The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/gen/tcsetpgrp.3

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    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 .\" 4. 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: stable/8/lib/libc/gen/tcsetpgrp.3 165903 2007-01-09 00:28:16Z imp $
   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
   45 If the process has a controlling terminal, the
   46 .Fn tcsetpgrp
   47 function sets the foreground process group ID associated with the
   48 terminal device to
   49 .Fa pgrp_id .
   50 The terminal device associated with
   51 .Fa fd
   52 must be the controlling terminal of the calling process and the
   53 controlling terminal must be currently associated with the session
   54 of the calling process.
   55 The value of
   56 .Fa pgrp_id
   57 must be the same as the process group ID of a process in the same
   58 session as the calling process.
   59 .Sh RETURN VALUES
   60 .Rv -std tcsetpgrp
   61 .Sh ERRORS
   62 The
   63 .Fn tcsetpgrp
   64 function will fail if:
   65 .Bl -tag -width Er
   66 .It Bq Er EBADF
   67 The
   68 .Fa fd
   69 argument is not a valid file descriptor.
   70 .It Bq Er EINVAL
   71 An invalid value of
   72 .Fa pgrp_id
   73 was specified.
   74 .It Bq Er ENOTTY
   75 The calling process does not have a controlling terminal, or the file
   76 represented by
   77 .Fa fd
   78 is not the controlling terminal, or the controlling terminal is no
   79 longer associated with the session of the calling process.
   80 .It Bq Er EPERM
   81 The
   82 .Fa pgrp_id
   83 argument does not match the process group ID of a process in the same
   84 session 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
   91 The
   92 .Fn tcsetpgrp
   93 function is expected to be compliant with the
   94 .St -p1003.1-88
   95 specification.

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