Contains the GUID for a volume or a user.
typedef struct { uint32_t timeLow; uint16_t timeMid; uint16_t timeHighAndVersion; uint8_t clockSeqHighAndReserved; uint8_t clockSeqLow; uint8_t node[6]; } volid_t, userid_t;
All of the fields in this structure are reserved. This is the NSS GUID_t structure.