Use sigaction for better SIGCHLD handling on linux

1 files changed, 9 insertions, 1 deletions

diff --git a/main.c b/main.c
index 52d10bd..0b4886b 100644
--- a/main.c
+++ b/main.c
@@ -1,3 +1,4 @@
+#define _GNU_SOURCE // sigaction
 #include <stdio.h>
 #include <stdbool.h>
 #include <string.h>
@@ -142,7 +143,14 @@ int main(int argc,char **argv){
 		return 1;
 	}
 
-	signal(SIGCHLD,signal_handler);
+	struct sigaction sa;
+	sa.sa_handler=signal_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags=SA_RESTART;
+	if(sigaction(SIGCHLD,&sa,NULL)<0){
+		perror("sigaction");
+		return 1;
+	}
 
 	printf("Listening on port %d\n",PORT);