/** Check system requirements.
 *
 * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
 * @copyright 2014-2015, Institute for Automation of Complex Power Systems, EONERC
 *   This file is part of S2SS. All Rights Reserved. Proprietary and confidential.
 *   Unauthorized copying of this file, via any medium is strictly prohibited.
 *********************************************************************************/

#ifndef _CHECKS_H_
#define _CHECKS_H_

/** Checks for realtime (PREEMPT_RT) patched kernel.
 *
 * See https://rt.wiki.kernel.org
 *
 * @retval 0 Kernel is patched.
 * @reval <>0 Kernel is not patched.
 */
int check_kernel_rt();

/** Check if kernel command line contains "isolcpus=" option.
 *
 * See https://www.kernel.org/doc/Documentation/kernel-parameters.txt
 *
 * @retval 0 Kernel has isolated cores.
 * @reval <>0 Kernel has no isolated cores.
 */
int check_kernel_cmdline();

/** Check if kernel is version is sufficient
 *
 * @retval 0 Kernel version is sufficient.
 * @reval <>0 Kernel version is not sufficient.
 */
int check_kernel_version();

/** Checks if a kernel module is loaded
 *
 * @param module the name of the module
 * @retval 0 Module is loaded.
 * @reval <>0 Module is not loaded.
 */
int check_kernel_module(char *module);

/** Check if program is running with super user (root) privileges.
 *
 *
 * @retval 0 Permissions are sufficient.
 * @reval <>0 Permissions are not sufficient.
 */
int check_root();

#endif /* _CHECKS_H_ */