xref: /csrg-svn/lib/libutil/login.c (revision 37446)
135743Sbostic /*
235743Sbostic  * Copyright (c) 1988 The Regents of the University of California.
335743Sbostic  * All rights reserved.
435743Sbostic  *
535743Sbostic  * Redistribution and use in source and binary forms are permitted
635743Sbostic  * provided that the above copyright notice and this paragraph are
735743Sbostic  * duplicated in all such forms and that any documentation,
835743Sbostic  * advertising materials, and other materials related to such
935743Sbostic  * distribution and use acknowledge that the software was developed
1035743Sbostic  * by the University of California, Berkeley.  The name of the
1135743Sbostic  * University may not be used to endorse or promote products derived
1235743Sbostic  * from this software without specific prior written permission.
1335743Sbostic  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
1435743Sbostic  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
1535743Sbostic  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
1635743Sbostic  */
1735743Sbostic 
1835743Sbostic #if defined(LIBC_SCCS) && !defined(lint)
19*37446Sbostic static char sccsid[] = "@(#)login.c	5.2 (Berkeley) 04/18/89";
2035743Sbostic #endif /* LIBC_SCCS and not lint */
2135743Sbostic 
2235743Sbostic #include <sys/types.h>
2335743Sbostic #include <sys/file.h>
2435743Sbostic #include <utmp.h>
2535743Sbostic #include <stdio.h>
2635743Sbostic 
2735743Sbostic void
2835743Sbostic login(ut)
2935743Sbostic 	struct utmp *ut;
3035743Sbostic {
3135743Sbostic 	register int fd;
3235743Sbostic 	int tty;
3335743Sbostic 	off_t lseek();
3435743Sbostic 
3535743Sbostic 	tty = ttyslot();
36*37446Sbostic 	if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY, 0)) >= 0) {
3735743Sbostic 		(void)lseek(fd, (long)(tty * sizeof(struct utmp)), L_SET);
3835743Sbostic 		(void)write(fd, (char *)ut, sizeof(struct utmp));
3935743Sbostic 		(void)close(fd);
4035743Sbostic 	}
41*37446Sbostic 	if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
4235743Sbostic 		(void)write(fd, (char *)ut, sizeof(struct utmp));
4335743Sbostic 		(void)close(fd);
4435743Sbostic 	}
4535743Sbostic }
46