#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)

/**
 * The NtAllocateUuids routine allocates a block of universally unique identifiers (UUIDs).
 *
 * \param Time A pointer to a variable that receives the timestamp used for the allocated UUIDs.
 * \param Range A pointer to a variable that receives the number of UUIDs available in the allocated range.
 * \param Sequence A pointer to a variable that receives the clock sequence value.
 * \param Seed A pointer to a variable that receives the seed (node identifier) value.
 * \return NTSTATUS Successful or errant status.
 * \see https://learn.microsoft.com/en-us/windows/win32/api/rpcdce/nf-rpcdce-uuidcreatesequential
 */
_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
NtAllocateUuids(
    _Out_ PULARGE_INTEGER Time,
    _Out_ PULONG Range,
    _Out_ PULONG Sequence,
    _Out_ PCHAR Seed
    );

#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwAllocateUuids(
    _Out_ PULARGE_INTEGER Time,
    _Out_ PULONG Range,
    _Out_ PULONG Sequence,
    _Out_ PCHAR Seed
    );

#endif
View code on GitHub