[package] uhttpd: block SIGCHLD until it is expected (#6957)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/package/uhttpd/src@20513 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 9 insertions, 1 deletions

diff --git a/uhttpd.c b/uhttpd.c
index 97c4f83..be13b53 100644
--- a/uhttpd.c
+++ b/uhttpd.c
@@ -410,6 +410,9 @@ int main (int argc, char **argv)
 	struct sigaction sa;
 	struct config conf;
 
+	/* signal mask */
+	sigset_t ss;
+
 	/* maximum file descriptor number */
 	int new_fd, cur_fd, max_fd = 0;
 
@@ -432,7 +435,7 @@ int main (int argc, char **argv)
 	FD_ZERO(&serv_fds);
 	FD_ZERO(&read_fds);
 
-	/* handle SIGPIPE, SIGCHILD */
+	/* handle SIGPIPE, SIGINT, SIGTERM, SIGCHLD */
 	sa.sa_flags = 0;
 	sigemptyset(&sa.sa_mask);
 
@@ -446,6 +449,11 @@ int main (int argc, char **argv)
 	sigaction(SIGINT,  &sa, NULL);
 	sigaction(SIGTERM, &sa, NULL);
 
+	/* defer SIGCHLD */
+	sigemptyset(&ss);
+	sigaddset(&ss, SIGCHLD);
+	sigprocmask(SIG_BLOCK, &ss, NULL);
+
 	/* prepare addrinfo hints */
 	memset(&hints, 0, sizeof(hints));
 	hints.ai_family   = AF_UNSPEC;