handle "changed" status properly

* original backend implementation uses unionfs-specific "changes only" dir to determine "changed" status. this breaks when it involves deactivated nodes.
* new library design uses explicit per-node "changed" marker. however, since previously "commit" only handles a root "changed" marker, the new library could not implement this scheme and used a workaround instead.
* now add API functions for "commit" to properly clean up "changed" markers.
* modify "commit" to use these API functions and remove the workaround from the new library.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/cstore/cstore-c.cpp b/src/cstore/cstore-c.cpp
index fd818a5..c835efe 100644
--- a/src/cstore/cstore-c.cpp
+++ b/src/cstore/cstore-c.cpp
@@ -143,6 +143,19 @@ cstore_cfg_path_get_effective_value(void *handle, const char *path_comps[],
   return NULL;
 }
 
+int
+cstore_unmark_cfg_path_changed(void *handle, const char *path_comps[],
+                               int num_comps)
+{
+  if (handle) {
+    vector<string> vs;
+    _get_str_vec(vs, path_comps, num_comps);
+    Cstore *cs = (Cstore *) handle;
+    return (cs->unmarkCfgPathChanged(vs) ? 1 : 0);
+  }
+  return 0;
+}
+
 char **
 cstore_path_string_to_path_comps(const char *path_str, int *num_comps)
 {