raw_bit.c

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// SPDX-License-Identifier: GPL-2.0-or-later
 
/***************************************************************************
 *   Copyright (C) 2022 by Daniel Anselmi                                  *
 *   danselmi@gmx.ch                                                       *
 ***************************************************************************/
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include "raw_bit.h"
#include "pld.h"
 
#include <helper/system.h>
#include <helper/log.h>
 
 
int cpld_read_raw_bit_file(struct raw_bit_file *bit_file, const char *filename)
{
    FILE *input_file = fopen(filename, "rb");
 
    if (!input_file) {
        LOG_ERROR("Couldn't open %s: %s", filename, strerror(errno));
        return ERROR_PLD_FILE_LOAD_FAILED;
    }
 
    fseek(input_file, 0, SEEK_END);
    long length = ftell(input_file);
    fseek(input_file, 0, SEEK_SET);
 
    if (length < 0) {
        fclose(input_file);
        LOG_ERROR("Failed to get length of file %s: %s", filename, strerror(errno));
        return ERROR_PLD_FILE_LOAD_FAILED;
    }
    bit_file->length = (size_t)length;
 
    bit_file->data = malloc(bit_file->length);
    if (!bit_file->data) {
        fclose(input_file);
        LOG_ERROR("Out of memory");
        return ERROR_PLD_FILE_LOAD_FAILED;
    }
 
    size_t read_count = fread(bit_file->data, sizeof(char), bit_file->length, input_file);
    fclose(input_file);
    if (read_count != bit_file->length) {
        free(bit_file->data);
        bit_file->data = NULL;
        return ERROR_PLD_FILE_LOAD_FAILED;
    }
 
    return ERROR_OK;
}