Explanatory comment.

diff --git a/semex.c b/semex.c
index 7b80fddbb28b7e517213073b3d029a5b83515d46..d689bb6ad4cbf79e35d70ba4e8f660330e40f68a 100644 (file)
--- a/semex.c
+++ b/semex.c
@@ -15,6 +15,9 @@
 #include <sys/ipc.h>
 #include <sys/sem.h>
 
+/*
+ * This code copied from the semctl(3) man page.
+ */
 #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
 /* union semun is defined by including <sys/sem.h> */
 #else