Merge pull request #18374 from tchaikov/wip-ceph-C-d

ceph.in: do not panic at control+d in interactive mode

Reviewed-by: Josh Durgin <jdurgin@redhat.com>
Reviewed-by: Amit Kumar <amitkuma@redhat.com>

src/ceph.in

@@ -539,7 +539,11 @@ def new_style_command(parsed_args, cmdargs, target, sigdict, inbuf, verbose):
                 import readline  # noqa
 
             while True:
-                interactive_input = read_input()
+                try:
+                    interactive_input = read_input()
+                except EOFError:
+                    # leave user an uncluttered prompt
+                    return 0, '\n', ''
                 if interactive_input is None:
                     return 0, '', ''
                 cmdargs = parse_cmdargs(shlex.split(interactive_input))[2]