NtEnumerateSystemEnvironmentValuesEx - NtDoc

#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtEnumerateSystemEnvironmentValuesEx(
    _In_ ULONG InformationClass, // SYSTEM_ENVIRONMENT_INFORMATION_CLASS
    _Out_ PVOID Buffer,
    _Inout_ PULONG BufferLength
    );

#endif
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwEnumerateSystemEnvironmentValuesEx(
    _In_ ULONG InformationClass, // SYSTEM_ENVIRONMENT_INFORMATION_CLASS
    _Out_ PVOID Buffer,
    _Inout_ PULONG BufferLength
    );

#endif
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