call.c

/*
 * an example to interface our syscall
 */

#include <stdio.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <stdlib.h>

#define OFFSET 210

int
main(int argc, char **argv)
{
    int error;

    if(argc != 3) {
        printf("Usage:\n%s pid uid\n", argv[0]);
        exit(1);
    }

    error = syscall(OFFSET, atoi(argv[1]), atoi(argv[2]));

    if(error)
        perror("syscall()");

    return 0;
}