cli: fix copy to missing startup-config file

Fixes #981

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

src/bin/copy.c

@@ -287,10 +287,18 @@ static int copy(const char *src, const char *dst, const char *remote_user)
 			} else {
 				/* Direct copy for other datastores (no callbacks needed) */
 				rc = sr_copy_config(sess, NULL, srcds->datastore, timeout * 1000);
-				if (rc)
+				if (rc) {
 					emsg(sess, ERRMSG "unable to copy configuration, err %d: %s\n", rc, sr_strerror(rc));
-				else
-					set_owner(dstds->path, user);
+				} else {
+					/* Export datastore to backing file if it has one */
+					if (dstds->path) {
+						rc = systemf("sysrepocfg -d %s -X%s -f json", dstds->sysrepocfg, dstds->path);
+						if (rc)
+							fprintf(stderr, ERRMSG "failed saving %s to %s\n", srcds->name, dstds->path);
+						else
+							set_owner(dstds->path, user);
+					}
+				}
 			}
 		}
 		rc = sr_disconnect(conn);