[Source Code][Learning] docsis-0.9.6.tar.bz2

1. deal with file

deal with file

[C Example] Deal with file
[Github][C Example] Deal with file

void 
decode_file (char *file)
{
  int ifd; 
  unsigned char *buffer;
  unsigned int buflen = 0;
  int rv = 0;
  struct stat st;
  if ((ifd = open (file, O_RDONLY)) == -1)
    {
      fprintf(stderr, "Error opening binary file %s: %s\n", file, strerror (errno));
      exit (-1);
    }
  if ((rv = fstat (ifd, &st)))
    {
      fprintf(stderr, "Can't stat file %s: %s\n", file, strerror (errno));
      exit (-1);
    }
  buffer = (unsigned char *) malloc (st.st_size * sizeof (unsigned char) + 1); //allocate the memory 
// +1 mean need to add one more null terminal (\0)
  buflen = read (ifd, buffer, st.st_size); 
  decode_main_aggregate (buffer, buflen);
  free(buffer);
}