subsystems/csr/main.c

   1 /* $Id$
   2  * --------------------------------------------------------------------
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program 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
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * --------------------------------------------------------------------
  19  */
  20 /*
  21  * COPYRIGHT:       See COPYING in the top level directory
  22  * PROJECT:         ReactOS CSR Sub System
  23  * FILE:            subsys/csr/csrss.c
  24  * PURPOSE:         CSR Executable
  25  * PROGRAMMERS:     Alex Ionescu (alex@relsoft.net)
  26  */
  27
  28 /* INCLUDES ******************************************************************/
  29
  30 #define WIN32_NO_STATUS
  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     UNREFERENCED_PARAMETER(envp);
  71     UNREFERENCED_PARAMETER(DebugFlag);
  72
  73
  74     /* Set the Priority */
  75     NtSetInformationProcess(NtCurrentProcess(),
  76                             ProcessBasePriority,
  77                             &BasePriority,
  78                             sizeof(KPRIORITY));
  79
  80     /* Give us IOPL so that we can access the VGA registers */
  81     Status = NtSetInformationProcess(NtCurrentProcess(),
  82                                      ProcessUserModeIOPL,
  83                                      NULL,
  84                                      0);
  85     if (!NT_SUCCESS(Status))
  86     {
  87         /* Raise a hard error */
  88         DPRINT1("CSRSS: Could not raise IOPL: %x\n", Status);
  89         Status = NtRaiseHardError(STATUS_IO_PRIVILEGE_FAILED,
  90                                   0,
  91                                   0,
  92                                   NULL,
  93                                   OptionOk,
  94                                   &Response);
  95     }
  96
  97     /* Initialize CSR through CSRSRV */
  98     Status = CsrServerInitialization(argc, argv);
  99     if (!NT_SUCCESS(Status))
 100     {
 101         /* Kill us */
 102         DPRINT1("CSRSS: CsrServerInitialization failed:% lx\n", Status);
 103         NtTerminateProcess (NtCurrentProcess(), Status);
 104     }
 105
 106     /* Disable errors */
 107     CsrpSetDefaultProcessHardErrorMode();
 108
 109     /* If this is Session 0, make sure killing us bugchecks the system */
 110     if (!NtCurrentPeb()->SessionId) RtlSetProcessIsCritical(TRUE, NULL, FALSE);
 111
 112     /* Kill this thread. CSRSRV keeps us going */
 113     NtTerminateThread (NtCurrentThread(), Status);
 114     return 0;
 115 }
 116
 117 /* EOF */