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      1 /*	$NetBSD: compat_login.c,v 1.2 2009/01/11 02:57:18 christos 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
     35 static char sccsid[] = "@(#)login.c	8.1 (Berkeley) 6/4/93";
     36 #else
     37 __RCSID("$NetBSD: compat_login.c,v 1.2 2009/01/11 02:57:18 christos Exp $");
     38 #endif
     39 #endif /* LIBC_SCCS and not lint */
     40 
     41 #define __LIBC12_SOURCE__
     42 #include <sys/types.h>
     43 
     44 #include <assert.h>
     45 #include <errno.h>
     46 #include <fcntl.h>
     47 #include <stdio.h>
     48 #include <string.h>
     49 #include <stdlib.h>
     50 #include <unistd.h>
     51 #include <util.h>
     52 #include <compat/util.h>
     53 #include <utmp.h>
     54 #include <compat/include/utmp.h>
     55 
     56 __warn_references(login,
     57     "warning: reference to compatibility login(); include <util.h> to generate correct reference")
     58 
     59 void
     60 login(const struct utmp50 *ut50)
     61 {
     62 	int fd;
     63 	int tty;
     64 	struct utmp ut;
     65 
     66 	utmp50_to_utmp(ut50, &ut);
     67 
     68 	tty = ttyslot();
     69 	if (tty > 0 && (fd = open(_PATH_UTMP, O_WRONLY|O_CREAT, 0644)) >= 0) {
     70 		(void)lseek(fd, (off_t)(tty * sizeof(struct utmp)), SEEK_SET);
     71 		(void)write(fd, &ut, sizeof(ut));
     72 		(void)close(fd);
     73 	}
     74 	if ((fd = open(_PATH_WTMP, O_WRONLY|O_APPEND, 0)) >= 0) {
     75 		(void)write(fd, &ut, sizeof(ut));
     76 		(void)close(fd);
     77 	}
     78 }
     79