From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Tue, 12 Nov 2013 22:14:58 +0000 (-0700)
Subject: Very old systems (pre XPG 4.2) may not support MSG_WAITALL.  The
X-Git-Tag: SUDO_1_8_9^2~102
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=bb45f8e84db666dfa9c38673a84063792c3e0fa1;p=sudo

Very old systems (pre XPG 4.2) may not support MSG_WAITALL.  The
likelihood of receiving a partial message is quite low so this is
not a big deal.
---

diff --git a/src/sudo_exec.h b/src/sudo_exec.h
index 3b5a5f7d4..e67206271 100644
--- a/src/sudo_exec.h
+++ b/src/sudo_exec.h
@@ -17,6 +17,13 @@
 #ifndef _SUDO_EXEC_H
 #define _SUDO_EXEC_H
 
+/*
+ * Older systems may not support MSG_WAITALL but it shouldn't really be needed.
+ */
+#ifndef MSG_WAITALL
+# define MSG_WAITALL 0
+#endif
+
 /*
  * Special values to indicate whether continuing in foreground or background.
  */