KILLPG
NAME SYNOPSIS DESCRIPTION RETURN VALUE ERRORS CONFORMING TO SEE ALSO
killpg - send signal to all members of a process group.
#include pidgrp, int signal);
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);
The value returned is -1 on error, or 0 for success.
Errors are returned in errno and can be one of the following:
EINVAL
for an invalid signal,
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.
???
kill(2), signal(2), signal(7)
