Add --dbg-dump-subsystem-list command to list the subsystems.

I'm prefixing this with --dbg-* because it is not meant to be used
externally.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/app/config/config.c b/src/app/config/config.c
index 4becae4756..0ae650eb08 100644
--- a/src/app/config/config.c
+++ b/src/app/config/config.c
@@ -2498,6 +2498,9 @@ static const struct {
     .command=CMD_IMMEDIATE },
   { .name="--nt-service" },
   { .name="-nt-service" },
+  { .name="--dbg-dump-subsystem-list",
+    .command=CMD_IMMEDIATE,
+    .quiet=QUIET_HUSH },
   { .name=NULL },
 };
 
@@ -4604,6 +4607,10 @@ options_init_from_torrc(int argc, char **argv)
     list_deprecated_options();
     return 1;
   }
+  if (config_line_find(cmdline_only_options, "--dbg-dump-subsystem-list")) {
+    subsystems_dump_list();
+    return 1;
+  }
 
   if (config_line_find(cmdline_only_options, "--version")) {
     printf("Tor version %s.\n",get_version());