[PATCH v1 4/5] pb-discover: Fix signal handler

[Geoff Levand]

Variables shared between signal handlers and the main program
need to be of type 'volatile sig_atomic_t'.  Also, after a
signal is serviced it should be re-enabled, so add a call to
signal() in the handler.

Signed-off-by: Geoff Levand <geoff at infradead.org>
---
 discover/pb-discover.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/discover/pb-discover.c b/discover/pb-discover.c
index e2b36dd..f67eea5 100644
--- a/discover/pb-discover.c
+++ b/discover/pb-discover.c
@@ -113,11 +113,12 @@ static int opts_parse(struct opts *opts, int argc, char *argv[])
 	return optind != argc;
 }
 
-static int running;
+static volatile sig_atomic_t running;
 
-static void sigint_handler(int __attribute__((unused)) signum)
+static void sigint_handler(int signum)
 {
 	running = 0;
+	signal(signum, sigint_handler);
 }
 
 int main(int argc, char *argv[])
-- 
2.20.1