downgrade duplicate Subsystem directives from being a fatal error

to being a debug message to match behaviour with just about all other
directives.

diff --git a/usr.bin/ssh/servconf.c b/usr.bin/ssh/servconf.c
index 84fc8a6..308661e 100644 (file)
--- a/usr.bin/ssh/servconf.c
+++ b/usr.bin/ssh/servconf.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: servconf.c,v 1.397 2023/08/29 02:50:10 djm Exp $ */
+/* $OpenBSD: servconf.c,v 1.398 2023/09/06 23:21:36 djm Exp $ */
 /*
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved
@@ -1885,13 +1885,22 @@ process_server_config_line_depth(ServerOptions *options, char *line,
                        fatal("%s line %d: %s missing argument.",
                            filename, linenum, keyword);
                if (!*activep) {
-                       arg = argv_next(&ac, &av);
+                       argv_consume(&ac);
+                       break;
+               }
+               found = 0;
+               for (i = 0; i < options->num_subsystems; i++) {
+                       if (strcmp(arg, options->subsystem_name[i]) == 0) {
+                               found = 1;
+                               break;
+                       }
+               }
+               if (found) {
+                       debug("%s line %d: Subsystem '%s' already defined.",
+                           filename, linenum, arg);
+                       argv_consume(&ac);
                        break;
                }
-               for (i = 0; i < options->num_subsystems; i++)
-                       if (strcmp(arg, options->subsystem_name[i]) == 0)
-                               fatal("%s line %d: Subsystem '%s' "
-                                   "already defined.", filename, linenum, arg);
                options->subsystem_name[options->num_subsystems] = xstrdup(arg);
                arg = argv_next(&ac, &av);
                if (!arg || *arg == '\0')