ceph_fuse: build without "using namespace std"

* add "std::" prefix in headers
* add "using" declarations in .cc files.

so we don't rely on "using namespace std" in one or more included
headers.

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/ceph_fuse.cc b/src/ceph_fuse.cc
index b7f8a4d4b90197879f6972e2cf9fa32d9d7816f5..01858fccbe4cd2ab743c24ac0e1a67651e2bdfbe 100644 (file)
--- a/src/ceph_fuse.cc
+++ b/src/ceph_fuse.cc
@@ -47,6 +47,8 @@
 
 #define dout_context g_ceph_context
 
+using namespace std;
+
 ceph::async::io_context_pool icp;
 
 static void fuse_usage()