#ifndef _NTSXS_H
#if (PHNT_MODE == PHNT_MODE_KERNEL)
typedef enum _ACTCTX_REQUESTED_RUN_LEVEL
{
ACTCTX_RUN_LEVEL_UNSPECIFIED = 0,
ACTCTX_RUN_LEVEL_AS_INVOKER,
ACTCTX_RUN_LEVEL_HIGHEST_AVAILABLE,
ACTCTX_RUN_LEVEL_REQUIRE_ADMIN,
ACTCTX_RUN_LEVEL_NUMBERS
} ACTCTX_REQUESTED_RUN_LEVEL;
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This enumeration is documented in Windows SDK.