rdcu_pkt_to_file.c

/**
 * @file   rdcu_pkt_to_file.c
 * @author Dominik Loidolt (dominik.loidolt@univie.ac.at)
 * @date   2020
 *
 * @copyright GPLv2
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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.
 *
 * @brief RDCU packets to file library
 *
 * This library provided a rmap_rx and rmap_tx function for the rdcu_rmap
 * library to write generated packets into text files.
 * @warning this part of the software is not intended to run on-board on the ICU.
 */

#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <errno.h>
#include <sys/stat.h>

#include <cmp_support.h>
#include <rdcu_pkt_to_file.h>
#include <cmp_rdcu.h>
#include <rdcu_rmap.h>
#include <rdcu_ctrl.h>
#include <rdcu_cmd.h>
#include <cmp_rdcu_testing.h>


/* Name of directory were the RMAP packages are stored */
static char tc_folder_dir[MAX_TC_FOLDER_DIR_LEN] = "TC_FILES";


/**
 * @brief set the directory name were the RMAP packages are stored
 *
 * @param dir_name	Name of directory were the RMAP packages are stored
 */

void set_tc_folder_dir(const char *dir_name)
{
	if (!dir_name)
		return;

	strncpy(tc_folder_dir, dir_name, sizeof(tc_folder_dir));
	/*  Ensure null-termination. */
	tc_folder_dir[sizeof(tc_folder_dir) - 1] = '\0';
}


/**
 * @brief return a file to write with the name format dir_name/XXX.tc, where XXX
 *	is n_tc in decimal representation
 *
 * @param dir_name	name of directory were the RMAP packages are stored
 * @param n_tc		number of TC commands
 *
 * @return	pointer to the new file stream
 * @see https://developers.redhat.com/blog/2018/05/24/detecting-string-truncation-with-gcc-8/
 */