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#!/sbin/runscript
# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
description="Run udevd and create the device-nodes"
[ -e /etc/udev/udev.conf ] && . /etc/udev/udev.conf
rc_coldplug=${rc_coldplug:-${RC_COLDPLUG:-YES}}
depend()
{
if [ -f /etc/init.d/sysfs ]; then
# require new enough openrc with sysinit being extra runlevel
# on linux we just check if sysfs init-script exists
# this is to silence out ugly warnings about not-existing sysfs script
provide dev
if yesno "${rc_device_tarball:-no}"; then
need sysfs udev-mount udev-dev-tarball
else
need sysfs udev-mount
fi
before checkfs fsck
# udev does not work inside vservers
keyword novserver
fi
}
cleanup()
{
# fail more gracely and not leave udevd running
start-stop-daemon --stop --exec /sbin/udevd
exit 1
}
disable_hotplug_agent()
{
if [ -e /proc/sys/kernel/hotplug ]; then
echo "" >/proc/sys/kernel/hotplug
fi
}
root_link()
{
/lib/udev/write_root_link_rule
}
rules_disable_switch()
{
# this function disables rules files
# by creating new files with the same name
# in a temp rules directory with higher priority
local d=/dev/.udev/rules.d bname="$1" onoff="$2"
if yesno "${onoff}"; then
mkdir -p "$d"
echo "# This file disables ${bname} due to /etc/conf.d/udev" \
> "${d}/${bname}"
else
rm -f "${d}/${bname}"
fi
}
start_udevd()
{
# load unix domain sockets if built as module, Bug #221253
if [ -e /proc/modules ] ; then
modprobe -q unix 2>/dev/null
fi
ebegin "Starting udevd"
start-stop-daemon --start --exec /sbin/udevd -- --daemon
eend $?
}
# populate /dev with devices already found by the kernel
populate_dev()
{
if get_bootparam "nocoldplug" ; then
rc_coldplug="NO"
ewarn "Skipping udev coldplug as requested in kernel cmdline"
fi
ebegin "Populating /dev with existing devices through uevents"
if yesno "${rc_coldplug}"; then
udevadm trigger
else
# Do not run any init-scripts, Bug #206518
udevadm control --env do_not_run_plug_service=1
# only create device nodes
udevadm trigger --attr-match=dev
# run persistent-net stuff, bug 191466
udevadm trigger --subsystem-match=net
fi
eend $?
ebegin "Waiting for uevents to be processed"
udevadm settle --timeout=${udev_settle_timeout:-60}
eend $?
udevadm control --env do_not_run_plug_service=
return 0
}
# for debugging
start_udevmonitor()
{
yesno "${udev_monitor:-no}" || return 0
udevmonitor_log=/dev/.udev/udevmonitor.log
udevmonitor_pid=/dev/.udev/udevmonitor.pid
einfo "udev: Running udevadm monitor ${udev_monitor_opts} to get a log of all events"
start-stop-daemon --start --stdout "${udevmonitor_log}" \
--make-pidfile --pidfile "${udevmonitor_pid}" \
--background --exec /sbin/udevadm -- monitor ${udev_monitor_opts}
}
stop_udevmonitor()
{
yesno "${udev_monitor:-no}" || return 0
if yesno "${udev_monitor_keep_running:-no}"; then
ewarn "udev: udevmonitor is still running and writing into ${udevmonitor_log}"
else
einfo "udev: Stopping udevmonitor: Log is in ${udevmonitor_log}"
start-stop-daemon --stop --pidfile "${udevmonitor_pid}" --exec /sbin/udevadm
fi
}
display_hotplugged_services() {
local svcfile= svc= services=
for svcfile in "${RC_SVCDIR}"/hotplugged/*; do
svc="${svcfile##*/}"
[ -x "${svcfile}" ] || continue
# do not display this - better: do only inject it later :)
[ "$svc" = "udev-postmount" ] && continue
services="${services} ${svc}"
done
[ -n "${services}" ] && einfo "Device initiated services:${HILITE}${services}${NORMAL}"
}
inject_postmount_initd() {
if ! mark_service_hotplugged udev-postmount; then
IN_HOTPLUG=1 /etc/init.d/udev-postmount start >/dev/null 2>&1
fi
#einfo "Injected udev-postmount service"
}
check_persistent_net()
{
# check if there are problems with persistent-net
local syspath= devs= problem=false
for syspath in /sys/class/net/*_rename*; do
if [ -d "${syspath}" ]; then
devs="${devs} ${syspath##*/}"
problem=true
fi
done
${problem} || return 0
eerror "UDEV: Your system has a problem assigning persistent names"
eerror "to these network interfaces: ${devs}"
einfo "Checking persistent-net rules:"
# the sed-expression lists all duplicate lines
# from the input, like "uniq -d" does, but uniq
# is installed into /usr/bin and not available at boot.
dups=$(
RULES_FILE='/etc/udev/rules.d/70-persistent-net.rules'
. /lib/udev/rule_generator.functions
find_all_rules 'NAME=' '.*' | \
tr ' ' '\n' | \
sort | \
sed '$!N; s/^\(.*\)\n\1$/\1/; t; D'
)
if [ -n "${dups}" ]; then
ewarn "The rules create multiple entries assigning these names:"
eindent
ewarn "${dups}"
eoutdent
else
ewarn "Found no duplicate names in persistent-net rules,"
ewarn "there must be some other problem!"
fi
return 1
}
check_udev_works()
{
# should exist on every system, else udev failed
if [ ! -e /dev/zero ]; then
eerror "Assuming udev failed somewhere, as /dev/zero does not exist."
return 1
fi
return 0
}
start()
{
# do not run this on old baselayout where udev-addon gets loaded
if [ ! -f /etc/init.d/sysfs ]; then
eerror "The $SVCNAME init-script is written for baselayout-2!"
eerror "Please do not use it with baselayout-1!".
return 1
fi
_start
display_hotplugged_services
inject_postmount_initd
}
_start()
{
root_link
rules_disable_switch 75-persistent-net-generator.rules "${persistent_net_disable:-no}"
rules_disable_switch 75-cd-aliases-generator.rules ${persistent_cd_disable:-no}
disable_hotplug_agent
start_udevd || cleanup
start_udevmonitor
populate_dev || cleanup
check_persistent_net
check_udev_works || cleanup
stop_udevmonitor
return 0
}
stop() {
ebegin "Stopping udevd"
start-stop-daemon --stop --exec /sbin/udevd
eend $?
}
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