block: support extroot on already mounted overlay

Try to find extroot configuration on already mounted overlay

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

diff --git a/block.c b/block.c
index 4b45200ad3812f5b79bda5d53c72a13ca5e92636..28eac598b37fc7f998e9ed26843fd364968983d8 100644 (file)
--- a/block.c
+++ b/block.c
@@ -1646,6 +1646,11 @@ static int main_extroot(int argc, char **argv)
        /* enable LOG_INFO messages */
        ulog_threshold(LOG_INFO);
 
+       /* try the currently mounted overlay if exists */
+       err = mount_extroot("/tmp/overlay");
+       if (!err)
+           return err;
+
        /*
         * Look for "rootfs_data". We will want to mount it and check for
         * extroot configuration.