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    Subject[PATCH 49/73] union-mount: Call union lookup functions in lookup path [ver #2]
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    From: Valerie Aurora <vaurora@redhat.com>

    Union mounts hook into the lookup path in two places: do_lookup() and
    lookup_hash().

    Original-author: Valerie Aurora <vaurora@redhat.com>
    Signed-off-by: David Howells <dhowells@redhat.com>
    ---

    fs/namei.c | 12 ++++++++++++
    1 files changed, 12 insertions(+), 0 deletions(-)

    diff --git a/fs/namei.c b/fs/namei.c
    index c0adf4c..586913f 100644
    --- a/fs/namei.c
    +++ b/fs/namei.c
    @@ -1587,6 +1587,14 @@ retry:
    }
    if (err)
    nd->flags |= LOOKUP_JUMPED;
    +
    + if (needs_lookup_union(&nd->path, path)) {
    + int err = lookup_union(nd, name, path);
    + if (err < 0)
    + return err;
    +#warning which inode?
    + }
    +
    *inode = path->dentry->d_inode;
    return 0;
    }
    @@ -2135,8 +2143,12 @@ static int lookup_hash(struct nameidata *nd, struct qstr *name,
    path->dentry = NULL;
    return PTR_ERR(result);
    }
    +
    path->mnt = nd->path.mnt;
    path->dentry = result;
    +
    + if (needs_lookup_union(&nd->path, path))
    + return lookup_union_locked(nd, name, path);
    return 0;
    }



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