155 lines
2.7 KiB
C
155 lines
2.7 KiB
C
/*++
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Copyright (c) 1993 - Colorado Memory Systems, Inc.
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All Rights Reserved
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Module Name:
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appvoltd.c
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Abstract:
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appends a volume entry to the qic-40 volume table
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Revision History:
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--*/
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//
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// include files
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//
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#include <ntddk.h>
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#include <ntddtape.h>
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#include "common.h"
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#include "q117.h"
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#include "protos.h"
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#define FCT_ID 0x0101
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dStatus
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q117AppVolTD(
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IN OUT PVOLUME_TABLE_ENTRY TheVolumeTable,
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IN OUT PQ117_CONTEXT Context
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)
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/*++
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Routine Description:
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Appends the VolDir to the tape directory.
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Arguments:
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TheVolumeTable - pointer to the volume directory to be added
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Context -
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Return Value:
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ERR_NO_ERR, any driver error
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--*/
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{
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LONG ret,i;
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LONG tmpseqnum;
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PIO_REQUEST ioreq;
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VOLUME_TABLE_ENTRY scrvol;
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PSEGMENT_BUFFER bufferInfo;
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ret =0;
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//
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// Now compute the VolDir's checksum.
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//
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TheVolumeTable->Signature=VolumeTableSig;
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//
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// If we are updating a specific volume entry
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//
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if (Context->ActiveVolumeNumber) {
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//
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// must use temporary var because ReadVolumeEntry() updates
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// ActiveVolumeNumber
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//
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tmpseqnum = Context->ActiveVolumeNumber;
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ret = q117SelectTD(Context);
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if (ret) {
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return(ret);
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}
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for (i=0;i<tmpseqnum;++i) {
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ret = q117ReadVolumeEntry(&scrvol,Context);
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if (ret) {
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return(ret);
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}
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}
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//
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// add in this volume table
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//
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RtlMoveMemory(Context->CurrentOperation.SegmentPointer,TheVolumeTable,sizeof(*TheVolumeTable));
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Context->CurrentOperation.SegmentPointer=q117GetLastBuffer(Context);
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} else {
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if (!ret ) {
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Context->CurrentOperation.SegmentPointer=q117GetFreeBuffer(&bufferInfo,Context);
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RtlZeroMemory(
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Context->CurrentOperation.SegmentPointer,
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q117GoodDataBytes(Context->CurrentTape.VolumeSegment,Context));
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//
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// add in this volume table
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//
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RtlMoveMemory(Context->CurrentOperation.SegmentPointer,TheVolumeTable,sizeof(*TheVolumeTable));
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}
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}
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if (!ret) {
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//
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// write out volume directory block
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//
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if (!(ret = q117IssIOReq(
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Context->CurrentOperation.SegmentPointer,
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CMD_WRITE,
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(LONG)Context->CurrentTape.VolumeSegment * BLOCKS_PER_SEGMENT,
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bufferInfo,
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Context))) {
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ioreq=q117Dequeue(WaitForItem, Context);
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ret = ioreq->x.adi_hdr.status;
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}
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}
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if (!ret) {
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++Context->ActiveVolumeNumber;
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}
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return(ret);
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}
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