X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fuci.git;a=blobdiff_plain;f=uci.h;h=be816fd95ca5cc64578c0a2521a8a223bb87c833;hp=382e745f1d58d4f0f4db79df078e320d4719da55;hb=6c020def580232b9188232f044184c575a716cda;hpb=80e2e58f4e4c0d8ff492281fa998d550a85b4d92

diff --git a/uci.h b/uci.h
index 382e745..be816fd 100644
--- a/uci.h
+++ b/uci.h
@@ -15,6 +15,8 @@
 #ifndef __LIBUCI_H
 #define __LIBUCI_H
 
+#include "uci_config.h"
+
 /*
  * you can use these defines to enable debugging behavior for
  * apps compiled against libuci:
@@ -24,18 +26,14 @@
  *
  */
 
-#ifdef DEBUG_ALL
-#define UCI_DEBUG
-#define UCI_DEBUG_TYPECAST
-#endif
-
 #include <stdbool.h>
 #include <setjmp.h>
 #include <stdio.h>
 
 #define UCI_CONFDIR "/etc/config"
 #define UCI_SAVEDIR "/tmp/.uci"
-#define UCI_FILEMODE	0600
+#define UCI_DIRMODE 0700
+#define UCI_FILEMODE 0600
 
 enum
 {
@@ -148,7 +146,7 @@ extern int uci_unload(struct uci_context *ctx, struct uci_package *p);
  * If section is omitted, then a pointer to the config package is returned
  * If option is omitted, then a pointer to the config section is returned
  */
-extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *package, char *section, char *option);
+extern int uci_lookup(struct uci_context *ctx, struct uci_element **res, struct uci_package *package, const char *section, const char *option);
 
 /**
  * uci_add_section: Add an unnamed section
@@ -228,6 +226,8 @@ 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);
 
@@ -262,7 +262,7 @@ extern int uci_add_history_path(struct uci_context *ctx, const char *dir);
  * @section: section name (optional)
  * @option option name (optional)
  */
-extern int uci_revert(struct uci_context *ctx, struct uci_package **p, char *section, char *option);
+extern int uci_revert(struct uci_context *ctx, struct uci_package **p, const char *section, const char *option);
 
 /**
  * uci_parse_argument: parse a shell-style argument, with an arbitrary quoting style
@@ -273,13 +273,23 @@ extern int uci_revert(struct uci_context *ctx, struct uci_package **p, char *sec
  */
 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 data structures */
 enum uci_type {
 	UCI_TYPE_HISTORY = 0,
 	UCI_TYPE_PACKAGE = 1,
 	UCI_TYPE_SECTION = 2,
 	UCI_TYPE_OPTION = 3,
-	UCI_TYPE_PATH = 4
+	UCI_TYPE_PATH = 4,
+	UCI_TYPE_BACKEND = 5,
 };
 
 enum uci_flags {
@@ -298,12 +308,15 @@ struct uci_element
 
 struct uci_backend
 {
-	const char *name;
+	struct uci_element e;
 	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);
-};
 
+	/* private: */
+	const void *ptr;
+	void *priv;
+};
 
 struct uci_context
 {
@@ -315,6 +328,7 @@ struct uci_context
 
 	/* backend for import and export */
 	struct uci_backend *backend;
+	struct uci_list backends;
 
 	/* uci runtime flags */
 	enum uci_flags flags;
@@ -326,7 +340,7 @@ struct uci_context
 	struct uci_list history_path;
 
 	/* private: */
-	int errno;
+	int err;
 	const char *func;
 	jmp_buf trap;
 	bool internal;
@@ -339,11 +353,12 @@ struct uci_package
 	struct uci_element e;
 	struct uci_list sections;
 	struct uci_context *ctx;
-	bool confdir;
+	bool has_history;
 	char *path;
 
 	/* private: */
 	struct uci_backend *backend;
+	void *priv;
 	int n_section;
 	struct uci_list history;
 	struct uci_list saved_history;
@@ -380,6 +395,7 @@ struct uci_history
 	char *value;
 };
 
+
 /* linked list handling */
 #ifndef offsetof
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
@@ -400,9 +416,6 @@ struct uci_history
  * @_type: config, section or option
  * @_ptr: pointer to the uci_list struct
  */
-#define element_to(type, ptr) \
-	container_of(ptr, struct uci_ ## type, e)
-
 #define list_to_element(ptr) \
 	container_of(ptr, struct uci_element, list)
 
@@ -445,6 +458,7 @@ struct uci_history
 #define uci_list_empty(list) ((list)->next == (list))
 
 /* wrappers for dynamic type handling */
+#define uci_type_backend UCI_TYPE_BACKEND
 #define uci_type_history UCI_TYPE_HISTORY
 #define uci_type_package UCI_TYPE_PACKAGE
 #define uci_type_section UCI_TYPE_SECTION
@@ -453,6 +467,7 @@ struct uci_history
 /* element typecasting */
 #ifdef UCI_DEBUG_TYPECAST
 static const char *uci_typestr[] = {
+	[uci_type_backend] = "backend",
 	[uci_type_history] = "history",
 	[uci_type_package] = "package",
 	[uci_type_section] = "section",
@@ -473,12 +488,14 @@ static void uci_typecast_error(int from, int to)
 		return (struct uci_ ## _type *) e; \
 	}
 
+BUILD_CAST(backend)
 BUILD_CAST(history)
 BUILD_CAST(package)
 BUILD_CAST(section)
 BUILD_CAST(option)
 
 #else
+#define uci_to_backend(ptr) container_of(ptr, struct uci_backend, e)
 #define uci_to_history(ptr) container_of(ptr, struct uci_history, e)
 #define uci_to_package(ptr) container_of(ptr, struct uci_package, e)
 #define uci_to_section(ptr) container_of(ptr, struct uci_section, e)