reactos/subsystems/csr/main.c

   1 /* $Id$
   2  * --------------------------------------------------------------------
   3  *
   4  * This software is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This software is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this software; see the file COPYING.LIB. If not, write
  16  * to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
  17  * MA 02139, USA.
  18  *
  19  * --------------------------------------------------------------------
  20  */
  21 /*
  22  * COPYRIGHT:       See COPYING in the top level directory
  23  * PROJECT:         ReactOS CSR Sub System
  24  * FILE:            subsys/csr/csrss.c
  25  * PURPOSE:         CSR Executable
  26  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
  27  */
  28
  29 /* INCLUDES ******************************************************************/
  30
  31 #include <windows.h>
  32 #define NTOS_MODE_USER
  33 #include <ndk/ntndk.h>
  34 #include <csr/server.h>
  35
  36 #define NDEBUG
  37 #include <debug.h>
  38
  39 /* PRIVATE FUNCTIONS *********************************************************/
  40
  41 VOID
  42 NTAPI
  43 CsrpSetDefaultProcessHardErrorMode (VOID)
  44 {
  45     ULONG DefaultHardErrorMode = 0;
  46
  47     /* Disable hard errors */
  48     NtSetInformationProcess(NtCurrentProcess(),
  49                             ProcessDefaultHardErrorMode,
  50                             &DefaultHardErrorMode,
  51                             sizeof(DefaultHardErrorMode));
  52 }
  53
  54 /*
  55  * Note: Standard entrypoint for Native C Programs.
  56  * The OS backend (NtProcessStartup) which calls this routine is
  57  * implemented in a CRT-like static library (much like mainCRTStartup).
  58  * Do NOT manually add the NtProcessStartup entrypoint or anything else.
  59  */
  60 int
  61 _cdecl
  62 _main(int argc,
  63       char *argv[],
  64       char *envp[],
  65       int DebugFlag)
  66 {
  67     KPRIORITY BasePriority = (8 + 1) + 4;
  68     NTSTATUS Status;
  69     ULONG Response;
  70
  71     /* Set the Priority */
  72     NtSetInformationProcess(NtCurrentProcess(),
  73                             ProcessBasePriority,
  74                             &BasePriority,
  75                             sizeof(KPRIORITY));
  76
  77     /* Give us IOPL so that we can access the VGA registers */
  78     Status = NtSetInformationProcess(NtCurrentProcess(),
  79                                      ProcessUserModeIOPL,
  80                                      NULL,
  81                                      0);
  82     if (NT_SUCCESS(Status))
  83     {
  84         /* Raise a hard error */
  85         DPRINT1("CSRSS: Could not raise IOPL: %x\n", Status);
  86         Status = NtRaiseHardError(STATUS_IO_PRIVILEGE_FAILED,
  87                                   0,
  88                                   0,
  89                                   NULL,
  90                                   OptionOk,
  91                                   &Response);
  92     }
  93
  94     /* Initialize CSR through CSRSRV */
  95     Status = CsrServerInitialization(argc, argv);
  96     if (!NT_SUCCESS(Status))
  97     {
  98         /* Kill us */
  99         DPRINT1("CSRSS: CsrServerInitialization failed:% lx\n", Status);
 100         NtTerminateProcess (NtCurrentProcess(), Status);
 101     }
 102
 103     /* Disable errors */
 104     CsrpSetDefaultProcessHardErrorMode();
 105
 106     /* If this is Session 0, make sure killing us bugchecks the system */
 107     if (!NtCurrentPeb()->SessionId) RtlSetProcessIsCritical(TRUE, NULL, FALSE);
 108
 109     /* Kill this thread. CSRSRV keeps us going */
 110     NtTerminateThread (NtCurrentThread(), Status);
 111     return 0;
 112 }
 113
 114 /* EOF */