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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)tcsetpgrp.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD$ 34.\" 35.Dd June 4, 1993 36.Dt TCSETPGRP 3 37.Os 38.Sh NAME 39.Nm tcsetpgrp 40.Nd set foreground process group ID 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/types.h 45.In unistd.h 46.Ft int 47.Fn tcsetpgrp "int fd" "pid_t pgrp_id" 48.Sh DESCRIPTION 49If the process has a controlling terminal, the 50.Fn tcsetpgrp 51function sets the foreground process group ID associated with the 52terminal device to 53.Fa pgrp_id . 54The terminal device associated with 55.Fa fd 56must be the controlling terminal of the calling process and the 57controlling terminal must be currently associated with the session 58of the calling process. 59The value of 60.Fa pgrp_id 61must be the same as the process group ID of a process in the same 62session as the calling process. 63.Sh RETURN VALUES 64.Rv -std tcsetpgrp 65.Sh ERRORS 66The 67.Fn tcsetpgrp 68function will fail if: 69.Bl -tag -width Er 70.It Bq Er EBADF 71The 72.Fa fd 73argument is not a valid file descriptor. 74.It Bq Er EINVAL 75An invalid value of 76.Fa pgrp_id 77was specified. 78.It Bq Er ENOTTY 79The calling process does not have a controlling terminal, or the file 80represented by 81.Fa fd 82is not the controlling terminal, or the controlling terminal is no 83longer associated with the session of the calling process. 84.It Bq Er EPERM 85The 86.Fa pgrp_id 87argument does not match the process group ID of a process in the same 88session as the calling process. 89.El 90.Sh SEE ALSO 91.Xr setpgid 2 , 92.Xr setsid 2 , 93.Xr tcgetpgrp 3 94.Sh STANDARDS 95The 96.Fn tcsetpgrp 97function is expected to be compliant with the 98.St -p1003.1-88 99specification. 100