[gparted] Pass LUKS password as needed when resizing open mapping (#59)

[Curtis Gedak <gedakc src gnome org>]

commit f3aec1f4b138a89077ae04ac1a5fdcd9fc6980f3
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Sat Apr 3 00:50:06 2021 +0100

    Pass LUKS password as needed when resizing open mapping (#59)
    
    This is the final piece which enables GParted to pass the LUKS
    passphrase when resizing an open LUKS encryption mapping when
    'cryptsetup resize' will prompt for it.
    
    Closes #59 - Resize of LUKS2 encrypted file system fails with "Nothing
                 to read on input"

 src/luks.cc       | 9 +++++++--
 tests/Makefile.am | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/src/luks.cc b/src/luks.cc
index fa72e5c9..fa7fa5b6 100644
--- a/src/luks.cc
+++ b/src/luks.cc
@@ -16,6 +16,7 @@
 
 #include "FileSystem.h"
 #include "LUKS_Info.h"
+#include "PasswordRAMStore.h"
 #include "Utils.h"
 #include "luks.h"
 
@@ -158,8 +159,12 @@ bool luks::resize( const Partition & partition_new, OperationDetail & operationd
                // device sector size.
                size = "--size " + Utils::num_to_str( ( partition_new.get_byte_length() - mapping.offset ) / 
512LL ) + " ";
 
-       return ! execute_command( "cryptsetup -v " + size + "resize " + Glib::shell_quote( mapping.name ),
-                                 operationdetail, EXEC_CHECK_STATUS );
+       const char *pw = NULL;
+       if (mapping.key_loc == KEYLOC_KeyRing)
+               pw = PasswordRAMStore::lookup(partition_new.uuid);
+
+       return ! execute_command("cryptsetup -v " + size + "resize " + Glib::shell_quote(mapping.name),
+                                pw, operationdetail, EXEC_CHECK_STATUS);
 }
 
 } //GParted
diff --git a/tests/Makefile.am b/tests/Makefile.am
index ed6cbeda..bbd0ba8e 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -40,6 +40,7 @@ test_SupportedFileSystems_LDADD   =  \
        $(top_builddir)/src/Partition.$(OBJEXT)             \
        $(top_builddir)/src/PartitionLUKS.$(OBJEXT)         \
        $(top_builddir)/src/PartitionVector.$(OBJEXT)       \
+       $(top_builddir)/src/PasswordRAMStore.$(OBJEXT)      \
        $(top_builddir)/src/PipeCapture.$(OBJEXT)           \
        $(top_builddir)/src/Proc_Partitions_Info.$(OBJEXT)  \
        $(top_builddir)/src/ProgressBar.$(OBJEXT)           \