[CRIU] [PATCH v4 23/33] files: Set fds event after sending fd to peer

[Pavel Emelyanov]

On 12/13/2016 06:07 PM, Kirill Tkhai wrote:
> This is need to make receiving a fle non-blocking.
> We will sleep on task_st futex instead of this.
> 
> Signed-off-by: Kirill Tkhai <ktkhai at virtuozzo.com>
> ---
>  criu/files.c |    9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/criu/files.c b/criu/files.c
> index 73c23b4..a5568cf 100644
> --- a/criu/files.c
> +++ b/criu/files.c
> @@ -928,13 +928,16 @@ int recv_fd_from_peer(struct fdinfo_list_entry *fle)
>  int send_fd_to_peer(int fd, struct fdinfo_list_entry *fle)
>  {
>  	struct sockaddr_un saddr;
> -	int len, sock;
> +	int len, sock, ret;
>  
>  	sock = get_service_fd(TRANSPORT_FD_OFF);
>  
>  	transport_name_gen(&saddr, &len, fle->pid);
>  	pr_info("\t\tSend fd %d to %s\n", fd, saddr.sun_path + 1);
> -	return send_fds(sock, &saddr, len, &fd, 1, (void *)&fle, sizeof(struct fdinfo_list_entry *));
> +	ret = send_fds(sock, &saddr, len, &fd, 1, (void *)&fle, sizeof(struct fdinfo_list_entry *));
> +	if (ret < 0)
> +		return -1;
> +	return set_fds_event(fle->pid);
>  }
>  
>  static int send_fd_to_self(int fd, struct fdinfo_list_entry *fle)
> @@ -963,7 +966,7 @@ static int send_fd_to_self(int fd, struct fdinfo_list_entry *fle)
>  
>  	fle->received = 1;
>  
> -	return 0;
> +	return set_fds_event(fle->pid);

This is send_fd_to_self(). __Self__, why waking up self?

>  }
>  
>  static int post_open_fd(int pid, struct fdinfo_list_entry *fle)
> 
> .
>