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![Eric Kohl](/assets/img/avatar_default.png)
- Flush the new control set after the control set has been created. - Make sure that we create a new control set only on the first boot after setup. - Move the control set copy code to a separate function. - Get rid of the global control set values.
517 lines
15 KiB
C
517 lines
15 KiB
C
/*
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* PROJECT: ReactOS Service Control Manager
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: base/system/services/controlset.c
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* PURPOSE: Control Set Management
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* COPYRIGHT: Copyright 2012 Eric Kohl
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*
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*/
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/* INCLUDES *****************************************************************/
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#include "services.h"
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#define NDEBUG
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#include <debug.h>
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/* GLOBALS *******************************************************************/
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/* FUNCTIONS *****************************************************************/
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#if (_WIN32_WINNT < 0x0600)
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static
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DWORD
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ScmCopyTree(
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HKEY hSrcKey,
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HKEY hDstKey)
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{
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FILETIME LastWrite;
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DWORD dwSubKeys;
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DWORD dwValues;
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DWORD dwType;
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DWORD dwMaxSubKeyNameLength;
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DWORD dwSubKeyNameLength;
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DWORD dwMaxValueNameLength;
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DWORD dwValueNameLength;
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DWORD dwMaxValueLength;
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DWORD dwValueLength;
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DWORD dwDisposition;
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DWORD i;
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LPWSTR lpNameBuffer;
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LPBYTE lpDataBuffer;
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HKEY hDstSubKey;
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HKEY hSrcSubKey;
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DWORD dwError;
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DPRINT("ScmCopyTree()\n");
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dwError = RegQueryInfoKey(hSrcKey,
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NULL,
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NULL,
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NULL,
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&dwSubKeys,
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&dwMaxSubKeyNameLength,
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NULL,
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&dwValues,
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&dwMaxValueNameLength,
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&dwMaxValueLength,
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NULL,
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NULL);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("RegQueryInfoKey() failed (Error %lu)\n", dwError);
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return dwError;
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}
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dwMaxSubKeyNameLength++;
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dwMaxValueNameLength++;
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DPRINT("dwSubKeys %lu\n", dwSubKeys);
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DPRINT("dwMaxSubKeyNameLength %lu\n", dwMaxSubKeyNameLength);
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DPRINT("dwValues %lu\n", dwValues);
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DPRINT("dwMaxValueNameLength %lu\n", dwMaxValueNameLength);
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DPRINT("dwMaxValueLength %lu\n", dwMaxValueLength);
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/* Copy subkeys */
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if (dwSubKeys != 0)
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{
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lpNameBuffer = HeapAlloc(GetProcessHeap(),
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0,
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dwMaxSubKeyNameLength * sizeof(WCHAR));
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if (lpNameBuffer == NULL)
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{
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DPRINT1("Buffer allocation failed\n");
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return ERROR_NOT_ENOUGH_MEMORY;
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}
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for (i = 0; i < dwSubKeys; i++)
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{
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dwSubKeyNameLength = dwMaxSubKeyNameLength;
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dwError = RegEnumKeyExW(hSrcKey,
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i,
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lpNameBuffer,
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&dwSubKeyNameLength,
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NULL,
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NULL,
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NULL,
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&LastWrite);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Subkey enumeration failed (Error %lu)\n", dwError);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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dwError = RegCreateKeyExW(hDstKey,
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lpNameBuffer,
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0,
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NULL,
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REG_OPTION_NON_VOLATILE,
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KEY_WRITE,
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NULL,
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&hDstSubKey,
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&dwDisposition);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Subkey creation failed (Error %lu)\n", dwError);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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dwError = RegOpenKeyExW(hSrcKey,
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lpNameBuffer,
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0,
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KEY_READ,
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&hSrcSubKey);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Error: %lu\n", dwError);
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RegCloseKey(hDstSubKey);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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dwError = ScmCopyTree(hSrcSubKey,
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hDstSubKey);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Error: %lu\n", dwError);
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RegCloseKey (hSrcSubKey);
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RegCloseKey (hDstSubKey);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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RegCloseKey(hSrcSubKey);
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RegCloseKey(hDstSubKey);
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}
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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}
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/* Copy values */
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if (dwValues != 0)
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{
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lpNameBuffer = HeapAlloc(GetProcessHeap(),
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0,
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dwMaxValueNameLength * sizeof(WCHAR));
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if (lpNameBuffer == NULL)
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{
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DPRINT1("Buffer allocation failed\n");
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return ERROR_NOT_ENOUGH_MEMORY;
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}
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lpDataBuffer = HeapAlloc(GetProcessHeap(),
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0,
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dwMaxValueLength);
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if (lpDataBuffer == NULL)
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{
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DPRINT1("Buffer allocation failed\n");
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return ERROR_NOT_ENOUGH_MEMORY;
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}
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for (i = 0; i < dwValues; i++)
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{
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dwValueNameLength = dwMaxValueNameLength;
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dwValueLength = dwMaxValueLength;
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dwError = RegEnumValueW(hSrcKey,
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i,
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lpNameBuffer,
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&dwValueNameLength,
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NULL,
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&dwType,
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lpDataBuffer,
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&dwValueLength);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Error: %lu\n", dwError);
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HeapFree(GetProcessHeap(),
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0,
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lpDataBuffer);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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dwError = RegSetValueExW(hDstKey,
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lpNameBuffer,
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0,
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dwType,
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lpDataBuffer,
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dwValueLength);
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if (dwError != ERROR_SUCCESS)
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{
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DPRINT1("Error: %lu\n", dwError);
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HeapFree(GetProcessHeap(),
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0,
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lpDataBuffer);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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return dwError;
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}
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}
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HeapFree(GetProcessHeap(),
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0,
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lpDataBuffer);
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HeapFree(GetProcessHeap(),
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0,
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lpNameBuffer);
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}
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DPRINT("ScmCopyTree() done \n");
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return ERROR_SUCCESS;
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}
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#endif
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static
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DWORD
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ScmGetControlSetValues(
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PDWORD pdwCurrentControlSet,
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PDWORD pdwDefaultControlSet,
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PDWORD pdwFailedControlSet,
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PDWORD pdwLastKnownGoodControlSet)
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{
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HKEY hSelectKey;
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DWORD dwType;
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DWORD dwSize;
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DWORD dwError;
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DPRINT("ScmGetControlSetValues() called\n");
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dwError = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"System\\Select",
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0,
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KEY_READ,
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&hSelectKey);
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if (dwError != ERROR_SUCCESS)
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return dwError;
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dwSize = sizeof(DWORD);
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dwError = RegQueryValueExW(hSelectKey,
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L"Current",
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0,
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&dwType,
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(LPBYTE)pdwCurrentControlSet,
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&dwSize);
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if (dwError != ERROR_SUCCESS)
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{
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*pdwCurrentControlSet = 0;
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}
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dwSize = sizeof(DWORD);
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dwError = RegQueryValueExW(hSelectKey,
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L"Default",
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0,
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&dwType,
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(LPBYTE)pdwDefaultControlSet,
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&dwSize);
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if (dwError != ERROR_SUCCESS)
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{
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*pdwDefaultControlSet = 0;
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}
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dwSize = sizeof(DWORD);
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dwError = RegQueryValueExW(hSelectKey,
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L"Failed",
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0,
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&dwType,
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(LPBYTE)pdwFailedControlSet,
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&dwSize);
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if (dwError != ERROR_SUCCESS)
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{
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*pdwFailedControlSet = 0;
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}
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dwSize = sizeof(DWORD);
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dwError = RegQueryValueExW(hSelectKey,
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L"LastKnownGood",
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0,
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&dwType,
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(LPBYTE)pdwLastKnownGoodControlSet,
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&dwSize);
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if (dwError != ERROR_SUCCESS)
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{
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*pdwLastKnownGoodControlSet = 0;
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}
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RegCloseKey(hSelectKey);
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DPRINT("ControlSets:\n");
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DPRINT("Current: %lu\n", *pdwCurrentControlSet);
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DPRINT("Default: %lu\n", *pdwDefaultControlSet);
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DPRINT("Failed: %lu\n", *pdwFailedControlSet);
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DPRINT("LastKnownGood: %lu\n", *pdwLastKnownGoodControlSet);
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return dwError;
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}
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static
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DWORD
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ScmSetLastKnownGoodControlSet(
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DWORD dwControlSet)
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{
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HKEY hSelectKey;
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DWORD dwError;
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dwError = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"System\\Select",
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0,
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KEY_WRITE,
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&hSelectKey);
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if (dwError != ERROR_SUCCESS)
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return dwError;
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dwError = RegSetValueExW(hSelectKey,
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L"LastKnownGood",
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0,
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REG_DWORD,
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(LPBYTE)&dwControlSet,
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sizeof(dwControlSet));
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RegFlushKey(hSelectKey);
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RegCloseKey(hSelectKey);
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return dwError;
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}
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static
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DWORD
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ScmGetSetupInProgress(VOID)
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{
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DWORD dwError;
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HKEY hKey;
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DWORD dwType;
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DWORD dwSize;
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DWORD dwSetupInProgress = (DWORD)-1;
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DPRINT("ScmGetSetupInProgress()\n");
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/* Open key */
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dwError = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"SYSTEM\\Setup",
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0,
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KEY_QUERY_VALUE,
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&hKey);
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if (dwError == ERROR_SUCCESS)
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{
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/* Read key */
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dwSize = sizeof(DWORD);
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RegQueryValueExW(hKey,
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L"SystemSetupInProgress",
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NULL,
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&dwType,
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(LPBYTE)&dwSetupInProgress,
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&dwSize);
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RegCloseKey(hKey);
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}
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DPRINT("SetupInProgress: %lu\n", dwSetupInProgress);
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return dwSetupInProgress;
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}
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static
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DWORD
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ScmCopyControlSet(
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DWORD dwSourceControlSet,
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DWORD dwDestinationControlSet)
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{
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WCHAR szSourceControlSetName[32];
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WCHAR szDestinationControlSetName[32];
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HKEY hSourceControlSetKey = NULL;
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HKEY hDestinationControlSetKey = NULL;
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DWORD dwDisposition;
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DWORD dwError;
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/* Create the source control set name */
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swprintf(szSourceControlSetName, L"SYSTEM\\ControlSet%03lu", dwSourceControlSet);
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DPRINT("Source control set: %S\n", szSourceControlSetName);
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/* Create the destination control set name */
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swprintf(szDestinationControlSetName, L"SYSTEM\\ControlSet%03lu", dwDestinationControlSet);
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DPRINT("Destination control set: %S\n", szDestinationControlSetName);
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/* Open the source control set key */
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dwError = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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szSourceControlSetName,
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0,
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KEY_READ,
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&hSourceControlSetKey);
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if (dwError != ERROR_SUCCESS)
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goto done;
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/* Create the destination control set key */
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dwError = RegCreateKeyExW(HKEY_LOCAL_MACHINE,
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szDestinationControlSetName,
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0,
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NULL,
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REG_OPTION_NON_VOLATILE,
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KEY_WRITE,
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NULL,
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&hDestinationControlSetKey,
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&dwDisposition);
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if (dwError != ERROR_SUCCESS)
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goto done;
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/* Copy the source control set to the destination control set */
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#if (_WIN32_WINNT >= 0x0600)
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dwError = RegCopyTreeW(hSourceControlSetKey,
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NULL,
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hDestinationControlSetKey);
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#else
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dwError = ScmCopyTree(hSourceControlSetKey,
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hDestinationControlSetKey);
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#endif
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if (dwError != ERROR_SUCCESS)
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goto done;
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RegFlushKey(hDestinationControlSetKey);
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done:
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if (hDestinationControlSetKey != NULL)
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RegCloseKey(hDestinationControlSetKey);
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if (hSourceControlSetKey != NULL)
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RegCloseKey(hSourceControlSetKey);
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return dwError;
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}
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DWORD
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ScmCreateLastKnownGoodControlSet(VOID)
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{
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DWORD dwCurrentControlSet, dwDefaultControlSet;
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DWORD dwFailedControlSet, dwLastKnownGoodControlSet;
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DWORD dwNewControlSet;
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DWORD dwError;
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/* Get the control set values */
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dwError = ScmGetControlSetValues(&dwCurrentControlSet,
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&dwDefaultControlSet,
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&dwFailedControlSet,
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&dwLastKnownGoodControlSet);
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if (dwError != ERROR_SUCCESS)
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return dwError;
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/* First boot after setup? */
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if ((ScmGetSetupInProgress() == 0) &&
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(dwCurrentControlSet == dwLastKnownGoodControlSet))
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{
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DPRINT("First boot after setup!\n");
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/* Search for a new control set number */
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for (dwNewControlSet = 1; dwNewControlSet < 1000; dwNewControlSet++)
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{
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if ((dwNewControlSet != dwCurrentControlSet) &&
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(dwNewControlSet != dwDefaultControlSet) &&
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(dwNewControlSet != dwFailedControlSet) &&
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(dwNewControlSet != dwLastKnownGoodControlSet))
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break;
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}
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/* Fail if we did not find an unused control set!*/
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if (dwNewControlSet >= 1000)
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{
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DPRINT1("Too many control sets!\n");
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return ERROR_NO_MORE_ITEMS;
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}
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/* Copy the current control set */
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dwError = ScmCopyControlSet(dwCurrentControlSet,
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dwNewControlSet);
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if (dwError != ERROR_SUCCESS)
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return dwError;
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/* Set the new 'LastKnownGood' control set */
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dwError = ScmSetLastKnownGoodControlSet(dwNewControlSet);
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}
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return dwError;
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}
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/* EOF */
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