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freebsd-dev/lib/libutil/login_tty.3

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.\"
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.\" Copyright (c) 1996 Joerg Wunsch
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.\"
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.\" All rights reserved.
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.\"
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``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 DEVELOPERS 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.
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.\"
$Id$ -> $FreeBSD$
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.\" $FreeBSD$
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.\" "
.Dd December 29, 1996
.Os
.Dt LOGIN_TTY 3
.Sh NAME
.Nm login_tty
.Nd prepare a tty for a new login session
Introduce .Lb macro to libutil manpages Sort .Nm values in some manpages Remove explicit note about compiling with -lutil, it's implicitly declared by .Lb macro now.
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.Sh LIBRARY
.Lb libutil
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.Sh SYNOPSIS
mdoc(7) police: Use the new .In macro for #include statements.
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.In libutil.h
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.Ft int
.Fn login_tty "int fd"
.Sh DESCRIPTION
The function
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.Fn login_tty
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prepares a terminal for a new login session.
The file descriptor
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.Ar fd
passed to
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.Fn login_tty
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must be opened for reading and writing on a terminal device.
It will be
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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made the controlling terminal for the calling process, after allocating
a new session with
.Xr setsid 2 .
This terminal device will also be made the standard input, standard output,
and standard error output of the calling process.
.Sh RETURN VALUES
The .Fn function
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The
.Fn login_tty
function returns -1 if it could not make the device referenced by
Finally document the interfaces found in libutil. While being here, also add the missing declaration of forkpty() to libutil.h. Btw., the calling interface for login(3) is crude. Some better abstraction is needed, perhaps similar to logwtmp(3). 2.2 candidate, but i'll wait for the spelling police first. :)
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.Ar fd
the controlling terminal of the calling process, and 0 otherwise.
.Sh SEE ALSO
.Xr dup2 2 ,
.Xr ioctl 2 ,
.Xr setsid 2 ,
.Xr tty 4
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