Function rebuild_FAT_BS

src/fat_adv.c:1897–2219

#endif

int rebuild_FAT_BS(disk_t *disk_car, partition_t *partition, const int verbose, const int dump_ind, const unsigned int expert, char**current_cmd)
{
  unsigned long int max_offset;
  unsigned int fat_length=0;
  unsigned int sectors_per_cluster=0;
  unsigned int reserved=0;
  unsigned int dir_entries=0;
  unsigned int fats=2;
  int p_fat12,p_fat16,p_fat32;
  upart_type_t upart_type;
  /*
   * Using partition size, check if partition can be FAT12, FAT16 or FAT32
   * */
  if(partition->part_size>(uint64_t)(2*1024+1)*1024*1024)
  {
    p_fat32=1;
    p_fat16=0;
    p_fat12=0;
  }
  else
    /* 1<<12 clusters * 8 secteurs/clusters= 32768 secteurs 
       fat_length=((1<<12+1)*1.5/DEFAULT_SECTOR_SIZE)+1=13; */
    if(partition->part_size>=(uint64_t)(1+2*13+32768+63)*512)
    {
      p_fat32=1;
      p_fat16=1;
      p_fat12=0;
    }
    else
    {
      p_fat32=0;
      p_fat16=1;
      p_fat12=1;
    }
#ifdef TESTING
  p_fat32=1; p_fat16=1; p_fat12=1;
#endif
  if(verbose)
  {
    log_info("\n");
    log_partition(disk_car,partition);
    log_info("rebuild_FAT_BS p_fat12 %d, p_fat16 %d, p_fat32 %d\n", p_fat12,p_fat16,p_fat32);
  }
  {
    /* Set fat_length_max */
    unsigned long int fat_length_max;
    unsigned int sectors_per_cluster_min=disk_car->sector_size;
    if(p_fat32)
    {	/* Cluster 512 bytes */
      fat_length_max=partition->part_size/sectors_per_cluster_min*4;
    }
    else if(p_fat16)
    {
      while(partition->part_size/sectors_per_cluster_min > (1<<16))
	sectors_per_cluster_min*=2;
      fat_length_max=partition->part_size/sectors_per_cluster_min*2;
    }
    else