* io.c (ioctl_req_t): Type of req argument of ioctl() depend on platform.

  Moreover almost all linux ioctl can't be represented by 32bit integer
  (i.e. MSB is 1). We need wrap ioctl argument type.
[Bug #5429] [ruby-dev:44589]
* io.c (struct ioctl_arg): ditto.
* io.c (rb_ioctl): ditto.
* test/ruby/test_io.rb (test_ioctl_linux): add a testcase for ioctl



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33716 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 12 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index e4af5e0e9f..f7670a1293 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2055,4 +2055,16 @@ End
       assert(w.close_on_exec?) 
     }
   end
+
+  def test_ioctl_linux
+    return if /linux/ !~ RUBY_PLATFORM
+
+    assert_nothing_raised do
+      File.open('/dev/urandom'){|f1|
+        entropy_count = ""
+        # get entropy count
+        f1.ioctl(0x80045200, entropy_count)
+      }
+    end
+  end
 end