misc.c File Reference

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

Include dependency graph for misc.c:

Go to the source code of this file.

Macros
#define	NDEBUG

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

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file misc.c.

Function Documentation

DuplicateUnicodeString()

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

Definition at line 19 of file misc.c.

{
    USHORT DestMaxLength;
 
    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
    {
        DestMaxLength = SourceString->Length;
 
        if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
            DestMaxLength += sizeof(UNICODE_NULL);
 
        DestinationString->Buffer = ExAllocatePoolWithTag(PagedPool, DestMaxLength, FDC_TAG);
        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(), FdcPdoQueryId(), PciCreateCompatibleIDsString(), PciCreateHardwareIDsString(), ReportDetectedDevice(), SearchForLegacyDrivers(), and SerenumPdoQueryId().