#ifndef _NTOBAPI_H
//
// Objects, handles
//
#if (PHNT_MODE != PHNT_MODE_KERNEL)

/**
 * The NtSetInformationObject routine changes various kinds of information about an object.
 *
 * \param Handle The handle of the object for which information is being changed.
 * \param ObjectInformationClass The type of information, supplied in the buffer pointed to by ObjectInformation, to set for the object.
 * \param ObjectInformation Pointer to the class-specific input. Ignored for ObjectSessionInformation and ObjectSessionObjectInformation.
 * \param ObjectInformationLength The input size in bytes. Exactly 2 for ObjectHandleFlagInformation; ignored for the session classes.
 * \return NTSTATUS Successful or errant status.
 * \remarks ObjectHandleFlagInformation changes this handle, not the object or other handles.
 * Nonzero BOOLEAN values request TRUE. Query again if the object type forbids inheritance:
 * ObSetHandleAttributes can return success without applying either requested flag.
 * For the two session classes, pass NULL/0; neither buffer argument is consumed.
 */
_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
NtSetInformationObject(
    _In_ HANDLE Handle,
    _In_ OBJECT_INFORMATION_CLASS ObjectInformationClass,
    _When_(ObjectInformationClass == ObjectSessionInformation || ObjectInformationClass == ObjectSessionObjectInformation, _In_opt_)
    _When_(ObjectInformationClass != ObjectSessionInformation && ObjectInformationClass != ObjectSessionObjectInformation, _In_reads_bytes_(ObjectInformationLength)) PVOID ObjectInformation,
    _In_ ULONG ObjectInformationLength
    );

#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwSetInformationObject(
    _In_ HANDLE Handle,
    _In_ OBJECT_INFORMATION_CLASS ObjectInformationClass,
    _When_(ObjectInformationClass == ObjectSessionInformation || ObjectInformationClass == ObjectSessionObjectInformation, _In_opt_)
    _When_(ObjectInformationClass != ObjectSessionInformation && ObjectInformationClass != ObjectSessionObjectInformation, _In_reads_bytes_(ObjectInformationLength)) PVOID ObjectInformation,
    _In_ ULONG ObjectInformationLength
    );

#endif
View code on GitHub