class sysctl {
  # root exploit fix, see http://wiki.debian.org/mmap_min_addr
  # TODO: remove in the future or use a sysctl puppet module
  file { "/etc/sysctl.d/mmap_min_addr.conf":
    owner   => "root",
    group   => "root",
    mode    => 0644,
    ensure  => present,
    content => "vm.mmap_min_addr = 4096\n",
  }

  # see http://www.linux-vserver.org/Frequently_Asked_Questions
  file { "/etc/sysctl.d/net.ipv4.conf.all.promote_secondaries.conf":
    owner   => "root",
    group   => "root",
    mode    => 0644,
    ensure  => present,
    content => "net.ipv4.conf.all.promote_secondaries = 1\n",
  }

  exec { "/etc/init.d/procps restart":
    subscribe   => File["/etc/sysctl.d/mmap_min_addr.conf", "/etc/sysctl.d/net.ipv4.conf.all.promote_secondaries.conf"],
    refreshonly => true,
  }

  $printk_levels = '3 4 1 3'

  file { "/etc/sysctl.d/kernel.printk.conf":
    owner   => "root",
    group   => "root",
    mode    => 0644,
    ensure  => present,
    content => "kernel.printk = $printk_levels\n",
  }

  exec { "/bin/echo '$printk_levels' > /proc/sys/kernel/printk":
    subscribe   => File["/etc/sysctl.d/kernel.printk.conf"],
    refreshonly => true,
  }
}

class sysctl::laptop {
  file { "/etc/sysctl.d/madwifi.conf":
    owner   => "root",
    group   => "root",
    mode    => 0644,
    source  => "puppet://$server/modules/nodo/etc/sysctl.d/madwifi.conf",
    ensure  => $lsbdistcodename ? {
      'lenny' => present,
      default => absent,
    },
  }
}

class sysctl::appliance {
  case $kernel_panic {
    '': { $kernel_panic = "20" }
  }

  file { "/etc/sysctl.d/kernel.panic.conf":
    owner   => "root",
    group   => "root",
    mode    => 0644,
    ensure  => present,
    content => "kernel.panic = $kernel_panic\n",
  }

  exec { "/bin/echo '$kernel_panic' > /proc/sys/kernel/panic":
    subscribe   => File["/etc/sysctl.d/kernel.panic.conf"],
    refreshonly => true,
  }
}