Added Ruby 1.8 implementation of Process.daemon

activesupport/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added Ruby 1.8 implementation of Process.daemon
+
 * Duration #since and #ago with no argument (e.g., 5.days.ago) return TimeWithZone when config.time_zone is set. Introducing Time.current, which returns Time.zone.now if config.time_zone is set, otherwise just returns Time.now [Geoff Buesing]
 
 * Time#since behaves correctly when passed a Duration. Closes #11527 [kemiller]

activesupport/lib/active_support/core_ext/kernel/daemonizing.rb

@@ -2,14 +2,6 @@ module Kernel
   # Turns the current script into a daemon process that detaches from the console.
   # It can be shut down with a TERM signal.
   def daemonize
-    exit if fork                   # Parent exits, child continues.
-    Process.setsid                 # Become session leader.
-    exit if fork                   # Zap session leader. See [1].
-    Dir.chdir "/"                  # Release old working directory.
-    File.umask 0000                # Ensure sensible umask. Adjust as needed.
-    STDIN.reopen "/dev/null"       # Free file descriptors and
-    STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
-    STDERR.reopen STDOUT           # STDOUT/ERR should better go to a logfile.
-    trap("TERM") { exit }
+    Process.daemon
   end
-end
+end

activesupport/lib/active_support/core_ext/process.rb

@@ -0,0 +1 @@
+require 'active_support/core_ext/process/daemon'

activesupport/lib/active_support/core_ext/process/daemon.rb

@@ -0,0 +1,25 @@
+if RUBY_VERSION < "1.9"
+  module Process
+    def self.daemon(nochdir = nil, noclose = nil)
+      exit if fork                     # Parent exits, child continues.
+      Process.setsid                   # Become session leader.
+      exit if fork                     # Zap session leader. See [1].
+
+      unless nochdir
+        Dir.chdir "/"                  # Release old working directory.
+      end
+
+      File.umask 0000                  # Ensure sensible umask. Adjust as needed.
+
+      unless noclose
+        STDIN.reopen "/dev/null"       # Free file descriptors and
+        STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
+        STDERR.reopen '/dev/null', 'a'
+      end
+
+      trap("TERM") { exit }
+
+      return 0
+    end
+  end
+end