105 lines
3.6 KiB
Groff
105 lines
3.6 KiB
Groff
.\" $NetBSD: setpgid.2,v 1.10 1997/07/14 23:20:13 kleink Exp $
|
|
.\"
|
|
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" 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.
|
|
.\"
|
|
.\" @(#)setpgid.2 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.Dd June 4, 1993
|
|
.Dt SETPGID 2
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm setpgid ,
|
|
.Nm setpgrp
|
|
.Nd set process group
|
|
.Sh SYNOPSIS
|
|
.Fd #include <unistd.h>
|
|
.Ft int
|
|
.Fn setpgid "pid_t pid" "pid_t pgrp"
|
|
.Ft int
|
|
.Fn setpgrp "pid_t pid" "pid_t pgrp"
|
|
.Sh DESCRIPTION
|
|
.Fn Setpgid
|
|
sets the process group of the specified process
|
|
.Ar pid
|
|
to the specified
|
|
.Ar pgrp .
|
|
If
|
|
.Ar pid
|
|
is zero, then the call applies to the current process.
|
|
.Pp
|
|
If the invoker is not the super-user, then the affected process
|
|
must have the same effective user-id as the invoker or be a descendant
|
|
of the invoking process.
|
|
.Sh RETURN VALUES
|
|
.Fn Setpgid
|
|
returns 0 when the operation was successful.
|
|
If the request failed, -1 is returned and the global variable
|
|
.Va errno
|
|
indicates the reason.
|
|
.Sh ERRORS
|
|
.Fn Setpgid
|
|
will fail and the process group will not be altered if:
|
|
.Bl -tag -width Er
|
|
.It Bq Er EACCESS
|
|
The value of the
|
|
.Fa pid
|
|
argument matches the process ID of a child process of the calling process,
|
|
and the child process has successfully executed one of the exec functions.
|
|
.It Bq Er EINVAL
|
|
The value of the
|
|
.Fa pgrp
|
|
argument is less than zero.
|
|
.It Bq Er EPERM
|
|
The effective user ID of the requested process is different
|
|
from that of the caller and the process is not a descendant
|
|
of the calling process.
|
|
.It Bq Er ESRCH
|
|
The value of the
|
|
.Fa pid
|
|
argument does not match the process ID of the calling process or of a
|
|
child process of the calling process.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr getpgrp 2
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn setpgid
|
|
function conforms to
|
|
.St -p1003.1-90 .
|
|
.Sh COMPATIBILITY
|
|
.Fn Setpgrp
|
|
is identical to
|
|
.Fn setpgid ,
|
|
and is retained for calling convention compatibility with historical
|
|
versions of
|
|
.Bx .
|