Fix segfault if siginfo_t* is NULL in sigaction handler (fixes #1926)

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@2409 152afb58-edef-0310-8abb-c4023f1b3aa9
13 years ago · 4533af7668
2 changed files with 4 additions and 0 deletions
--- a/1
+++ b/1
@ -13,6 +13,7 @@ NEWS
  * Treat EPIPE as connection-closed error in network_freebsd_sendfile.c (another fix from #1913)
  * Fix useless redirection of stderr in mod_rrdtool, as it gets redirected to /dev/null later. (fixes #1922)
  * Fix some problems with more strict compilers (#1923)
+  * Fix segfault if siginfo_t* is NULL in sigaction handler (fixes #1926)

 - 1.4.21 - 2009-02-16

--- a/src/server.c
+++ b/src/server.c
@ -75,8 +75,11 @@ static volatile siginfo_t last_sigterm_info;
 static volatile siginfo_t last_sighup_info;

 static void sigaction_handler(int sig, siginfo_t *si, void *context) {
+	static siginfo_t empty_siginfo;
 	UNUSED(context);

+	if (!si) si = &empty_siginfo;
+
 	switch (sig) {
 	case SIGTERM:
 		srv_shutdown = 1;