RtlIsZeroLuid - NtDoc

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

FORCEINLINE
BOOLEAN
NTAPI_INLINE
RtlIsZeroLuid(
    _In_ PLUID L1
    )
{
    return (L1->LowPart | L1->HighPart) == 0;
}

#endif

View code on GitHub
// wdm.h

void RtlIsZeroLuid(
  [in] L1
);
View the official Windows Driver Kit DDI reference

NtDoc

This macro is documented in Windows Driver Kit.

Windows Driver Kit DDI reference (nf-wdm-rtliszeroluid)

Description

The RtlIsZeroLuid macro determines if the specified LUID is the zero LUID.

Parameters

L1 [in]

Specifies the LUID to check.

Remarks

RtlIsZeroLuid returns TRUE if _L1_ is zero, and returns FALSE otherwise.