357 lines
9.4 KiB
C
357 lines
9.4 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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ocdskspc.c
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Abstract:
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Routines to ask subcomponents for the approximate amount
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of disk space they take up.
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Author:
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Ted Miller (tedm) 17-Sep-1996
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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VOID
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pOcGetChildrenApproximateDiskSpace(
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IN POC_MANAGER OcManager,
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IN LONG TopLevelOcId,
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IN LONG CurrentOcId,
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IN LPCTSTR DriveSpec
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)
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/*++
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Routine Description:
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Worker routine for pOcGetApproximateDiskSpace(). This routine recursively
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iterates through a hierarchy of subcomponents, asking leaf components
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for their space (via the OC_CALC_DISK_SPACE interface routine) and amalgamating
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child results at non-leaf nodes.
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We use the OC_CALC_DISK_SPACE interface routine with an the "ignore-on-disk"
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disk space list, to trick the components into telling us how much space their
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files take up.
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Arguments:
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OcManager - supplies OC Manager context.
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TopLevelOcId - supplies string id in the component string table for the
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top-level subcomponent at the root of the hierarchy whose disk space
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is being summed.
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CurrentOcId - supplies string id for subcomponent whose disk space is
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being summed.
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DriveSpec - supplies drive spec of drive we care about for space calculations,
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ie, the drive where the system is installed.
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AccumulatedSpace - receives the summed space for all the children of the
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current subcomponent, or the component itself if it's a leaf node.
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Return Value:
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None.
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--*/
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{
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HDSKSPC DiskSpaceList;
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LONGLONG Space = 0;
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LONG Id;
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OPTIONAL_COMPONENT CurrentOc;
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OPTIONAL_COMPONENT Oc;
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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CurrentOcId,
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&CurrentOc,
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sizeof(OPTIONAL_COMPONENT)
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);
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if(CurrentOc.FirstChildStringId == -1) {
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if ( TopLevelOcId == pOcGetTopLevelComponent(OcManager,CurrentOcId) ){
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//
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// only get the approximate disk space if we haven't already retreived it from their inf
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//
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if ((CurrentOc.InternalFlags & OCFLAG_APPROXSPACE) ==0) {
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//
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// This oc is a child/leaf component.
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// Create an ignore-disk disk space list and ask
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// the component dll to add its files to it.
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//
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if(DiskSpaceList = SetupCreateDiskSpaceList(0,0,SPDSL_IGNORE_DISK | SPDSL_DISALLOW_NEGATIVE_ADJUST)) {
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OcInterfaceCalcDiskSpace(
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OcManager,
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pOcGetTopLevelComponent(OcManager,CurrentOcId),
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pSetupStringTableStringFromId(OcManager->ComponentStringTable,CurrentOcId),
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DiskSpaceList,
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TRUE
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);
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if(!SetupQuerySpaceRequiredOnDrive(DiskSpaceList,DriveSpec,&Space,0,0)) {
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Space = 0;
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}
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SetupDestroyDiskSpaceList(DiskSpaceList);
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}
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DBGOUT((
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TEXT("OCM: pOcGetChildrenApproximateDiskSpace COMP(%s) SUB(%s)\n"),
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pSetupStringTableStringFromId( OcManager->ComponentStringTable, TopLevelOcId),
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pSetupStringTableStringFromId( OcManager->ComponentStringTable, CurrentOcId)
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));
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DBGOUT((TEXT("OCM: Space=%#lx%08lx\n"),(LONG)(Space>>32),(LONG)Space));
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//
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// Now store the required space we just calculated
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//
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CurrentOc.SizeApproximation = Space;
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pSetupStringTableSetExtraData(
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OcManager->ComponentStringTable,
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CurrentOcId,
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&CurrentOc,
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sizeof(OPTIONAL_COMPONENT)
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);
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}
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}
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} else {
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//
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// Parent component. Do all the children, accumulating the result.
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//
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Id = CurrentOc.FirstChildStringId;
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do {
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pOcGetChildrenApproximateDiskSpace(OcManager,TopLevelOcId,Id,DriveSpec);
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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Id,
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&Oc,
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sizeof(OPTIONAL_COMPONENT)
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);
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Id = Oc.NextSiblingStringId;
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} while(Id != -1);
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//
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// Now store the required space we just calculated
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//
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CurrentOc.SizeApproximation = Space;
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pSetupStringTableSetExtraData(
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OcManager->ComponentStringTable,
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CurrentOcId,
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&CurrentOc,
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sizeof(OPTIONAL_COMPONENT)
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);
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}
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}
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VOID
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pOcSumApproximateDiskSpace(
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IN POC_MANAGER OcManager,
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IN LONG CurrentOcId,
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IN OUT LONGLONG *AccumulatedSpace
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)
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/*++
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Routine Description:
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Worker routine for pOcGetApproximateDiskSpace(). This routine recursively
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iterates through a hierarchy of subcomponents, adding up leaf components
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for their space via the stored Estimated Amount
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Arguments:
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OcManager - supplies OC Manager context.
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CurrentOcId - supplies string id for subcomponent whose disk space is
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being summed.
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AccumulatedSpace - receives the summed space for all the children of the
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current subcomponent, or the component itself if it's a leaf node.
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Return Value:
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None.
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--*/
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{
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LONGLONG Space;
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LONG Id;
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OPTIONAL_COMPONENT CurrentOc;
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OPTIONAL_COMPONENT Oc;
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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CurrentOcId,
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&CurrentOc,
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sizeof(OPTIONAL_COMPONENT)
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);
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if(CurrentOc.FirstChildStringId == -1) {
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DBGOUT((TEXT("Child ")));
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Space = CurrentOc.SizeApproximation;
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} else {
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//
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// Parent component. Do all the children, accumulating the result.
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//
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Space = 0;
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DBGOUT((TEXT("Parent ")));
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DBGOUT((
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TEXT("SUB(%s)"),
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pSetupStringTableStringFromId( OcManager->ComponentStringTable, CurrentOcId)
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));
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DBGOUT((TEXT("Space=%#lx%08lx\n"),(LONG)(Space>>32),(LONG)Space));
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Id = CurrentOc.FirstChildStringId;
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do {
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pOcSumApproximateDiskSpace(OcManager,Id,&Space);
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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Id,
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&Oc,
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sizeof(OPTIONAL_COMPONENT)
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);
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Id = Oc.NextSiblingStringId;
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} while(Id != -1);
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}
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*AccumulatedSpace += Space;
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CurrentOc.SizeApproximation = Space;
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pSetupStringTableSetExtraData(
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OcManager->ComponentStringTable,
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CurrentOcId,
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&CurrentOc,
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sizeof(OPTIONAL_COMPONENT)
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);
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DBGOUT((TEXT(" SUB(%s)"),
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pSetupStringTableStringFromId( OcManager->ComponentStringTable, CurrentOcId)));
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DBGOUT((TEXT(" Space=%#lx%08lx "),(LONG)(Space>>32),(LONG)Space));
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DBGOUT((TEXT(" AccumulatedSpace=%#lx%08lx\n"),(LONG)(*AccumulatedSpace>>32),(LONG)*AccumulatedSpace));
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}
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VOID
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pOcGetApproximateDiskSpace(
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IN POC_MANAGER OcManager
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)
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/*++
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Routine Description:
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This routine is used to get an approximate disk space usage number
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for display in the oc page. This number bears no relation to what is
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currently on the disk; rather it merely reflects the approximate of space
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the component takes up in an absolute, independent sense, when installed.
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Arguments:
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OcManager - supplies OC Manager context.
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Return Value:
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None.
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--*/
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{
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UINT iChild,n;
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TCHAR Drive[MAX_PATH];
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LONGLONG Space;
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OPTIONAL_COMPONENT Oc;
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// We check the return code of GetWindowsDirectory to make Prefix happy.
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if (0 == GetWindowsDirectory(Drive,MAX_PATH))
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return;
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Drive[2] = 0;
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//
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// Iterate through top-level components. We only care about
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// ones that have per-component infs, since those are the
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// only ones that will show up in the OC Page.
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//
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for(n=0; n<OcManager->TopLevelOcCount; n++) {
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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OcManager->TopLevelOcStringIds[n],
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&Oc,
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sizeof(OPTIONAL_COMPONENT)
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);
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if(Oc.InfStringId != -1) {
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for(iChild=0;
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iChild<OcManager->TopLevelParentOcCount;
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iChild++)
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{
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//
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// Now call the component dll for each child subcomponent.
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//
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pOcGetChildrenApproximateDiskSpace(
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OcManager,
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OcManager->TopLevelOcStringIds[n],
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OcManager->TopLevelParentOcStringIds[iChild],
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Drive
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);
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}
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}
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}
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// Now final pass Sum the all the information in to parent nodes
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for(n=0; n<OcManager->TopLevelParentOcCount; n++) {
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pSetupStringTableGetExtraData(
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OcManager->ComponentStringTable,
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OcManager->TopLevelParentOcStringIds[n],
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&Oc,
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sizeof(OPTIONAL_COMPONENT)
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);
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Space = 0;
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pOcSumApproximateDiskSpace(
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OcManager,
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OcManager->TopLevelParentOcStringIds[n],
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&Space
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);
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}
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}
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