Add umount call to init to unmount a filesystem

    return 0;

}

/* umount <path> */

static int do_umount(const std::vector<std::string>& args) {

  return umount(args[1].c_str());

}

static struct {

    const char *name;

    unsigned flag;

        {"mkdir",                   {1,     4,    do_mkdir}},

        {"mount_all",               {1,     kMax, do_mount_all}},

        {"mount",                   {3,     kMax, do_mount}},

        {"umount",                  {1,     1,    do_umount}},

        {"powerctl",                {1,     1,    do_powerctl}},

        {"restart",                 {1,     1,    do_restart}},

        {"restorecon",              {1,     kMax, do_restorecon}},

   Trigger an event.  Used to queue an action from another

   action.

umount <path>

   Unmount the filesystem mounted at that path.

verity_load_state

   Internal implementation detail used to load dm-verity state.