1 files changed, 58 insertions, 0 deletions
diff --git a/lab06/server.c b/lab06/server.c
new file mode 100644
index 0000000..978db64
--- /dev/null
+++ b/lab06/server.c
@@ -0,0 +1,58 @@
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <syslog.h>
+#include <time.h>
+
+static void daemonize(void)
+{
+	int i;
+
+	/* fork once to go into the background */
+	switch(fork())
+	{
+		case 0: break; /* child */
+		case -1: exit(1); /* error */
+		default: exit(0); /* parent */
+	}
+
+	/* get a new process group/session, no controlling terminal */
+	if(setsid()<0) exit(1);
+
+	/* change the file mode mask */
+	umask(0);
+
+	/* close all descriptors */
+	for (i=sysconf(_SC_OPEN_MAX);i>=0;--i) close(i);
+
+	/* run in a specific directory */
+	chdir("/");
+
+	/* redirect stdio */
+	open ("/dev/null",O_RDWR);
+	(void) dup(0);
+	(void) dup(0);
+
+	/* we are now a daemon */
+}
+
+void hup_handler(int x)
+{
+	syslog(LOG_DAEMON | LOG_INFO, "Server received SIGHUP at %d\n",
+		time(0));
+        signal(SIGHUP, hup_handler);
+}
+
+int main()
+{
+	/* insert code to daemonize here */
+
+	/* install signal handler here */
+
+	while(1) {
+		sleep(1);
+	}
+}