*4882a593Smuzhiyun { }
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun static struct ctl_table nfs4_cb_sysctl_dir[] = {
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun .procname = "nfs",
43*4882a593Smuzhiyun .mode = 0555,
44*4882a593Smuzhiyun .child = nfs4_cb_sysctls,
45*4882a593Smuzhiyun },
46*4882a593Smuzhiyun { }
47*4882a593Smuzhiyun };
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun static struct ctl_table nfs4_cb_sysctl_root[] = {
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun .procname = "fs",
52*4882a593Smuzhiyun .mode = 0555,
53*4882a593Smuzhiyun .child = nfs4_cb_sysctl_dir,
54*4882a593Smuzhiyun },
55*4882a593Smuzhiyun { }
56*4882a593Smuzhiyun };
57*4882a593Smuzhiyun
nfs4_register_sysctl(void)58*4882a593Smuzhiyun int nfs4_register_sysctl(void)
59*4882a593Smuzhiyun {
60*4882a593Smuzhiyun nfs4_callback_sysctl_table = register_sysctl_table(nfs4_cb_sysctl_root);
61*4882a593Smuzhiyun if (nfs4_callback_sysctl_table == NULL)
62*4882a593Smuzhiyun return -ENOMEM;
63*4882a593Smuzhiyun return 0;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
nfs4_unregister_sysctl(void)66*4882a593Smuzhiyun void nfs4_unregister_sysctl(void)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun unregister_sysctl_table(nfs4_callback_sysctl_table);
69*4882a593Smuzhiyun nfs4_callback_sysctl_table = NULL;
70*4882a593Smuzhiyun }
71