tool: do not core dump with a invalid kv type

Fixes: http://tracker.ceph.com/issues/21744
Signed-off-by: Chang Liu <liuchang0812@gmail.com>

diff --git a/src/tools/ceph_kvstore_tool.cc b/src/tools/ceph_kvstore_tool.cc
index 8cd3afd56e367f5fda5d5ebb614b90c7bf0e5b89..90a8798b7fdc91d71a1f84a03a2ed7df40843d77 100644 (file)
--- a/src/tools/ceph_kvstore_tool.cc
+++ b/src/tools/ceph_kvstore_tool.cc
@@ -334,6 +334,15 @@ int main(int argc, const char *argv[])
   string path(args[1]);
   string cmd(args[2]);
 
+  if (type != "leveldb" &&
+      type != "rocksdb" &&
+      type != "bluestore-kv")  {
+
+    std::cerr << "Unrecognized type: " << args[0] << std::endl;
+    usage(argv[0]);
+    return 1;
+  }
+
   bool need_open_db = (cmd != "repair");
   StoreTool st(type, path, need_open_db);