1*8289fd98SSascha Wildner.\" Copyright (c) 1980, 1991, 1993 2*8289fd98SSascha Wildner.\" The Regents of the University of California. All rights reserved. 3*8289fd98SSascha Wildner.\" 4*8289fd98SSascha Wildner.\" Redistribution and use in source and binary forms, with or without 5*8289fd98SSascha Wildner.\" modification, are permitted provided that the following conditions 6*8289fd98SSascha Wildner.\" are met: 7*8289fd98SSascha Wildner.\" 1. Redistributions of source code must retain the above copyright 8*8289fd98SSascha Wildner.\" notice, this list of conditions and the following disclaimer. 9*8289fd98SSascha Wildner.\" 2. Redistributions in binary form must reproduce the above copyright 10*8289fd98SSascha Wildner.\" notice, this list of conditions and the following disclaimer in the 11*8289fd98SSascha Wildner.\" documentation and/or other materials provided with the distribution. 12*8289fd98SSascha Wildner.\" 3. Neither the name of the University nor the names of its contributors 13*8289fd98SSascha Wildner.\" may be used to endorse or promote products derived from this software 14*8289fd98SSascha Wildner.\" without specific prior written permission. 15*8289fd98SSascha Wildner.\" 16*8289fd98SSascha Wildner.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17*8289fd98SSascha Wildner.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18*8289fd98SSascha Wildner.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19*8289fd98SSascha Wildner.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20*8289fd98SSascha Wildner.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21*8289fd98SSascha Wildner.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22*8289fd98SSascha Wildner.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23*8289fd98SSascha Wildner.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24*8289fd98SSascha Wildner.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25*8289fd98SSascha Wildner.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26*8289fd98SSascha Wildner.\" SUCH DAMAGE. 27*8289fd98SSascha Wildner.\" 28*8289fd98SSascha Wildner.\" @(#)killpg.2 8.1 (Berkeley) 6/2/93 29*8289fd98SSascha Wildner.\" $FreeBSD: src/lib/libc/compat-43/killpg.2,v 1.6.2.4 2003/03/15 15:11:05 trhodes Exp $ 30*8289fd98SSascha Wildner.\" 31*8289fd98SSascha Wildner.Dd November 26, 2016 32*8289fd98SSascha Wildner.Dt KILLPG 3 33*8289fd98SSascha Wildner.Os 34*8289fd98SSascha Wildner.Sh NAME 35*8289fd98SSascha Wildner.Nm killpg 36*8289fd98SSascha Wildner.Nd send signal to a process group 37*8289fd98SSascha Wildner.Sh LIBRARY 38*8289fd98SSascha Wildner.Lb libc 39*8289fd98SSascha Wildner.Sh SYNOPSIS 40*8289fd98SSascha Wildner.In sys/types.h 41*8289fd98SSascha Wildner.In signal.h 42*8289fd98SSascha Wildner.Ft int 43*8289fd98SSascha Wildner.Fn killpg "pid_t pgrp" "int sig" 44*8289fd98SSascha Wildner.Sh DESCRIPTION 45*8289fd98SSascha WildnerThe 46*8289fd98SSascha Wildner.Fn killpg 47*8289fd98SSascha Wildnerfunction 48*8289fd98SSascha Wildnersends the signal 49*8289fd98SSascha Wildner.Fa sig 50*8289fd98SSascha Wildnerto the process group 51*8289fd98SSascha Wildner.Fa pgrp . 52*8289fd98SSascha WildnerSee 53*8289fd98SSascha Wildner.Xr sigaction 2 54*8289fd98SSascha Wildnerfor a list of signals. 55*8289fd98SSascha WildnerIf 56*8289fd98SSascha Wildner.Fa pgrp 57*8289fd98SSascha Wildneris 0, 58*8289fd98SSascha Wildner.Fn killpg 59*8289fd98SSascha Wildnersends the signal to the sending process's process group. 60*8289fd98SSascha Wildner.Pp 61*8289fd98SSascha WildnerThe sending process and members of the process group must 62*8289fd98SSascha Wildnerhave the same effective user ID, or 63*8289fd98SSascha Wildnerthe sender must be the super-user. 64*8289fd98SSascha WildnerAs a single special case the continue signal 65*8289fd98SSascha Wildner.Dv SIGCONT 66*8289fd98SSascha Wildnermay be sent 67*8289fd98SSascha Wildnerto any process that is a descendant of the current process. 68*8289fd98SSascha Wildner.Sh RETURN VALUES 69*8289fd98SSascha Wildner.Rv -std killpg 70*8289fd98SSascha Wildner.Sh ERRORS 71*8289fd98SSascha WildnerThe 72*8289fd98SSascha Wildner.Fn killpg 73*8289fd98SSascha Wildnerfunction 74*8289fd98SSascha Wildnerwill fail and no signal will be sent if: 75*8289fd98SSascha Wildner.Bl -tag -width Er 76*8289fd98SSascha Wildner.It Bq Er EINVAL 77*8289fd98SSascha WildnerThe 78*8289fd98SSascha Wildner.Fa sig 79*8289fd98SSascha Wildnerargument 80*8289fd98SSascha Wildneris not a valid signal number. 81*8289fd98SSascha Wildner.It Bq Er ESRCH 82*8289fd98SSascha WildnerNo process can be found in the process group specified by 83*8289fd98SSascha Wildner.Fa pgrp . 84*8289fd98SSascha Wildner.It Bq Er ESRCH 85*8289fd98SSascha WildnerThe process group was given as 0 86*8289fd98SSascha Wildnerbut the sending process does not have a process group. 87*8289fd98SSascha Wildner.It Bq Er EPERM 88*8289fd98SSascha WildnerThe sending process is not the super-user and one or more 89*8289fd98SSascha Wildnerof the target processes has an effective user ID different from that 90*8289fd98SSascha Wildnerof the sending process. 91*8289fd98SSascha Wildner.El 92*8289fd98SSascha Wildner.Sh SEE ALSO 93*8289fd98SSascha Wildner.Xr getpgrp 2 , 94*8289fd98SSascha Wildner.Xr kill 2 , 95*8289fd98SSascha Wildner.Xr sigaction 2 96*8289fd98SSascha Wildner.Sh HISTORY 97*8289fd98SSascha WildnerThe 98*8289fd98SSascha Wildner.Fn killpg 99*8289fd98SSascha Wildnerfunction appeared in 100*8289fd98SSascha Wildner.Bx 4.0 . 101