/etc/rc

1 개요

/etc/rc

• runlevel change
• 런레벨이 바뀔 때 서비스를 시작/중지함

2 내용

[root@jmnote ~]# cat /etc/rc
#! /bin/bash
#
# rc            This file is responsible for starting/stopping
#               services when the runlevel changes.
#
# Original Author:       
#               Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
#

set -m

# check a file to be a correct runlevel script
check_runlevel ()
{
	# Check if the file exists at all.
	[ -x "$1" ] || return 1
	is_ignored_file "$1" && return 1
	return 0
}

# Now find out what the current and what the previous runlevel are.
argv1="$1"
set $(/sbin/runlevel)
runlevel=$2
previous=$1
export runlevel previous

. /etc/init.d/functions

export CONSOLETYPE
do_confirm="no"
if [ -f /var/run/confirm ]; then
	do_confirm="yes"
fi
UPSTART=
[ -x /sbin/initctl ] && UPSTART=yes
# See if we want to be in user confirmation mode
if [ "$previous" = "N" ]; then
	if [ "$do_confirm" = "yes" ]; then
		echo $"Entering interactive startup"
	else
		echo $"Entering non-interactive startup"
	fi
fi

# Get first argument. Set new runlevel to this argument.
[ -n "$argv1" ] && runlevel="$argv1"

# Is there an rc directory for this new runlevel?
[ -d /etc/rc$runlevel.d ] || exit 0

# Set language, vc settings once to avoid doing it for every init script
# through functions
if [ -f /etc/sysconfig/i18n -a -z "${NOLOCALE:-}" ] ; then
  . /etc/profile.d/lang.sh 2>/dev/null
  export LANGSH_SOURCED=1
fi

# First, run the KILL scripts.
for i in /etc/rc$runlevel.d/K* ; do

	# Check if the subsystem is already up.
	subsys=${i#/etc/rc$runlevel.d/K??}
	[ -f /var/lock/subsys/$subsys -o -f /var/lock/subsys/$subsys.init ] || continue
	check_runlevel "$i" || continue

	# Bring the subsystem down.
	[ -n "$UPSTART" ] && initctl emit --quiet stopping JOB=$subsys
	$i stop
	[ -n "$UPSTART" ] && initctl emit --quiet stopped JOB=$subsys
done

# Now run the START scripts.
for i in /etc/rc$runlevel.d/S* ; do

	# Check if the subsystem is already up.
	subsys=${i#/etc/rc$runlevel.d/S??}
	[ -f /var/lock/subsys/$subsys ] && continue
	[ -f /var/lock/subsys/$subsys.init ] && continue
	check_runlevel "$i" || continue
		    
	# If we're in confirmation mode, get user confirmation
	if [ "$do_confirm" = "yes" ]; then
		confirm $subsys
		rc=$?
		if [ "$rc" = "1" ]; then
			continue
		elif [ "$rc" = "2" ]; then
			do_confirm="no"
		fi
	fi

	update_boot_stage "$subsys"
	# Bring the subsystem up.
	[ -n "$UPSTART" ] && initctl emit --quiet starting JOB=$subsys
	if [ "$subsys" = "halt" -o "$subsys" = "reboot" ]; then
		export LC_ALL=C
		exec $i start
	fi
	$i start
	[ -n "$UPSTART" ] && initctl emit --quiet started JOB=$subsys
done
[ "$do_confirm" = "yes" ] && rm -f /var/run/confirm
exit 0

3 같이 보기

• /sbin/runlevel