+#define TYPE_LABEL "LABEL"
+#define TYPE_NUMBER "NUMBER"
+#define TYPE_TOPOLOGY "TOPOLOGY"
+#define TYPE_REPLACE "REPLACE"
+#define TYPE_CALLOUT "CALLOUT"
+
+#define FIELD_BUS "BUS"
+#define FIELD_ID "ID"
+#define FIELD_SYSFS "SYSFS_"
+#define FIELD_PLACE "PLACE"
+#define FIELD_PROGRAM "PROGRAM"
+#define FIELD_KERNEL "KERNEL"
+#define FIELD_NAME "NAME"
+#define FIELD_SYMLINK "SYMLINK"
+
+#define CALLOUT_MAXARG 8
+#define MAX_SYSFS_PAIRS 5
+
+struct sysfs_pair {
+ char file[FILE_SIZE];
+ char value[VALUE_SIZE];
+};