1026 lines
26 KiB
C
1026 lines
26 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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win31upg.c
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Abstract:
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Code for checking install into an existing win31 directory. This is
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only relevant on non ARC machines since Windows NT doesn't allow
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installation of Windows 3.1, therefore DOS is needed to install
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Windows 3.1.
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The Windows 3.1 directory can only exist on FAT volumes. However
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in the functions below we take care of this fact only implicitly
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by taking advantage of the fact that since the volumes are not
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cached, any file operation below will fail if it is on a non FAT
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volume.
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Author:
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Sunil Pai (sunilp) Nov-1992
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Revision History:
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Ted Miller (tedm) Sep-1993
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- reworked for new text setup.
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--*/
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#include "spprecmp.h"
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#pragma hdrstop
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// in win9xupg.c
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BOOLEAN
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SpIsWin9xMsdosSys(
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IN PDISK_REGION Region,
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OUT PSTR* Win9xPath
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);
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BOOLEAN
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SpIsDosConfigSys(
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IN PDISK_REGION Region
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);
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PUCHAR
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SpGetDosPath(
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IN PDISK_REGION Region
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);
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BOOLEAN
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SpIsWin31Dir(
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IN PDISK_REGION Region,
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IN PWSTR PathComponent,
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IN ULONG MinKB
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);
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VOID
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SpWin31DriveFull(
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IN PDISK_REGION Region,
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IN PWSTR DosPathComponent,
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IN ULONG MinKB
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);
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BOOLEAN
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SpConfirmWin31Upgrade(
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IN PDISK_REGION Region,
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IN PWSTR DosPathComponent
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);
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WCHAR
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SpExtractDriveLetter(
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IN PWSTR PathComponent
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);
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extern BOOLEAN DriveAssignFromA; //NEC98
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BOOLEAN
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SpLocateWin31(
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IN PVOID SifHandle,
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OUT PDISK_REGION *InstallRegion,
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OUT PWSTR *InstallPath,
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OUT PDISK_REGION *SystemPartitionRegion
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)
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/*++
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Routine Description:
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High level function to determine whether a windows directory exists
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and whether to install into that directory. Win31 directories
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can only be on FAT volumes.
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Arguments:
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SifHandle - supplies handle to loaded setup information file.
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InstallRegion - if this routine returns TRUE, then this returns a pointer
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to the region to install to.
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InstallPath - if this routine returns TRUE, then this returns a pointer
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to a buffer containing the path on the partition to install to.
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The caller must free this buffer with SpMemFree().
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SystemPartitionRegion - if this routine returns TRUE, then this returns
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a pointer to the region for the system partition (ie, C:).
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Return Value:
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TRUE if we are going to install into a win3.1 directory.
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FALSE otherwise.
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--*/
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{
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PDISK_REGION CColonRegion;
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PDISK_REGION Region;
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PDISK_REGION FoundRegion;
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PUCHAR DosPath;
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PWSTR FoundComponent;
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PWSTR *DosPathComponents;
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ULONG ComponentCount;
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ULONG i,j,pass;
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ULONG MinKB;
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BOOLEAN NoSpace;
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ULONG Space;
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BOOLEAN StartsWithDriveLetter;
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WCHAR chDeviceName[128]; //NEC98
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CLEAR_CLIENT_SCREEN();
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SpDisplayStatusText(SP_STAT_LOOKING_FOR_WIN31,DEFAULT_STATUS_ATTRIBUTE);
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if (!IsNEC_98) { //NEC98
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//
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// See if there is a valid C: already. If not, then silently fail.
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//
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CColonRegion = SpPtValidSystemPartition();
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if(!CColonRegion) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: no C:, no windows 3.1!\n"));
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return(FALSE);
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}
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//
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// This is the system partition.
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//
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*SystemPartitionRegion = CColonRegion;
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//
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// Check the filesystem. If not FAT, then silently fail.
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//
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if(CColonRegion->Filesystem != FilesystemFat) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: C: is not FAT, no windows 3.1!\n"));
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return(FALSE);
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}
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//
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// Check to see if there is enough free space, etc on C:.
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// If not, silently fail.
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//
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if(!SpPtValidateCColonFormat(SifHandle,NULL,CColonRegion,TRUE,NULL,NULL)) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: C: not acceptable, no windows 3.1!\n"));
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return(FALSE);
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}
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} else { //NEC98
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//
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// Don'y see only C: on PC98.
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//
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CColonRegion = NULL;
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} //NEC98
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if (!IsNEC_98) { //NEC98
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//
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// Don't confuse Win95 with Win3.1 - we're looking only for Win3.1
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//
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if(SpIsWin9xMsdosSys(CColonRegion, &DosPath) )
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return(FALSE);
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//
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// Determine whether config.sys is for DOS.
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//
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if(!SpIsDosConfigSys(CColonRegion)) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: config.sys not DOS; no windows 3.1!\n"));
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return(FALSE);
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}
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//
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// Get the DOS path.
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//
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DosPath = SpGetDosPath(CColonRegion);
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} else { //NEC98
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DosPath = NULL;
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wcscpy(chDeviceName+1,L":");
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for (i=0; i<(L'Z'-L'A'); i++) {
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chDeviceName[0] = (WCHAR)('A' + i);
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CColonRegion = SpRegionFromDosName(chDeviceName);
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if ( CColonRegion ) {
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if ( (CColonRegion->Filesystem != FilesystemFat) ||
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(SpIsWin9xMsdosSys(CColonRegion, &DosPath) ) ||
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(!SpIsDosConfigSys(CColonRegion)) ) {
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continue;
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}
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: found config.sys on %s\n", chDeviceName));
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DosPath = SpGetDosPath(CColonRegion);
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if (DosPath) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: found dos path on %s\n", chDeviceName));
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break;
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}
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}
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}
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} //NEC98
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if(!DosPath) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: no dos path; no windows 3.1!\n"));
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return(FALSE);
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}
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//
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// Break up the DOS path into components.
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//
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SpGetEnvVarWComponents(DosPath,&DosPathComponents,&ComponentCount);
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if(!ComponentCount) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: no components in dos path\n"));
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//
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// data structure still built even if no components
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//
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SpFreeEnvVarComponents(DosPathComponents);
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return(FALSE);
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}
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//
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// Search each one of the components and check to see if it is
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// a windows directory
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//
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FoundRegion = NULL;
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for(i=0; DosPathComponents[i] && !FoundRegion; i++) {
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Region = SpPathComponentToRegion(DosPathComponents[i]);
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if(Region) {
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//
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// Fetch the amount of free space required on the windows nt drive.
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//
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SpFetchDiskSpaceRequirements( SifHandle,
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Region->BytesPerCluster,
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&MinKB,
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NULL);
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//
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// See whether windows is in this directory on
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// the drive.
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//
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if(SpIsWin31Dir(Region,DosPathComponents[i],MinKB)) {
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FoundRegion = Region;
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FoundComponent = DosPathComponents[i];
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}
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}
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}
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//
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// The drive letters we are using in NT will not always match
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// those in use by DOS. So if we have not found the windows directory
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// yet, then try using every path component on every drive.
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//
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if(!FoundRegion) {
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for(i=0; i<HardDiskCount && !FoundRegion; i++) {
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for(pass=0; pass<2; pass++) {
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for( Region= ( pass
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? PartitionedDisks[i].ExtendedDiskRegions
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: PartitionedDisks[i].PrimaryDiskRegions
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);
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Region;
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Region=Region->Next
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)
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{
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for(j=0; DosPathComponents[j] && !FoundRegion; j++) {
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//
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// Fetch the amount of free space required on the windows nt drive.
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//
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SpFetchDiskSpaceRequirements( SifHandle,
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Region->BytesPerCluster,
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&MinKB,
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NULL);
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if(SpIsWin31Dir(Region,DosPathComponents[j],MinKB)) {
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FoundRegion = Region;
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FoundComponent = DosPathComponents[j];
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}
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}
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}
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}
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}
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}
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//
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// If directory has been found, check space on the drive and and the
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// user if he wants to install into the directory.
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//
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if(FoundRegion) {
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StartsWithDriveLetter = (BOOLEAN)(SpExtractDriveLetter(FoundComponent) != 0);
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recheck:
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NoSpace = FALSE;
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if(FoundRegion->AdjustedFreeSpaceKB < MinKB) {
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//
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// There is not enough free space on this drive.
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// Determine if NT is there already. If so, we will
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// allow the user to remove to it make room.
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//
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if(SpIsNtOnPartition(FoundRegion)) {
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NoSpace = TRUE;
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} else {
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//
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// NT not there, no space, bail.
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//
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SpWin31DriveFull(FoundRegion,FoundComponent,MinKB);
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FoundRegion = NULL;
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}
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} else {
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//
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// There is enough free space, so just continue on.
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//
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;
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}
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if(FoundRegion) {
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//
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// Ask the user if he wishes to install into this path.
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// If not, exit this routine.
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//
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if(SpConfirmWin31Upgrade(FoundRegion,FoundComponent)) {
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//
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// He wants to install into win3.1. If there's not enough space,
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// he'll have to delete nt installations first.
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//
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if(NoSpace) {
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WCHAR DriveSpec[3];
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BOOLEAN b;
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if(StartsWithDriveLetter) {
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DriveSpec[0] = FoundComponent[0];
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DriveSpec[1] = L':';
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DriveSpec[2] = 0;
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}
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b = SpAllowRemoveNt(
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FoundRegion,
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StartsWithDriveLetter ? DriveSpec : NULL,
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TRUE,
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SP_SCRN_REMOVE_NT_FILES_WIN31,
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&Space
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);
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if(b) {
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Region->FreeSpaceKB += Space/1024;
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Region->AdjustedFreeSpaceKB += Space/1024;
|
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|
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//
|
||
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// Account for rounding error.
|
||
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//
|
||
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if((Space % 1024) >= 512) {
|
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(Region->FreeSpaceKB)++;
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(Region->AdjustedFreeSpaceKB)++;
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}
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goto recheck;
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} else {
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FoundRegion = NULL;
|
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}
|
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} else {
|
||
|
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//
|
||
|
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// There is enough space. Accept this partition.
|
||
|
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//
|
||
|
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;
|
||
|
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}
|
||
|
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} else {
|
||
|
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FoundRegion = NULL;
|
||
|
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}
|
||
|
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}
|
||
|
|
|
||
|
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//
|
||
|
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// Do the disk configuration needed
|
||
|
|
//
|
||
|
|
if(FoundRegion) {
|
||
|
|
if (!IsNEC_98) { //NEC98
|
||
|
|
SpPtMakeRegionActive(CColonRegion);
|
||
|
|
SpPtDoCommitChanges();
|
||
|
|
} else {
|
||
|
|
*SystemPartitionRegion = FoundRegion;
|
||
|
|
} //NEC98
|
||
|
|
|
||
|
|
*InstallRegion = FoundRegion;
|
||
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|
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|
|
*InstallPath = SpDupStringW(FoundComponent+(StartsWithDriveLetter ? 2 : 0));
|
||
|
|
|
||
|
|
ASSERT(*InstallPath);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SpMemFree(DosPath);
|
||
|
|
SpFreeEnvVarComponents(DosPathComponents);
|
||
|
|
|
||
|
|
return((BOOLEAN)(FoundRegion != NULL));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
SpWin31DriveFull(
|
||
|
|
IN PDISK_REGION Region,
|
||
|
|
IN PWSTR DosPathComponent,
|
||
|
|
IN ULONG MinKB
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Inform a user that Setup has found a previous Windows installation
|
||
|
|
but is unable to install into the same path because the drive is too
|
||
|
|
full. The user has the option to continue on and specify a new path
|
||
|
|
or exit and create enough space.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
None. Function doesn't return if the user chooses to exit setup at
|
||
|
|
this point. If the function returns, it is implicit that the user
|
||
|
|
wants to continue on and specify a new path for Microsoft Windows NT.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
ULONG ValidKeys[3] = { KEY_F3,ASCI_CR,0 };
|
||
|
|
|
||
|
|
ASSERT(Region->PartitionedSpace);
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
|
||
|
|
SpStartScreen(
|
||
|
|
SP_SCRN_WIN31_DRIVE_FULL,
|
||
|
|
3,
|
||
|
|
HEADER_HEIGHT+1,
|
||
|
|
FALSE,
|
||
|
|
FALSE,
|
||
|
|
DEFAULT_ATTRIBUTE,
|
||
|
|
//NEC98: Win3.x for NEC must be assign hard drive from A:
|
||
|
|
((!IsNEC_98 || DriveAssignFromA || (Region->DriveLetter < L'C'))
|
||
|
|
? Region->DriveLetter :
|
||
|
|
Region->DriveLetter - 2),
|
||
|
|
DosPathComponent + (SpExtractDriveLetter(DosPathComponent) ? 2 : 0),
|
||
|
|
MinKB/1024
|
||
|
|
);
|
||
|
|
|
||
|
|
SpDisplayStatusOptions(
|
||
|
|
DEFAULT_STATUS_ATTRIBUTE,
|
||
|
|
SP_STAT_F3_EQUALS_EXIT,
|
||
|
|
SP_STAT_ENTER_EQUALS_CONTINUE,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
|
||
|
|
switch(SpWaitValidKey(ValidKeys,NULL,NULL)) {
|
||
|
|
|
||
|
|
case KEY_F3:
|
||
|
|
SpConfirmExit();
|
||
|
|
break;
|
||
|
|
case ASCI_CR:
|
||
|
|
//
|
||
|
|
// User wants to continue.
|
||
|
|
//
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
SpConfirmWin31Upgrade(
|
||
|
|
IN PDISK_REGION Region,
|
||
|
|
IN PWSTR DosPathComponent
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Inform a user that Setup has found a previous Windows installation.
|
||
|
|
The user has the option to continue on and specify a new path
|
||
|
|
or accept the windows 3.1 path.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE if the user wants to upgrade win3.1, FALSE if he wants
|
||
|
|
to select a new path.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
ULONG ValidKeys[3] = { KEY_F3,ASCI_CR,0 };
|
||
|
|
ULONG Mnemonics[2] = { MnemonicNewPath,0 };
|
||
|
|
|
||
|
|
ASSERT(Region->PartitionedSpace);
|
||
|
|
|
||
|
|
if(UnattendedOperation) {
|
||
|
|
|
||
|
|
PWSTR p;
|
||
|
|
|
||
|
|
p = SpGetSectionKeyIndex(UnattendedSifHandle,SIF_UNATTENDED,L"Win31Upgrade",0);
|
||
|
|
if(p) {
|
||
|
|
if(!_wcsicmp(p,L"yes")) {
|
||
|
|
return(TRUE);
|
||
|
|
} else {
|
||
|
|
if(!_wcsicmp(p,L"no")) {
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
// bogus value; user gets attended behavior.
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
//
|
||
|
|
// Not specified; default to no.
|
||
|
|
//
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
|
||
|
|
SpStartScreen(
|
||
|
|
SP_SCRN_WIN31_UPGRADE,
|
||
|
|
3,
|
||
|
|
HEADER_HEIGHT+1,
|
||
|
|
FALSE,
|
||
|
|
FALSE,
|
||
|
|
DEFAULT_ATTRIBUTE,
|
||
|
|
//NEC98: Win3.x for NEC must be assign hard drive from A:
|
||
|
|
((!IsNEC_98 || DriveAssignFromA || (Region->DriveLetter < L'C'))
|
||
|
|
? Region->DriveLetter :
|
||
|
|
Region->DriveLetter - 2),
|
||
|
|
DosPathComponent + (SpExtractDriveLetter(DosPathComponent) ? 2 : 0)
|
||
|
|
);
|
||
|
|
|
||
|
|
SpDisplayStatusOptions(
|
||
|
|
DEFAULT_STATUS_ATTRIBUTE,
|
||
|
|
SP_STAT_F3_EQUALS_EXIT,
|
||
|
|
SP_STAT_ENTER_EQUALS_CONTINUE,
|
||
|
|
SP_STAT_N_EQUALS_NEW_PATH,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
|
||
|
|
switch(SpWaitValidKey(ValidKeys,NULL,Mnemonics)) {
|
||
|
|
|
||
|
|
case KEY_F3:
|
||
|
|
SpConfirmExit();
|
||
|
|
break;
|
||
|
|
case ASCI_CR:
|
||
|
|
return(TRUE);
|
||
|
|
default:
|
||
|
|
//
|
||
|
|
// Must have chosen n for new path.
|
||
|
|
//
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
SpConfirmRemoveWin31(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Upgrading NT case:
|
||
|
|
|
||
|
|
Tell the user that the NT he is upgrading is coexistent with the
|
||
|
|
win31 path. Since this will remove Win3.1, confirm that this is OK.
|
||
|
|
The options are to continue, which removes Win31, or exit setup.
|
||
|
|
|
||
|
|
Not upgrading NT case:
|
||
|
|
|
||
|
|
Tell the user that the path he entered is also the win31 dir.
|
||
|
|
Since installing NT in there will remove Win31, confirm that this
|
||
|
|
is OK. The options are to continue the win31 upgrade, exit setup,
|
||
|
|
or choose a dofferent location.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE if the user wants to upgrade win3.1, FALSE if he wants
|
||
|
|
to select a new path.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
ULONG ValidKeys[4] = { KEY_F3,0 };
|
||
|
|
ULONG Mnemonics[3] = { MnemonicUpgrade,0,0 };
|
||
|
|
ULONG c;
|
||
|
|
|
||
|
|
if(NTUpgrade != UpgradeFull) {
|
||
|
|
Mnemonics[1] = MnemonicNewPath;
|
||
|
|
}
|
||
|
|
|
||
|
|
while(1) {
|
||
|
|
|
||
|
|
SpStartScreen(
|
||
|
|
SP_SCRN_WIN31_REMOVE,
|
||
|
|
3,
|
||
|
|
HEADER_HEIGHT+1,
|
||
|
|
FALSE,
|
||
|
|
FALSE,
|
||
|
|
DEFAULT_ATTRIBUTE
|
||
|
|
);
|
||
|
|
|
||
|
|
SpDisplayStatusOptions(
|
||
|
|
DEFAULT_STATUS_ATTRIBUTE,
|
||
|
|
SP_STAT_F3_EQUALS_EXIT,
|
||
|
|
SP_STAT_U_EQUALS_UPGRADE,
|
||
|
|
0,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
|
||
|
|
if((c = SpWaitValidKey(ValidKeys,NULL,Mnemonics)) == KEY_F3) {
|
||
|
|
SpConfirmExit();
|
||
|
|
} else {
|
||
|
|
c &= ~KEY_MNEMONIC;
|
||
|
|
if(c == MnemonicUpgrade) {
|
||
|
|
return(TRUE);
|
||
|
|
}
|
||
|
|
// new path
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
SpIsWin31Dir(
|
||
|
|
IN PDISK_REGION Region,
|
||
|
|
IN PWSTR PathComponent,
|
||
|
|
IN ULONG MinKB
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
To find out if the directory indicated on the region contains a
|
||
|
|
Microsoft Windows 3.x installation.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Region - supplies pointer to disk region descriptor for region
|
||
|
|
containing the directory to be checked.
|
||
|
|
|
||
|
|
PathComponent - supplies a component of the dos path to search
|
||
|
|
on the region. This is assumes to be in the form x:\dir.
|
||
|
|
If it is not in this form, this routine will fail.
|
||
|
|
|
||
|
|
MinKB - supplies the minimum size of the partition in KB.
|
||
|
|
If the partition is not at least this large, then this
|
||
|
|
routine will return false.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE if this path contains a Microsoft Windows 3.x installation.
|
||
|
|
|
||
|
|
FALSE otherwise.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
PWSTR files[] = { L"WIN.COM", L"WIN.INI", L"SYSTEM.INI" };
|
||
|
|
PWCHAR OpenPath;
|
||
|
|
ULONG SizeKB;
|
||
|
|
ULONG remainder;
|
||
|
|
BOOLEAN rc;
|
||
|
|
LARGE_INTEGER temp;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Assume failure.
|
||
|
|
//
|
||
|
|
rc = FALSE;
|
||
|
|
|
||
|
|
//
|
||
|
|
// If the partition is not FAT, then ignore it.
|
||
|
|
//
|
||
|
|
if(Region->PartitionedSpace && (Region->Filesystem == FilesystemFat)) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// If the partition is not large enough, ignore it.
|
||
|
|
// Calculate the size of the partition in KB.
|
||
|
|
//
|
||
|
|
temp.QuadPart = UInt32x32To64(
|
||
|
|
Region->SectorCount,
|
||
|
|
HardDisks[Region->DiskNumber].Geometry.BytesPerSector
|
||
|
|
);
|
||
|
|
|
||
|
|
SizeKB = RtlExtendedLargeIntegerDivide(temp,1024,&remainder).LowPart;
|
||
|
|
|
||
|
|
if(remainder >= 512) {
|
||
|
|
SizeKB++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if(SizeKB >= MinKB) {
|
||
|
|
|
||
|
|
OpenPath = SpMemAlloc(512*sizeof(WCHAR));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Form the name of the partition.
|
||
|
|
//
|
||
|
|
SpNtNameFromRegion(Region,OpenPath,512*sizeof(WCHAR),PartitionOrdinalCurrent);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Slap on the directory part of the path component.
|
||
|
|
//
|
||
|
|
SpConcatenatePaths(
|
||
|
|
OpenPath,
|
||
|
|
PathComponent + (SpExtractDriveLetter(PathComponent) ? 2 : 0)
|
||
|
|
);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Determine whether all the required files are present.
|
||
|
|
//
|
||
|
|
rc = SpNFilesExist(OpenPath,files,ELEMENT_COUNT(files),FALSE);
|
||
|
|
|
||
|
|
if(rc) {
|
||
|
|
//
|
||
|
|
// Make sure this isn't a Windows 4.x installation.
|
||
|
|
//
|
||
|
|
rc = !SpIsWin4Dir(Region, PathComponent);
|
||
|
|
}
|
||
|
|
|
||
|
|
SpMemFree(OpenPath);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
SpIsDosConfigSys(
|
||
|
|
IN PDISK_REGION Region
|
||
|
|
)
|
||
|
|
{
|
||
|
|
WCHAR OpenPath[512];
|
||
|
|
HANDLE FileHandle,SectionHandle;
|
||
|
|
ULONG FileSize;
|
||
|
|
PVOID ViewBase;
|
||
|
|
PUCHAR pFile,pFileEnd,pLineEnd;
|
||
|
|
ULONG i;
|
||
|
|
NTSTATUS Status;
|
||
|
|
ULONG LineLen,KeyLen;
|
||
|
|
PCHAR Keywords[] = { "MAXWAIT","PROTSHELL","RMSIZE","THREADS",
|
||
|
|
"SWAPPATH","PROTECTONLY","IOPL", NULL };
|
||
|
|
|
||
|
|
//
|
||
|
|
// Form name of config.sys.
|
||
|
|
//
|
||
|
|
SpNtNameFromRegion(Region,OpenPath,sizeof(OpenPath),PartitionOrdinalCurrent);
|
||
|
|
SpConcatenatePaths(OpenPath,L"config.sys");
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open and map the file.
|
||
|
|
//
|
||
|
|
FileHandle = 0;
|
||
|
|
Status = SpOpenAndMapFile(
|
||
|
|
OpenPath,
|
||
|
|
&FileHandle,
|
||
|
|
&SectionHandle,
|
||
|
|
&ViewBase,
|
||
|
|
&FileSize,
|
||
|
|
FALSE
|
||
|
|
);
|
||
|
|
|
||
|
|
if(!NT_SUCCESS(Status)) {
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
pFile = ViewBase;
|
||
|
|
pFileEnd = pFile + FileSize;
|
||
|
|
|
||
|
|
//
|
||
|
|
// This code must guard access to the config.sys buffer because the
|
||
|
|
// buffer is memory mapped (an i/o error would raise an exception).
|
||
|
|
// This code could be structured better, as it now works by returning
|
||
|
|
// from the try body -- but performance isn't an issue so this is acceptable
|
||
|
|
// because it is so darned convenient.
|
||
|
|
//
|
||
|
|
try {
|
||
|
|
while(1) {
|
||
|
|
//
|
||
|
|
// Skip whitespace. If at end of file, then this is a DOS config.sys.
|
||
|
|
//
|
||
|
|
while((pFile < pFileEnd) && strchr(" \r\n\t",*pFile)) {
|
||
|
|
pFile++;
|
||
|
|
}
|
||
|
|
if(pFile == pFileEnd) {
|
||
|
|
return(TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Find the end of the current line.
|
||
|
|
//
|
||
|
|
pLineEnd = pFile;
|
||
|
|
while((pLineEnd < pFileEnd) && !strchr("\r\n",*pLineEnd)) {
|
||
|
|
pLineEnd++;
|
||
|
|
}
|
||
|
|
|
||
|
|
LineLen = pLineEnd - pFile;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Now check the line against known non-DOS config.sys keywords.
|
||
|
|
//
|
||
|
|
for(i=0; Keywords[i]; i++) {
|
||
|
|
|
||
|
|
KeyLen = strlen(Keywords[i]);
|
||
|
|
|
||
|
|
if((KeyLen <= LineLen) && !_strnicmp(pFile,Keywords[i],KeyLen)) {
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pFile = pLineEnd;
|
||
|
|
}
|
||
|
|
} finally {
|
||
|
|
|
||
|
|
SpUnmapFile(SectionHandle,ViewBase);
|
||
|
|
ZwClose(FileHandle);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PUCHAR
|
||
|
|
SpGetDosPath(
|
||
|
|
IN PDISK_REGION Region
|
||
|
|
)
|
||
|
|
{
|
||
|
|
WCHAR OpenPath[512];
|
||
|
|
HANDLE FileHandle,SectionHandle;
|
||
|
|
ULONG FileSize;
|
||
|
|
PVOID ViewBase;
|
||
|
|
PUCHAR pFile,pFileEnd,pLineEnd;
|
||
|
|
PUCHAR PathSpec;
|
||
|
|
ULONG l,i;
|
||
|
|
NTSTATUS Status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Form name of autoexec.bat.
|
||
|
|
//
|
||
|
|
SpNtNameFromRegion(Region,OpenPath,sizeof(OpenPath),PartitionOrdinalCurrent);
|
||
|
|
SpConcatenatePaths(OpenPath,L"autoexec.bat");
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open and map the file.
|
||
|
|
//
|
||
|
|
FileHandle = 0;
|
||
|
|
Status = SpOpenAndMapFile(
|
||
|
|
OpenPath,
|
||
|
|
&FileHandle,
|
||
|
|
&SectionHandle,
|
||
|
|
&ViewBase,
|
||
|
|
&FileSize,
|
||
|
|
FALSE
|
||
|
|
);
|
||
|
|
|
||
|
|
if(!NT_SUCCESS(Status)) {
|
||
|
|
return(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
pFile = ViewBase;
|
||
|
|
pFileEnd = pFile + FileSize;
|
||
|
|
|
||
|
|
PathSpec = SpMemAlloc(1);
|
||
|
|
*PathSpec = 0;
|
||
|
|
|
||
|
|
#define SKIP(s) while((pFile<pFileEnd)&&strchr(s,*pFile))pFile++;if(pFile==pFileEnd)return(PathSpec)
|
||
|
|
//
|
||
|
|
// This code must guard access to the autoexec.bat buffer because the
|
||
|
|
// buffer is memory mapped (an i/o error would raise an exception).
|
||
|
|
// This code could be structured better, as it now works by returning
|
||
|
|
// from the try body -- but performance isn't an issue so this is acceptable
|
||
|
|
// because it is so darned convenient.
|
||
|
|
//
|
||
|
|
try {
|
||
|
|
while(1) {
|
||
|
|
//
|
||
|
|
// Skip whitespace. If at end of file, then we're done.
|
||
|
|
//
|
||
|
|
SKIP(" \t\r\n");
|
||
|
|
|
||
|
|
//
|
||
|
|
// Find the end of the current line.
|
||
|
|
//
|
||
|
|
pLineEnd = pFile;
|
||
|
|
while((pLineEnd < pFileEnd) && !strchr("\r\n",*pLineEnd)) {
|
||
|
|
pLineEnd++;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Skip the no echo symbol if present.
|
||
|
|
//
|
||
|
|
if(*pFile == '@') {
|
||
|
|
pFile++;
|
||
|
|
}
|
||
|
|
SKIP(" \t");
|
||
|
|
|
||
|
|
//
|
||
|
|
// See if the line starts with "set." If so, skip it.
|
||
|
|
// To be meaningful, the line must have at least 10
|
||
|
|
// characters ("set path=x" is 10 chars).
|
||
|
|
//
|
||
|
|
if((pLineEnd - pFile >= 10) && !_strnicmp(pFile,"set",3)) {
|
||
|
|
pFile += 3;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Skip whitespace.
|
||
|
|
//
|
||
|
|
SKIP(" \t");
|
||
|
|
|
||
|
|
//
|
||
|
|
// See if the line has "path" -- if so, we're in business.
|
||
|
|
// To be meaningful, the line must have at least 5 characters
|
||
|
|
// ("path x" or "path=x" is 6 chars).
|
||
|
|
//
|
||
|
|
if((pLineEnd - pFile >= 5) && !_strnicmp(pFile,"path",4)) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// Skip PATH
|
||
|
|
//
|
||
|
|
pFile += 4;
|
||
|
|
|
||
|
|
SKIP(" \t");
|
||
|
|
if(*pFile == '=') {
|
||
|
|
pFile++;
|
||
|
|
}
|
||
|
|
SKIP(" \t");
|
||
|
|
|
||
|
|
//
|
||
|
|
// Strip off trailing spaces.
|
||
|
|
//
|
||
|
|
while(strchr(" \t",*(pLineEnd-1))) {
|
||
|
|
pLineEnd--;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// The rest of the line is the path. Append it to
|
||
|
|
// what we have so far.
|
||
|
|
//
|
||
|
|
l = strlen(PathSpec);
|
||
|
|
PathSpec = SpMemRealloc(PathSpec,pLineEnd-pFile+l+2);
|
||
|
|
if(l) {
|
||
|
|
PathSpec[l++] = ';';
|
||
|
|
}
|
||
|
|
for(i=0; i<(ULONG)(pLineEnd-pFile); i++) {
|
||
|
|
PathSpec[l+i] = pFile[i];
|
||
|
|
}
|
||
|
|
PathSpec[l+i] = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
pFile = pLineEnd;
|
||
|
|
}
|
||
|
|
} finally {
|
||
|
|
|
||
|
|
SpUnmapFile(SectionHandle,ViewBase);
|
||
|
|
ZwClose(FileHandle);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
SpRemoveWin31(
|
||
|
|
IN PDISK_REGION NtPartitionRegion,
|
||
|
|
IN LPCWSTR Sysroot
|
||
|
|
)
|
||
|
|
{
|
||
|
|
LPWSTR p,q;
|
||
|
|
|
||
|
|
p = SpMemAlloc(500);
|
||
|
|
q = SpMemAlloc(500);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Rename win.com to wincom.w31. Delete wincom.w31 first.
|
||
|
|
//
|
||
|
|
SpNtNameFromRegion(NtPartitionRegion,p,500,PartitionOrdinalCurrent);
|
||
|
|
SpConcatenatePaths(p,Sysroot);
|
||
|
|
wcscpy(q,p);
|
||
|
|
|
||
|
|
SpConcatenatePaths(p,L"WIN.COM");
|
||
|
|
SpConcatenatePaths(q,L"WINCOM.W31");
|
||
|
|
|
||
|
|
SpDeleteFile(q,NULL,NULL);
|
||
|
|
SpRenameFile(p,q,FALSE);
|
||
|
|
|
||
|
|
SpMemFree(q);
|
||
|
|
SpMemFree(p);
|
||
|
|
}
|