reactos/subsys/smss/initss.c

   1 /* $Id: init.c 13449 2005-02-06 21:55:07Z ea $
   2  *
   3  * initss.c - Load the subsystems
   4  *
   5  * ReactOS Operating System
   6  *
   7  * --------------------------------------------------------------------
   8  *
   9  * This software is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * This software is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this software; see the file COPYING.LIB. If not, write
  21  * to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
  22  * MA 02139, USA.
  23  *
  24  * --------------------------------------------------------------------
  25  */
  26
  27
  28 #include "smss.h"
  29
  30 #include <rosrtl/string.h>
  31
  32 #define NDEBUG
  33 #include <debug.h>
  34
  35 /* SM handle for its own \SmApiPort */
  36 HANDLE hSmApiPort = (HANDLE) 0;
  37
  38
  39 /* TODO:
  40  *
  41  * a) look if a special option is set for smss.exe in
  42  *    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
  43  */
  44
  45 /**********************************************************************
  46  *      SmpRegisterSmss/0
  47  *
  48  * DESCRIPTION
  49  *      Make smss register with itself for IMAGE_SUBSYSTEM_NATIVE
  50  *      (programmatically). This also opens hSmApiPort to be used
  51  *      in loading required subsystems.
  52  */
  53
  54 static NTSTATUS
  55 SmpRegisterSmss(VOID)
  56 {
  57         NTSTATUS Status = STATUS_SUCCESS;
  58         UNICODE_STRING SbApiPortName = {0,0,NULL};
  59
  60
  61         DPRINT("SM: %s called\n",__FUNCTION__);
  62
  63         RtlInitUnicodeString (& SbApiPortName, L"");
  64         Status = SmConnectApiPort(& SbApiPortName,
  65                                   (HANDLE) -1, /* SM has no SB port */
  66                                   IMAGE_SUBSYSTEM_NATIVE,
  67                                   & hSmApiPort);
  68         if(!NT_SUCCESS(Status))
  69         {
  70                 DPRINT("SM: %s: SMLIB!SmConnectApiPort failed (Status=0x%08lx)\n",
  71                         __FUNCTION__,Status);
  72                 return Status;
  73         }
  74         DPRINT("SM self registered\n");
  75         /*
  76          * Note that you don't need to call complete session
  77          * because connection handling code autocompletes
  78          * the client structure for IMAGE_SUBSYSTEM_NATIVE.
  79          */
  80         return Status;
  81 }
  82
  83
  84 /**********************************************************************
  85  *      SmpLoadKernelModeSubsystem/0
  86  */
  87 static NTSTATUS
  88 SmpLoadKernelModeSubsystem (VOID)
  89 {
  90         NTSTATUS  Status = STATUS_SUCCESS;
  91         WCHAR     Data [MAX_PATH + 1];
  92         ULONG     DataLength = sizeof Data;
  93         ULONG     DataType = 0;
  94
  95
  96         DPRINT("SM: %s called\n", __FUNCTION__);
  97
  98         Status = SmLookupSubsystem (L"Kmode",
  99                                     Data,
 100                                     & DataLength,
 101                                     & DataType,
 102                                     TRUE);
 103         if((STATUS_SUCCESS == Status) && (DataLength > sizeof Data[0]))
 104         {
 105                 WCHAR                      ImagePath [MAX_PATH + 1] = {0};
 106                 SYSTEM_LOAD_AND_CALL_IMAGE ImageInfo;
 107
 108                 wcscpy (ImagePath, L"\\??\\");
 109                 wcscat (ImagePath, Data);
 110                 RtlZeroMemory (& ImageInfo, sizeof ImageInfo);
 111                 RtlInitUnicodeString (& ImageInfo.ModuleName, ImagePath);
 112                 Status = NtSetSystemInformation(SystemLoadAndCallImage,
 113                                                 & ImageInfo,
 114                                                 sizeof ImageInfo);
 115                 if(!NT_SUCCESS(Status))
 116                 {
 117                         DPRINT("SM: %s: loading Kmode failed (Status=0x%08lx)\n",
 118                                 __FUNCTION__, Status);
 119                 }
 120         }
 121         return Status;
 122 }
 123
 124 /**********************************************************************
 125  *      SmpLoadRequiredSubsystems/0
 126  */
 127 static NTSTATUS
 128 SmpLoadRequiredSubsystems (VOID)
 129 {
 130         NTSTATUS  Status = STATUS_SUCCESS;
 131         WCHAR     Data [MAX_PATH + 1];
 132         ULONG     DataLength = sizeof Data;
 133         ULONG     DataType = 0;
 134
 135
 136         DPRINT("SM: %s called\n", __FUNCTION__);
 137
 138         RtlZeroMemory (Data, DataLength);
 139         Status = SmLookupSubsystem (L"Required",
 140                                     Data,
 141                                     & DataLength,
 142                                     & DataType,
 143                                     FALSE);
 144         if((STATUS_SUCCESS == Status) && (DataLength > sizeof Data[0]))
 145         {
 146                 PWCHAR Name = NULL;
 147                 ULONG Offset = 0;
 148
 149                 for (Name = Data; (Offset < DataLength); )
 150                 {
 151                         if(L'\0' != *Name)
 152                         {
 153                                 UNICODE_STRING Program;
 154
 155                                 /* Run the current program */
 156                                 RtlInitUnicodeString (& Program, Name);
 157                                 Status = SmExecuteProgram (hSmApiPort, & Program);
 158                                 if(!NT_SUCCESS(Status))
 159                                 {
 160                                         DPRINT1("SM: %s failed to run '%S' program (Status=0x%08lx)\n",
 161                                                 __FUNCTION__, Name, Status);
 162                                 }
 163                                 /* Look for the next program */
 164                                 while ((L'\0' != *Name) && (Offset < DataLength))
 165                                 {
 166                                         ++ Name;
 167                                         ++ Offset;
 168                                 }
 169                         }
 170                         ++ Name;
 171                         ++ Offset;
 172                 }
 173         }
 174
 175         return Status;
 176 }
 177
 178 /**********************************************************************
 179  *      SmLoadSubsystems/0
 180  */
 181 NTSTATUS
 182 SmLoadSubsystems(VOID)
 183 {
 184         NTSTATUS  Status = STATUS_SUCCESS;
 185
 186
 187         DPRINT("SM: loading subsystems\n");
 188
 189         /* SM self registers */
 190         Status = SmpRegisterSmss();
 191         if(!NT_SUCCESS(Status)) return Status;
 192         /* Load Kmode subsystem (aka win32k.sys) */
 193         Status = SmpLoadKernelModeSubsystem();
 194         if(!NT_SUCCESS(Status)) return Status;
 195         /* Load Required subsystems (Debug Windows) */
 196         Status = SmpLoadRequiredSubsystems();
 197         if(!NT_SUCCESS(Status)) return Status;
 198         /* done */
 199         return Status;
 200 }
 201
 202 /* EOF */