diff -up mcstrans-0.3.2/src/mcstransd.c.writepid mcstrans-0.3.2/src/mcstransd.c
--- mcstrans-0.3.2/src/mcstransd.c.writepid	2011-01-05 10:32:25.000000000 -0500
+++ mcstrans-0.3.2/src/mcstransd.c	2012-02-01 16:14:02.085806490 -0500
@@ -4,6 +4,7 @@
 #include <sys/socket.h>
 #include <sys/poll.h>
 #include <sys/stat.h>
+#include <fcntl.h>
 #include <sys/un.h>
 #include <errno.h>
 #include <stdint.h>
@@ -556,6 +557,30 @@ void dropprivs(void)
 	cap_free(new_caps);
 }
 
+static const char *pidfile = "/var/run/mcstransd.pid";
+
+static int write_pid_file(void)
+{
+	int pidfd, len;
+	char val[16];
+
+	len = snprintf(val, sizeof(val), "%u\n", getpid());
+	if (len < 0) {
+		syslog(LOG_ERR, "Pid error (%s)", strerror(errno));
+		pidfile = 0;
+		return 1;
+	}
+	pidfd = open(pidfile, O_CREAT | O_TRUNC | O_NOFOLLOW | O_WRONLY, 0644);
+	if (pidfd < 0) {
+		syslog(LOG_ERR, "Unable to set pidfile (%s)", strerror(errno));
+		pidfile = 0;
+		return 1;
+	}
+	(void)write(pidfd, val, (unsigned int)len);
+	close(pidfd);
+	return 0;
+}
+
 int
 main(int UNUSED(argc), char *argv[])
 {
@@ -582,6 +607,8 @@ main(int UNUSED(argc), char *argv[])
 	}
 #endif
 
+	write_pid_file();
+
 	syslog(LOG_NOTICE, "%s initialized", argv[0]);
 	process_connections();