Function save_header

src/savehdr.c:47–91

#define BACKUP_MAXSIZE 5120

int save_header(disk_t *disk_car, const partition_t *partition, const int verbose)
{
  unsigned char *buffer;
  FILE *f_backup;
  int res=0;
  if(verbose>1)
  {
    log_trace("save_header\n");
  }
  f_backup=fopen("header.log","ab");
  if(!f_backup)
  {
    log_critical("Can't create header.log file: %s\n",strerror(errno));
    return -1;
  }
  buffer=(unsigned char *)MALLOC(256*DEFAULT_SECTOR_SIZE);
  memset(buffer,0,DEFAULT_SECTOR_SIZE);
  {
    char status='D';
    switch(partition->status)
    {
      case STATUS_PRIM:           status='P'; break;
      case STATUS_PRIM_BOOT:      status='*'; break;
      case STATUS_EXT:            status='E'; break;
      case STATUS_EXT_IN_EXT:     status='X'; break;
      case STATUS_LOG:            status='L'; break;
      case STATUS_DELETED:        status='D'; break;
    }
    snprintf((char*)buffer,256*DEFAULT_SECTOR_SIZE,"%s\n%2u %c Sys=%02X %5u %3u %2u %5u %3u %2u %10lu\n",
	disk_car->description(disk_car), partition->order, status,
	(disk_car->arch->get_part_type!=NULL ?  disk_car->arch->get_part_type(partition) : 0),
	offset2cylinder(disk_car,partition->part_offset), offset2head(disk_car,partition->part_offset),offset2sector(disk_car,partition->part_offset),
	offset2cylinder(disk_car,partition->part_offset+partition->part_size-disk_car->sector_size), offset2head(disk_car,partition->part_offset+partition->part_size-disk_car->sector_size),offset2sector(disk_car,partition->part_offset+partition->part_size-disk_car->sector_size),
	(unsigned long)(partition->part_size/disk_car->sector_size));
  }
  if(fwrite(buffer,DEFAULT_SECTOR_SIZE,1,f_backup)!=1)
    res = -1;
  if(res>=0 && disk_car->pread(disk_car, buffer, 256 * DEFAULT_SECTOR_SIZE, partition->part_offset) != 256 * DEFAULT_SECTOR_SIZE)
    res = -1;
  if(res>=0 && fwrite(buffer,DEFAULT_SECTOR_SIZE,256,f_backup)!=256)
    res = -1;
  fclose(f_backup);
  free(buffer);
  return res;
}

backup_disk_t *partition_load(const disk_t *disk_car, const int verbose)
{