MDEV-17710 "unknown error" with FLUSH LOGS if log directory is not writeable

1 files changed, 6 insertions, 6 deletions

diff --git a/sql/log.cc b/sql/log.cc
index ac885746c62..819ece8f98f 100644
--- a/sql/log.cc
+++ b/sql/log.cc
@@ -8644,14 +8644,14 @@ void sql_perror(const char *message)
   redirect stdout and stderr to a file. The streams are reopened
   only for appending (writing at end of file).
 */
-extern "C" my_bool reopen_fstreams(const char *filename,
-                                   FILE *outstream, FILE *errstream)
+bool reopen_fstreams(const char *filename, FILE *outstream, FILE *errstream)
 {
-  if (outstream && !my_freopen(filename, "a", outstream))
-    return TRUE;
-
-  if (errstream && !my_freopen(filename, "a", errstream))
+  if ((outstream && !my_freopen(filename, "a", outstream)) ||
+      (errstream && !my_freopen(filename, "a", errstream)))
+  {
+    my_error(ER_CANT_CREATE_FILE, MYF(0), filename, errno);
     return TRUE;
+  }
 
   /* The error stream must be unbuffered. */
   if (errstream)