add comment about memory handling in list_configs

[project/uci.git] / uci.h

diff --git a/uci.h b/uci.h
index 8f4fa71..44f947f 100644 (file)
--- a/uci.h
+++ b/uci.h
@@ -63,6 +63,7 @@ struct uci_section;
 struct uci_option;
 struct uci_history;
 struct uci_context;
+struct uci_backend;
 struct uci_parse_context;
 
 
@@ -136,13 +137,6 @@ extern int uci_load(struct uci_context *ctx, const char *name, struct uci_packag
 extern int uci_unload(struct uci_context *ctx, struct uci_package *p);
 
 /**
- * uci_cleanup: Clean up after an error
- *
- * @ctx: uci context
- */
-extern int uci_cleanup(struct uci_context *ctx);
-
-/**
  * uci_lookup: Look up an uci element
  *
  * @ctx: uci context
@@ -234,6 +228,8 @@ extern int uci_commit(struct uci_context *ctx, struct uci_package **p, bool over
 /**
  * uci_list_configs: List available uci config files
  * @ctx: uci context
+ *
+ * caller is responsible for freeing the allocated memory behind list
  */
 extern int uci_list_configs(struct uci_context *ctx, char ***list);
 
@@ -302,6 +298,15 @@ struct uci_element
        char *name;
 };
 
+struct uci_backend
+{
+       const char *name;
+       char **(*list_configs)(struct uci_context *ctx);
+       struct uci_package *(*load)(struct uci_context *ctx, const char *name);
+       void (*commit)(struct uci_context *ctx, struct uci_package **p, bool overwrite);
+};
+
+
 struct uci_context
 {
        /* list of config packages */
@@ -310,6 +315,9 @@ struct uci_context
        /* parser context, use for error handling only */
        struct uci_parse_context *pctx;
 
+       /* backend for import and export */
+       struct uci_backend *backend;
+
        /* uci runtime flags */
        enum uci_flags flags;
 
@@ -337,6 +345,7 @@ struct uci_package
        char *path;
 
        /* private: */
+       struct uci_backend *backend;
        int n_section;
        struct uci_list history;
        struct uci_list saved_history;