src/pld/raw_bit.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2022 by Daniel Anselmi                                  *
   5  *   danselmi@gmx.ch                                                       *
   6  ***************************************************************************/
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include "config.h"
  10 #endif
  11
  12 #include "raw_bit.h"
  13 #include "pld.h"
  14
  15 #include <helper/system.h>
  16 #include <helper/log.h>
  17
  18
  19 int cpld_read_raw_bit_file(struct raw_bit_file *bit_file, const char *filename)
  20 {
  21         FILE *input_file = fopen(filename, "rb");
  22
  23         if (!input_file) {
  24                 LOG_ERROR("Couldn't open %s: %s", filename, strerror(errno));
  25                 return ERROR_PLD_FILE_LOAD_FAILED;
  26         }
  27
  28         fseek(input_file, 0, SEEK_END);
  29         long length = ftell(input_file);
  30         fseek(input_file, 0, SEEK_SET);
  31
  32         if (length < 0) {
  33                 fclose(input_file);
  34                 LOG_ERROR("Failed to get length of file %s: %s", filename, strerror(errno));
  35                 return ERROR_PLD_FILE_LOAD_FAILED;
  36         }
  37         bit_file->length = (size_t)length;
  38
  39         bit_file->data = malloc(bit_file->length);
  40         if (!bit_file->data) {
  41                 fclose(input_file);
  42                 LOG_ERROR("Out of memory");
  43                 return ERROR_PLD_FILE_LOAD_FAILED;
  44         }
  45
  46         size_t read_count = fread(bit_file->data, sizeof(char), bit_file->length, input_file);
  47         fclose(input_file);
  48         if (read_count != bit_file->length) {
  49                 free(bit_file->data);
  50                 bit_file->data = NULL;
  51                 return ERROR_PLD_FILE_LOAD_FAILED;
  52         }
  53
  54         return ERROR_OK;
  55 }