1 files changed, 72 insertions, 0 deletions
diff --git a/login/logout.c b/login/logout.c
new file mode 100644
index 0000000000..40ae25456f
--- /dev/null
+++ b/login/logout.c
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)logout.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <fcntl.h>
+#include <utmp.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct utmp UTMP;
+
+int
+logout(line)
+	register const char *line;
+{
+	register int fd;
+	UTMP ut;
+	int rval;
+
+	if ((fd = open(_PATH_UTMP, O_RDWR, 0)) < 0)
+		return(0);
+	rval = 0;
+	while (read(fd, &ut, sizeof(UTMP)) == sizeof(UTMP)) {
+		if (!ut.ut_name[0] || strncmp(ut.ut_line, line, UT_LINESIZE))
+			continue;
+		bzero(ut.ut_name, UT_NAMESIZE);
+		bzero(ut.ut_host, UT_HOSTSIZE);
+		(void)time(&ut.ut_time);
+		(void)lseek(fd, -(off_t)sizeof(UTMP), L_INCR);
+		(void)write(fd, &ut, sizeof(UTMP));
+		rval = 1;
+	}
+	(void)close(fd);
+	return(rval);
+}