#!/sbin/runscript
# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

description="Read files in advance during boot"

: ${ureadahead_binary:=/sbin/ureadahead}
: ${tracing_timeout:=60}

depend() {
	if can_start_early ; then
		# when tracing, debugfs is used
		need sysfs
		before '*'
	else
		need localmount
		# this should start as early as possible
		# we can't do 'before *' as that breaks it
		before bootmisc consolefont keymaps rmnologin serial urandom
	fi
}

can_start_early() {
	# short test to see if we have the right partitions mounted
	[ -e ${ureadahead_binary} ] && [ -e /var/lib/ureadahead ]
}

start() {
	local myopts="--timeout=${tracing_timeout}"

	if get_bootparam "force-tracing" ; then
		ewarn "Force boot tracing as requested in kernel cmdline"
		myopts="$myopts --force-trace"
	fi
	# ureadahead doesn't act like others daemons:
	# it must run in background only with SSD or when it traces the system.
	# On HDD il will run in foreground.
	# When tracing, it must be stopped a the end of the boot,
	# either by passing --timeout or by sending INT or TERM signal.
	# So it is not OK to launch it with start-stop-deamon since it
	# termination will be interpreted as a crash.
	ebegin "Starting ${SVCNAME}"
	${ureadahead_binary} --quiet --daemon ${myopts}
	eend $?
}