/*

    File:       ShowSystemVolumeID.c

    Contains:   

    Written by: Martin Minow    

    Copyright:  Copyright © 1992-1999 by Apple Computer, Inc., All Rights Reserved.

                You may incorporate this Apple sample source code into your program(s) without

                restriction. This Apple sample source code has been provided "AS IS" and the

                responsibility for its operation is yours. You are not permitted to redistribute

                this Apple sample source code as "Apple sample source code" after having made

                changes. If you're going to re-distribute the source, we require that you make

                it clear in the source that the code was descended from Apple sample source

                code, but that you've made changes.

    Change History (most recent first):

                7/14/1999   Karl Groethe    Updated for Metrowerks Codewarror Pro 2.1

*/

#include <Folders.h>

#include <GestaltEqu.h>

#include <Files.h>

#include <Devices.h>

#include <Memory.h>

#include <Traps.h>

#include <stdio.h>

void                    ShowSystemVolumeName(void);

void                    ShowSCSIDeviceIdent(

        short               driverRefNum

    );

static void

ClearMemory(

        Ptr             ptr,

        Size            size

    )

{

        while (size > 0) {

            *ptr++ = 0;

            --size;

        }

}

void

ShowSystemVolumeName(void)

{

        OSErr                   status;

        long                    gestaltResult;

        short                   systemVRefNum;

        long                    systemFolderDirID;

        HVolumeParam            pb;

        Str255                  systemVolumeName;

        status = Gestalt(gestaltFindFolderAttr, &gestaltResult);

        if (status == noErr) {              /* We have FindFolder               */

            status = FindFolder(

                        kOnSystemDisk,

                        kSystemFolderType,

                        kDontCreateFolder,

                        &systemVRefNum,

                        &systemFolderDirID

                    );

        }

        if (status == noErr) {

            ClearMemory((Ptr) &pb, sizeof pb);

            pb.ioVolIndex = 0;

            pb.ioNamePtr = systemVolumeName;

            pb.ioVRefNum = systemVRefNum;

            status = PBHGetVInfoSync((HParmBlkPtr) &pb);

        }

        if (status == noErr) {

            printf("Boot volume \"%.*s\", drive %d, driver %d",

                systemVolumeName[0],

                &systemVolumeName[1],

                pb.ioVDrvInfo,

                pb.ioVDRefNum

            );

            ShowSCSIDeviceIdent(pb.ioVDRefNum);

            printf("\n");

        }

}