Method seek

src/jrd/jrd.cpp:4209–4247

int JBlob::seek(CheckStatusWrapper* user_status, int mode, int offset)
{
/**************************************
 *
 *	g d s _ $ s e e k _ b l o b
 *
 **************************************
 *
 * Functional description
 *	Seek a stream blob.
 *
 **************************************/
	int result = -1;

	try
	{
		EngineContextHolder tdbb(user_status, this, FB_FUNCTION);
		check_database(tdbb);

		try
		{
			result = getHandle()->BLB_lseek(mode, offset);
		}
		catch (const Exception& ex)
		{
			transliterateException(tdbb, ex, user_status, "JBlob::seek");
			return result;
		}
	}
	catch (const Exception& ex)
	{
		ex.stuffException(user_status);
		return result;
	}

	successful_completion(user_status);

	return result;
}


void JRequest::send(CheckStatusWrapper* user_status, int level, unsigned int msg_type,