PLT redirection through shared object injection into a running process

/*
* Copyright (c) 2008, Quake2
* All rights reserved.

* Redistribution and use in source and binary forms, with or without 
* modification, are permitted provided that the following conditions are met:
*
*  * Redistributions of source code must retain the above copyright notice, 
*    this list of conditions and the following disclaimer.
*  * Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*  * Neither the name of the author nor the names of its contributors may be
*    used to endorse or promote products derived from this software without
*    specific prior written permission.
*    
*  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
*  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
*  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
*  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
*  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
*  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
*  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
*  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
*  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
*  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
*  THE POSSIBILITY OF SUCH DAMAGE.
*
* */

#include <stdio.h>
#include "libdummy.h"

int main()
{
	int a,b;
	int res = 0;

	printf("Enter the first number: ");
	scanf("%d", &a);
	printf("Enter the second number: ");
	scanf("%d", &b);
	res = dummy_add(a,b);
	printf("Result is: %d\n", res);
	return 0;
}