modprobe_module

in cookbooks/fb_modprobe/resources/module.rb [26:73]

• 37 lines of code
• 12 McCabe index (conditional complexity)

  def modprobe_module(new_resource, unload)
    module_name = new_resource.module_name
    params = [new_resource.module_params].flatten.compact
    timeout = new_resource.timeout
    verbose = new_resource.verbose
    fallback = new_resource.fallback

    flags = []
    flags << '-v' if verbose
    flags << '-r' if unload

    
    
    
    if ::File.exist?("/sys/module/#{module_name}") &&
        !::File.exist?("/sys/module/#{module_name}/initstate")
      ::Chef::Log.warn(
        "fb_modprobe called on built-in module '#{module_name}'",
      )
      unless params.empty?
        fail <<-FAIL
          Cannot set parameters for built-in module '#{module_name}'!
          Parameters for built-in modules must be passed on the kernel cmdline.
          Prefix the parameter with the module name and a dot.
          Examples: "ipv6.autoconf=1", "mlx4_en.udp_rss=1"
        FAIL
      end

      return true
    end

    command = ['/sbin/modprobe'] + flags + [module_name] + params

    
    if fallback && unload
      command << '||'
      command << 'rmmod'
      command << '-v' if verbose
      command << module_name
    end

    execute command.join(' ') do
      action :run
      notifies :reload, 'ohai[reload kernel]', :immediately
      timeout timeout
    end
  end