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-rw-r--r--include/libcgroup/groups.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/libcgroup/groups.h b/include/libcgroup/groups.h
index ba01011..2d123c2 100644
--- a/include/libcgroup/groups.h
+++ b/include/libcgroup/groups.h
@@ -1,6 +1,10 @@
#ifndef _LIBCGROUP_GROUPS_H
#define _LIBCGROUP_GROUPS_H
+#ifndef _LIBCGROUP_H_INSIDE
+#error "Only <libcgroup.h> should be included directly."
+#endif
+
#include <features.h>
#include <sys/types.h>
#include <stdbool.h>