Let's go for some missing constants: /* * Flags for Alarm Attributes */ #define XSyncCACounter (1L<<0) #define XSyncCAValueType (1L<<1) #define XSyncCAValue (1L<<2) #define XSyncCATestType (1L<<3) #define XSyncCADelta (1L<<4) #define XSyncCAEvents (1L<<5) I think that they should be added Vincent