From f4aabcee62890b7c3e999e188ab72752fbb20b79 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sat, 13 Feb 1999 20:15:36 +0000
Subject: Perform gracious shutdown upon receipt of SIGTERM. Finally we can
 test the whole protocol shutdown code... :)

---
 sysdep/unix/io.c   |  8 ++++++++
 sysdep/unix/main.c | 30 ++++++++++++++++++++++++++++++
 sysdep/unix/unix.h |  2 ++
 3 files changed, 40 insertions(+)

(limited to 'sysdep/unix')

diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index d8713f4..aa4f652 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -747,11 +747,19 @@ io_loop(void)
 	{
 	  async_config();
 	  async_config_flag = 0;
+	  continue;
 	}
       if (async_dump_flag)
 	{
 	  async_dump();
 	  async_dump_flag = 0;
+	  continue;
+	}
+      if (async_shutdown_flag)
+	{
+	  async_shutdown();
+	  async_shutdown_flag = 0;
+	  continue;
 	}
 
       /* And finally enter select() to find active sockets */
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index 7b30653..71bb712 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -26,6 +26,8 @@
 #include "unix.h"
 #include "krt.h"
 
+int shutting_down;
+
 /*
  *	Debugging
  */
@@ -82,6 +84,24 @@ async_config(void)
   debug("Asynchronous reconfigurations are not supported in demo version\n");
 }
 
+/*
+ *	Shutdown
+ */
+
+void
+async_shutdown(void)
+{
+  debug("Shutting down...\n");
+  shutting_down = 1;
+  protos_shutdown();
+}
+
+void
+protos_shutdown_notify(void)
+{
+  die("System shutdown completed");
+}
+
 /*
  *	Signals
  */
@@ -100,6 +120,13 @@ handle_sigusr(int sig)
   async_dump_flag = 1;
 }
 
+static void
+handle_sigterm(int sig)
+{
+  debug("Caught SIGTERM...\n");
+  async_shutdown_flag = 1;
+}
+
 static void
 signal_init(void)
 {
@@ -112,6 +139,9 @@ signal_init(void)
   sa.sa_handler = handle_sighup;
   sa.sa_flags = SA_RESTART;
   sigaction(SIGHUP, &sa, NULL);
+  sa.sa_handler = handle_sigterm;
+  sa.sa_flags = SA_RESTART;
+  sigaction(SIGTERM, &sa, NULL);
   signal(SIGPIPE, SIG_IGN);
 }
 
diff --git a/sysdep/unix/unix.h b/sysdep/unix/unix.h
index a79db2e..e527102 100644
--- a/sysdep/unix/unix.h
+++ b/sysdep/unix/unix.h
@@ -13,11 +13,13 @@
 
 void async_config(void);
 void async_dump(void);
+void async_shutdown(void);
 
 /* io.c */
 
 volatile int async_config_flag;
 volatile int async_dump_flag;
+volatile int async_shutdown_flag;
 
 void io_init(void);
 void io_loop(void);
-- 
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