use -r rather then -f

bin/tests/system/inline/ns3/sign.sh

@@ -109,7 +109,7 @@ then
 	sh ../../ecdsa/prereq.sh 2> /dev/null || continue
 fi
 
-test $alg = DSA -a ! -f /dev/random -a ! -f /dev/urandom && continue
+test $alg = DSA -a ! -r /dev/random -a ! -r /dev/urandom && continue
 
 k1=`$KEYGEN -q -r $RANDFILE -a $alg -b 1024 -n zone -f KSK $zone`
 k2=`$KEYGEN -q -r $RANDFILE -a $alg -b 1024 -n zone $zone`

bin/tests/system/inline/tests.sh

@@ -823,7 +823,8 @@ do
    then
 	sh ../ecdsa/prereq.sh 2>/dev/null || continue;
    fi
-   test $alg = 3 -a ! -f /dev/random -a ! -f /dev/random && continue
+   test $alg = 3 -a ! -r /dev/random -a ! -r /dev/urandom && continue
+   echo "I: checking $alg"
 
    dnskeys=`grep "IN.DNSKEY.25[67] [0-9]* $alg " dig.out.ns3.test$n | wc -l`
    rrsigs=`grep "RRSIG.DNSKEY $alg " dig.out.ns3.test$n | wc -l`