Commit b8a8824c authored May 11, 2018 by Vivek Goyal Committed by Miklos Szeredi Jul 20, 2018

ovl: Check redirects for metacopy files



Right now we rely on path based lookup for data origin of metacopy upper.
This will work only if upper has not been renamed.  We solved this problem
already for merged directories using redirect.  Use same logic for metacopy
files.

This patch just goes on to check redirects for metacopy files.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

parent 0618a816

fs/overlayfs/namei.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -272,6 +272,7 @@ static int ovl_lookup_single(struct dentry base, struct ovl_lookup_data d,

		d->metacopy = err;
		d->stop = !d->metacopy;
		if (!d->metacopy \|\| d->last)
		goto out;
		} else {
		if (last_element)
		@@ -874,7 +875,6 @@ struct dentry ovl_lookup(struct inode dir, struct dentry *dentry,
		if (upperdentry && !d.is_dir) {
		unsigned int origin_ctr = 0;

		BUG_ON(d.redirect);
		/*
		* Lookup copy up origin by decoding origin file handle.
		* We may get a disconnected dentry, which is fine,

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