RIOT/dist/tools/riotboot_gen_hdr/common.h

/*
 * Copyright (C) 2017 Kaspar Schleiser <kaspar@schleiser.de>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License v2. See the file LICENSE for more details.
 */

#ifndef COMMON_H
#define COMMON_H

#include <stddef.h>

#ifdef __cplusplus
 extern "C" {
#endif

/**
 * @brief  Write len bytes of a given buffer into a file
 *
 * @param[in]  filename    name of the file to be written
 * @param[in]  buf         a pointer to the buffer which needs to be written
 * @param[in]  len         the number of bytes from buf to be written
 *
 */
int to_file(const char *filename, const void *buf, size_t len);

/**
 * @brief  Read len bytes from a given file into a buffer
 *
 * @param[in]  filename  name of the file to be read
 * @param[out] buf       a pointer to the buffer to store the content
 * @param[out] len       the number of bytes to be read
 *
 * @return  Number of bytes read, or negative error
 */
int from_file(const char *filename, const void *buf, size_t len);

#ifdef __cplusplus
} /* end extern "C" */
#endif

#endif /* COMMON_H */