the fix for bug 3364300 - only allow root to run xcatbypass mode.

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@12323 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

perl-xCAT/xCAT/Client.pm

@@ -126,6 +126,12 @@ if (ref($request) eq 'HASH') { # the request is an array, not pure XML
        if (!(defined($request->{username}))) {
          $request->{username}->[0] = getpwuid($>);
        }
+
+       # only allow root to run
+       unless ($request->{username}->[0] =~ /root/) {
+         print ("WARNING: Only allow root to run XCATBYPASS mode, your current user ID is $request->{username}->[0].\n");
+         return 0;
+       }
      }
    # Load plugins from either specified or default dir
     require xCAT::Table;