Adding xfs support at supportedFilesystems

svn path=/nixos/trunk/; revision=33311

modules/module-list.nix

@@ -208,6 +208,7 @@
   ./tasks/filesystems/nfs.nix
   ./tasks/filesystems/reiserfs.nix
   ./tasks/filesystems/vfat.nix
+  ./tasks/filesystems/xfs.nix
   ./tasks/kbd.nix
   ./tasks/lvm.nix
   ./tasks/network-interfaces.nix

modules/tasks/filesystems/xfs.nix

@@ -0,0 +1,29 @@
+{ config, pkgs, ... }:
+
+with pkgs.lib;
+
+let
+
+  inInitrd = any (fs: fs == "xfs") config.boot.initrd.supportedFilesystems;
+
+in
+
+{
+  config = mkIf (any (fs: fs == "xfs") config.boot.supportedFilesystems) {
+
+    system.fsPackages = [ pkgs.xfsprogs ];
+
+    boot.initrd.kernelModules = mkIf inInitrd [ "xfs" ];
+
+    boot.initrd.extraUtilsCommands = mkIf inInitrd
+      ''
+        cp -v ${pkgs.xfsprogs}/sbin/fsck.xfs $out/bin
+      '';
+
+    # Trick just to set 'sh' after the extraUtils nuke-refs.
+    boot.initrd.extraUtilsCommandsTest = mkIf inInitrd
+      ''
+        sed -i -e 's,^#!.*,#!'$out/bin/sh, $out/bin/fsck.xfs
+      '';
+  };
+}