Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 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> |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 10 | #include <linux/nfs_fs.h> |
| 11 | |
Stanislav Kinsbursky | 22e24309 | 2012-10-02 14:19:09 +0400 | [diff] [blame] | 12 | #include "nfs4_fs.h" |
Anna Schumaker | 40c64c2 | 2015-04-15 13:00:05 -0400 | [diff] [blame] | 13 | #include "nfs4idmap.h" |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 14 | #include "callback.h" |
| 15 | |
Wei Tang | ed47675 | 2015-12-04 16:06:57 +0800 | [diff] [blame] | 16 | static const int nfs_set_port_min; |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 17 | static const int nfs_set_port_max = 65535; |
| 18 | static struct ctl_table_header *nfs4_callback_sysctl_table; |
| 19 | |
Joe Perches | f5102e5 | 2014-06-06 14:38:03 -0700 | [diff] [blame] | 20 | static struct ctl_table nfs4_cb_sysctls[] = { |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 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, |
Jan Chochol | cbebc6e | 2018-01-05 08:39:12 +0100 | [diff] [blame] | 35 | .proc_handler = proc_dointvec, |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 36 | }, |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 37 | }; |
| 38 | |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 39 | int nfs4_register_sysctl(void) |
| 40 | { |
Luis Chamberlain | d2235a70 | 2023-03-10 00:39:18 -0800 | [diff] [blame] | 41 | nfs4_callback_sysctl_table = register_sysctl("fs/nfs", |
| 42 | nfs4_cb_sysctls); |
Bryan Schumaker | 466bfe7 | 2012-07-16 16:39:14 -0400 | [diff] [blame] | 43 | if (nfs4_callback_sysctl_table == NULL) |
| 44 | return -ENOMEM; |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | void nfs4_unregister_sysctl(void) |
| 49 | { |
| 50 | unregister_sysctl_table(nfs4_callback_sysctl_table); |
| 51 | nfs4_callback_sysctl_table = NULL; |
| 52 | } |