+ * @ctx: uci context
+ *
+ * caller is responsible for freeing the allocated memory behind list
+ */
+extern int uci_list_configs(struct uci_context *ctx, char ***list);
+
+/**
+ * uci_set_savedir: override the default delta save directory
+ * @ctx: uci context
+ * @dir: directory name
+ */
+extern int uci_set_savedir(struct uci_context *ctx, const char *dir);
+
+/**
+ * uci_set_savedir: override the default config storage directory
+ * @ctx: uci context
+ * @dir: directory name
+ */
+extern int uci_set_confdir(struct uci_context *ctx, const char *dir);
+
+/**
+ * uci_add_delta_path: add a directory to the search path for change delta files
+ * @ctx: uci context
+ * @dir: directory name
+ *
+ * This function allows you to add directories, which contain 'overlays'
+ * for the active config, that will never be committed.
+ * Caller of this API should ensure that no duplicate entries (including the
+ * default search path, e.g. `UCI_SAVEDIR') should be added.
+ */
+extern int uci_add_delta_path(struct uci_context *ctx, const char *dir);
+
+/**
+ * uci_revert: revert all changes to a config item
+ * @ctx: uci context
+ * @ptr: uci pointer
+ */
+extern int uci_revert(struct uci_context *ctx, struct uci_ptr *ptr);
+
+/**
+ * uci_parse_argument: parse a shell-style argument, with an arbitrary quoting style
+ * @ctx: uci context
+ * @stream: input stream
+ * @str: pointer to the current line (use NULL for parsing the next line)
+ * @result: pointer for the result
+ */
+extern int uci_parse_argument(struct uci_context *ctx, FILE *stream, char **str, char **result);
+
+/**
+ * uci_set_backend: change the default backend
+ * @ctx: uci context
+ * @name: name of the backend
+ *
+ * The default backend is "file", which uses /etc/config for config storage
+ */
+extern int uci_set_backend(struct uci_context *ctx, const char *name);
+
+/**
+ * uci_validate_text: validate a value string for uci options
+ * @str: value
+ *
+ * this function checks whether a given string is acceptable as value
+ * for uci options
+ */
+extern bool uci_validate_text(const char *str);
+
+/**
+ * uci_parse_ptr: parse a uci string into a uci_ptr
+ * @ctx: uci context
+ * @ptr: target data structure
+ * @str: string to parse