--- /dev/null
+++ Libc/Libc-583/util/logout.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 1999, 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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/types.h>
+#include <sys/time.h>
+
+#ifdef UTMP_COMPAT
+#include <utmp.h>
+#endif /* UTMP_COMPAT */
+#include <utmpx.h>
+#include <utmpx-darwin.h>
+#include <unistd.h>
+#include <string.h>
+
+int
+logout(char *line)
+{
+	struct utmpx *ux, utx;
+#ifdef UTMP_COMPAT
+#ifdef __LP64__
+	struct utmp32 u;
+#else /* __LP64__ */
+	struct utmp u;
+#endif /* __LP64__ */
+	int which;
+#endif /* UTMP_COMPAT */
+
+	bzero(&utx, sizeof(utx));
+	strncpy(utx.ut_line, line, sizeof(utx.ut_line));
+	utx.ut_type = UTMPX_AUTOFILL_MASK | UTMPX_DEAD_IF_CORRESPONDING_MASK | DEAD_PROCESS;
+	(void)gettimeofday(&utx.ut_tv, NULL);
+	UTMPX_LOCK;
+	_setutxent();
+	ux = _pututxline(&utx);
+	_endutxent();
+	if (!ux) {
+		UTMPX_UNLOCK;
+		return 0;
+	}
+#ifdef UTMP_COMPAT
+	if (utfile_system) { /* only if we are using _PATH_UTMPX */
+		which = _utmp_compat(ux, &u);
+		if (which & UTMP_COMPAT_UTMP0)
+			_write_utmp(&u, 0);
+		else if (which & UTMP_COMPAT_UTMP1)
+			_write_utmp(&u, 1);
+	}
+#endif /* UTMP_COMPAT */
+	UTMPX_UNLOCK;
+	return 1;
+}