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|
#!/bin/bash
#
# Usage: modload libpath allow_mismatch [tun] [tap] [sheep]
#
# BE CAREFUL! THIS SCRIPT IS INVOKED FROM A SETUID ROOT BINARY
#
_MOL=1
_EXACT=1
echo $2 | grep -q sheep && _SHEEP=1
echo $2 | grep -q tun && _TUN=1
echo $2 | grep -q tap && _TAP=1
echo $2 | grep -q ^1 && unset _EXACT
grep -q 198 /proc/misc && unset _SHEEP
grep -q 200 /proc/misc && unset _TUN
grep -q 'tap[0-9]' /proc/net/dev && unset _TAP
LOADED=`/sbin/lsmod | sed -e 's/\(^\w*\).*/\1/g'`
for x in $LOADED ; do
[ $x = "mol" ] && unset _MOL
done
LIB_DIR=$1
BIN_DIR=/$LIB_DIR/bin/
MOD_DIR=/$LIB_DIR/modules
MOL_VERS=`$BIN_DIR/molrcget -V`
# for mol_uname
export BIN_DIR
###################################################
# Where to look for modules
###################################################
# XXX: This is also done in the startmol script
MOD_DIR="$LIB_DIR/modules"
function add_mod_dir() {
test -d "$1" || return
for x in $MOD_DIR ; do
test $x -ef $1 && return
done
MOD_DIR="$MOD_DIR $1"
}
add_mod_dir "/usr/local/lib/mol/$MOL_VERS/modules"
add_mod_dir "/usr/lib/mol/$MOL_VERS/modules"
###################################################
# get_mod_name - lookup the module binary
###################################################
function _mol_uname() {
$BIN_DIR/mol_uname "$@" -- $MOD_DIR
}
function get_mod_name () {
_MOD_DIR=`_mol_uname -e` || {
# Is exact match required?
[ "$_EXACT" ] && {
echo "===================================================================="
echo " No mol-$MOL_VERS kernel modules corresponding to the running"
echo " `_mol_uname -p` kernel were found ('startmol --list' displays"
echo " installed version). Recompile the mol kernel modules (recommended)"
echo " or try starting MOL as root using the '-a' switch. The '-a'"
echo " flag can be made default by the 'allow_kver_mismatch: yes' setting."
echo "===================================================================="
return 2
} 1>&2
_MOD_DIR=`_mol_uname -f` || {
echo "===================================================================="
echo " No kernel module suitable for this kernel was found. The MOL"
echo " kernel modules must be recompiled (refer to www.maconlinux.org"
echo " for instructions). The command 'startmol --list' can be used"
echo " to display installed kernel modules."
echo "===================================================================="
return 1;
} 1>&2
}
[ -f $_MOD_DIR/$1.ko ] && {
echo $_MOD_DIR/$1.ko ;
return 0;
}
[ -f $_MOD_DIR/$1.o ] && {
echo $_MOD_DIR/$1.o ;
return 0;
}
echo "The kernel module '$_MOD_DIR/$1.o' appears to be missing." 1>&2
return 1
}
###################################################
# load_mol_module
###################################################
function load_mol_module () {
echo "Loading Mac-on-Linux kernel module:"
/sbin/modprobe -v mol || {
echo "===================================================================="
echo " Failed to load the Mac-on-Linux kernel module -- please install "
echo " mol-modules-source and build your own, or find a binary package "
echo " providing mol-modules for your running kernel. "
echo "===================================================================="
echo
exit 1
}
return 0
}
###################################################
# load the sheep ethernet driver
###################################################
function load_mod () {
echo "Loading $2 kernel module:"
/sbin/modprobe -v $1
}
###################################################
# misc checks
###################################################
function sheep_check () {
[ ! -c /dev/sheep_net -a ! -e /dev/.devfsd -a ! -e /dev/.udev.tdb ] && {
echo "Creating the /dev/sheep_net device node."
mknod --mode=600 /dev/sheep_net c 10 198
}
return 0
}
function tun_check () {
[ ! -c /dev/net/tun -a ! -e /dev/.devfsd -a ! -e /dev/.udev.tdb ] && {
echo "Creating the /dev/net/tun device node."
[ -d /dev/net ] || mkdir --mode 755 /dev/net
mknod --mode=600 /dev/net/tun c 10 200
}
return 0
}
function mol_dev_check () {
MINOR=`cat /proc/misc | sed '/[0-9]* mol$/ ! d' | sed s/mol//`
test $MINOR -gt 0 -a $MINOR -lt 255 || {
echo "Failed to extract the MOL device number"
exit 1
}
[ ! -c /dev/mol ] && {
rm -f /dev/mol
mknod --mode=600 /dev/mol c 10 "$MINOR"
}
}
###################################################
# main
###################################################
test "$_MOL" && { load_mol_module || exit $? ; }
mol_dev_check
test "$_SHEEP" && { sheep_check && load_mod sheep "SheepNet" ; }
test "$_TUN" && { tun_check && load_mod tun "tun driver" ; }
test "$_TAP" && { load_mod ethertap "tap driver" ; }
exit 0
|
