From bf4244d1a0d921defbd92deb1e54b59ee1ce35b4 Mon Sep 17 00:00:00 2001
From: Sergey Vojtovich <svoj@mariadb.org>
Date: Wed, 27 Jun 2018 17:01:09 +0400
Subject: [PATCH] MDEV-8540 - Crash on server shutdown since 10.0.16

Only close stdin if it was open initinally. Otherwise we may close file
descriptor which is reused for different puprose (specifically for binlog
index file in case of this bug).
---
 sql/mysqld.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index fb49c05def5..d760986a303 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -5149,6 +5149,9 @@ int win_main(int argc, char **argv)
 int mysqld_main(int argc, char **argv)
 #endif
 {
+  /* We can't close stdin just now, because it may be booststrap mode. */
+  bool please_close_stdin= fcntl(STDIN_FILENO, F_GETFD) >= 0;
+
   /*
     Perform basic thread library and malloc initialization,
     to be able to read defaults files and parse options.
@@ -5492,7 +5495,9 @@ int mysqld_main(int argc, char **argv)
                          (char*) "" : mysqld_unix_port),
                          mysqld_port,
                          MYSQL_COMPILATION_COMMENT);
-  fclose(stdin);
+  /* Only close stdin if it was open initinally. */
+  if (please_close_stdin)
+    fclose(stdin);
 #if defined(_WIN32) && !defined(EMBEDDED_LIBRARY)
   Service.SetRunning();
 #endif