* 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

ChangeLog

@@ -1,3 +1,13 @@
+Sat Nov 12 11:06:02 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
+
+	* 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
+
 Sat Nov 12 11:00:42 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* io.c (struct io_cntl_arg): remove io_p member.

io.c

@@ -7860,9 +7860,17 @@ rb_f_select(int argc, VALUE *argv, VALUE obj)
     return rb_ensure(select_call, (VALUE)&args, select_end, (VALUE)&args);
 }
 
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
+ typedef unsigned long ioctl_req_t;
+ #define NUM2IOCTLREQ(num) NUM2ULONG(num)
+#else
+ typedef int ioctl_req_t;
+ #define NUM2IOCTLREQ(num) NUM2INT(num)
+#endif
+
 struct ioctl_arg {
     int		fd;
-    int		cmd;
+    ioctl_req_t	cmd;
     long	narg;
 };
 
@@ -7954,7 +7962,7 @@ setup_narg(int cmd, VALUE *argp, int io_p)
 static VALUE
 rb_ioctl(VALUE io, VALUE req, VALUE arg)
 {
-    int cmd = NUM2INT(req);
+    int cmd = NUM2IOCTLREQ(req);
     rb_io_t *fptr;
     long narg;
     int retval;

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