diff --git a/usr.sbin/mopd/common/log.c b/usr.sbin/mopd/common/log.c
new file mode 100644
index 000000000000..9309ee8972c4
--- /dev/null
+++ b/usr.sbin/mopd/common/log.c
@@ -0,0 +1,110 @@
+/*	$NetBSD: log.c,v 1.1 2003/04/20 00:17:42 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: log.c,v 1.1 2003/04/20 00:17:42 christos Exp $");
+#endif
+
+#include <err.h>
+#include <stdarg.h>
+#include "os.h"
+#include "mopdef.h"
+#include "log.h"
+
+int mopInteractive = 0;
+
+void
+mopLogErr(const char *fmt, ...)
+{
+	va_list ap;
+	char buf[1024];
+
+	va_start(ap, fmt);
+	if (mopInteractive)
+		verr(1, fmt, ap);
+	else {
+		snprintf(buf, sizeof(buf), "%s: %%m", buf);
+		vsyslog(LOG_ERR, buf, ap);
+	}
+	va_end(ap);
+	exit(1);
+}
+
+void
+mopLogWarn(const char *fmt, ...)
+{
+	va_list ap;
+	char buf[1024];
+
+	va_start(ap, fmt);
+	if (mopInteractive)
+		vwarn(fmt, ap);
+	else {
+		snprintf(buf, sizeof(buf), "%s: %%m", buf);
+		vsyslog(LOG_WARNING, buf, ap);
+	}
+	va_end(ap);
+}
+
+void
+mopLogErrX(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (mopInteractive)
+		verrx(1, fmt, ap);
+	else
+		vsyslog(LOG_ERR, fmt, ap);
+	va_end(ap);
+	exit(1);
+}
+
+void
+mopLogWarnX(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	if (mopInteractive)
+		vwarnx(fmt, ap);
+	else
+		vsyslog(LOG_WARNING, fmt, ap);
+	va_end(ap);
+}
diff --git a/usr.sbin/mopd/common/log.h b/usr.sbin/mopd/common/log.h
new file mode 100644
index 000000000000..40a6f6272164
--- /dev/null
+++ b/usr.sbin/mopd/common/log.h
@@ -0,0 +1,54 @@
+/*	$NetBSD: log.h,v 1.1 2003/04/20 00:17:42 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2003 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _LOG_H_
+#define _LOG_H_
+
+__BEGIN_DECLS
+extern int mopInteractive;
+void	mopLogErr __P((const char *, ...))
+    __attribute__((__format__(__printf__, 1, 2))); 
+void	mopLogErrX __P((const char *, ...))
+    __attribute__((__format__(__printf__, 1, 2))); 
+void	mopLogWarn __P((const char *, ...))
+    __attribute__((__format__(__printf__, 1, 2))); 
+void	mopLogWarnX __P((const char *, ...))
+    __attribute__((__format__(__printf__, 1, 2))); 
+__END_DECLS
+
+#endif /* _LOG_H_ */