try_openssl_rand.diff

diff --git a/src/crystal/system/random.cr b/src/crystal/system/random.cr
index e03cc6ca6..745d0300d 100644
--- a/src/crystal/system/random.cr
+++ b/src/crystal/system/random.cr
@@ -11,7 +11,7 @@ module Crystal::System::Random
 end
 
 {% if flag?(:linux) %}
-  require "./unix/getrandom"
+  require "./unix/urandom"
 {% elsif flag?(:openbsd) %}
   require "./unix/arc4random"
 {% elsif flag?(:unix) %}
diff --git a/src/crystal/system/unix/urandom.cr b/src/crystal/system/unix/urandom.cr
index f2998b772..be9eeba30 100644
--- a/src/crystal/system/unix/urandom.cr
+++ b/src/crystal/system/unix/urandom.cr
@@ -1,4 +1,5 @@
-{% skip_file unless flag?(:unix) && !flag?(:openbsd) && !flag?(:linux) %}
+{% skip_file unless flag?(:unix) && !flag?(:openbsd) %}
+require "openssl"
 
 module Crystal::System::Random
   @@initialized = false
@@ -19,7 +20,11 @@ module Crystal::System::Random
     init unless @@initialized
 
     if urandom = @@urandom
-      urandom.read_fully(buf)
+#      urandom.read_fully(buf)
+      out = LibCrypto.rand_bytes(buf, buf.size)
+      if out != 1
+        raise "ossl failed"
+      end
     else
       raise "Failed to access secure source to generate random bytes!"
     end