mirror of
https://github.com/reactos/reactos.git
synced 2024-07-05 04:06:22 +00:00
67 lines
2 KiB
C
67 lines
2 KiB
C
/*
|
|
* PROJECT: ReactOS Floppy Disk Controller Driver
|
|
* LICENSE: GNU GPLv2 only as published by the Free Software Foundation
|
|
* FILE: drivers/storage/fdc/fdc/misc.c
|
|
* PURPOSE: Misc Routines
|
|
* PROGRAMMERS: Eric Kohl
|
|
*/
|
|
|
|
/* INCLUDES *******************************************************************/
|
|
|
|
#include "fdc.h"
|
|
|
|
#define NDEBUG
|
|
#include <debug.h>
|
|
|
|
/* FUNCTIONS ******************************************************************/
|
|
|
|
NTSTATUS
|
|
DuplicateUnicodeString(
|
|
IN ULONG Flags,
|
|
IN PCUNICODE_STRING SourceString,
|
|
OUT PUNICODE_STRING DestinationString)
|
|
{
|
|
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;
|
|
}
|
|
|
|
/* EOF */
|