[PATCH] alsactl: don't exit on EINTR from epoll_wait().

[Takashi Sakamoto]

On Mon, Oct 14, 2019 at 11:36:50PM -0500, Zev Weiss wrote:
> Previously, things like attaching strace to a running 'alsactl monitor'
> process would cause it to exit.
> 
> Signed-off-by: Zev Weiss <zev at bewilderbeest.net>
> ---
>  alsactl/monitor.c | 2 ++
>  1 file changed, 2 insertions(+)
 
I'm sorry but I overlooked the post. It looks good to me.

Reviewed-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>
Tested-by: Takashi Sakamoto <o-takashi at sakamocchi.jp>

> diff --git a/alsactl/monitor.c b/alsactl/monitor.c
> index 6b090e4f5c92..cf4167bee165 100644
> --- a/alsactl/monitor.c
> +++ b/alsactl/monitor.c
> @@ -342,6 +342,8 @@ static int run_dispatcher(int epfd, int sigfd, int infd, struct list_head *srcs,
>  
>  		count = epoll_wait(epfd, epev, max_ev_count, 200);
>  		if (count < 0) {
> +			if (errno == EINTR)
> +				continue;
>  			err = count;
>  			break;
>  		}
> -- 
> 2.23.0

Regards

Takashi Sakamoto