#define PAGES 10

   #include <asm/page.h>
   #include <sys/mman.h>
   #include <unistd.h>
   #include <stdio.h>
   #include <fcntl.h>
   #include <sys/ptrace.h>

   int main() {
     int ad1,ad2,zer,mem,pid,i;
     zer=open("/dev/zero",O_RDONLY);
     ad1=(int)mmap(0,PAGES*PAGE_SIZE,0,MAP_PRIVATE,zer,0);
     pid=getpid();
     if (!fork()) {
       char p[64];
       ptrace(PTRACE_ATTACH,pid,0,0);
       sleep(1);
       sprintf(p,"/proc/%d/mem",pid);
       mem=open(p,O_RDONLY);
       ad2=(int)mmap(0,PAGES*PAGE_SIZE,PROT_READ,MAP_PRIVATE,mem,ad1);
       write(1,(char*)ad2,PAGES*PAGE_SIZE);
     }
     sleep(100);
     return 0;
   }