From: Vyacheslav Yurkov Date: Thu, 27 May 2021 17:45:45 +0000 (+0200) Subject: ovl: disable decoding null uuid with redirect_dir X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e4522bc8733dce1cb4443f1d506869781ee9caa8;p=linux.git ovl: disable decoding null uuid with redirect_dir Currently decoding origin with lower null uuid is not allowed unless user opted-in to one of the new features that require following the lower inode of non-dir upper (index, xino, metacopy). Now we add redirect_dir too to that feature list. Signed-off-by: Vyacheslav Yurkov Reviewed-by: Amir Goldstein Signed-off-by: Miklos Szeredi --- diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index b01d4147520d3..97ea35fdd933f 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -1600,7 +1600,7 @@ static bool ovl_lower_uuid_ok(struct ovl_fs *ofs, const uuid_t *uuid) * lower inode of non-dir upper. */ if (!ofs->config.index && !ofs->config.metacopy && - ofs->config.xino != OVL_XINO_ON && + !ofs->config.redirect_dir && ofs->config.xino != OVL_XINO_ON && uuid_is_null(uuid)) return false;