1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)tcsetpgrp.3 8.1 (Berkeley) 6/4/93 29.\" $FreeBSD$ 30.\" 31.Dd June 4, 1993 32.Dt TCSETPGRP 3 33.Os 34.Sh NAME 35.Nm tcsetpgrp 36.Nd set foreground process group ID 37.Sh LIBRARY 38.Lb libc 39.Sh SYNOPSIS 40.In sys/types.h 41.In unistd.h 42.Ft int 43.Fn tcsetpgrp "int fd" "pid_t pgrp_id" 44.Sh DESCRIPTION 45If the process has a controlling terminal, the 46.Fn tcsetpgrp 47function sets the foreground process group ID associated with the 48terminal device to 49.Fa pgrp_id . 50The terminal device associated with 51.Fa fd 52must be the controlling terminal of the calling process and the 53controlling terminal must be currently associated with the session 54of the calling process. 55The value of 56.Fa pgrp_id 57must be the same as the process group ID of a process in the same 58session as the calling process. 59.Sh RETURN VALUES 60.Rv -std tcsetpgrp 61.Sh ERRORS 62The 63.Fn tcsetpgrp 64function will fail if: 65.Bl -tag -width Er 66.It Bq Er EBADF 67The 68.Fa fd 69argument is not a valid file descriptor. 70.It Bq Er EINVAL 71An invalid value of 72.Fa pgrp_id 73was specified. 74.It Bq Er ENOTTY 75The calling process does not have a controlling terminal, or the file 76represented by 77.Fa fd 78is not the controlling terminal, or the controlling terminal is no 79longer associated with the session of the calling process. 80.It Bq Er EPERM 81The 82.Fa pgrp_id 83argument does not match the process group ID of a process in the same 84session as the calling process. 85.El 86.Sh SEE ALSO 87.Xr setpgid 2 , 88.Xr setsid 2 , 89.Xr tcgetpgrp 3 90.Sh STANDARDS 91The 92.Fn tcsetpgrp 93function is expected to be compliant with the 94.St -p1003.1-88 95specification. 96