[gparted] Prevent deletion of open LUKS mappings (#774818)

[Curtis Gedak <gedakc src gnome org>]

commit f1e3d42b5604d93dc954f5f218ef489649f11284
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Mon Nov 21 21:42:30 2016 +0000

    Prevent deletion of open LUKS mappings (#774818)
    
    At least until closing LUKS mappings is supported.
    
    Bug 774818 - Implement LUKS read-write actions NOT requiring a
                 passphrase

 src/Win_GParted.cc |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/Win_GParted.cc b/src/Win_GParted.cc
index e261947..e9c03e2 100644
--- a/src/Win_GParted.cc
+++ b/src/Win_GParted.cc
@@ -1245,7 +1245,8 @@ void Win_GParted::set_valid_operations()
                allow_format( true ) ;
 
                // only allow deletion of partitions within a partition table
-               if ( ! selected_partition_ptr->whole_device )
+               // Also exclude open LUKS mappings until open/close is supported
+               if ( ! selected_partition_ptr->whole_device & ! selected_partition_ptr->busy )
                        allow_delete( true );
 
                // Resizing/moving always requires the ability to update the partition