Avoid writing msglog files in -bh and -bhc modes. Bug 1804

[exim.git] / src / src / regex.c

diff --git a/src/src/regex.c b/src/src/regex.c
index 3852ad8c52a68427651bd4b9708cb54b03aab6ff..233a56bce36db73bf4ef5467ecc4ce7b9f03aeec 100644 (file)
--- a/src/src/regex.c
+++ b/src/src/regex.c
@@ -2,8 +2,10 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-2015 */
-/* License: GPL */
+/* Copyright (c) Tom Kistner <tom@duncanthrax.net> 2003-2015
+ * License: GPL
+ * Copyright (c) The Exim Maintainers 2016
+ */
 
 /* Code for matching regular expressions against headers and body.
  Called from acl.c. */
@@ -112,7 +114,12 @@ if (!mime_stream)                          /* We are in the DATA ACL */
   }
 else
   {
-  f_pos = ftell(mime_stream);
+  if ((f_pos = ftell(mime_stream)) < 0)
+    {
+    log_write(0, LOG_MAIN|LOG_PANIC,
+          "regex acl condition: mime_stream: %s", strerror(errno));
+    return DEFER;
+    }
   mbox_file = mime_stream;
   }