#!/bin/rc
# dontkill regexp - mark invoker's processes with names matching regexp
#	as not killable when the kernel runs out of memory
if (! ~ $#* 1) {
	echo $0 regexp >[1=2]
	exit usage
}
# see /sys/src/9/port/proc.c:/^killbig
rfork e
procs=`{psu | awk '$NF ~ /'$1'/ {print $2}'}
if (! ~ $#procs 0)
	exec chmod -w /proc/^$procs^/ctl >[2]/dev/null