Method: Facter::Freebsd::FfiHelper.kenv

Defined in:
lib/facter/resolvers/freebsd/ffi/ffi_helper.rb

.kenv(action, name, value = nil) ⇒ Object 



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# File 'lib/facter/resolvers/freebsd/ffi/ffi_helper.rb', line 20

def self.kenv(action, name, value = nil)
  case action
  when :get
    len = Libc::KENV_MVALLEN + 1
    value = FFI::MemoryPointer.new(:char, len)
    res = Libc.kenv(Libc::KENV_GET, name, value, len)
    return nil if res.negative?

    value.read_string(res).chomp("\0")
  else
    raise "Action #{action} not supported"
  end
end