HardenedBSD/etc/rc.d/dhclient
Brooks Davis 688e303c19 Add very limited support for the isc-dhclient. It will almostly certaintly
only work if there's just one interface doing dhcp.  This version implements
the same logic as the version in the PR, but uses pgrep to be less verbose.

PR:		conf/95905
MFC after:	1 week
2008-04-15 23:03:35 +00:00

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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: dhclient
# KEYWORD: nojail nostart
. /etc/rc.subr
. /etc/network.subr
name="dhclient"
rcvar=
start_cmd="dhclient_start"
stop_cmd="dhclient_stop"
dhclient_start()
{
# prevent unnecessary restarts
# XXX: dhclient had better create a pidfile
if [ -x /bin/pgrep ]; then
pids=`/bin/pgrep -f "dhclient: $ifn(\$| .*)"`
if [ -n "$pids" ]; then
sleep 1
pids=`/bin/pgrep -f "dhclient: $ifn(\$| .*)"`
if [ -n "$pids" ]; then
exit 0
fi
elif [ -e /var/run/dhclient.pid ]; then
if [ -n "`pgrep -F /var/run/dhclient.pid`" ]; then
exit 0
fi
fi
fi
# Override for $ifn specific flags (see rc.subr for $flags setting)
specific=`get_if_var $ifn dhclient_flags_IF`
if [ -z "$flags" -a -n "$specific" ]; then
rc_flags=$specific
fi
background_dhclient=`get_if_var $ifn background_dhclient_IF $background_dhclient`
if checkyesno background_dhclient; then
rc_flags="${rc_flags} -b"
fi
${dhclient_program} ${rc_flags} $ifn
}
dhclient_stop()
{
ifconfig $ifn down # cause dhclient to die
}
ifn="$2"
load_rc_config $name
load_rc_config network
if ! dhcpif $ifn; then
return 1
fi
run_rc_command "$1"