1/*	$NetBSD: login.c,v 1.15 2002/09/27 20:42:47 jdolecek Exp $	*/
2
3/*
4 * Copyright (c) 1988, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#if defined(LIBC_SCCS) && !defined(lint)
34#if 0
35static char sccsid[] = "@(#)login.c	8.1 (Berkeley) 6/4/93";
36#else
37__RCSID("$NetBSD: login.c,v 1.15 2002/09/27 20:42:47 jdolecek Exp $");
38#endif
39#endif /* LIBC_SCCS and not lint */
40
41#include <sys/types.h>
42
43#include <assert.h>
44#include <errno.h>
45#include <fcntl.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <unistd.h>
49#include <util.h>
50#include <utmp.h>
51
52void
53login(const struct utmp *ut)
54{
55	int fd;
56	int tty;
57
58	_DIAGASSERT(ut != NULL);
59
60	tty = ttyslot();
61	if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY|O_CREAT, 0644)) >= 0) {
62		(void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET);
63		(void)write(fd, ut, sizeof(struct utmp));
64		(void)close(fd);
65	}
66	if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
67		(void)write(fd, ut, sizeof(struct utmp));
68		(void)close(fd);
69	}
70}
71