[gnome-disk-utility] Don't unmount CD/DVD discs before creating a disk image of them

[David Zeuthen <davidz src gnome org>]

commit 232a47ff76c44fcdffdade5a5c32f794f0daaf71
Author: David Zeuthen <zeuthen gmail com>
Date:   Mon Jun 3 09:18:27 2013 -0700

    Don't unmount CD/DVD discs before creating a disk image of them
    
    It's not needed and, actually, slightly annoying.
    
    Signed-off-by: David Zeuthen <zeuthen gmail com>

 src/disks/gducreatediskimagedialog.c |   24 ++++++++++++++++++------
 1 files changed, 18 insertions(+), 6 deletions(-)
---
diff --git a/src/disks/gducreatediskimagedialog.c b/src/disks/gducreatediskimagedialog.c
index dc9933e..e5c36cd 100644
--- a/src/disks/gducreatediskimagedialog.c
+++ b/src/disks/gducreatediskimagedialog.c
@@ -1049,12 +1049,24 @@ on_dialog_response (GtkDialog     *dialog,
     case GTK_RESPONSE_OK:
       if (check_overwrite (data))
         {
-          /* ensure the device is unused (e.g. unmounted) before copying data from it... */
-          gdu_window_ensure_unused (data->window,
-                                    data->object,
-                                    (GAsyncReadyCallback) ensure_unused_cb,
-                                    NULL, /* GCancellable */
-                                    data);
+          /* If it's a optical drive, we don't need to try and
+           * manually unmount etc.  everything as we're attempting to
+           * open it O_RDONLY anyway - see copy_thread_func() for
+           * details.
+           */
+          if (g_str_has_prefix (udisks_block_get_device (data->block), "/dev/sr"))
+            {
+              start_copying (data);
+            }
+          else
+            {
+              /* ensure the device is unused (e.g. unmounted) before copying data from it... */
+              gdu_window_ensure_unused (data->window,
+                                        data->object,
+                                        (GAsyncReadyCallback) ensure_unused_cb,
+                                        NULL, /* GCancellable */
+                                        data);
+            }
         }
       break;