#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)
/**
* Retrieves the value of the specified firmware environment variable and its attributes.
* The user account that the app is running under must have the SE_SYSTEM_ENVIRONMENT_NAME privilege.
*
* @param VariableName The name of the firmware environment variable. The pointer must not be NULL.
* @param VendorGuid The GUID that represents the namespace of the firmware environment variable.
* @param Buffer A pointer to a buffer that receives the value of the specified firmware environment variable.
* @param BufferLength The size of the \c Buffer, in bytes.
* @param Attributes Bitmask identifying UEFI variable attributes associated with the variable.
* @return NTSTATUS Successful or errant status.
*/
NTSYSCALLAPI
NTSTATUS
NTAPI
NtQuerySystemEnvironmentValueEx(
_In_ PUNICODE_STRING VariableName,
_In_ PCGUID VendorGuid,
_Out_writes_bytes_opt_(*BufferLength) PVOID Buffer,
_Inout_ PULONG BufferLength,
_Out_opt_ PULONG Attributes // EFI_VARIABLE_*
);
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#ifndef _NTZWAPI_H
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwQuerySystemEnvironmentValueEx(
_In_ PUNICODE_STRING VariableName,
_In_ PCGUID VendorGuid,
_Out_writes_bytes_opt_(*BufferLength) PVOID Buffer,
_Inout_ PULONG BufferLength,
_Out_opt_ PULONG Attributes // EFI_VARIABLE_*
);
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