ceph: return error code when failing to get result from admin socket

Make sure we return a non-zero result code when we fail to read something
from the admin socket.

Backport: cuttlefish, bobtail
Signed-off-by: Sage Weil <sage@inktank.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/tools/ceph.cc b/src/tools/ceph.cc
index ed6a5342807..49a0a0eced7 100644
--- a/src/tools/ceph.cc
+++ b/src/tools/ceph.cc
@@ -246,6 +246,7 @@ int do_admin_socket(string path, string cmd)
   }
   if (r < 4) {
     cerr << "read only got " << r << " bytes of 4 expected for response length; invalid command?" << std::endl;
+    r = -1;
     goto out;
   }
   len = ntohl(len);