127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
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#include "precomp.h"
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#pragma hdrstop
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extern CHAR ReturnTextBuffer[1024];
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/*
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GetMCABusInformation - Get the real MCA bus number from the data structure.
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The user must passed 3 arguments to the function.
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1st argument - the registry key handle
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2nd argument - registry field name, i.e. "Configuration Data"
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3rd argument - the index of the MCA bus.
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The function will look at the MCA data structure and find out the
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real bus number. If it cannot find the real bus number, it will
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return the index of the MCA bus (which will match the real bus number
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in a single bus machine).
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*/
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BOOL
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GetMCABusInformation(
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IN DWORD cArgs,
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IN LPSTR Args[],
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OUT LPSTR *TextOut
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)
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{
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PCM_FULL_RESOURCE_DESCRIPTOR pFullResourceDescriptor;
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PCM_PARTIAL_RESOURCE_DESCRIPTOR pPartialDescriptor;
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CHAR szNum[10];
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BOOL fOkay;
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HKEY hKey;
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DWORD cbData;
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DWORD ValueType;
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PVOID ValueData;
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LONG Status;
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char szKClass[ MAX_PATH ];
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DWORD cbKClass;
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DWORD KSubKeys;
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DWORD cbKMaxSubKeyLen;
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DWORD cbKMaxClassLen;
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DWORD KValues;
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DWORD cbKMaxValueNameLen;
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DWORD SizeSecurityDescriptor;
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FILETIME KLastWriteTime;
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lstrcpy( ReturnTextBuffer, "{" );
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hKey = (HKEY)LongToHandle(atol( &(Args[0][1])));
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cbKClass = MAX_PATH;
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/*
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** Get the registry handle information
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*/
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fOkay = !( Status = RegQueryInfoKey ( hKey,
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szKClass,
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&cbKClass,
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NULL,
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&KSubKeys,
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&cbKMaxSubKeyLen,
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&cbKMaxClassLen,
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&KValues,
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&cbKMaxValueNameLen,
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&cbData,
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&SizeSecurityDescriptor,
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&KLastWriteTime ) );
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if ( !fOkay ) {
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lstrcat( ReturnTextBuffer, Args[2] );
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lstrcat( ReturnTextBuffer, "}" );
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*TextOut = ReturnTextBuffer;
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OutputDebugString("RegQueryInfoKey error.\n\r");
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return(FALSE);
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} else {
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//
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// Allocate the buffer and get the data
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//
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// add some space for the margin
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while ( (ValueData = (PVOID)SAlloc( (CB)( cbData+10 ))) == NULL ) {
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lstrcat( ReturnTextBuffer, Args[2] );
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lstrcat( ReturnTextBuffer, "}" );
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*TextOut = ReturnTextBuffer;
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OutputDebugString("Malloc error.\n\r");
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return(FALSE);
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}
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if ( fOkay ) {
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fOkay = !( Status = RegQueryValueEx( hKey,
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Args[1],
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NULL,
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&ValueType,
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ValueData,
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&cbData ) );
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if ( !fOkay ) {
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SFree( ValueData );
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lstrcat( ReturnTextBuffer, Args[2] );
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lstrcat( ReturnTextBuffer, "}" );
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*TextOut = ReturnTextBuffer;
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OutputDebugString("RegQueryValueEx error.\n\r");
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return(FALSE);
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}
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}
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}
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// save the bus number and return
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pFullResourceDescriptor = (PCM_FULL_RESOURCE_DESCRIPTOR) ValueData;
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wsprintf(szNum, "\"%d\"", pFullResourceDescriptor->BusNumber);
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lstrcat( ReturnTextBuffer, szNum);
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lstrcat( ReturnTextBuffer, "}" );
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*TextOut = ReturnTextBuffer;
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SFree( ValueData );
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return TRUE;
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}
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