green.c File Reference

#include "green.h"
#include <debug.h>

Include dependency graph for green.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Functions
VOID NTAPI	DriverUnload (IN PDRIVER_OBJECT DriverObject)
NTSTATUS NTAPI	DriverEntry (IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING RegistryPath)
NTSTATUS	GreenDuplicateUnicodeString (IN ULONG Flags, IN PCUNICODE_STRING SourceString, OUT PUNICODE_STRING DestinationString)

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 11 of file green.c.

Function Documentation

DriverEntry()

NTSTATUS NTAPI DriverEntry	(	IN PDRIVER_OBJECT	DriverObject,
		IN PUNICODE_STRING	RegistryPath
	)

Definition at line 24 of file green.c.

{
    PGREEN_DRIVER_EXTENSION DriverExtension;
    ULONG i;
    NTSTATUS Status;
 
    Status = IoAllocateDriverObjectExtension(
        DriverObject,
        DriverObject,
        sizeof(GREEN_DRIVER_EXTENSION),
        (PVOID*)&DriverExtension);
    if (!NT_SUCCESS(Status))
    {
        DPRINT("IoAllocateDriverObjectExtension() failed with status 0x%08lx\n", Status);
        return Status;
    }
    RtlZeroMemory(DriverExtension, sizeof(GREEN_DRIVER_EXTENSION));
 
    Status = GreenDuplicateUnicodeString(
        0,
        RegistryPath,
        &DriverExtension->RegistryPath);
    if (!NT_SUCCESS(Status))
    {
        DPRINT("GreenDuplicateUnicodeString() failed with status 0x%08lx\n", Status);
        return Status;
    }
 
    Status = ReadRegistryEntries(RegistryPath, DriverExtension);
    if (!NT_SUCCESS(Status))
    {
        DPRINT("ReadRegistryEntries() failed with status 0x%08lx\n", Status);
        return Status;
    }
 
    DriverObject->DriverUnload = DriverUnload;
    DriverObject->DriverExtension->AddDevice = GreenAddDevice;
 
    for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
        DriverObject->MajorFunction[i] = GreenDispatch;
 
    return STATUS_SUCCESS;
}

DriverUnload()

VOID NTAPI DriverUnload

(

IN PDRIVER_OBJECT

DriverObject

)

Definition at line 15 of file green.c.

{
    // nothing to do here yet
}

GreenDuplicateUnicodeString()

NTSTATUS GreenDuplicateUnicodeString	(	IN ULONG	Flags,
		IN PCUNICODE_STRING	SourceString,
		OUT PUNICODE_STRING	DestinationString
	)

Definition at line 71 of file green.c.

{
    if (SourceString == NULL || DestinationString == NULL
     || SourceString->Length > SourceString->MaximumLength
     || (SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL)
     || Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING || Flags >= 4)
    {
        return STATUS_INVALID_PARAMETER;
    }
 
 
    if ((SourceString->Length == 0)
     && (Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE |
                   RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING)))
    {
        DestinationString->Length = 0;
        DestinationString->MaximumLength = 0;
        DestinationString->Buffer = NULL;
    }
    else
    {
        USHORT DestMaxLength = SourceString->Length;
 
        if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
            DestMaxLength += sizeof(UNICODE_NULL);
 
        DestinationString->Buffer = ExAllocatePool(PagedPool, DestMaxLength);
        if (DestinationString->Buffer == NULL)
            return STATUS_NO_MEMORY;
 
        RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length);
        DestinationString->Length = SourceString->Length;
        DestinationString->MaximumLength = DestMaxLength;
 
        if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
            DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0;
    }
 
    return STATUS_SUCCESS;
}

Referenced by DriverEntry(), and GreenQueryId().