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

Previously, things like attaching strace to a running 'alsactl monitor'
process would cause it to exit.

Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Tested-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

diff --git a/alsactl/monitor.c b/alsactl/monitor.c
index 6b090e4f5c929fbaf23f3d6e14762e85d0692363..cf4167bee1653c3960e554b841ae30930f1f5c87 100644 (file)
--- 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;
                }