NSSWITCH_BACK
stat_ret = stat(NSSWITCH_BACK, &buf);
NSSWITCH_BACK, stat_ret);
retcode = file_move(NSSWITCH_BACK, NSSWITCH_CONF);
NSSWITCH_BACK, NSSWITCH_CONF, retcode);
NSSWITCH_BACK, NSSWITCH_CONF);
NSSWITCH_CONF, NSSWITCH_BACK);
retcode = file_move(NSSWITCH_CONF, NSSWITCH_BACK);
NSSWITCH_CONF, NSSWITCH_BACK, retcode);