hd.c

/*
 * Hooking functions to make debugging easier
 * gcc -shared helpdebug.c -o hd.so
 * gdb > set environment LD_PRELOAD ./hd.so
 *
 */

#include <stdio.h>
int ptrace(int i, int j, int k, int l)
{
    printf(" ptrace(%i, %i, %i, %i), returning -1\n", i, j, k, l);
    return 0;
}