lib: northbound cli show/cmd functions must not modify data nodes

To ensure this, add a const modifier to functions' arguments. Would be
great do this initially and avoid this large code change, but better
late than never.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/lib/if.c b/lib/if.c
index 424880ff42..2a517911e6 100644
--- a/lib/if.c
+++ b/lib/if.c
@@ -1277,8 +1277,8 @@ DEFPY_YANG (no_interface,
 		ifname, vrf_name);
 }
 
-static void cli_show_interface(struct vty *vty, struct lyd_node *dnode,
-			bool show_defaults)
+static void cli_show_interface(struct vty *vty, const struct lyd_node *dnode,
+			       bool show_defaults)
 {
 	const char *vrf;
 
@@ -1291,7 +1291,8 @@ static void cli_show_interface(struct vty *vty, struct lyd_node *dnode,
 	vty_out(vty, "\n");
 }
 
-static void cli_show_interface_end(struct vty *vty, struct lyd_node *dnode)
+static void cli_show_interface_end(struct vty *vty,
+				   const struct lyd_node *dnode)
 {
 	vty_out(vty, "exit\n");
 }
@@ -1327,8 +1328,9 @@ DEFPY_YANG  (no_interface_desc,
 	return nb_cli_apply_changes(vty, NULL);
 }
 
-static void cli_show_interface_desc(struct vty *vty, struct lyd_node *dnode,
-			     bool show_defaults)
+static void cli_show_interface_desc(struct vty *vty,
+				    const struct lyd_node *dnode,
+				    bool show_defaults)
 {
 	vty_out(vty, " description %s\n", yang_dnode_get_string(dnode, NULL));
 }