linux-kernel - [PATCH 23/33] Handling SIG TERM of the daemon

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Date:	Thu, 20 Mar 2014 15:12:10 +0530
From:	Janani Venkataraman <jananive@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	amwang@...hat.com, procps@...elists.org, rdunlap@...otime.net,
	james.hogan@...tec.com, aravinda@...ux.vnet.ibm.com, hch@....de,
	mhiramat@...hat.com, jeremy.fitzhardinge@...rix.com,
	xemul@...allels.com, d.hatayama@...fujitsu.com, coreutils@....org,
	kosaki.motohiro@...fujitsu.com, adobriyan@...il.com,
	util-linux@...r.kernel.org, tarundsk@...ux.vnet.ibm.com,
	vapier@...too.org, roland@...k.frob.com, ananth@...ux.vnet.ibm.com,
	gorcunov@...nvz.org, avagin@...nvz.org, oleg@...hat.com,
	eparis@...hat.com, suzuki@...ux.vnet.ibm.com, andi@...stfloor.org,
	tj@...nel.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: [PATCH 23/33] Handling SIG TERM of the daemon

We handle SIGTERM on the daemon, by closing the socket opened for that
connection.

Signed-off-by: Janani Venkataraman <jananive@...ux.vnet.ibm.com>
---
 src/coredump.c |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/coredump.c b/src/coredump.c
index 72ba8d8..c0da457 100755
--- a/src/coredump.c
+++ b/src/coredump.c
@@ -562,6 +562,17 @@ int handle_request(void)
 	return 0;
 }
 
+/* Handles Signals to the Daemon */
+void sig_daemon_handler(int sig)
+{
+	close(socket_fd);
+	unlink(SOCKET_PATH);
+
+	gencore_log("[%d]: Cleanup done and daemon exiting.\n", pid_log);
+
+	fclose(fp_log);
+}
+
 /* Daemon for self dump */
 int daemon_dump(void)
 {
@@ -602,6 +613,11 @@ int daemon_dump(void)
 	/* SIGCHILD - Signal handler */
 	signal(SIGCHLD, sigchild_handler);
 
+	/* Terminate Daemon - signal handler */
+	signal(SIGTERM, sig_daemon_handler);
+	signal(SIGSEGV, sig_daemon_handler);
+	signal(SIGPIPE, sig_daemon_handler);
+
 	while (1) {
 
 		/* Blocks on request */

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