Attempt redirection of startup log to /dev/tty of /dev/stderr cannot be opened.

2 files changed, 18 insertions, 3 deletions

diff --git a/docs/release-notes/version-4.4.16.rst b/docs/release-notes/version-4.4.16.rst
index eab5df4..d739abf 100644
--- a/docs/release-notes/version-4.4.16.rst
+++ b/docs/release-notes/version-4.4.16.rst
@@ -9,3 +9,11 @@ Version 4.4.16 of mod_wsgi can be obtained from:
 For details on the availability of Windows binaries see:
 
   https://github.com/GrahamDumpleton/mod_wsgi/tree/master/win32
+
+Bugs Fixed
+----------
+
+1. If ``/dev/stderr`` cannot be opened for writing when startup log is
+requested and logging to the terminal, then ``mod_wsgi-express`` would
+fail. Now attempt fallback to using ``/dev/tty`` and if that cannot be
+opened either, then give up on trying to use terminal for startup log.
diff --git a/src/server/__init__.py b/src/server/__init__.py
index b3c611c..4b92589 100644
--- a/src/server/__init__.py
+++ b/src/server/__init__.py
@@ -2799,12 +2799,19 @@ def _cmd_setup_server(command, args, options):
                 with open('/dev/stderr', 'w'):
                     pass
             except IOError:
-                options['startup_log_file'] = None
+                try:
+                    with open('/dev/tty', 'w'):
+                        pass
+                except IOError:
+                    options['startup_log_file'] = None
+                else:
+                    options['startup_log_file'] = '/dev/tty'
             else:
                 options['startup_log_file'] = '/dev/stderr'
 
-        options['httpd_arguments_list'].append('-E')
-        options['httpd_arguments_list'].append(options['startup_log_file'])
+        if options['startup_log_file']:
+            options['httpd_arguments_list'].append('-E')
+            options['httpd_arguments_list'].append(options['startup_log_file'])
 
     if options['server_name']:
         host = options['server_name']