freebsd-skq/etc/rc.d/dhclient
rea c797a8475b rc.d: document 'quiet' prefix and fix dhclient/devd interaction
Document the current semantics of the 'quiet' command prefix
in the rc.subr(8).

Fix dhclient rc.d script: it should not call err() for
non-DHCP-enabled interface when it is called from devd, because the
latter just blindly calls 'service dhclient quietstart' on each "link
up" event.

Since the 'quietstart' will silence the message "Cannot 'start' <foo>.
Set <foo>_enable to YES in /etc/rc.conf or use 'onestart' instead of
'start'." and running dhclient on the non-DHCP-enabled interface is
the same thing as running the service <foo> without <foo>_enable set,
such modification is in sync with the current semantics of the 'quiet'
prefix.

Approved by: glebius
Reviewed by: freebsd-rc list
MFC after:	2 weeks
2012-01-12 06:48:11 +00:00

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#!/bin/sh
#
# $FreeBSD$
#
# PROVIDE: dhclient
# KEYWORD: nojail nostart
. /etc/rc.subr
. /etc/network.subr
ifn="$2"
name="dhclient"
rcvar=
pidfile="/var/run/${name}.${ifn}.pid"
start_precmd="dhclient_prestart"
stop_precmd="dhclient_pre_check"
# rc_force check can only be done at the run_rc_command
# time, so we're testing it in the pre* hooks.
dhclient_pre_check()
{
if [ -z "${rc_force}" ] && ! dhcpif $ifn; then
local msg
msg="'$ifn' is not a DHCP-enabled interface"
if [ -z "${rc_quiet}" ]; then
err 1 "$msg"
else
debug "$msg"
exit 1
fi
fi
}
dhclient_prestart()
{
dhclient_pre_check
# Interface-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
rc_flags="${rc_flags} ${ifn}"
}
load_rc_config $name
load_rc_config network
if [ -z $ifn ] ; then
# only complain if a command was specified but no interface
if [ -n "$1" ] ; then
err 1 "$0: no interface specified"
fi
fi
run_rc_command "$1"