[gnome-disk-utility] Don't default to NTFS unless the mkntfs(8) command exists

[David Zeuthen <davidz src gnome org>]

commit b95d91907c049da6303b292e52509507175f0668
Author: David Zeuthen <zeuthen gmail com>
Date:   Tue Jul 31 15:49:55 2012 -0400

    Don't default to NTFS unless the mkntfs(8) command exists
    
    ... default to FAT instead in this case. Why this change? Because some
    operating systems may not ship ntfsprogs.
    
    Signed-off-by: David Zeuthen <zeuthen gmail com>

 src/disks/gducreatefilesystemwidget.c |    5 ++++-
 src/libgdu/gduutils.c                 |   20 ++++++++++++++++++++
 src/libgdu/gduutils.h                 |    2 ++
 3 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/src/disks/gducreatefilesystemwidget.c b/src/disks/gducreatefilesystemwidget.c
index 1b4f646..cfda868 100644
--- a/src/disks/gducreatefilesystemwidget.c
+++ b/src/disks/gducreatefilesystemwidget.c
@@ -448,7 +448,10 @@ populate (GduCreateFilesystemWidget *widget)
         }
       else
         {
-          gtk_combo_box_set_active_id (GTK_COMBO_BOX (widget->type_combobox), "ntfs");
+          if (gdu_utils_is_ntfs_available ())
+            gtk_combo_box_set_active_id (GTK_COMBO_BOX (widget->type_combobox), "ntfs");
+          else
+            gtk_combo_box_set_active_id (GTK_COMBO_BOX (widget->type_combobox), "vfat");
         }
     }
   else
diff --git a/src/libgdu/gduutils.c b/src/libgdu/gduutils.c
index 0336e19..a2f74c3 100644
--- a/src/libgdu/gduutils.c
+++ b/src/libgdu/gduutils.c
@@ -655,3 +655,23 @@ gdu_utils_show_confirmation (GtkWindow   *parent_window,
 }
 
 /* ---------------------------------------------------------------------------------------------------- */
+
+gboolean
+gdu_utils_is_ntfs_available (void)
+{
+  static gsize once = 0;
+  static gboolean available = FALSE;
+
+  if (g_once_init_enter (&once))
+    {
+      gchar *path;
+      path = g_find_program_in_path ("mkntfs");
+      if (path != NULL)
+        available = TRUE;
+      g_free (path);
+      g_once_init_leave (&once, (gsize) 1);
+    }
+  return available;
+}
+
+
diff --git a/src/libgdu/gduutils.h b/src/libgdu/gduutils.h
index 1e88fe3..898f099 100644
--- a/src/libgdu/gduutils.h
+++ b/src/libgdu/gduutils.h
@@ -68,6 +68,8 @@ gboolean        gdu_utils_show_confirmation (GtkWindow   *parent_window,
                                              const gchar *secondary_message,
                                              const gchar *affirmative_verb);
 
+gboolean gdu_utils_is_ntfs_available (void);
+
 G_END_DECLS
 
 #endif /* __GDU_UTILS_H__ */