#!/bin/bash
#
# netfs         Mount network filesystems.
#
# Authors:	Bill Nottingham <notting@redhat.com>
# 		Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
#
# chkconfig: 345 25 75
# description: Mounts and unmounts all Network File System (NFS), \
#	       SMB (Lan Manager/Windows), and NCP (NetWare) mount points.

# Source networking configuration.
if [ ! -f /etc/sysconfig/network ]; then
    exit 0
fi

# Source function library.
. /etc/init.d/functions

. /etc/sysconfig/network

# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 0

NFSFSTAB=`grep -v '^#' /etc/fstab | awk '{ if ($3 ~ /^nfs$/ && $4 !~ /noauto/) print $2}'`
SMBFSTAB=`grep -v '^#' /etc/fstab | awk '{ if ($3 ~ /^smbfs$/ && $4 !~ /noauto/) print $2}'`
NCPFSTAB=`grep -v '^#' /etc/fstab | awk '{ if ($3 ~ /^ncpfs$/ && $4 !~ /noauto/) print $2}'`
NETDEVMTAB=`grep -v '^#' /proc/mounts | awk '{ if (($4 ~ /_netdev$/) && ($2 != "/")) print $2}'`
NFSMTAB=`grep -v '^#' /proc/mounts | awk '{ if (($3 ~ /nfs$/) && ($2 != "/")) print $2}'`
SMBMTAB=`grep -v '^#' /proc/mounts | awk '{ if ($3 ~ /^smbfs$/ ) print $2}'`
NCPMTAB=`grep -v '^#' /proc/mounts | awk '{ if ($3 ~ /^ncpfs$/ ) print $2}'`

# See how we were called.
case "$1" in
  start)
        [ -n "$NFSFSTAB" ] && 
	  {
	    [ ! -f /var/lock/subsys/portmap ] && service portmap start
	    action $"Mounting NFS filesystems: " mount -a -t nfs
	  }
        [ -n "$SMBFSTAB" ] && action $"Mounting SMB filesystems: " mount -a -t smbfs
        [ -n "$NCPFSTAB" ] && action $"Mounting NCP filesystems: " mount -a -t ncpfs
	touch /var/lock/subsys/netfs
	action $"Mounting other filesystems: " mount -a -t nonfs,smbfs,ncpfs
	;;
  stop)
        # Unmount loopback stuff first
	remaining=`awk '!/^#/ && $1 ~ /^\/dev\/loop/ && $2 != "/" {print $1}' /proc/mounts`
	[ -n "$remaining" ] && {
	        sig=
		retry=3
		while [ -n "$remaining" -a "$retry" -gt 0 ]
		do
			if [ "$retry" -lt 3 ]; then
				action $"Unmounting loopback filesystems (retry):" umount $remaining
			else
				action $"Unmounting loopback filesystems: " umount $remaining
		        fi
			for dev in $remaining ; do
				losetup $dev >/dev/null 2>&1 && \
				action $"Detaching loopback device $dev: " losetup -d $dev
			done	
			remaining=`awk '!/^#/ && $1 ~ /^\/dev\/loop/ && $2 != "/" {print $2}' /proc/mounts`
			[ -z "$remaining" ] && break
			/sbin/fuser -k -m $sig $remaining >/dev/null
			sleep 5
			retry=$(($retry -1))
			sig=-9
		done
	}
  	[ -n "$NETDEVMTAB" ] && {
		sig=
		retry=3
		while [ -n "$remaining" -a "$retry" -gt 0 ]
		do
			if [ "$retry" -lt 3 ]; then
				action $"Unmounting network block filesystems (retry): " umount -a -O _netdev
			else
				action $"Unmounting network block filesystems: " umount -a -O _netdev
			fi
			sleep 2
			remaining=`awk '!/^#/ && $4 ~ /_netdev/ && $2 != "/" {print $2}' /proc/mounts`
			[ -z "$remaining" ] && break
			/sbin/fuser -k -m $sig $remaining >/dev/null
			sleep 5
			retry=$(($retry - 1))
			sig=-9
		done
	}
  	[ -n "$NFSMTAB" ] && {
		sig=
		retry=3
		remaining=`awk '!/^#/ && $3 ~ /^nfs/ && $2 != "/" {print $2}' /proc/mounts`
		while [ -n "$remaining" -a "$retry" -gt 0 ]
		do
			if [ "$retry" -lt 3 ]; then
				action $"Unmounting NFS filesystems (retry): " umount -f -a -t nfs
			else
				action $"Unmounting NFS filesystems: " umount -f -a -t nfs
			fi
			sleep 2
			remaining=`awk '!/^#/ && $3 ~ /^nfs/ && $2 != "/" {print $2}' /proc/mounts`
			[ -z "$remaining" ] && break
			/sbin/fuser -k -m $sig $remaining >/dev/null
			sleep 5
			retry=$(($retry - 1))
			sig=-9
		done
	}
	[ -n "$SMBMTAB" ] && action $"Unmounting SMB filesystems: " umount -a -t smbfs
	[ -n "$NCPMTAB" ] && action $"Unmounting NCP filesystems: " umount -a -t ncpfs
	rm -f /var/lock/subsys/netfs
	;;
  status)
	if [ -f /proc/mounts ] ; then
	        [ -n "$NFSFSTAB" ] && {
		     echo $"Configured NFS mountpoints: "
		     for fs in $NFSFSTAB; do echo $fs ; done
		}
	        [ -n "$SMBFSTAB" ] && {
		     echo $"Configured SMB mountpoints: "
		     for fs in $SMBFSTAB; do echo $fs ; done
		}
	        [ -n "$NCPFSTAB" ] && {
		     echo $"Configured NCP mountpoints: "
		     for fs in $NCPFSTAB; do echo $fs ; done
		}
		[ -n "$NFSMTAB" ] && {
                      echo $"Active NFS mountpoints: "
		      for fs in $NFSMTAB; do echo $fs ; done
		}
		[ -n "$SMBMTAB" ] && {
                      echo $"Active SMB mountpoints: "
		      for fs in $SMBMTAB; do echo $fs ; done
		}
		[ -n "$NCPMTAB" ] && {
                      echo $"Active NCP mountpoints: "
		      for fs in $NCPMTAB; do echo $fs ; done
		}
	else
		echo $"/proc filesystem unavailable"
	fi
	;;
  restart)
	$0 stop
	$0 start
	;;
  reload)
        $0 start
	;;
  *)
	echo $"Usage: $0 {start|stop|restart|reload|status}"
	exit 1
esac

exit 0