1 files changed, 21 insertions, 0 deletions
diff --git a/src/libopm/src/opm_common.h b/src/libopm/src/opm_common.h
new file mode 100644
index 0000000..8472331
--- /dev/null
+++ b/src/libopm/src/opm_common.h
@@ -0,0 +1,21 @@
+#ifndef OPM_COMMON_H
+#define OPM_COMMON_H
+
+typedef struct _libopm_node OPM_NODE_T;
+typedef struct _libopm_list OPM_LIST_T;
+
+
+struct _libopm_list
+{
+  struct _libopm_node *head;
+  struct _libopm_node *tail;
+  unsigned int elements;
+};
+
+struct _libopm_node
+{
+  struct _libopm_node *next;
+  struct _libopm_node *prev;
+  void *data;
+};
+#endif /* OPM_COMMON_H */