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

[Jaroslav Kysela]

Dne 12. 04. 20 v 4:15 Takashi Sakamoto napsal(a):
> 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
> 


-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.