613 lines
15 KiB
C
613 lines
15 KiB
C
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#include "precomp.h"
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#include "devenum.h"
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#define NUMDRIVELETTERS 26
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// drvletter struct.
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typedef struct _DRIVELETTERS {
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BOOL ExistsOnSystem[NUMDRIVELETTERS];
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DWORD Type[NUMDRIVELETTERS]; // Returned from GetDriveType
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TCHAR IdentifierString[NUMDRIVELETTERS][MAX_PATH]; // Varies by Drive type.
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} DRIVELETTERS, *PDRIVELETTERS;
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DRIVELETTERS g_DriveLetters;
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PCTSTR DriveTypeAsString(
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IN UINT Type
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)
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{
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static PCTSTR driveTypeStrings[] = {
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TEXT("DRIVE_UNKNOWN"), //The drive type cannot be determined.
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TEXT("DRIVE_NO_ROOT_DIR"), //The root directory does not exist.
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TEXT("DRIVE_REMOVABLE"), //The disk can be removed from the drive.
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TEXT("DRIVE_FIXED"), //The disk cannot be removed from the drive.
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TEXT("DRIVE_REMOTE"), //The drive is a remote (network) drive.
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TEXT("DRIVE_CDROM"), //The drive is a CD-ROM drive.
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TEXT("DRIVE_RAMDISK"), //The drive is a RAM disk.
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};
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return driveTypeStrings[Type];
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}
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BOOL
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InitializeDriveLetterStructure (
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VOID
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)
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{
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DWORD DriveLettersOnSystem = GetLogicalDrives();
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BYTE bitPosition;
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DWORD maxBitPosition = NUMDRIVELETTERS;
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TCHAR rootPath[4];
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BOOL driveExists;
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UINT type;
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BOOL rf = TRUE;
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//
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//rootPath[0] will be set to the drive letter of interest.
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//
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rootPath[1] = TEXT(':');
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rootPath[2] = TEXT('\\');
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rootPath[3] = TEXT('\0');
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//
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// GetLogicalDrives returns a bitmask of all of the drive letters
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// in use on the system. (i.e. bit position 0 is turned on if there is
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// an 'A' drive, 1 is turned on if there is a 'B' drive, etc.
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// This loop will use this bitmask to fill in the global drive
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// letters structure with information about what drive letters
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// are available and what there drive types are.
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//
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for (bitPosition = 0; bitPosition < maxBitPosition; bitPosition++) {
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//
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// Initialize the entry to safe values.
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//
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g_DriveLetters.Type[bitPosition] = 0;
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g_DriveLetters.ExistsOnSystem[bitPosition] = FALSE;
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*g_DriveLetters.IdentifierString[bitPosition] = 0;
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//
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// Now, determine if there is a drive in this spot.
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//
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driveExists = DriveLettersOnSystem & (1 << bitPosition);
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if (driveExists) {
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//
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// There is. Now, see if it is one that we care about.
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//
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*rootPath = bitPosition + TEXT('A');
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type = GetDriveType(rootPath);
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if (type == DRIVE_FIXED ||
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type == DRIVE_REMOVABLE ||
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type == DRIVE_CDROM) {
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//
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// This is a drive that we are interested in.
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//
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g_DriveLetters.ExistsOnSystem[bitPosition] = driveExists;
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g_DriveLetters.Type[bitPosition] = type;
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//
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// Identifier String is not filled in this function.
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//
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}
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}
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}
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return rf;
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}
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VOID
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CleanUpHardDriveTags (
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VOID
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)
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{
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//
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// User cancelled. We need to clean up the tag files
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// that were created for drive migration.
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//
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UINT i;
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TCHAR path[MAX_PATH];
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lstrcpy(path,TEXT("*:\\"));
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lstrcat(path,TEXT(WINNT_WIN95UPG_DRVLTR_A));
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for (i = 0; i < NUMDRIVELETTERS; i++) {
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if (g_DriveLetters.ExistsOnSystem[i] &&
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g_DriveLetters.Type[i] == DRIVE_FIXED) {
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*path = (TCHAR) i + TEXT('A');
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DeleteFile (path);
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}
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}
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}
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BOOL
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GatherHardDriveInformation (
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VOID
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)
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{
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BOOL rf = TRUE;
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DWORD index;
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HANDLE signatureFile;
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TCHAR signatureFilePath[sizeof (WINNT_WIN95UPG_DRVLTR_A) + 3];
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DWORD signatureFilePathLength;
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DWORD bytesWritten;
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//
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// Hard drive information is actually written to a special signature file
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// on the root directory of each fixed hard drive. The information is nothing special --
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// just the drive number (0 = A, etc.)
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//
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lstrcpy(signatureFilePath,TEXT("*:\\"));
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lstrcat(signatureFilePath,TEXT(WINNT_WIN95UPG_DRVLTR_A));
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signatureFilePathLength = lstrlen(signatureFilePath);
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for (index = 0; index < NUMDRIVELETTERS; index++) {
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if (g_DriveLetters.ExistsOnSystem[index] &&
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g_DriveLetters.Type[index] == DRIVE_FIXED) {
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*signatureFilePath = (TCHAR) index + TEXT('A');
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signatureFile = CreateFile(
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signatureFilePath,
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GENERIC_WRITE | GENERIC_READ,
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0,
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NULL,
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CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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NULL
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);
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if (signatureFile != INVALID_HANDLE_VALUE) {
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WriteFile (signatureFile, &index, sizeof(DWORD), &bytesWritten, NULL);
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CloseHandle (signatureFile);
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SetFileAttributes (signatureFilePath, FILE_ATTRIBUTE_HIDDEN);
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}
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}
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}
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return rf;
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}
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/*BOOL
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GatherCdRomDriveInformation (
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VOID
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)
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{
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BOOL rf = TRUE;
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HKEY scsiKey = NULL;
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HKEY deviceKey = NULL;
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TCHAR classData[25];
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DWORD classDataSize = 25;
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TCHAR targetData[5];
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DWORD targetDataSize = 5;
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TCHAR lunData[5];
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DWORD lunDataSize = 5;
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TCHAR driveLetterData[5];
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DWORD driveLetterSize = 5;
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TCHAR buffer [4096];
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DWORD subKeyLength;
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DWORD tempLength;
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HKEY locationKey = NULL;
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PTSTR locationName;
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DWORD outerIndex;
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DWORD enumReturn;
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DWORD port;
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DWORD unusedType;
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DWORD error;
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//
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// Walk the SCSI tree looking for CD rom devices.
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//
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error = RegOpenKeyEx (HKEY_LOCAL_MACHINE, TEXT("ENUM\\SCSI"), 0, KEY_READ, &scsiKey);
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if (error) {
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return TRUE;
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}
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//
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// Gather information about the key in preparation for enumerating
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// it.
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//
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error = RegQueryInfoKey (
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scsiKey,
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NULL, // Don't care about the class.
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NULL, // class size.
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NULL, // reserved.
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NULL, // Don't care about the number of subkeys.
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&subKeyLength,
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NULL, // Don't care about subclasses.
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NULL, // Don't care about values.
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NULL, // Don't care about max value name length.
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NULL, // Don't care about max component.
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NULL, // Don't care about the security descriptor.
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NULL // Don't care about the last write time.
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);
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if (error) {
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//
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// This should really not happen.
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//
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return FALSE;
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}
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//
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// Succssesfully opened a key to HKLM\Enum\SCSI. Enumerate it.
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//
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outerIndex = 0;
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do {
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if (locationKey) {
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RegCloseKey (locationKey);
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locationKey = NULL;
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}
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if (deviceKey) {
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RegCloseKey (deviceKey);
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deviceKey = NULL;
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}
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tempLength = sizeof(buffer) / sizeof(TCHAR);
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enumReturn = RegEnumKeyEx (
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scsiKey,
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outerIndex,
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buffer,
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&tempLength,
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0, // Reserved
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NULL, // Class name - not necessary.
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NULL, // size of class name buffer.
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NULL
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);
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outerIndex++;
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//
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// For each returned key, look up the "Class" value.
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//
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error = RegOpenKeyEx (scsiKey,buffer,0,KEY_READ,&deviceKey);
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if (error) {
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//
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// Something is hosed. Give up on collecting SCSI data.
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//
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rf = FALSE;
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break;
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}
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//
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// The port has to be decoded from the key one level
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// below.
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//
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tempLength = sizeof (buffer) / sizeof(TCHAR);
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error = RegEnumKeyEx (
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deviceKey,
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0,
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buffer,
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&tempLength,
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0, // Reserved
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NULL, // Class name - not necessary.
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NULL, // size of class name buffer.
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NULL
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);
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error = RegOpenKeyEx (deviceKey, buffer, 0, KEY_READ, &locationKey);
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if (error) {
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//
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// This should really never happen. However, guard against it.
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// Its not serious enough to abort the search. Just skip this
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// particular key and continue.
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//
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continue;
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}
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tempLength = classDataSize;
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error = RegQueryValueEx(
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locationKey,
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TEXT("CLASS"),
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0,
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&unusedType,
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(PBYTE) classData,
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&tempLength
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);
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if (error) {
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//
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// This isn't a serious enough error to bring down the whole
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// enumeration. Just note it in the logs and continue to the
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// next key.
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//
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continue;
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}
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if (!lstrcmpi(classData, TEXT("CDROM"))) {
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lstrcpy (targetData, TEXT("-1"));
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lstrcpy (lunData, TEXT("-1"));
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lstrcpy (driveLetterData, TEXT("%"));
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//
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// Found a CdRom. Get the information that will be used in
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// textmode setup to identify the drive.
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//
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tempLength = targetDataSize;
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RegQueryValueEx(
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locationKey,
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TEXT("ScsiTargetId"),
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0,
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&unusedType,
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(PBYTE) targetData,
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&tempLength
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);
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tempLength = lunDataSize;
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RegQueryValueEx(
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locationKey,
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TEXT("ScsiLun"),
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0,
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&unusedType,
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(PBYTE) lunData,
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&tempLength
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);
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tempLength = driveLetterSize;
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RegQueryValueEx(
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locationKey,
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TEXT("CurrentDriveLetterAssignment"),
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0,
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&unusedType,
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(PBYTE) driveLetterData,
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&tempLength
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);
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if (*driveLetterData != TEXT('%')) {
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//
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// At this point, we have all of the information
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// necessary to write a SCSI CdRom identifier
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// string.
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//
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wsprintf(g_DriveLetters.IdentifierString[*driveLetterData - TEXT('A')], TEXT("%u^%s^%s"), 1, targetData, lunData);
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}
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}
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if (locationKey) {
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RegCloseKey (locationKey);
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locationKey = NULL;
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}
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if (deviceKey) {
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RegCloseKey (deviceKey);
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deviceKey = NULL;
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}
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||
|
|
|
||
|
|
|
||
|
|
} while (rf && enumReturn == ERROR_SUCCESS);
|
||
|
|
|
||
|
|
if (locationKey) {
|
||
|
|
RegCloseKey(locationKey);
|
||
|
|
locationKey = NULL;
|
||
|
|
}
|
||
|
|
if (deviceKey) {
|
||
|
|
RegCloseKey(deviceKey);
|
||
|
|
deviceKey = NULL;
|
||
|
|
}
|
||
|
|
if (scsiKey) {
|
||
|
|
RegCloseKey(scsiKey);
|
||
|
|
scsiKey = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
return rf;
|
||
|
|
}*/
|
||
|
|
|
||
|
|
BOOL pCDROMDeviceEnumCallback(
|
||
|
|
IN HKEY hDevice,
|
||
|
|
IN PCONTROLLERS_COLLECTION ControllersCollection,
|
||
|
|
IN UINT ControllerIndex,
|
||
|
|
IN PVOID CallbackData
|
||
|
|
)
|
||
|
|
{
|
||
|
|
DRIVE_SCSI_ADDRESS scsiAddress;
|
||
|
|
BOOL bResult;
|
||
|
|
|
||
|
|
MYASSERT(hDevice && ControllersCollection);
|
||
|
|
|
||
|
|
bResult = GetSCSIAddressFromPnPId(ControllersCollection,
|
||
|
|
hDevice,
|
||
|
|
ControllersCollection->ControllersInfo[ControllerIndex].PNPID,
|
||
|
|
&scsiAddress);
|
||
|
|
|
||
|
|
MYASSERT(bResult);
|
||
|
|
|
||
|
|
if(bResult &&
|
||
|
|
((UCHAR)INVALID_SCSI_PORT) != scsiAddress.PortNumber &&
|
||
|
|
DRIVE_CDROM == scsiAddress.DriveType){
|
||
|
|
wsprintf(g_DriveLetters.IdentifierString[scsiAddress.DriveLetter - TEXT('A')],
|
||
|
|
TEXT("%u^%u^%u"),
|
||
|
|
(UINT)scsiAddress.PortNumber,
|
||
|
|
(UINT)scsiAddress.TargetId,
|
||
|
|
(UINT)scsiAddress.Lun);
|
||
|
|
}
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
GatherCdRomDriveInformation (
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PCONTROLLERS_COLLECTION ControllersCollection;
|
||
|
|
UINT i;
|
||
|
|
BOOL bResult;
|
||
|
|
BOOL bDetectedExtraIDEController = FALSE;
|
||
|
|
UINT numberOfSCSIController = 0;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Collect all active IDE and SCSI controllers
|
||
|
|
//
|
||
|
|
bResult = GatherControllersInfo(&ControllersCollection);
|
||
|
|
if(!bResult){
|
||
|
|
MYASSERT(FALSE);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
MYASSERT(ControllersCollection->ControllersInfo);
|
||
|
|
for(i = 0; i < ControllersCollection->NumberOfControllers; i++){
|
||
|
|
switch(ControllersCollection->ControllersInfo[i].ControllerType){
|
||
|
|
case CONTROLLER_EXTRA_IDE:
|
||
|
|
bDetectedExtraIDEController = TRUE;
|
||
|
|
break;
|
||
|
|
case CONTROLLER_SCSI:
|
||
|
|
numberOfSCSIController++;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if(bDetectedExtraIDEController){
|
||
|
|
DebugLog(Winnt32LogWarning, TEXT("Setup has detected that machine have extra IDE controller(s). Setup may not preserve drive letters."), 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if(numberOfSCSIController > 1){
|
||
|
|
DebugLog(Winnt32LogWarning, TEXT("Setup has detected that machine have more than one SCSI controllers. Setup may not preserve drive letters only for SCSI devices."), 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// If we found extra IDE controller(s) we can't ensure rigth device detection in this case.
|
||
|
|
// If we found more than one SCSI controllers without extra IDE controller(s),
|
||
|
|
// at least we can guarantee correct IDE devices detection.
|
||
|
|
//
|
||
|
|
bResult = DeviceEnum(ControllersCollection,
|
||
|
|
TEXT("SCSI"),
|
||
|
|
(PDEVICE_ENUM_CALLBACK_FUNCTION)pCDROMDeviceEnumCallback,
|
||
|
|
NULL);
|
||
|
|
MYASSERT(bResult);
|
||
|
|
|
||
|
|
ReleaseControllersInfo(ControllersCollection);
|
||
|
|
|
||
|
|
return bResult;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
WriteInfoToSifFile (
|
||
|
|
IN PCTSTR FileName
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL rSuccess = TRUE;
|
||
|
|
DWORD index;
|
||
|
|
TCHAR dataString[MAX_PATH * 2]; // Well over the size needed.
|
||
|
|
TCHAR driveString[20]; // Well over the size needed.
|
||
|
|
PCTSTR sectionString = WINNT_D_WIN9XDRIVES;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
for (index = 0; index < NUMDRIVELETTERS; index++) {
|
||
|
|
|
||
|
|
if (g_DriveLetters.ExistsOnSystem[index]) {
|
||
|
|
|
||
|
|
wsprintf(
|
||
|
|
driveString,
|
||
|
|
TEXT("%u"),
|
||
|
|
index
|
||
|
|
);
|
||
|
|
|
||
|
|
wsprintf(
|
||
|
|
dataString,
|
||
|
|
TEXT("%u,%s"),
|
||
|
|
g_DriveLetters.Type[index],
|
||
|
|
g_DriveLetters.IdentifierString[index]
|
||
|
|
);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Ending string looks like <drive num>,<drive type>,<identifier string>
|
||
|
|
//
|
||
|
|
|
||
|
|
WritePrivateProfileString (sectionString, driveString, dataString, FileName);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
return rSuccess;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
SaveDriveLetterInformation (
|
||
|
|
IN PCTSTR FileName
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL rf = TRUE;
|
||
|
|
|
||
|
|
if (InitializeDriveLetterStructure ()) {
|
||
|
|
|
||
|
|
GatherHardDriveInformation ();
|
||
|
|
GatherCdRomDriveInformation ();
|
||
|
|
WriteInfoToSifFile (FileName);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return ERROR_SUCCESS;
|
||
|
|
}
|