| /* |
| * sysctl.c - Code for sysctl handling in NTFS Linux kernel driver. Part of |
| * the Linux-NTFS project. Adapted from the old NTFS driver, |
| * Copyright (C) 1997 Martin von Löwis, Régis Duchesne |
| * |
| * Copyright (c) 2002-2005 Anton Altaparmakov |
| * |
| * This program/include file is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as published |
| * by the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program/include file is distributed in the hope that it will be |
| * useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
| * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program (in the main directory of the Linux-NTFS |
| * distribution in the file COPYING); if not, write to the Free Software |
| * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifdef DEBUG |
| |
| #include <linux/module.h> |
| |
| #ifdef CONFIG_SYSCTL |
| |
| #include <linux/proc_fs.h> |
| #include <linux/sysctl.h> |
| |
| #include "sysctl.h" |
| #include "debug.h" |
| |
| /* Definition of the ntfs sysctl. */ |
| static struct ctl_table ntfs_sysctls[] = { |
| { |
| .procname = "ntfs-debug", |
| .data = &debug_msgs, /* Data pointer and size. */ |
| .maxlen = sizeof(debug_msgs), |
| .mode = 0644, /* Mode, proc handler. */ |
| .proc_handler = proc_dointvec |
| }, |
| {} |
| }; |
| |
| /* Define the parent directory /proc/sys/fs. */ |
| static struct ctl_table sysctls_root[] = { |
| { |
| .procname = "fs", |
| .mode = 0555, |
| .child = ntfs_sysctls |
| }, |
| {} |
| }; |
| |
| /* Storage for the sysctls header. */ |
| static struct ctl_table_header *sysctls_root_table; |
| |
| /** |
| * ntfs_sysctl - add or remove the debug sysctl |
| * @add: add (1) or remove (0) the sysctl |
| * |
| * Add or remove the debug sysctl. Return 0 on success or -errno on error. |
| */ |
| int ntfs_sysctl(int add) |
| { |
| if (add) { |
| BUG_ON(sysctls_root_table); |
| sysctls_root_table = register_sysctl_table(sysctls_root); |
| if (!sysctls_root_table) |
| return -ENOMEM; |
| } else { |
| BUG_ON(!sysctls_root_table); |
| unregister_sysctl_table(sysctls_root_table); |
| sysctls_root_table = NULL; |
| } |
| return 0; |
| } |
| |
| #endif /* CONFIG_SYSCTL */ |
| #endif /* DEBUG */ |