KILLPG (3)
send signal to all members of a process group.
SYNOPSIS
#include <signal.h>
int killpg(pid_t pidgrp , int signal );
DESCRIPTION
The
killpg()
function causes signal
signal
to be sent to all the processes in the process group
pidgrp
or to the processes' own process group if
pidgrp
is equal to zero.
It is equivalent to
kill(- pidgrp , signal );
RETURN VALUE
The value returned is -1 on error, or 0 for success.
ERRORS
Errors are returned in
errno
and can be one of the following:
EINVAL
ESRCH
for a process group which does not exist, and
EPERM
if the userid of the calling process is not equal to that of the
process the signal is sent to, and the userid is not that of the
superuser.
CONFORMING TO
SEE ALSO
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