···

       
118
       
118
       
 
       
    bind("/", prefix);

     

       
119
       
119
       
 
       


     

       
120
       
120
       
 
       
    fail_if(chroot(prefix));

     

       
121
       
121
       
+
       
    fail_if(chdir("/"));

     

       
121
       
122
       
 
       
    fail_if(execvp(*argv, argv));

     

       
122
       
123
       
 
       
  }

     

       
123
       
124