1997-05-29 05:48:05 +04:00
|
|
|
.\" $NetBSD: tcsetpgrp.3,v 1.2 1997/05/29 01:48:31 cgd Exp $
|
1995-04-25 04:04:21 +04:00
|
|
|
.\"
|
|
|
|
|
.\" Copyright (c) 1991 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.
|
|
|
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
|
|
|
.\" must display the following acknowledgement:
|
|
|
|
|
.\" This product includes software developed by the University of
|
|
|
|
|
.\" California, Berkeley and its contributors.
|
|
|
|
|
.\" 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.
|
|
|
|
|
.\"
|
|
|
|
|
.\" @(#)tcsetpgrp.3 5.3 (Berkeley) 3/29/92
|
|
|
|
|
.\"
|
1997-05-29 05:48:05 +04:00
|
|
|
.Dd March 29, 1992
|
1995-04-25 04:04:21 +04:00
|
|
|
.Dt TCSETPGRP 3
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm tcsetpgrp
|
|
|
|
|
.Nd set foreground process group ID
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Fd #include <sys/types.h>
|
|
|
|
|
.Fd #include <unistd.h>
|
|
|
|
|
.Ft int
|
|
|
|
|
.Fn tcsetpgrp "int fd" "pid_t pgrp_id"
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
If the process has a controlling terminal, the
|
|
|
|
|
.Nm tcsetpgrp
|
|
|
|
|
function sets the foreground process group ID associated with the
|
|
|
|
|
terminal device to
|
|
|
|
|
.Fa pgrp_id .
|
|
|
|
|
The terminal device associated with
|
|
|
|
|
.Fa fd
|
|
|
|
|
must be the controlling terminal of the calling process and the
|
|
|
|
|
controlling terminal must be currently associated with the session
|
|
|
|
|
of the calling process.
|
|
|
|
|
The value of
|
|
|
|
|
.Fa pgrp_id
|
|
|
|
|
must be the same as the process group ID of a process in the same
|
|
|
|
|
session as the calling process.
|
|
|
|
|
.Pp
|
|
|
|
|
Upon successful completion,
|
|
|
|
|
.Nm tcsetpgrp
|
|
|
|
|
returns a value of zero.
|
|
|
|
|
.Sh ERRORS
|
|
|
|
|
If an error occurs,
|
|
|
|
|
.Nm tcgetpgrp
|
|
|
|
|
returns -1 and the global variable
|
|
|
|
|
.Va errno
|
|
|
|
|
is set to indicate the error, as follows:
|
|
|
|
|
.Bl -tag -width Er
|
|
|
|
|
.It Bq Er EBADF
|
|
|
|
|
The
|
|
|
|
|
.Fa fd
|
|
|
|
|
argument is not a valid file descriptor.
|
|
|
|
|
.It Bq Er EINVAL
|
|
|
|
|
An invalid value of
|
|
|
|
|
.Fa pgrp_id
|
|
|
|
|
was specified.
|
|
|
|
|
.It Bq Er ENOTTY
|
|
|
|
|
The calling process does not have a controlling terminal, or the file
|
|
|
|
|
represented by
|
|
|
|
|
.Fa fd
|
|
|
|
|
is not the controlling terminal, or the controlling terminal is no
|
|
|
|
|
longer associated with the session of the calling process.
|
|
|
|
|
.It Bq Er EPERM
|
|
|
|
|
The
|
|
|
|
|
.Fa pgrp_id
|
|
|
|
|
argument does not match the process group ID of a process in the same
|
|
|
|
|
session as the calling process.
|
|
|
|
|
.El
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr setpgid 3 ,
|
|
|
|
|
.Xr setsid 2 ,
|
|
|
|
|
.Xr tcgetpgrp 3
|
|
|
|
|
.Sh STANDARDS
|
|
|
|
|
The
|
|
|
|
|
.Nm tcsetpgprp
|
|
|
|
|
function is expected to be compliant with the
|
|
|
|
|
.St -p1003.1-88
|
|
|
|
|
specification.
|
