Limits (cont)

In shell:
  $ ulimit -t 
  unlimited
  $ ulimit -t 10
  $ ulimit -t
  10
  
In C:
  struct rlimit mylimit;
  
  mylimit.rlim_cur = 10;   /* time in seconds */
  mylimit.rlim_max = 20;
  
  setrlimit( RLIMIT_CPU, &mylimit );
  
  getrlimit(RLIMIT_CPU, &mylimit );
  printf("current %d    maximum %d\n", mylimit.rlim_cur, mylimit.rlim_max );

/etc/security/limits.conf read upon login via PAM.