1*2b8aaed8Splunky /* $NetBSD: login_tty.c,v 1.13 2011/09/16 16:13:16 plunky Exp $ */
2f5646a08Schristos
361f28255Scgd /*-
43a724adbScgd * Copyright (c) 1990, 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.
15eb7c1594Sagc * 3. Neither the name of the University nor the names of its contributors
1661f28255Scgd * may be used to endorse or promote products derived from this software
1761f28255Scgd * without specific prior written permission.
1861f28255Scgd *
1961f28255Scgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
2061f28255Scgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
2161f28255Scgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
2261f28255Scgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
2361f28255Scgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
2461f28255Scgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
2561f28255Scgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2661f28255Scgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
2761f28255Scgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
2861f28255Scgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
2961f28255Scgd * SUCH DAMAGE.
3061f28255Scgd */
3161f28255Scgd
32f5646a08Schristos #include <sys/cdefs.h>
3361f28255Scgd #if defined(LIBC_SCCS) && !defined(lint)
34e42a9484Sjtc #if 0
35e42a9484Sjtc static char sccsid[] = "@(#)login_tty.c 8.1 (Berkeley) 6/4/93";
36e42a9484Sjtc #else
37*2b8aaed8Splunky __RCSID("$NetBSD: login_tty.c,v 1.13 2011/09/16 16:13:16 plunky Exp $");
38e42a9484Sjtc #endif
3961f28255Scgd #endif /* LIBC_SCCS and not lint */
4061f28255Scgd
4161f28255Scgd #include <sys/param.h>
4261f28255Scgd #include <sys/ioctl.h>
43b48252f3Slukem
44b48252f3Slukem #include <assert.h>
45b48252f3Slukem #include <errno.h>
468347998aSpk #include <unistd.h>
47e42a9484Sjtc #include <util.h>
488347998aSpk
498347998aSpk int
login_tty(int fd)50fce98185Sad login_tty(int fd)
5161f28255Scgd {
52b48252f3Slukem
53b48252f3Slukem _DIAGASSERT(fd != -1);
54b48252f3Slukem
5561f28255Scgd (void) setsid();
56*2b8aaed8Splunky if (ioctl(fd, TIOCSCTTY, NULL) == -1)
5761f28255Scgd return (-1);
58c60100b1Sdholland (void) dup2(fd, STDIN_FILENO);
59c60100b1Sdholland (void) dup2(fd, STDOUT_FILENO);
60c60100b1Sdholland (void) dup2(fd, STDERR_FILENO);
61c60100b1Sdholland if (fd != STDIN_FILENO && fd != STDOUT_FILENO && fd != STDERR_FILENO)
6261f28255Scgd (void) close(fd);
6361f28255Scgd return (0);
6461f28255Scgd }
65