* Copyright 2003, Axel Dörfler, axeld@pinc-software.de.
* All rights reserved. Distributed under the terms of the MIT License.
*/
#include "Handle.h"
#include <SupportDefs.h>
#include <platform/openfirmware/openfirmware.h>
#include <util/kernel_cpp.h>
Handle::Handle(intptr_t handle, bool takeOwnership)
:
fHandle(handle),
fOwnHandle(takeOwnership)
{
}
Handle::Handle(void)
:
fHandle(0)
{
}
Handle::~Handle()
{
if (fOwnHandle)
of_close(fHandle);
}
void
Handle::SetHandle(intptr_t handle, bool takeOwnership)
{
if (fHandle && fOwnHandle)
of_close(fHandle);
fHandle = handle;
fOwnHandle = takeOwnership;
}
ssize_t
Handle::ReadAt(void *cookie, off_t pos, void *buffer, size_t bufferSize)
{
if (pos == -1 || of_seek(fHandle, pos) != OF_FAILED)
return of_read(fHandle, buffer, bufferSize);
return B_ERROR;
}
ssize_t
Handle::WriteAt(void *cookie, off_t pos, const void *buffer, size_t bufferSize)
{
if (pos == -1 || of_seek(fHandle, pos) != OF_FAILED)
return of_write(fHandle, buffer, bufferSize);
return B_ERROR;
}
off_t
Handle::Size() const
{
return 1024LL * 1024 * 1024 * 1024;
}
