2 files changed, 76 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/os-specific/linux/rfkill/rfkill-hook.sh b/nixpkgs/pkgs/os-specific/linux/rfkill/rfkill-hook.sh
new file mode 100755
index 000000000000..75716e40daee
--- /dev/null
+++ b/nixpkgs/pkgs/os-specific/linux/rfkill/rfkill-hook.sh
@@ -0,0 +1,19 @@
+#!@shell@
+
+# Executes a hook in case of a change to the
+# rfkill state. The hook can be passed as
+# environment variable, or present as executable
+# file.
+
+if [ -z "$RFKILL_STATE" ]; then
+  echo "rfkill-hook: error: RFKILL_STATE variable not set"
+  exit 1
+fi
+
+if [ -x /run/current-system/etc/rfkill.hook ]; then
+  exec /run/current-system/etc/rfkill.hook
+elif [ ! -z "$RFKILL_HOOK" ]; then
+  exec $RFKILL_HOOK
+else
+  echo "rfkill-hook: $RFKILL_STATE"
+fi
diff --git a/nixpkgs/pkgs/os-specific/linux/rfkill/udev.nix b/nixpkgs/pkgs/os-specific/linux/rfkill/udev.nix
new file mode 100644
index 000000000000..53cbf68330c6
--- /dev/null
+++ b/nixpkgs/pkgs/os-specific/linux/rfkill/udev.nix
@@ -0,0 +1,57 @@
+{ lib, stdenv, substituteAll }:
+
+# Provides a facility to hook into rfkill changes.
+#
+# Exemplary usage:
+#
+# Add this package to udev.packages, e.g.:
+#   udev.packages = [ pkgs.rfkill_udev ];
+#
+# Add a hook script in the managed etc directory, e.g.:
+#   etc."rfkill.hook" = {
+#     mode = "0755";
+#     text = ''
+#       #!${pkgs.runtimeShell}
+#
+#       if [ "$RFKILL_STATE" -eq "1" ]; then
+#         exec ${config.system.build.upstart}/sbin/initctl emit -n antenna-on
+#       else
+#         exec ${config.system.build.upstart}/sbin/initctl emit -n antenna-off
+#       fi
+#     '';
+#   }
+
+# Note: this package does not need the binaries
+# in the rfkill package.
+
+let
+  rfkillHook =
+    substituteAll {
+      inherit (stdenv) shell;
+      isExecutable = true;
+      src = ./rfkill-hook.sh;
+    };
+in stdenv.mkDerivation {
+  name = "rfkill-udev";
+
+  dontUnpack = true;
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p "$out/etc/udev/rules.d/";
+    cat > "$out/etc/udev/rules.d/90-rfkill.rules" << EOF
+      SUBSYSTEM=="rfkill", ATTR{type}=="wlan", RUN+="$out/bin/rfkill-hook.sh"
+    EOF
+
+    mkdir -p "$out/bin/";
+    cp ${rfkillHook} "$out/bin/rfkill-hook.sh"
+  '';
+
+  meta = with lib; {
+    homepage = "http://wireless.kernel.org/en/users/Documentation/rfkill";
+    description = "Rules+hook for udev to catch rfkill state changes";
+    mainProgram = "rfkill-hook.sh";
+    platforms = platforms.linux;
+    license = licenses.mit;
+  };
+}