[gparted] Add bug checks into resize/move operation methods (#774818)

[Curtis Gedak <gedakc src gnome org>]

commit a1c140128552edc87df7fcb9b3341039a4415ba5
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Thu Dec 8 15:54:39 2016 +0000

    Add bug checks into resize/move operation methods (#774818)
    
    Ensure pre-conditions of always or never being passed a Partition object
    containing an open LUKS encryption are met for resizing file system and
    LUKS encryption methods.
    
    Bug 774818 - Implement LUKS read-write actions NOT requiring a
                 passphrase

 src/GParted_Core.cc |   39 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)
---
diff --git a/src/GParted_Core.cc b/src/GParted_Core.cc
index 22bf890..829f2f4 100644
--- a/src/GParted_Core.cc
+++ b/src/GParted_Core.cc
@@ -2586,6 +2586,14 @@ bool GParted_Core::resize_encryption( const Partition & partition_old,
                                       const Partition & partition_new,
                                       OperationDetail & operationdetail )
 {
+       if ( ! ( partition_old.filesystem == FS_LUKS && partition_old.busy ) )
+       {
+               operationdetail.add_child( OperationDetail(
+                       GPARTED_BUG + ": " + _("partition does not contain open LUKS encryption for a resize 
encryption only step"),
+                       STATUS_ERROR, FONT_ITALIC ) );
+               return false;
+       }
+
        const Partition & filesystem_ptn_new = partition_new.get_filesystem_partition();
        Sector delta = partition_new.get_sector_length() - partition_old.get_sector_length();
 
@@ -2629,6 +2637,14 @@ bool GParted_Core::resize_plain( const Partition & partition_old,
                                  const Partition & partition_new,
                                  OperationDetail & operationdetail )
 {
+       if ( partition_old.filesystem == FS_LUKS && partition_old.busy )
+       {
+               operationdetail.add_child( OperationDetail(
+                       GPARTED_BUG + ": " + _("partition contains open LUKS encryption for a resize file 
system only step"),
+                       STATUS_ERROR, FONT_ITALIC ) );
+               return false;
+       }
+
        if ( partition_new.filesystem == FS_LINUX_SWAP )
        {
                // linux-swap is recreated, not resized
@@ -2861,6 +2877,14 @@ bool GParted_Core::shrink_encryption( const Partition & partition_old,
                                       const Partition & partition_new,
                                       OperationDetail & operationdetail )
 {
+       if ( ! ( partition_old.filesystem == FS_LUKS && partition_old.busy ) )
+       {
+               operationdetail.add_child( OperationDetail(
+                       GPARTED_BUG + ": " + _("partition does not contain open LUKS encryption for a shrink 
encryption only step"),
+                       STATUS_ERROR, FONT_ITALIC ) );
+               return false;
+       }
+
        operationdetail.add_child( OperationDetail( _("shrink encryption volume") ) );
        bool success = resize_filesystem_implement( partition_old, partition_new, operationdetail );
        operationdetail.get_last_child().set_status( success ? STATUS_SUCCES : STATUS_ERROR );
@@ -2869,6 +2893,14 @@ bool GParted_Core::shrink_encryption( const Partition & partition_old,
 
 bool GParted_Core::maximize_encryption( const Partition & partition, OperationDetail & operationdetail )
 {
+       if ( ! ( partition.filesystem == FS_LUKS && partition.busy ) )
+       {
+               operationdetail.add_child( OperationDetail(
+                       GPARTED_BUG + ": " + _("partition does not contain open LUKS encryption for a 
maximize encryption only step"),
+                       STATUS_ERROR, FONT_ITALIC ) );
+               return false;
+       }
+
        operationdetail.add_child( OperationDetail( _("grow encryption volume to fill the partition") ) );
        bool success = resize_filesystem_implement( partition, partition, operationdetail );
        operationdetail.get_last_child().set_status( success ? STATUS_SUCCES : STATUS_ERROR );
@@ -2879,6 +2911,13 @@ bool GParted_Core::shrink_filesystem( const Partition & partition_old,
                                       const Partition & partition_new,
                                       OperationDetail & operationdetail )
 {
+       if ( partition_old.filesystem == FS_LUKS && partition_old.busy )
+       {
+               operationdetail.add_child( OperationDetail(
+                       GPARTED_BUG + ": " + _("partition contains open LUKS encryption for a shrink file 
system only step"),
+                       STATUS_ERROR, FONT_ITALIC ) );
+               return false;
+       }
        if ( partition_new.get_sector_length() >= partition_old.get_sector_length() )
        {
                operationdetail.add_child( OperationDetail(