From 0d11b8fd1c78237bd490573fdfa185f27e64dfe2 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@courtesan.com>
Date: Fri, 31 Mar 1995 22:27:35 +0000
Subject: [PATCH] added FD_SET and FD_ZERO for 4.2BSD

---
 compat.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/compat.h b/compat.h
index 554700550..1f755d7e5 100644
--- a/compat.h
+++ b/compat.h
@@ -48,6 +48,14 @@
 #  define MAXHOSTNAMELEN	64
 #endif
 
+/*
+ * 4.2BSD lacks FD_* macros (we only use FD_SET and FD_ZERO)
+ */
+#ifndef FD_SETSIZE
+#define FD_SET(fd, fds)		((fds) -> fds_bits[0] |= (1 << (fd)))
+#define FD_ZERO(fds)		((fds) -> fds_bits[0] = 0)
+#endif /* !FD_SETSIZE */
+
 /*
  * Posix versions for those without...
  */
-- 
2.50.0