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#!/usr/bin/env bash
#
# make-module-ipkgs.sh - scan through modules directory and create a package
# for each of them automatically.
#
# Copyright (C) 2015 - Phil Sutter <phil@nwl.cc>
#
# 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 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# Usage:
# $0 <ARCH> <KERNEL_VERSION> <LINUX_BUILD_DIR> <pkg-build-cmd> <PACKAGE_DIR>
ARCH="$1"
VER="$2"
BUILD_DIR="$3"
PKG_BUILD="$4"
PACKAGE_DIR="$5"
# declare associative arrays
declare -A modpaths moddeps modlevels
# recursively find a level for given module which is high enough so all
# dependencies are in a lower level
find_modlevel() { # (modname)
local dep level=0
for dep in ${moddeps[$1]}; do
[[ -n "${modlevels[$dep]}" ]] || find_modlevel $dep
[[ ${modlevels[$dep]} -lt $level ]] || level=$((modlevels[$dep] + 1))
done
modlevels[$1]=$level
}
# sanitize modname, ipkg does not allow uppercase or underscores
pkgname() { # (modname)
tr 'A-Z_' 'a-z-' <<< "kmod-$1"
}
for modpath in $(find ${BUILD_DIR}/modules -name \*.ko | xargs); do
modname="$(basename $modpath .ko)"
moddep="$(strings $modpath | awk -F= '/^depends=/{print $2}' | sed 's/,/ /g')"
modpaths[$modname]="$modpath"
moddeps[$modname]="$moddep"
done
#echo "modpaths:"
#for modname in ${!modpaths[@]}; do
# echo "$modname: ${modpaths[$modname]}"
#done
#echo
#echo "moddeps:"
#for modname in ${!moddeps[@]}; do
# echo "$modname: ${moddeps[$modname]}"
#done
#echo
# start with empty directory, avoid leftovers after version change
rm -rf ${BUILD_DIR}/linux-modules
for modname in ${!modpaths[@]}; do
find_modlevel $modname
ctrlfile=${BUILD_DIR}/kmod-control/kmod-${modname}.control
ipkgdir=${BUILD_DIR}/linux-modules/ipkg/$modname
cat >$ctrlfile <<-EOF
Package: $(pkgname $modname)
Priority: optional
Section: sys
Description: kernel module $modname
EOF
sh $(dirname $0)/make-ipkg-dir.sh $ipkgdir $ctrlfile $VER $ARCH
depline="kernel ($VER)"
for m in ${moddeps[$modname]}; do
depline+=", $(pkgname ${m})"
done
echo "Depends: $depline" >>${ipkgdir}/CONTROL/control
mkdir -p ${ipkgdir}/lib/modules/${VER}
cp ${modpaths[$modname]} ${ipkgdir}/lib/modules/${VER}
cat >${ipkgdir}/CONTROL/postinst <<EOF
#!/bin/sh
if [ -z \${IPKG_INSTROOT} ]; then
. /etc/functions.sh
load_modules /etc/modules.d/${modlevels[$modname]}-$modname
fi
EOF
chmod 0755 ${ipkgdir}/CONTROL/postinst
mkdir -p ${ipkgdir}/etc/modules.d
echo $modname >${ipkgdir}/etc/modules.d/${modlevels[$modname]}-$modname
env ${PKG_BUILD} ${ipkgdir} ${PACKAGE_DIR} || exit 1
done
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