reactos/subsystems/win32/csrss/csrss.c

   1 /*
   2  * LICENSE:         BSD - See COPYING.ARM in root directory
   3  * PROJECT:         ReactOS Client/Server Runtime SubSystem
   4  * FILE:            subsystems/win32/csrss/csrss.c
   5  * PURPOSE:         CSRSS Process Main Executable Code
   6  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
   7  *                  ReactOS Portable Systems Group
   8  */
   9
  10 /* INCLUDES *******************************************************************/
  11
  12 #define NTOS_MODE_USER
  13 #include <ndk/psfuncs.h>
  14 #include <ndk/rtlfuncs.h>
  15
  16 #include <csr/csrsrv.h>
  17
  18 #define NDEBUG
  19 #include <debug.h>
  20
  21 /* FUNCTIONS ******************************************************************/
  22
  23 VOID
  24 NTAPI
  25 CsrpSetDefaultProcessHardErrorMode(VOID)
  26 {
  27     ULONG DefaultHardErrorMode = 0;
  28
  29     /* Disable hard errors */
  30     NtSetInformationProcess(NtCurrentProcess(),
  31                             ProcessDefaultHardErrorMode,
  32                             &DefaultHardErrorMode,
  33                             sizeof(DefaultHardErrorMode));
  34 }
  35
  36 int
  37 _cdecl
  38 _main(int argc,
  39       char *argv[],
  40       char *envp[],
  41       int DebugFlag)
  42 {
  43     KPRIORITY BasePriority = (8 + 1) + 4;
  44     NTSTATUS Status;
  45     //ULONG Response; // see the #if 0
  46     UNREFERENCED_PARAMETER(envp);
  47     UNREFERENCED_PARAMETER(DebugFlag);
  48
  49     /* Set the Priority */
  50     NtSetInformationProcess(NtCurrentProcess(),
  51                             ProcessBasePriority,
  52                             &BasePriority,
  53                             sizeof(KPRIORITY));
  54
  55     /* Give us IOPL so that we can access the VGA registers */
  56     Status = NtSetInformationProcess(NtCurrentProcess(),
  57                                      ProcessUserModeIOPL,
  58                                      NULL,
  59                                      0);
  60     if (!NT_SUCCESS(Status))
  61     {
  62         /* Raise a hard error */
  63         DPRINT1("CSRSS: Could not raise IOPL, Status: 0x%08lx\n", Status);
  64 #if 0
  65         Status = NtRaiseHardError(STATUS_IO_PRIVILEGE_FAILED,
  66                                   0,
  67                                   0,
  68                                   NULL,
  69                                   OptionOk,
  70                                   &Response);
  71 #endif
  72     }
  73
  74     /* Initialize CSR through CSRSRV */
  75     Status = CsrServerInitialization(argc, argv);
  76     if (!NT_SUCCESS(Status))
  77     {
  78         /* Kill us */
  79         DPRINT1("CSRSS: Unable to initialize server, Status: 0x%08lx\n", Status);
  80         NtTerminateProcess(NtCurrentProcess(), Status);
  81     }
  82
  83     /* Disable errors */
  84     CsrpSetDefaultProcessHardErrorMode();
  85
  86     /* If this is Session 0, make sure killing us bugchecks the system */
  87     if (NtCurrentPeb()->SessionId == 0) RtlSetProcessIsCritical(TRUE, NULL, FALSE);
  88
  89     /* Kill this thread. CSRSRV keeps us going */
  90     NtTerminateThread(NtCurrentThread(), Status);
  91     return 0;
  92 }
  93
  94 /* EOF */