From 71e4649f02940806c8be2b8349aeb2029f2721a0 Mon Sep 17 00:00:00 2001
From: Nick Mathewson <nickm@torproject.org>
Date: Wed, 30 Sep 2015 18:33:02 +0200
Subject: [PATCH] Disallow transitions on SyslogIdentityTag, since they do not
 work right

---
 src/or/config.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/or/config.c b/src/or/config.c
index 9b65addee..f8fc757a2 100644
--- a/src/or/config.c
+++ b/src/or/config.c
@@ -3997,6 +3997,12 @@ options_transition_allowed(const or_options_t *old,
     return -1;
   }
 
+  if (!opt_streq(old->SyslogIdentityTag, new_val->SyslogIdentityTag)) {
+    *msg = tor_strdup("While Tor is running, changing "
+                      "SyslogIdentityTag is not allowed.");
+    return -1;
+  }
+
   if ((old->HardwareAccel != new_val->HardwareAccel)
       || !opt_streq(old->AccelName, new_val->AccelName)
       || !opt_streq(old->AccelDir, new_val->AccelDir)) {