[gparted] Add labelling of linux-swap

[Curtis Gedak <gedakc src gnome org>]

commit 3194121496fcc3a35b81835ecad55120d036aedf
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Wed Aug 4 22:57:29 2010 +0100

    Add labelling of linux-swap
    
    When found, use external swaplabel command to label linux-swap
    partitions.  (Available from util-linux-ng 2.18 released 30 Jun 2010).

 src/linux_swap.cc |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/linux_swap.cc b/src/linux_swap.cc
index 3383b79..a9df279 100644
--- a/src/linux_swap.cc
+++ b/src/linux_swap.cc
@@ -37,6 +37,9 @@ FS linux_swap::get_filesystem_support()
 	if ( ! Glib::find_program_in_path( "vol_id" ) .empty() )
 		fs .read_label = FS::EXTERNAL ;
 
+	if ( ! Glib::find_program_in_path( "swaplabel" ) .empty() )
+		fs .write_label = FS::EXTERNAL ;
+
 	fs .copy = GParted::FS::GPARTED ;
 	fs .move = GParted::FS::GPARTED ;
 	
@@ -65,7 +68,7 @@ void linux_swap::read_label( Partition & partition )
 
 bool linux_swap::write_label( const Partition & partition, OperationDetail & operationdetail )
 {
-	return true ;
+	return ! execute_command( "swaplabel -L \"" + partition .label + "\" " + partition .get_path(), operationdetail ) ;
 }
 
 bool linux_swap::create( const Partition & new_partition, OperationDetail & operationdetail )