/*

    File:       ShowAllDriveQueueElements.c

    Contains:   This subroutine scans the linked list of drive queue elements and displays

                information about each active drive.

    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 <stdio.h>

#include <Files.h>

#include <Devices.h>

void                    ShowAllDriveQueueElements(void);

void                    ShowOneDriveQueueElement(

        register DrvQEl     *drvQElPtr

    );

void                    ShowSCSIDeviceIdent(

        short               driverRefNum

    );

void

ShowAllDriveQueueElements(void)

{

        register DrvQEl     *drvQElPtr;

#define DQEL    (*drvQElPtr)

        drvQElPtr = (DrvQEl *) GetDrvQHdr()->qHead;

        while (drvQElPtr != NULL) {

            ShowOneDriveQueueElement(drvQElPtr);

            drvQElPtr = (DrvQEl *) drvQElPtr->qLink;

        }

#undef DQEL

}

void

ShowOneDriveQueueElement(

        register DrvQEl     *drvQElPtr

    )

{

#define DQEL    (*drvQElPtr)

        printf("Drive %2d, driver %3d,", (int) DQEL.dQDrive, (int) DQEL.dQRefNum);

        switch (DQEL.qType) {

        case 0:

            printf(

                "%8lu blocks (small drive)",

                (unsigned long) DQEL.dQDrvSz

            );

            break;

        case 1:

            printf(

                "%8lu blocks (large drive)",

                ((unsigned long) DQEL.dQDrvSz)

                + (((unsigned long) DQEL.dQDrvSz2) * 0x10000L)

            );

            break;

        case 3:

            printf(

                "%8lu blocks (MFS present)",

                ((unsigned long) DQEL.dQDrvSz)

            );

            break;

        default:

            printf(

                "%lu %lu blocks (unknown queue type)",

                ((unsigned long) DQEL.dQDrvSz),

                ((unsigned long) DQEL.dQDrvSz2)

            );

            break;

        }

        ShowSCSIDeviceIdent(DQEL.dQRefNum);

        printf("\n");

#undef DQEL

}