Add lib/capsicum/libc.rb

lib/capsicum.rb

@@ -4,40 +4,7 @@ require "capsicum/version"
 require "fiddle"
 
 module Capsicum
-  # @api private
-  module LibC
-    module_function
-
-    ##
-    # Provides a Ruby interface for cap_enter(2)
-    # @return [Integer]
-    def cap_enter
-      Fiddle::Function.new(
-        libc["cap_enter"],
-        [],
-        Fiddle::Types::INT
-      ).call
-    end
-
-    ##
-    # Provides a Ruby interface for cap_getmode(2)
-    # @param [Fiddle::Pointer] uintp
-    # @return [Integer]
-    def cap_getmode(uintp)
-      Fiddle::Function.new(
-        libc["cap_getmode"],
-        [Fiddle::Types::INTPTR_T],
-        Fiddle::Types::INT
-      ).call(uintp)
-    end
-
-    ##
-    # @api private
-    def libc
-      @libc ||= Fiddle.dlopen Dir["/lib/libc.*"].first
-    end
-  end
-
+  require_relative "capsicum/libc"
   module_function
 
   ##
@@ -47,7 +14,7 @@ module Capsicum
   # @raise [SystemCallError]
   #  Might raise a subclass of SystemCallError
   # @return [Boolean]
-  #  Returns true if the current process is in capability mode
+  #  Returns true when the current process is in capability mode
   def in_capability_mode?
     uintp = Fiddle::Pointer.malloc(Fiddle::SIZEOF_UINT)
     ret = LibC.cap_getmode(uintp)

lib/capsicum/libc.rb

@@ -0,0 +1,33 @@
+# @api private
+module Capsicum::LibC
+  module_function
+
+  ##
+  # Provides a Ruby interface for cap_enter(2)
+  # @return [Integer]
+  def cap_enter
+    Fiddle::Function.new(
+      libc["cap_enter"],
+      [],
+      Fiddle::Types::INT
+    ).call
+  end
+
+  ##
+  # Provides a Ruby interface for cap_getmode(2)
+  # @param [Fiddle::Pointer] uintp
+  # @return [Integer]
+  def cap_getmode(uintp)
+    Fiddle::Function.new(
+      libc["cap_getmode"],
+      [Fiddle::Types::INTPTR_T],
+      Fiddle::Types::INT
+    ).call(uintp)
+  end
+
+  ##
+  # @api private
+  def libc
+    @libc ||= Fiddle.dlopen Dir["/lib/libc.*"].first
+  end
+end