1 files changed, 4 insertions, 0 deletions
diff --git a/include/util/lock.h b/include/util/lock.h
index da18f81..27f23c5 100644
--- a/include/util/lock.h
+++ b/include/util/lock.h
@@ -5,6 +5,10 @@ struct Lock {
 	unsigned long pid;
 } __attribute__((packed, aligned(4)));
 
+struct Semaphore {
+	unsigned long value;
+} __attribute__((packed, aligned(4)));
+
 void lock(struct Lock* l);
 void unlock(struct Lock* l);