#! /sbin/runscript
#RCUPDATE:34:77:This line is required for script management

# Copyright 2000, International Business Machines Corporation and others.
# All Rights Reserved.
# 
# This software has been released under the terms of the IBM Public
# License.  For details, see the LICENSE file in the top-level source
# directory or online at http://www.openafs.org/dl/license10.html

# AFS	Start and stop AFS components
# 
# 
# chkconfig: 345 60 20
# description:  AFS is a distributed file system which provides location
#		transparency, caching and secure authentication.
#		Additional configuration can be done in the /etc/sysconfig/afs
#		file. Read the documentation in that file for more information.
#
# Note that AFS does not use a pid file in /var/run. It is turned off by
# unmounting /afs.
#
# Modified by Holger Brueckner <darks@fet.org> for gentoo-linux 

# Gather up options and post startup script name, if present
if [ -f /etc/afs/afs.conf ]; then
	. /etc/afs/afs.conf
fi


# dependecies
depend() {
    need net
}

# check for ext2 partition

check_ext2() {
  PART=`cat /proc/mounts | grep vice | grep ext2 | awk '{print $1}'`
  if [ -z $PART ]
  then
    echo ">>> PLEASE CREATE A EXT2 (no reiserfs) PARTITION (of aprox. 200M)"
    echo ">>> AND MOUNT IT TO /USR/VICE/CACHE !!!"
    return 1
  fi
}

# check if cacheinfo exist, otherwise create it !!

check_cacheinfo(){
 [ ! -f /usr/vice/etc/cacheinfo ] && {
    PART=`cat /proc/mounts | grep vice | grep ext2 | awk '{print $1}'`
    CACHESIZE=`df $PART | grep ^/ | awk '{print $4}'`
    CACHESIZE=`expr $CACHESIZE \* 9`
    CACHESIZE=`expr $CACHESIZE / 10`
    echo "/afs:/usr/vice/cache:$CACHESIZE" > /usr/vice/etc/cacheinfo     
 }
}

# is_on returns 1 if value of arg is "on"
is_on() {
	if  test "$1" = "on" ; then return 0
	else return 1
	fi
}

# If choose_client can't correctly determine which client to use, set
# LIBAFS manually.
choose_client() {

	# Use the second field of the uname -v output instead of just
	# doing a match on the whole thing to protect against matching
	# a timezone named SMP -- I don't know of one, but let's be
	# paranoid.

	set X `uname -v`; shift
	case $2 in
	SMP) MP=.mp ;;	# MP system
	*)   MP= ;;	# SP system
	esac

	# For now, just use uname -r to get the module version. 
	VERSION=`uname -r`

	LIBAFS=libafs-$VERSION$MP.o
}

#
# Find prefix symbol to use with insmod.  We find the unregister_filesystem
# string from /proc/ksyms since we know it's there.  If /proc/ksyms does not
# exist, we print that info to the console and use the uname -v output to
# decide on a prefix.
# unregister_filesystem_Rsmp_b240cad8 is a typcial SMP version string from
# a kernel built from ftp.kernel.org
#

KSYMS_FILE=/proc/ksyms
SEARCH_STR="unregister_filesystem"
DEFAULT_SMP_PREFIX="smp_" # Redhat kernels need "smp" instead
PREFIX="" # none needed for UP with <= 1Gig memory

set_prefix()
{
	h='[0-9a-fA-F]'
	h8="$h$h$h$h$h$h$h$h"
	prefix_set=0

	set X `fgrep $SEARCH_STR $KSYMS_FILE 2> /dev/null`; shift
	str=$2
	case $str in
	${SEARCH_STR}_R$h8)
		# No prefix required
		;;
	$SEARCH_STR)
		# No versioning in kernel symbols
		;;
	${SEARCH_STR}_R*$h8)
		suffix=${str#${SEARCH_STR}_R}
		PREFIX=${suffix%$h8}
		;;
	*)
		case $str in
		'')
			echo afsd: Cannot find \"$SEARCH_STR\" in file $KSYMS_FILE
			;;
		*)
			echo afsd: Malformed kernel version symbol \"$str\"
			;;
		esac

		echo Guessing prefix from output of uname -v
		set X `uname -v`; shift
		case $2 in
		SMP)
			PREFIX=$DEFAULT_SMP_PREFIX
			;;
		esac
		;;
	esac
}


MODLOADDIR=/usr/vice/etc/modload
# load_client loads the AFS client module if it's not already loaded. 
load_client() {
	# If LIBAFS is set, use it.
	if [ -z "$LIBAFS" ] ; then
		# Try to determine the right client.
		choose_client
	fi
    
	if [ ! -f $MODLOADDIR/$LIBAFS ] ; then
		echo AFS module $MODLOADDIR/$LIBAFS does not exist. Not starting AFS.
		return 1
	fi

	# use the prefix command if required
	set_prefix
	/sbin/insmod ${PREFIX:+-P $PREFIX} -f -m $MODLOADDIR/$LIBAFS > $MODLOADDIR/libafs.map 2>&1
}

start(){
	# Load kernel extensions
	
	if check_ext2 ; then :
	else
		eend 1 "Error: No ext2 partition for afs cache"
	fi
	check_cacheinfo

	ebegin "Starting AFS services"
	
	if  load_client  ; then :
	else
		echo Failed to load AFS client, not starting AFS services.
		eend "Error Starting AFS client"
	fi

	# Start bosserver, it if exists
	if  is_on $AFS_SERVER && test -x /usr/afs/bin/bosserver  ; then
		/usr/afs/bin/bosserver 
	fi

	# Start AFS client
	if  is_on $AFS_CLIENT && test -x /usr/sbin/afsd  ; then
		/usr/sbin/afsd ${OPTIONS} 1>&2
                STATUS=$? 
		# Start AFS version of inetd.conf if present.
		#if  test -f /usr/afsws/etc/inetd.conf -a -x /usr/afsws/etc/inetd.afs ; then
		#	/usr/afsws/etc/inetd.afs /usr/afsws/etc/inetd.conf
		#fi
		$AFS_POST_INIT
	fi
	eend $STATUS "Error starting AFS"

}

stop() {
	# Stop AFS
	ebegin "Stopping AFS services"

	if  is_on $AFS_CLIENT  ; then
#		killall inetd.afs
		umount /afs
                STATUS=$? 
	fi

	if  is_on $AFS_SERVER && test -x /usr/afs/bin/bos ; then
		echo "Stopping AFS bosserver"
		/usr/afs/bin/bos shutdown localhost -localauth -wait
		killall -HUP bosserver
	fi

	LIBAFS=`/sbin/lsmod | fgrep libafs`
	if [ -n "$LIBAFS" ] ; then
		LIBAFS=`echo $LIBAFS | awk 'BEGIN { FS = " " } { print $1 }'`
		/sbin/rmmod $LIBAFS
                STATUS=$? 
	fi
       eend $STATUS "Error starting AFS"

}