From 6f77c4d846a7b1f798139fb92c9d385545c74a02 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@inktank.com>
Date: Mon, 31 Mar 2014 15:36:26 -0700
Subject: [PATCH] config: allow unsafe setting of config values

Allow callers to set config values even when there is no observer.

Signed-off-by: Sage Weil <sage@inktank.com>
(cherry picked from commit e1418724a0da3979b1e706ccb54112d35c18f1eb)
---
 src/common/config.cc | 4 ++--
 src/common/config.h  | 5 ++++-
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/common/config.cc b/src/common/config.cc
index 23bfe35..7952aaf 100644
--- a/src/common/config.cc
+++ b/src/common/config.cc
@@ -659,7 +659,7 @@ void md_config_t::set_val_or_die(const char *key, const char *val)
   assert(ret == 0);
 }
 
-int md_config_t::set_val(const char *key, const char *val, bool meta)
+int md_config_t::set_val(const char *key, const char *val, bool meta, bool safe)
 {
   Mutex::Locker l(lock);
   if (!key)
@@ -696,7 +696,7 @@ int md_config_t::set_val(const char *key, const char *val, bool meta)
   for (int i = 0; i < NUM_CONFIG_OPTIONS; ++i) {
     config_option *opt = &config_optionsp[i];
     if (strcmp(opt->name, k.c_str()) == 0) {
-      if (internal_safe_to_start_threads) {
+      if (safe && internal_safe_to_start_threads) {
 	// If threads have been started...
 	if ((opt->type == OPT_STR) || (opt->type == OPT_ADDR) ||
 	    (opt->type == OPT_UUID)) {
diff --git a/src/common/config.h b/src/common/config.h
index 242b467..9911543 100644
--- a/src/common/config.h
+++ b/src/common/config.h
@@ -130,7 +130,10 @@ public:
 
   // Set a configuration value.
   // Metavariables will be expanded.
-  int set_val(const char *key, const char *val, bool meta=true);
+  int set_val(const char *key, const char *val, bool meta=true, bool safe=true);
+  int set_val(const char *key, const string& s, bool meta=true, bool safe=true) {
+    return set_val(key, s.c_str(), meta, safe);
+  }
 
   // Get a configuration value.
   // No metavariables will be returned (they will have already been expanded)
-- 
1.9.3