| /*- |
| * Copyright (c) 1990, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #if defined(LIBC_SCCS) && !defined(lint) |
| static char sccsid[] = "@(#)login_tty.c 8.1 (Berkeley) 6/4/93"; |
| #endif /* LIBC_SCCS and not lint */ |
| |
| #include <errno.h> |
| #include <sys/param.h> |
| #include <sys/ioctl.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <utmp.h> |
| |
| int |
| login_tty (int fd) |
| { |
| (void) setsid(); |
| #ifdef TIOCSCTTY |
| if (ioctl(fd, TIOCSCTTY, (char *)NULL) == -1) |
| return (-1); |
| #else |
| { |
| /* This might work. */ |
| char *fdname = ttyname (fd); |
| int newfd; |
| if (fdname) |
| { |
| if (fd != 0) |
| (void) close (0); |
| if (fd != 1) |
| (void) close (1); |
| if (fd != 2) |
| (void) close (2); |
| newfd = open (fdname, O_RDWR); |
| (void) close (newfd); |
| } |
| } |
| #endif |
| while (dup2(fd, 0) == -1 && errno == EBUSY) |
| ; |
| while (dup2(fd, 1) == -1 && errno == EBUSY) |
| ; |
| while (dup2(fd, 2) == -1 && errno == EBUSY) |
| ; |
| if (fd > 2) |
| (void) close(fd); |
| return (0); |
| } |
| libutil_hidden_def (login_tty) |
