+/* filenames for the config and database files */
+#define UDEV_DB ".udev.tdb"
+#define UDEV_CONFIG_PERMISSION_FILE "udev.permissions"
+#define UDEV_CONFIG_FILE "udev.config"
+
+#define NAME_SIZE 100
+#define OWNER_SIZE 30
+#define GROUP_SIZE 30
+
+struct udevice {
+ char name[NAME_SIZE];
+ char owner[OWNER_SIZE];
+ char group[GROUP_SIZE];
+ char type;
+ int major;
+ int minor;
+ mode_t mode;
+
+ /* fields that help us in building strings */
+ unsigned char bus_id[SYSFS_NAME_LEN];
+ unsigned char callout_value[NAME_SIZE];
+ unsigned char kernel_number[NAME_SIZE];
+
+};
+
+#define strfieldcpy(to, from) \
+do { \
+ to[sizeof(to)-1] = '\0'; \
+ strncpy(to, from, sizeof(to)-1); \
+} while (0)
+
+extern int udev_add_device(char *path, char *subsystem);
+extern int udev_remove_device(char *path, char *subsystem);
+
+extern char **main_argv;
+extern char **main_envp;
+extern char sysfs_path[SYSFS_PATH_MAX];
+extern char *udev_config_dir;
+extern char *udev_root;
+extern char udev_db_filename[PATH_MAX+NAME_MAX];
+extern char udev_config_permission_filename[PATH_MAX+NAME_MAX];
+extern char udev_config_filename[PATH_MAX+NAME_MAX];
+
+#endif