ovl: do not get metacopy for userxattr (87b2c60c) · Commits · 戴 / test

When looking up an inode on the lower layer for which the mounter lacks read permisison the metacopy check will fail. This causes the lookup to fail as well, even though the directory is readable. So ignore EACCES for the "userxattr" case and assume no metacopy for the unreadable file. Signed-off-by:

Miklos Szeredi <mszeredi@redhat.com>

fs/overlayfs/util.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -884,6 +884,13 @@ int ovl_check_metacopy_xattr(struct ovl_fs ofs, struct dentry dentry)
		if (res < 0) {
		if (res == -ENODATA \|\| res == -EOPNOTSUPP)
		return 0;
		/*
		* getxattr on user.* may fail with EACCES in case there's no
		* read permission on the inode. Not much we can do, other than
		* tell the caller that this is not a metacopy inode.
		*/
		if (ofs->config.userxattr && res == -EACCES)
		return 0;
		goto out;
		}

Admin message