#!/bin/bash
#----------------------------------------------------------------------------
# /var/install/bin/samba-dismount-smbfs - dismount smb filesystem
#
# Copyright (c) 2002-2013 Thomas Bork, tom(at)eisfair(dot)net
#
# usage: /var/install/bin/samba-dismount-smbfs
#    or: /var/install/bin/samba-dismount-smbfs {"all"|"mountpoint1 mountpoint2"}
#
# Creation   : 2002-07-20 tb
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------
#set -x
. /var/install/include/eislib

mountbin='/bin/mount'
umountbin='/bin/umount'

do_crlhome ()
{
    if [ "$interactive" = "true" ]
    then
        clrhome
        mecho --info "Dismount SMB Filesystems"
        echo
    fi
}

case $# in
0)
    interactive='true'
    mountpoint=''
    ;;
1)
    interactive='false'
    mountpoint="$1"
    ;;
*)
    echo "usage: /var/install/bin/samba-dismount-smbfs" >&2
    echo "   or: /var/install/bin/samba-dismount-smbfs {\"all\"|\"mountpoint1 mountpoint2\"}" >&2
    exit 1
    ;;
esac

do_crlhome
if [ -n "`"$mountbin" -t smbfs,cifs`" ]
then
    if [ "$interactive" = "true" ]
    then
        echo "Currently mountpoints of SMB filesystems:"
        echo

        "$mountbin" -t smbfs,cifs |
        while read service on mountpoint type vfstype rest
        do
            echo -n "$vfstype service $service on mountpoint "
            mecho --info "$mountpoint"
        done
        echo
    fi
else
    mecho --error "There are no SMB filesystems mounted!"
    exit 1
fi

if [ -z "$mountpoint" ]
then
    echo "Which mountpoint do you want to dismount?"
    echo
    echo "Choice 1"
    echo "--------"
    echo "All mounted SMB filesystems on all mountpoints - type 'all'."
    echo
    echo "Choice 2"
    echo "--------"
    echo "One ore more mountpoints, type in exact names"
    echo "separated with a blank, for instance '/mountpoint1 /mountpoint2':"
    echo
    read mountpoint
fi

do_crlhome
if [ -z "$mountpoint" ]
then
    mecho --error "No mountpoint specified!"
    exit 1
else
    if [ "`echo "$mountpoint" | tr [:upper:] [:lower:]`" = "all" ]
    then
        cd /
        /bin/sync

        "$mountbin" -t smbfs,cifs |
        while read service on mountpoint type vfstype rest
        do
            "$umountbin" "$mountpoint"
            if [ $? -eq 0 ]
            then
                mecho --info "Dismounted $vfstype mounted service $service on mountpoint $mountpoint."
            else
                mecho --error "Cannot dismount $vfstype mounted service $service on mountpoint $mountpoint!"
            fi
        done
    else
        cd /
        /bin/sync

        for i in $mountpoint
        do
            if [ "`echo $i | cut -c1`" != "/" ]
            then
                mecho --error "$i is not an absolut path with a leading '/'!"
            else
                if grep -q "$i " /proc/mounts
                then
                    "$mountbin" -t smbfs,cifs |
                    while read service on point type vfstype rest
                    do
                        if [ "$i" = "$point" ]
                        then
                            "$umountbin" $i
                            if [ $? -eq 0 ]
                            then
                                mecho --info "Dismounted $vfstype mounted service $service on mountpoint $point."
                            else
                                mecho --error "Cannot dismount $vfstype mounted service $service on mountpoint $point!"
                            fi
                        fi
                    done
                else
                    mecho --error "Cannot find mountpoint $i in mounts!"
                fi
            fi
        done
    fi
fi

if [ "$interactive" = "true" ]
then
    anykey
fi