1.\" 2.\" Copyright (c) 1996 Joerg Wunsch 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT, 19.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25.\" 26.\" $FreeBSD: src/lib/libutil/login_tty.3,v 1.5.2.3 2001/12/17 10:08:32 ru Exp $ 27.\" $DragonFly: src/lib/libutil/login_tty.3,v 1.2 2003/06/17 04:26:52 dillon Exp $ 28.\" " 29.Dd December 29, 1996 30.Os 31.Dt LOGIN_TTY 3 32.Sh NAME 33.Nm login_tty 34.Nd prepare a tty for a new login session 35.Sh LIBRARY 36.Lb libutil 37.Sh SYNOPSIS 38.In sys/types.h 39.In libutil.h 40.Ft int 41.Fn login_tty "int fd" 42.Sh DESCRIPTION 43The function 44.Fn login_tty 45prepares a terminal for a new login session. The file descriptor 46.Ar fd 47passed to 48.Fn login_tty 49must be opened for reading and writing on a terminal device. It will be 50made the controlling terminal for the calling process, after allocating 51a new session with 52.Xr setsid 2 . 53This terminal device will also be made the standard input, standard output, 54and standard error output of the calling process. 55.Sh RETURN VALUES 56.Fn Login_tty 57returns -1 if it could not make the device referenced by 58.Ar fd 59the controlling terminal of the calling process, and 0 otherwise. 60.Sh SEE ALSO 61.Xr dup2 2 , 62.Xr ioctl 2 , 63.Xr setsid 2 , 64.Xr tty 4 65