Leaked source code of windows server 2003
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

442 lines
11 KiB

/*++
Copyright (c) 1993 Microsoft Corporation
Module Name:
sploaddrv.c
Abstract:
Routines to load sets of device drivers for use during text setup.
Author:
Ted Miller (tedm) 13-November-1993
Revision History:
--*/
#include "spprecmp.h"
#pragma hdrstop
//
// Define type of routine used by the device driver set loader.
// Before each driver is loaded, this routine is called with
// a flag indicating whether the machine is an MCA machine and
// the shortname of the driver about to be loaded. If this routine
// returns FALSE, the driver is not loaded. If it returns TRUE,
// the driver is loaded.
//
typedef
BOOLEAN
(*PDRIVER_VERIFY_LOAD_ROUTINE) (
IN PVOID SifHandle,
IN BOOLEAN IsMcaMachine,
IN PWSTR DriverShortname
);
BOOLEAN
pSpVerifyLoadDiskDrivers(
IN PVOID SifHandle,
IN BOOLEAN IsMcaMachine,
IN PWSTR DriverShortname
)
{
UNREFERENCED_PARAMETER(SifHandle);
//
// Don't load fat if setupldr loaded floppy drivers.
//
if(!_wcsicmp(DriverShortname,L"Fat") && SetupParameters.LoadedFloppyDrivers) {
return(FALSE);
}
//
// On an MCA machine, don't load atdisk.
// On a non-MCA machine, don't load abiosdsk.
//
if(( IsMcaMachine && !_wcsicmp(DriverShortname,L"atdisk"))
|| (!IsMcaMachine && !_wcsicmp(DriverShortname,L"abiosdsk")))
{
return(FALSE);
}
//
// If we get this far, the driver should be loaded.
//
return(TRUE);
}
VOID
SpLoadDriverSet(
IN PVOID SifHandle,
IN PWSTR SifSectionName,
IN PWSTR SourceDevicePath,
IN PWSTR DirectoryOnSourceDevice,
IN PDRIVER_VERIFY_LOAD_ROUTINE VerifyLoad OPTIONAL
)
/*++
Routine Description:
Load a set of device drivers listed in a section in the setup
information file. The section is expected to be in the following form:
[SectionName.Load]
DriverShortname = DriverFilename
DriverShortname = DriverFilename
DriverShortname = DriverFilename
etc.
[SectionName]
DriverShortname = Description
DriverShortname = Description
DriverShortname = Description
etc.
The drivers will be loaded from the setup boot media, and errors
loading the drivers will be ignored.
Before loading each driver, a callback routine is called to verify
that the driver should actually be loaded. This allows the caller
to gain a fine degree of control over which drivers are loaded.
Arguments:
SifHandle - supplies handle to loaded setup information file.
SifSectionName - supplies name of section in setup information file
listing drivers to be laoded.
SourceDevicePath - supplies the device path in the nt namespace of
the device from which the drivers are to be loaded.
DirectoryOnSourceDevice - supplies the directory on the source device
from which the drivers are to be loaded.
VerifyLoad - if specified, supplies the address of a routine to be
called before each driver is loaded. The routine takes a flag
indicating whether the machine is an MCA machine, and the driver
shortname. If the routine returns false, the driver is not loaded.
If this parameter is not specified, all drivers in the section
will be loaded.
Return Value:
None.
--*/
{
BOOLEAN IsMcaMachine;
ULONG d,DriverLoadCount;
PWSTR DiskDesignator,PreviousDiskDesignator;
PWSTR DriverShortname,DriverFilename,DriverDescription;
PWSTR LoadSectionName;
NTSTATUS Status;
CLEAR_CLIENT_SCREEN();
SpDisplayStatusText(SP_STAT_PLEASE_WAIT,DEFAULT_STATUS_ATTRIBUTE);
//
// Form the .load section name.
//
LoadSectionName = SpMemAlloc((wcslen(SifSectionName)*sizeof(WCHAR))+sizeof(L".Load"));
wcscpy(LoadSectionName,SifSectionName);
wcscat(LoadSectionName,L".Load");
IsMcaMachine = FALSE;
//
// Set up some initial state.
//
PreviousDiskDesignator = L"";
//
// Determine the number of drivers to be loaded.
//
DriverLoadCount = SpCountLinesInSection(SifHandle,LoadSectionName);
for(d=0; d<DriverLoadCount; d++) {
PWSTR p;
//
// Get the driver shortname.
//
DriverShortname = SpGetKeyName(SifHandle,LoadSectionName,d);
if(!DriverShortname) {
SpFatalSifError(SifHandle,LoadSectionName,NULL,d,(ULONG)(-1));
}
//
// Determine whether we are really supposed to load this driver.
//
if((p = SpGetSectionLineIndex(SifHandle,LoadSectionName,d,2)) && !_wcsicmp(p,L"noload")) {
continue;
}
if(VerifyLoad && !VerifyLoad(SifHandle,IsMcaMachine,DriverShortname)) {
continue;
}
//
// Get a human-readable description for this driver.
//
DriverDescription = SpGetSectionLineIndex(SifHandle,SifSectionName,d,0);
if(!DriverDescription) {
SpFatalSifError(SifHandle,SifSectionName,NULL,d,0);
}
//
// Get the driver filename.
//
DriverFilename = SpGetSectionLineIndex(SifHandle,LoadSectionName,d,0);
if(!DriverFilename) {
SpFatalSifError(SifHandle,LoadSectionName,NULL,d,0);
}
//
// Determine the disk on which this driver resides.
//
DiskDesignator = SpLookUpValueForFile(
SifHandle,
DriverFilename,
INDEX_WHICHBOOTMEDIA,
TRUE
);
//
// Prompt for the disk containing the driver.
//
retryload:
if(_wcsicmp(DiskDesignator,PreviousDiskDesignator)) {
SpPromptForSetupMedia(
SifHandle,
DiskDesignator,
SourceDevicePath
);
PreviousDiskDesignator = DiskDesignator;
CLEAR_CLIENT_SCREEN();
SpDisplayStatusText(SP_STAT_PLEASE_WAIT,DEFAULT_STATUS_ATTRIBUTE);
}
//
// Attempt to load the driver.
//
Status = SpLoadDeviceDriver(
DriverDescription,
SourceDevicePath,
DirectoryOnSourceDevice,
DriverFilename
);
if(Status == STATUS_NO_MEDIA_IN_DEVICE) {
PreviousDiskDesignator = L"";
goto retryload;
}
}
SpMemFree(LoadSectionName);
}
VOID
SpLoadScsiClassDrivers(
IN PVOID SifHandle,
IN PWSTR SourceDevicePath,
IN PWSTR DirectoryOnSourceDevice
)
/*++
Routine Description:
Load scsi class drivers if setupldr has not already loaded them
and there are any miniport drivers loaded.
The drivers to be loaded are listed in [ScsiClass].
The section is expected to be in the following form:
[ScsiClass]
cdrom = "SCSI CD-ROM" ,scsicdrm.sys
floppy = "SCSI Floppy Disk",scsiflop.sys
disk = "SCSI Disk" ,scsidisk.sys
The drivers will be loaded from the setup boot media, and errors
loading the drivers will be ignored.
Arguments:
SifHandle - supplies handle to loaded setup information file.
SourceDevicePath - supplies the device path in the nt namespace of
the device from which the drivers are to be loaded.
DirectoryOnSourceDevice - supplies the directory on the source device
where the drivers are to be found.
Return Value:
None.
--*/
{
//
// If setupldr loaded scsi drivers, nothing to do.
// If there are no miniport drivers loaded, nothing to do.
//
if(!SetupParameters.LoadedScsi && LoadedScsiMiniportCount) {
SpLoadDriverSet(
SifHandle,
SIF_SCSICLASSDRIVERS,
SourceDevicePath,
DirectoryOnSourceDevice,
NULL
);
}
}
VOID
SpLoadDiskDrivers(
IN PVOID SifHandle,
IN PWSTR SourceDevicePath,
IN PWSTR DirectoryOnSourceDevice
)
/*++
Routine Description:
Load (non-scsi) disk class drivers and disk filesystems
if setupldr has not already loaded them.
The drivers to be loaded are listed in [DiskDrivers] and [FileSystems].
The section is expected to be in the following form:
[DiskDrivers]
atdisk = "ESDI/IDE Hard DIsk",atdisk.sys
abiosdsk = "Micro Channel Hard Disk",abiosdsk.sys
[FileSystems]
fat = "FAT File System",fastfat.sys
ntfs = "Windows NT File System (NTFS)",ntfs.sys
The drivers will be loaded from the setup boot media, and errors
loading the drivers will be ignored.
On MCA machines, atdisk will not be loaded.
On non-MCA machines, abiosdsk will not be loaded.
Arguments:
SifHandle - supplies handle to loaded setup information file.
SourceDevicePath - supplies the device path in the nt namespace of
the device from which the drivers are to be loaded.
DirectoryOnSourceDevice - supplies the directory on the source device
where the drivers are to be found.
Return Value:
None.
--*/
{
//
// If setupldr loaded disk drivers, nothing to do.
//
if(!SetupParameters.LoadedDiskDrivers) {
SpLoadDriverSet(
SifHandle,
SIF_DISKDRIVERS,
SourceDevicePath,
DirectoryOnSourceDevice,
pSpVerifyLoadDiskDrivers
);
}
//
// If setupldr loaded file systems, nothing to do.
//
if(!SetupParameters.LoadedFileSystems) {
SpLoadDriverSet(
SifHandle,
SIF_FILESYSTEMS,
SourceDevicePath,
DirectoryOnSourceDevice,
pSpVerifyLoadDiskDrivers
);
}
}
VOID
SpLoadCdRomDrivers(
IN PVOID SifHandle,
IN PWSTR SourceDevicePath,
IN PWSTR DirectoryOnSourceDevice
)
/*++
Routine Description:
Load the cd-rom filesystem if setupldr has not already loaded it.
The drivers to be loaded are listed in [CdRomDrivers].
The section is expected to be in the following form:
[CdRomDrivers]
cdfs = "CD-ROM File System",cdfs.sys
The drivers will be loaded from the setup boot media, and errors
loading the drivers will be ignored.
Arguments:
SifHandle - supplies handle to loaded setup information file.
SourceDevicePath - supplies the device path in the nt namespace of
the device from which the drivers are to be loaded.
DirectoryOnSourceDevice - supplies the directory on the source device
where the drivers are to be found.
Return Value:
None.
--*/
{
//
// If setupldr loaded cd-rom drivers, nothing to do.
//
if(!SetupParameters.LoadedCdRomDrivers) {
SpLoadDriverSet(
SifHandle,
SIF_CDROMDRIVERS,
SourceDevicePath,
DirectoryOnSourceDevice,
NULL
);
}
}