[CRIU] [PATCH] sk-tcp: Print libsoccr_save() error message

[Andrei Vagin]

Applied, thanks!
On Wed, Aug 30, 2017 at 03:28:23PM +0300, Kirill Tkhai wrote:
> Improve dump_tcp_conn_state() *debugibility*.
> 
> Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
> ---
>  criu/sk-tcp.c |    4 +++-
>  soccr/soccr.c |    4 ++--
>  2 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/criu/sk-tcp.c b/criu/sk-tcp.c
> index 3f9342495..c4354b345 100644
> --- a/criu/sk-tcp.c
> +++ b/criu/sk-tcp.c
> @@ -114,8 +114,10 @@ static int dump_tcp_conn_state(struct inet_sk_desc *sk)
>  	struct libsoccr_sk_data data;
>  
>  	ret = libsoccr_save(socr, &data, sizeof(data));
> -	if (ret < 0)
> +	if (ret < 0) {
> +		pr_err("libsoccr_save() failed with %d\n", ret);
>  		goto err_r;
> +	}
>  	if (ret != sizeof(data)) {
>  		pr_err("This libsocr is not supported (%d vs %d)\n",
>  				ret, (int)sizeof(data));
> diff --git a/soccr/soccr.c b/soccr/soccr.c
> index 583f1eaaa..48469aaab 100644
> --- a/soccr/soccr.c
> +++ b/soccr/soccr.c
> @@ -374,10 +374,10 @@ int libsoccr_save(struct libsoccr_sk *sk, struct libsoccr_sk_data *data, unsigne
>  	sk->flags |= SK_FLAG_FREE_SQ | SK_FLAG_FREE_RQ;
>  
>  	if (get_queue(sk->fd, TCP_RECV_QUEUE, &data->inq_seq, data->inq_len, &sk->recv_queue))
> -		return -4;
> +		return -5;
>  
>  	if (get_queue(sk->fd, TCP_SEND_QUEUE, &data->outq_seq, data->outq_len, &sk->send_queue))
> -		return -5;
> +		return -6;
>  
>  	return sizeof(struct libsoccr_sk_data);
>  }
>