// SPDX-License-Identifier: GPL-2.0 /* * linux/fs/nfs/nfs4sysctl.c * * Sysctl interface to NFS v4 parameters * * Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com> */ #include <linux/sysctl.h> #include <linux/nfs_fs.h> #include "nfs4_fs.h" #include "nfs4idmap.h" #include "callback.h" static const int nfs_set_port_min; static const int nfs_set_port_max = 65535; static struct ctl_table_header *nfs4_callback_sysctl_table; static struct ctl_table nfs4_cb_sysctls[] = { { .procname = "nfs_callback_tcpport", .data = &nfs_callback_set_tcpport, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec_minmax, .extra1 = (int *)&nfs_set_port_min, .extra2 = (int *)&nfs_set_port_max, }, { .procname = "idmap_cache_timeout", .data = &nfs_idmap_cache_timeout, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec, }, { } }; static struct ctl_table nfs4_cb_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, .child = nfs4_cb_sysctls, }, { } }; static struct ctl_table nfs4_cb_sysctl_root[] = { { .procname = "fs", .mode = 0555, .child = nfs4_cb_sysctl_dir, }, { } }; int nfs4_register_sysctl(void) { nfs4_callback_sysctl_table = register_sysctl_table(nfs4_cb_sysctl_root); if (nfs4_callback_sysctl_table == NULL) return -ENOMEM; return 0; } void nfs4_unregister_sysctl(void) { unregister_sysctl_table(nfs4_callback_sysctl_table); nfs4_callback_sysctl_table = NULL; }