subsystems/win32/csrss/csrss.c

   1 /*
   2  * PROJECT:         ReactOS Client Server Runtime SubSystem (CSRSS)
   3  * LICENSE:         BSD - See COPYING.ARM in root directory
   4  * FILE:            subsystems/win32/csrss/csrss.c
   5  * PURPOSE:         CSRSS Main Executable Code
   6  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
   7  *                  ReactOS Portable Systems Group
   8  */
   9
  10 /* INCLUDES *******************************************************************/
  11
  12 #define WIN32_NO_STATUS
  13 #include <windows.h>
  14 #define NTOS_MODE_USER
  15 #include <ndk/ntndk.h>
  16
  17 #include <csr/csrsrv.h>
  18
  19 #define NDEBUG
  20 #include <debug.h>
  21
  22 /* FUNCTIONS ******************************************************************/
  23
  24 VOID
  25 NTAPI
  26 CsrpSetDefaultProcessHardErrorMode(VOID)
  27 {
  28     ULONG DefaultHardErrorMode = 0;
  29
  30     /* Disable hard errors */
  31     NtSetInformationProcess(NtCurrentProcess(),
  32                             ProcessDefaultHardErrorMode,
  33                             &DefaultHardErrorMode,
  34                             sizeof(DefaultHardErrorMode));
  35 }
  36
  37 int
  38 _cdecl
  39 _main(int argc,
  40       char *argv[],
  41       char *envp[],
  42       int DebugFlag)
  43 {
  44     KPRIORITY BasePriority = (8 + 1) + 4;
  45     NTSTATUS Status;
  46     //ULONG Response; // see the #if 0
  47     UNREFERENCED_PARAMETER(envp);
  48     UNREFERENCED_PARAMETER(DebugFlag);
  49
  50     /* Set the Priority */
  51     NtSetInformationProcess(NtCurrentProcess(),
  52                             ProcessBasePriority,
  53                             &BasePriority,
  54                             sizeof(KPRIORITY));
  55
  56     /* Give us IOPL so that we can access the VGA registers */
  57     Status = NtSetInformationProcess(NtCurrentProcess(),
  58                                      ProcessUserModeIOPL,
  59                                      NULL,
  60                                      0);
  61     if (!NT_SUCCESS(Status))
  62     {
  63         /* Raise a hard error */
  64         DPRINT1("CSRSS: Could not raise IOPL: %x\n", Status);
  65 #if 0
  66         Status = NtRaiseHardError(STATUS_IO_PRIVILEGE_FAILED,
  67                                   0,
  68                                   0,
  69                                   NULL,
  70                                   OptionOk,
  71                                   &Response);
  72 #endif
  73     }
  74
  75     /* Initialize CSR through CSRSRV */
  76     Status = CsrServerInitialization(argc, argv);
  77     if (!NT_SUCCESS(Status))
  78     {
  79         /* Kill us */
  80         DPRINT1("CSRSS: CsrServerInitialization failed:% lx\n", Status);
  81         NtTerminateProcess(NtCurrentProcess(), Status);
  82     }
  83
  84     /* Disable errors */
  85     CsrpSetDefaultProcessHardErrorMode();
  86
  87     /* If this is Session 0, make sure killing us bugchecks the system */
  88     if (NtCurrentPeb()->SessionId == 0) RtlSetProcessIsCritical(TRUE, NULL, FALSE);
  89
  90     /* Kill this thread. CSRSRV keeps us going */
  91     NtTerminateThread(NtCurrentThread(), Status);
  92     return 0;
  93 }
  94
  95 /* EOF */