Understand about union mounts as well as union file system

diff --git a/lib/libc/gen/opendir.c b/lib/libc/gen/opendir.c
index 69b3bda..2c8487e 100644 (file)
--- a/lib/libc/gen/opendir.c
+++ b/lib/libc/gen/opendir.c
@@ -32,7 +32,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: opendir.c,v 1.2 1996/08/19 08:25:12 tholo Exp $";
+static char rcsid[] = "$OpenBSD: opendir.c,v 1.3 1996/09/07 19:04:06 tholo Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -103,8 +103,8 @@ __opendir2(name, flags)
                        close(fd);
                        return (NULL);
                }
-               unionstack = !strncmp(sfb.f_fstypename, MOUNT_UNION,
-                   MFSNAMELEN);
+               unionstack = strncmp(sfb.f_fstypename, MOUNT_UNION, MFSNAMELEN) == 0 ||
+                            (sfb.f_flags & MNT_UNION);
        } else {
                unionstack = 0;
        }