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.\" 34.Dd "June 4, 1993" 35.Dt TCSETPGRP 3 36.Os 37.Sh NAME 38.Nm tcsetpgrp 39.Nd set foreground process group ID 40.Sh SYNOPSIS 41.Fd #include <sys/types.h> 42.Fd #include <unistd.h> 43.Ft int 44.Fn tcsetpgrp "int fd" "pid_t pgrp_id" 45.Sh DESCRIPTION 46If the process has a controlling terminal, the 47.Nm tcsetpgrp 48function sets the foreground process group ID associated with the 49terminal device to 50.Fa pgrp_id . 51The terminal device associated with 52.Fa fd 53must be the controlling terminal of the calling process and the 54controlling terminal must be currently associated with the session 55of the calling process. 56The value of 57.Fa pgrp_id 58must be the same as the process group ID of a process in the same 59session as the calling process. 60.Pp 61Upon successful completion, 62.Nm tcsetpgrp 63returns a value of zero. 64.Sh ERRORS 65If an error occurs, 66.Nm tcgetpgrp 67returns -1 and the global variable 68.Va errno 69is set to indicate the error, as follows: 70.Bl -tag -width Er 71.It Bq Er EBADF 72The 73.Fa fd 74argument is not a valid file descriptor. 75.It Bq Er EINVAL 76An invalid value of 77.Fa pgrp_id 78was specified. 79.It Bq Er ENOTTY 80The calling process does not have a controlling terminal, or the file 81represented by 82.Fa fd 83is not the controlling terminal, or the controlling terminal is no 84longer associated with the session of the calling process. 85.It Bq Er EPERM 86The 87.Fa pgrp_id 88argument does not match the process group ID of a process in the same 89session as the calling process. 90.El 91.Sh SEE ALSO 92.Xr setpgid 3 , 93.Xr setsid 2 , 94.Xr tcgetpgrp 3 95.Sh STANDARDS 96The 97.Nm tcsetpgprp 98function is expected to be compliant with the 99.St -p1003.1-88 100specification. 101