96 lines
3.3 KiB
Groff
96 lines
3.3 KiB
Groff
|
.\" 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.
|
||
|
|
.\"
|
||
|
|
.\" @(#)killpg.2 8.1 (Berkeley) 6/2/93
|
||
|
|
.\"
|
||
|
|
.Dd June 2, 1993
|
||
|
|
.Dt KILLPG 2
|
||
|
|
.Os BSD 4
|
||
|
|
.Sh NAME
|
||
|
|
.Nm killpg
|
||
|
|
.Nd send signal to a process group
|
||
|
|
.Sh SYNOPSIS
|
||
|
|
.Fd #include <signal.h>
|
||
|
|
.Ft int
|
||
|
|
.Fn killpg "pid_t pgrp" "int sig"
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
.Fn Killpg
|
||
|
|
sends the signal
|
||
|
|
.Fa sig
|
||
|
|
to the process group
|
||
|
|
.Fa pgrp .
|
||
|
|
See
|
||
|
|
.Xr sigaction 2
|
||
|
|
for a list of signals.
|
||
|
|
If
|
||
|
|
.Fa pgrp
|
||
|
|
is 0,
|
||
|
|
.Fn killpg
|
||
|
|
sends the signal to the sending process's process group.
|
||
|
|
.Pp
|
||
|
|
The sending process and members of the process group must
|
||
|
|
have the same effective user ID, or
|
||
|
|
the sender must be the super-user.
|
||
|
|
As a single special case the continue signal SIGCONT may be sent
|
||
|
|
to any process that is a descendant of the current process.
|
||
|
|
.Sh RETURN VALUES
|
||
|
|
Upon successful completion, a value of 0 is returned. Otherwise,
|
||
|
|
a value of -1 is returned and the global variable
|
||
|
|
.Va errno
|
||
|
|
is set to indicate the error.
|
||
|
|
.Sh ERRORS
|
||
|
|
.Fn Killpg
|
||
|
|
will fail and no signal will be sent if:
|
||
|
|
.Bl -tag -width Er
|
||
|
|
.It Bq Er EINVAL
|
||
|
|
.Fa Sig
|
||
|
|
is not a valid signal number.
|
||
|
|
.It Bq Er ESRCH
|
||
|
|
No process can be found in the process group specified by
|
||
|
|
.Fa pgrp .
|
||
|
|
.It Bq Er ESRCH
|
||
|
|
The process group was given as 0
|
||
|
|
but the sending process does not have a process group.
|
||
|
|
.It Bq Er EPERM
|
||
|
|
The sending process is not the super-user and one or more
|
||
|
|
of the target processes has an effective user ID different from that
|
||
|
|
of the sending process.
|
||
|
|
.El
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr kill 2 ,
|
||
|
|
.Xr getpgrp 2 ,
|
||
|
|
.Xr sigaction 2
|
||
|
|
.Sh HISTORY
|
||
|
|
The
|
||
|
|
.Nm
|
||
|
|
function call appeared in
|
||
|
|
.Bx 4.0 .
|