frandom: very fast random number generator kernel module

nixos support via services.frandom.enable

svn path=/nixpkgs/trunk/; revision=32078

1 files changed, 44 insertions, 0 deletions

diff --git a/pkgs/os-specific/linux/frandom/default.nix b/pkgs/os-specific/linux/frandom/default.nix
new file mode 100644
index 000000000000..9f07e7c8eb09
--- /dev/null
+++ b/pkgs/os-specific/linux/frandom/default.nix
@@ -0,0 +1,44 @@
+{ stdenv, fetchurl, kernel }:
+
+stdenv.mkDerivation rec {
+  name = "frandom-1.1";
+
+  src = fetchurl {
+    url = "http://sourceforge.net/projects/frandom/files/${name}.tar.gz";
+    sha256 = "15rgyk4hfawqg7z1spk2xlk1nn6rcdls8gdhc70f91shrc9pvlls";
+  };
+
+  preBuild = ''
+    kernelVersion=$(cd ${kernel}/lib/modules && ls)
+    substituteInPlace Makefile \
+      --replace "\$(shell uname -r)" "$kernelVersion" \
+      --replace "/lib/modules" "${kernel}/lib/modules"
+  '';
+ 
+  installPhase = ''
+    kernelVersion=$(cd ${kernel}/lib/modules && ls)
+    ensureDir $out/lib/modules/$kernelVersion/misc
+    cp frandom.ko $out/lib/modules/$kernelVersion/misc
+
+    ensureDir $out/lib/udev/rules.d
+    tee $out/lib/udev/rules.d/10-frandom.rules <<-EOF
+    #
+    # These are the rules for the frandom devices. In theory, we could let
+    # udev's catch-all rule create the /dev node based upon the kernel name,
+    # which gives correct result, except that the default MODE set in
+    # 50-udev.rules (0600) is too restrictive.
+    #
+    KERNEL=="[ef]random", MODE="444", OPTIONS="last_rule"
+    EOF
+  '';
+
+  buildInputs = [];
+
+  meta = {
+    description = "A very fast random number generator kernel module.";
+    homepage = http://frandom.sourceforge.net/;
+    license = "GPLv2";
+    maintainers = [ stdenv.lib.maintainers.bluescreen303 ];
+  };
+}
+