NtInitiatePowerAction

NTSTATUS __stdcall NtInitiatePowerAction(
        POWER_ACTION SystemAction,
        _SYSTEM_POWER_STATE LightestSystemState,
        UINT64 Flags,
        UINT8 Asynchronous){
  _ETHREAD *CurrentThread; 
  int Lock; 
  _KEVENT *v6; 
  int v8; 
  char v11; 
  _KEVENT *PoolWithTag; 
  char *p_WaitListHead; 
  __int64 v14; 
  char **Blink; 
  PLARGE_INTEGER Timeout; 
  union _LARGE_INTEGER v18; 
  _DWORD a3[4]; 
  int a1; 
  int a1_4; 
  __int128 v22; 
  v22 = 0i64;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  Lock = 0;
  v6 = 0i64;
  v18.QuadPart = -1500000000i64;
  v8 = Flags;
  v11 = *((_BYTE *)CurrentThread + 562);
  if( v11 )
  {
    if( SystemAction == PowerActionWarmEject )
      return -1073741811;
    if( !SeSinglePrivilegeCheck(*(_QWORD *)&SeShutdownPrivilege, *((_BYTE *)CurrentThread + 562)) )
      return -1073741727;
  }
  if( LightestSystemState > PowerSystemMaximum
    || SystemAction > PowerActionWarmEject
    || (v8 & 0x10000000) != 0
    || SystemAction == PowerActionSleep && LightestSystemState >= PowerSystemHibernate
    || (v8 & 0xCFFFFC0) != 0 )
  {
    return -1073741811;
  }
  if( (unsigned int)(SystemAction - 4) > 2 && PsIsCurrentThreadInServerSilo() )
    return -1073741637;
  a3[2] = 0;
  a3[0] = SystemAction;
  a3[1] = v8;
  a1_4 = 128;
  v22 = 0i64;
  if( !v11 && SystemAction == PowerActionShutdownOff && (v8 & 0x3000000) != 0 )
  {
    a1 = 15;
  }
  else
  {
    a1 = 4;
    PopDiagTracePolicyInitiatePowerActionApiCall((unsigned int)SystemAction, (unsigned int)LightestSystemState);
  }
  if( !Asynchronous )
  {
    PoolWithTag = (_KEVENT *)ExAllocatePoolWithTag(NonPagedPoolNx, 0x38ui64, 0x57634150ui64);
    v6 = PoolWithTag;
    if( !PoolWithTag )
      return -1073741670;
    *(_OWORD *)&PoolWithTag->Header.Lock = 0i64;
    *(_OWORD *)&PoolWithTag->Header.WaitListHead.Blink = 0i64;
    PoolWithTag[1].Header.WaitListHead = 0i64;
    *(_QWORD *)&PoolWithTag[2].Header.Lock = &a1;
    KeInitializeEvent(PoolWithTag, NotificationEvent, 0);
    a1_4 |= 0x20u;
    *(_QWORD *)&v22 = v6;
  }
  if( (unsigned int)(SystemAction - 4) <= 2 && (*(_BYTE *)(&PopBsdPowerTransition + 1) & 8) == 0 )
  {
    PopAcquireRwLockExclusive(&PopBsdUpdateLock);
    *((_BYTE *)&PopBsdPowerTransition + 8) |= 8u;
    LOBYTE(PopBsdPowerTransitionExtension) = SleepReason;
    PopBsdHandleRequest(8i64);
    PopReleaseRwLock((UINT64)&PopBsdUpdateLock);
  }
  PopAcquirePolicyLock();
  LODWORD(Timeout) = 1;
  PopExecutePowerAction((INT64)&a1, 0i64, (INT64)a3, (unsigned int)LightestSystemState, (UINT64)Timeout);
  PopReleasePolicyLock();
  if( v6 )
  {
    p_WaitListHead = (char *)&v6[1].Header.WaitListHead;
    if( !v6[1].Header.WaitListHead.Flink )
      goto LABEL_23;
    Lock = KeWaitForSingleObject(v6, Suspended, 0, 1u, &v18);
    if( Lock == 258 && (byte_140C23261 & 3) != 0 )
      Lock = KeWaitForSingleObject(v6, Suspended, 0, 1u, 0i64);
    PopAcquirePolicyLock();
    v14 = *(_QWORD *)p_WaitListHead;
    if( *(char **)(*(_QWORD *)p_WaitListHead + 8i64) != p_WaitListHead
      || (Blink = (char **)v6[1].Header.WaitListHead.Blink, *Blink != p_WaitListHead) )
    {
      __fastfail(3u);
    }
    *Blink = (char *)v14;
    *(_QWORD *)(v14 + 8) = Blink;
    PopReleasePolicyLock();
    if( Lock >= 0 )
    {
LABEL_23:
      Lock = v6[1].Header.Lock;
      if( Lock >= 0 )
        Lock = 0;
    }
    ExFreePoolWithTag(v6, 0);
  }
  return Lock;
}

Referenced by: