File: util.rb

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ruby-raemon 0.3.0%2Bgit.2012.05.18.b78eaae57c-1
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module Raemon
  class Util
    # Creates and returns a new File object. The File is unlinked
    # immediately, switched to binary mode, and userspace output
    # buffering is disabled. Method pulled from Unicorn library.
    def self.tmpio
      begin
        fp = File.open(File.join(Dir.tmpdir, rand.to_s),
                       File::RDWR | File::CREAT | File::EXCL, 0600)
      rescue Errno::EEXIST
        retry
      end

      File.unlink(fp.path)
      fp.binmode
      fp.sync = true
      fp
    end
  end
end