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>

1 files changed, 5 insertions, 0 deletions

diff --git a/block.c b/block.c
index 4b45200..28eac59 100644
--- 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.