xref: /netbsd/lib/libutil/login.c (revision 66105c37)
1*66105c37Skleink /*	$NetBSD: login.c,v 1.8 1997/08/25 19:31:46 kleink Exp $	*/
2f5646a08Schristos 
361f28255Scgd /*
43a724adbScgd  * Copyright (c) 1988, 1993
53a724adbScgd  *	The Regents of the University of California.  All rights reserved.
661f28255Scgd  *
761f28255Scgd  * Redistribution and use in source and binary forms, with or without
861f28255Scgd  * modification, are permitted provided that the following conditions
961f28255Scgd  * are met:
1061f28255Scgd  * 1. Redistributions of source code must retain the above copyright
1161f28255Scgd  *    notice, this list of conditions and the following disclaimer.
1261f28255Scgd  * 2. Redistributions in binary form must reproduce the above copyright
1361f28255Scgd  *    notice, this list of conditions and the following disclaimer in the
1461f28255Scgd  *    documentation and/or other materials provided with the distribution.
1561f28255Scgd  * 3. All advertising materials mentioning features or use of this software
1661f28255Scgd  *    must display the following acknowledgement:
1761f28255Scgd  *	This product includes software developed by the University of
1861f28255Scgd  *	California, Berkeley and its contributors.
1961f28255Scgd  * 4. Neither the name of the University nor the names of its contributors
2061f28255Scgd  *    may be used to endorse or promote products derived from this software
2161f28255Scgd  *    without specific prior written permission.
2261f28255Scgd  *
2361f28255Scgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2461f28255Scgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2561f28255Scgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2661f28255Scgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2761f28255Scgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2861f28255Scgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2961f28255Scgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
3061f28255Scgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
3161f28255Scgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
3261f28255Scgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
3361f28255Scgd  * SUCH DAMAGE.
3461f28255Scgd  */
3561f28255Scgd 
36f5646a08Schristos #include <sys/cdefs.h>
3761f28255Scgd #if defined(LIBC_SCCS) && !defined(lint)
38e42a9484Sjtc #if 0
39e42a9484Sjtc static char sccsid[] = "@(#)login.c	8.1 (Berkeley) 6/4/93";
40e42a9484Sjtc #else
41*66105c37Skleink __RCSID("$NetBSD: login.c,v 1.8 1997/08/25 19:31:46 kleink Exp $");
42e42a9484Sjtc #endif
4361f28255Scgd #endif /* LIBC_SCCS and not lint */
4461f28255Scgd 
4561f28255Scgd #include <sys/types.h>
463a724adbScgd 
473a724adbScgd #include <fcntl.h>
483a724adbScgd #include <unistd.h>
493a724adbScgd #include <stdlib.h>
5061f28255Scgd #include <utmp.h>
5161f28255Scgd #include <stdio.h>
52e42a9484Sjtc #include <util.h>
538347998aSpk 
5461f28255Scgd void
5561f28255Scgd login(ut)
5661f28255Scgd 	struct utmp *ut;
5761f28255Scgd {
5861f28255Scgd 	register int fd;
5961f28255Scgd 	int tty;
6061f28255Scgd 
6161f28255Scgd 	tty = ttyslot();
6261f28255Scgd 	if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY|O_CREAT, 0644)) >= 0) {
63*66105c37Skleink 		(void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET);
643a724adbScgd 		(void)write(fd, ut, sizeof(struct utmp));
6561f28255Scgd 		(void)close(fd);
6661f28255Scgd 	}
6761f28255Scgd 	if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
683a724adbScgd 		(void)write(fd, ut, sizeof(struct utmp));
6961f28255Scgd 		(void)close(fd);
7061f28255Scgd 	}
7161f28255Scgd }
72