# File activesupport/lib/active_support/core_ext/process/daemon.rb, line 3
 3:     def self.daemon(nochdir = nil, noclose = nil)
 4:       exit if fork                     # Parent exits, child continues.
 5:       Process.setsid                   # Become session leader.
 6:       exit if fork                     # Zap session leader. See [1].
 7: 
 8:       unless nochdir
 9:         Dir.chdir "/"                  # Release old working directory.
10:       end
11: 
12:       File.umask 0000                  # Ensure sensible umask. Adjust as needed.
13: 
14:       unless noclose
15:         STDIN.reopen "/dev/null"       # Free file descriptors and
16:         STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
17:         STDERR.reopen '/dev/null', 'a'
18:       end
19: 
20:       trap("TERM") { exit }
21: 
22:       return 0
23:     end