/* * 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 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 ctl_table sysctls_root[] = {	{		.procname	= "fs",		.mode		= 0555,		.child		= ntfs_sysctls	},	{}}; /* Storage for the sysctls header. */static struct ctl_table_header *sysctls_root_table = NULL; /** * 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 */