From mboxrd@z Thu Jan  1 00:00:00 1970
From: Will Deacon <will.deacon@arm.com>
Subject: Re: [PATCH 4/7] kvmtool: check strncpy return value
Date: Tue, 8 Nov 2016 02:10:01 +0000
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Cc: kvm@vger.kernel.org, andre.przywara@arm.com
To: "G. Campana" <gcampana+kvm@quarkslab.com>
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On Tue, Oct 18, 2016 at 06:02:56PM +0200, G. Campana wrote:
> ---
>  virtio/9p.c | 28 +++++++++++++++++++++++-----
>  1 file changed, 23 insertions(+), 5 deletions(-)
> 
> diff --git a/virtio/9p.c b/virtio/9p.c
> index cd93d06..87a579f 100644
> --- a/virtio/9p.c
> +++ b/virtio/9p.c
> @@ -424,7 +424,11 @@ static void virtio_p9_walk(struct p9_dev *p9dev,
>  	if (nwname) {
>  		struct p9_fid *fid = get_fid(p9dev, fid_val);
>  
> -		join_path(new_fid, fid->path);
> +		if (join_path(new_fid, fid->path) != 0) {
> +			errno = ENAMETOOLONG;
> +			goto err_out;
> +		}

This patch should be merged in with the introduction of join_path.

Will