From 7b032b01cd94e5c96c527ad3dc620e255961a80d Mon Sep 17 00:00:00 2001
From: Monty <monty@mariadb.org>
Date: Thu, 16 Mar 2023 17:57:34 +0200
Subject: [PATCH] Fixed newly introduced bug in scripts/mysql_install_db

In some cases, the errors would not be written to the log.
This was however not critical as in most cases mysql_install_db
should not normally write anything to the log.
---
 scripts/mysql_install_db.sh | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/scripts/mysql_install_db.sh b/scripts/mysql_install_db.sh
index 065aa7bd3fe..3b14437b5d1 100644
--- a/scripts/mysql_install_db.sh
+++ b/scripts/mysql_install_db.sh
@@ -24,7 +24,6 @@ builddir=""
 ldata="@localstatedir@"
 langdir=""
 srcdir=""
-log_error=""
 
 args=""
 defaults=""
@@ -551,12 +550,20 @@ else
   filter_cmd_line="cat"
 fi
 
-# Disable log error if the user don't have write access to the directory.
-# This is common when a user tries to install a personal mariadbd server
-if test -n $log_error
+# Disable log error if the user don't have right to write/create the file
+# This is common when a user tries to install a personal mariadbd server and
+# the global config in /etc is using --log-error.
+# The server will internally change log-error to stderr to stderr if it cannot
+# write the the log file. This code only disables the error message from a not
+# writable log-error, which can be confusing.
+if test -n "$log_error"
 then
-    if test ! -w $log_error
+    if test \( -e "$log_error" -a \! -w "$log_error" \) -o \( ! -e "$log_error" -a ! -w "`dirname "$log_error"`" \)
     then
+        if test -n "$verbose"
+        then
+            echo "resetting log-error '$log_error' because no write access"
+        fi
         log_error=""
         args="$args --skip-log-error"
     fi