From ec60a2cc82641b97e061abbfe0455bffead73c58 Mon Sep 17 00:00:00 2001
From: Xiaoxi Chen <xiaoxi.chen@intel.com>
Date: Wed, 8 Apr 2015 21:43:29 +0800
Subject: [PATCH] os/KeyValueDB: return -ENOENT if key doesn't exist

Previous code return 0 in all cases, caller doesn't
know if the key is exists in the db.

Signed-off-by: Xiaoxi Chen <xiaoxi.chen@intel.com>
---
 src/os/KeyValueDB.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/os/KeyValueDB.h b/src/os/KeyValueDB.h
index 80fdceca81658..028243667dbb1 100644
--- a/src/os/KeyValueDB.h
+++ b/src/os/KeyValueDB.h
@@ -93,7 +93,12 @@ public:
     ks.insert(key);
     map<string,bufferlist> om;
     int r = get(prefix, ks, &om);
-    *value = om[key];
+    if (om.find(key) != om.end()) {
+      *value = om[key];
+    } else {
+      *value = bufferlist();
+      r = -ENOENT;
+    }
     return r;
   }
 
-- 
2.39.5