From: mbuesch@freenet.de <mbuesch@freenet.de>
Date: Tue, 30 Dec 2003 09:21:06 +0000 (-0800)
Subject: [PATCH] introduce signal handler
X-Git-Tag: 012~17
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d12ecb53cf8c5955135b94e4b671ad28dfb3a7b4;p=systemd

[PATCH] introduce signal handler

Here's a patch that adds a signal handler to udev to
clean up the environment (close the sysbus and close
the database) on kill-signals.
---

diff --git a/udev.c b/udev.c
index 71c5f1fb..1d66410b 100644
--- a/udev.c
+++ b/udev.c
@@ -28,6 +28,7 @@
 #include <unistd.h>
 #include <errno.h>
 #include <ctype.h>
+#include <signal.h>
 
 #include "udev.h"
 #include "udev_version.h"
@@ -40,6 +41,22 @@
 char **main_argv;
 char **main_envp;
 
+static void sig_handler(int signum)
+{
+	dbg("caught signal %d", signum);
+	switch (signum) {
+		case SIGINT:
+		case SIGTERM:
+		case SIGKILL:
+			sysbus_disconnect();
+			udevdb_exit();
+			exit(20 + signum);
+			break;
+		default:
+			dbg("unhandled signal");
+	}
+}
+
 static inline char *get_action(void)
 {
 	char *action;
@@ -70,7 +87,11 @@ int main(int argc, char **argv, char **envp)
 	char *devpath;
 	char *subsystem;
 	int retval = -EINVAL;
-	
+
+	signal(SIGINT, sig_handler);
+	signal(SIGTERM, sig_handler);
+	signal(SIGKILL, sig_handler);
+
 	main_argv = argv;
 	main_envp = envp;