style: Suppress Style/FileNull cop

lib/god/cli/run.rb

@@ -111,13 +111,13 @@ def run_daemonized
       def setup_logging
         log_file = God.log_file
         log_file = File.expand_path(@options[:log]) if @options[:log]
-        log_file = '/dev/null' if !log_file && @options[:daemonize]
+        log_file = File::NULL if !log_file && @options[:daemonize]
         return unless log_file
 
         puts "Sending output to log file: #{log_file}" unless @options[:daemonize]
 
         # reset file descriptors
-        $stdin.reopen '/dev/null'
+        $stdin.reopen File::NULL
         $stdout.reopen(log_file, 'a')
         $stderr.reopen $stdout
         $stdout.sync = true

lib/god/process.rb

@@ -9,7 +9,7 @@ class Process
                   :stop_timeout, :stop_signal, :umask
 
     def initialize
-      self.log = '/dev/null'
+      self.log = File::NULL
 
       @pid_file = nil
       @tracking_pid = true
@@ -139,7 +139,7 @@ def valid?
           applog(self, :error, "CHROOT directory '#{chroot}' does not exist")
         end
 
-        unless File.exist?(File.join(chroot, '/dev/null'))
+        unless File.exist?(File.join(chroot, File::NULL))
           valid = false
           applog(self, :error, "CHROOT directory '#{chroot}' does not contain '/dev/null'")
         end
@@ -311,7 +311,7 @@ def spawn(command)
         self.dir ||= '/'
         Dir.chdir self.dir
         $0 = command
-        $stdin.reopen '/dev/null'
+        $stdin.reopen File::NULL
         if log_cmd
           $stdout.reopen IO.popen(log_cmd, 'a')
         else

test/test_process.rb

@@ -116,7 +116,7 @@ def test_valid_should_return_true_with_chroot_and_valid_log
 
     File.expects(:exist?).with(@p.chroot).returns(true)
     File.expects(:exist?).with(@p.log).returns(true)
-    File.expects(:exist?).with("#{@p.chroot}/dev/null").returns(true)
+    File.expects(:exist?).with("#{@p.chroot}#{File::NULL}").returns(true)
 
     File.stubs(:writable?).with('/foo.log').returns(true)