components/entropy.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdio.h>
   3
   4 #include "../util.h"
   5
   6 const char *
   7 entropy(void)
   8 {
   9         int num;
  10
  11         return (pscanf("/proc/sys/kernel/random/entropy_avail", "%d", &num) == 1) ?
  12                        bprintf("%d", num) : NULL;
  13 }