MAGIC_CHG
#define COMADJ_MAGIC MAGIC_CHG('C','M','A','D')
#define UUID_MAGIC MAGIC_CHG('U','U','I','D')
#define TOUCH_MAGIC MAGIC_CHG('T','U','C','H')
#define AD_MAGIC MAGIC_CHG('B','V','A','D')
#define PHAD_MAGIC MAGIC_CHG('P','H','A','D')