# File activesupport/lib/active_support/core_ext/process/daemon.rb, line 2
 2:   def self.daemon(nochdir = nil, noclose = nil)
 3:     exit if fork                     # Parent exits, child continues.
 4:     Process.setsid                   # Become session leader.
 5:     exit if fork                     # Zap session leader. See [1].
 6: 
 7:     unless nochdir
 8:       Dir.chdir "/"                  # Release old working directory.
 9:     end
10: 
11:     File.umask 0000                  # Ensure sensible umask. Adjust as needed.
12: 
13:     unless noclose
14:       STDIN.reopen "/dev/null"       # Free file descriptors and
15:       STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
16:       STDERR.reopen '/dev/null', 'a'
17:     end
18: 
19:     trap("TERM") { exit }
20: 
21:     return 0
22:   end