configfs: Add permission and ownership to configfs objects.

configfs always made item and attribute ownership root.root and
permissions based on a umask of 022.  Add ->setattr() to allow
chown(2)/chmod(2), and persist the changes for the lifetime of the
items and attributes.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/Documentation/filesystems/configfs/configfs_example.c b/Documentation/filesystems/configfs/configfs_example.c
index f3c6e4946f98..3d4713a6c207 100644
--- a/Documentation/filesystems/configfs/configfs_example.c
+++ b/Documentation/filesystems/configfs/configfs_example.c
@@ -320,6 +320,7 @@ static struct config_item_type simple_children_type = {
         .ct_item_ops    = &simple_children_item_ops,
         .ct_group_ops   = &simple_children_group_ops,
         .ct_attrs       = simple_children_attrs,
+        .ct_owner       = THIS_MODULE,
 };
 
 static struct configfs_subsystem simple_children_subsys = {
@@ -403,6 +404,7 @@ static struct config_item_type group_children_type = {
         .ct_item_ops    = &group_children_item_ops,
         .ct_group_ops   = &group_children_group_ops,
         .ct_attrs       = group_children_attrs,
+        .ct_owner       = THIS_MODULE,
 };
 
 static struct configfs_subsystem group_children_subsys = {