KsepShimDbChanged

INT64 __fastcall KsepShimDbChanged(){
  _ETHREAD *CurrentThread; 
  unsigned int v1; 
  char v2; 
  _ETHREAD *v3; 
  unsigned int SessionId; 
  char v5; 
  int v6; 
  bool v7; 
  __int64 v8; 
  unsigned __int64 v9; 
  int v10; 
  unsigned int v11; 
  __int64 v12; 
  int v14; 
  __int64 v15; 
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  v15 = 0i64;
  --*((_WORD *)CurrentThread + 242);
  ExAcquirePushLockExclusiveEx((UINT64)&KsepShimDbLock, 0i64);
  v1 = 0;
  if( KsepShimDatabaseTime(L"\\SystemRoot\\AppPatch\\drvmain.sdb") >= 0 )
  {
    if( qword_140C2ACC8 )
    {
      if( v15 != qword_140C2ACC8 )
      {
        qword_140C2ACC8 = v15;
        v1 = 1;
      }
    }
    else
    {
      qword_140C2ACC8 = v15;
    }
    v15 = 0i64;
    if( KsepShimDatabaseTime(L"\\SystemRoot\\AppPatch\\drvpatch.sdb") >= 0 )
    {
      if( qword_140C2AD00 )
      {
        if( v15 != qword_140C2AD00 )
        {
          qword_140C2AD00 = v15;
          v1 = 1;
        }
      }
      else
      {
        qword_140C2AD00 = v15;
      }
    }
  }
  v2 = _InterlockedExchangeAdd64((volatile signed __int64 *)&KsepShimDbLock, 0xFFFFFFFFFFFFFFFFui64);
  if( (v2 & 2) != 0 && (v2 & 4) == 0 )
    ExfTryToWakePushLock((volatile INT64 *)&KsepShimDbLock);
  v14 = 0;
  v3 = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType((UINT64)&KsepShimDbLock) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)v3 + 23));
  else
    SessionId = -1;
  --*((_WORD *)v3 + 243);
  v5 = ++*((_BYTE *)v3 + 794);
  v6 = (*((char *)v3 + 792) | *((char *)v3 + 870)) ^ 0x3F;
  while( 1 )
  {
    v7 = !_BitScanReverse((unsigned int *)&v8, v6);
    if( v7 )
      break;
    v9 = *((_QWORD *)v3 + 100) + 96 * v8;
    v6 &= ~(1 << v8);
    if( (*(_BYTE *)(v9 + 26) & 1) != 0
      && (*(_DWORD *)(v9 + 32) & 1) == 0
      && (*(_QWORD *)(v9 + 32) & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)&KsepShimDbLock & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v9 + 40) == SessionId )
    {
      *(_BYTE *)(v9 + 26) &= ~1u;
      if( *(_QWORD *)(v9 + 32) )
      {
        if( v9 )
        {
          *(_BYTE *)(v9 + 32) |= 2u;
          if( *(__int64 *)(v9 + 32) < 0 )
            KiAbEntryRemoveFromTree(v9);
          v10 = *(_DWORD *)(v9 + 88) & 0x1FFFF;
          v11 = *(_DWORD *)(v9 + 88) & 0xFFFE0000;
          *(_BYTE *)(v9 + 25) &= ~1u;
          v14 = v10;
          *(_DWORD *)(v9 + 88) = v11;
          *(_QWORD *)(v9 + 32) = 0i64;
          v12 = (__int64)(v9 - *((_QWORD *)v3 + 100)) / 96;
          if( v5 == 1 )
            *((_BYTE *)v3 + 792) |= 1 << v12;
          else
            _InterlockedOr8((volatile signed __int8 *)v3 + 870, 1 << v12);
          goto LABEL_17;
        }
        break;
      }
    }
  }
  if( (*((_DWORD *)v3 + 30) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, (ULONG_PTR)v3, (ULONG_PTR)&KsepShimDbLock, SessionId, 0i64);
LABEL_17:
  --*((_BYTE *)v3 + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)v3, (__int64)&KsepShimDbLock, (unsigned int *)&v14);
  v7 = (*((_WORD *)v3 + 243))++ == 0xFFFF;
  if( v7 && *((_ETHREAD **)v3 + 19) != (_ETHREAD *)((char *)v3 + 152) )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegionThread((__int64)KeGetCurrentThread());
  return v1;
}

Referenced by: