Function exfat_get_next_cluster

src/exfat_dir.c:177–198

#define ATTR_ARCH    32 /* archived */

static unsigned int exfat_get_next_cluster(disk_t *disk_car,const partition_t *partition, const uint64_t offset, const unsigned int cluster)
{
  unsigned char *buffer=(unsigned char*)MALLOC(disk_car->sector_size);
  unsigned int next_cluster;
  const uint32_t *p32=(const uint32_t*)buffer;
  const uint64_t offset_s=cluster / (disk_car->sector_size/4);
  const uint64_t offset_o=cluster % (disk_car->sector_size/4);
  if((unsigned)disk_car->pread(disk_car, buffer, disk_car->sector_size,
	partition->part_offset + offset + offset_s * disk_car->sector_size) != disk_car->sector_size)
  {
    log_error("exfat_get_next_cluster read error\n");
    free(buffer);
    return 0;
  }
  /* 0x00000000: free cluster
   * 0xFFFFFFF7: bad cluster
   * 0xFFFFFFFF: EOC End of cluster
   * */
  next_cluster=le32(p32[offset_o]);
  free(buffer);
  return next_cluster;
}

static int dir_exfat_aux(const unsigned char*buffer, const unsigned int size, const dir_data_t *dir_data, file_info_t *dir_list)
{