RtlIsRoot - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
#ifndef _NTRTL_H

#define RtlIsRoot(Links) ((RtlParent(Links) == (PRTL_SPLAY_LINKS)(Links)))

#endif

View code on GitHub

This macro is documented in Windows Driver Kit.

Edit description on GitHub