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build_tools/dkms-helper: Helper script for DKMS integration.

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DKMS (Dynamic Kernel Module Support) [1] provides a mechanism where kernel
modules can be automatically updated when a new kernel is booted.  This is a
simple helper script to automate the process of adding dahdi-linux to the local
DKMS system.

[1] http://linux.dell.com/dkms/

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
This commit is contained in:
Shaun Ruffell 2013-06-05 17:31:02 -05:00
parent 2e7acd212e
commit d536c3e203
1 changed files with 123 additions and 0 deletions
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build_tools/dkms-helper Executable file
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#!/bin/sh
set -e
DKMS=$(which dkms)
usage() {
echo "$(basename $0): Helper functions for DKMS (Dynamic Kernel Module Support)"
echo "Usage: $0 [add|remove|generate_conf]"
echo "Options:"
echo " remove -a : Remove all versions of DAHDI for all kernels."
echo ""
echo "Examples:"
echo ""
echo " build_tools/dkms-helper add"
echo " Installs the current version of DAHDI into the DKMS system."
echo ""
echo " build_tools/dkms-helper remove"
echo " Removes the current version of DAHDI from all kernels."
echo ""
echo " build_tools/dkms-helper generate_conf > dkms.conf"
echo " Create a dkms.conf based on the currently compiled kernel"
echo " modules. This is also done as part of add and is not"
echo " normally needed as a separate step."
echo ""
echo "NOTE: Because firmware files could be different between different"
echo "versions of DAHDI, and the firmware files are installed into the common"
echo "/lib/firmware directory, you should remove a given version of DAHDI from all"
echo "kernels before installing a new version of DAHDI to avoid potential"
echo "conflicts."
echo ""
}
generate_configuration() {
echo 'PACKAGE_NAME="dahdi-linux"'
echo "PACKAGE_VERSION=\"$(build_tools/make_version .)\""
echo 'MAKE="make KSRC=/lib/modules/${kernelver}/build"'
echo 'CLEAN="make clean"'
echo 'AUTOINSTALL="yes"'
let "module_number=0" || true
for file in $(find ./ -type f -name "*.ko"); do
MODULE_LOCATION=$(dirname $file | cut -d\/ -f 2-)
echo "BUILT_MODULE_NAME[$module_number]=\"$(basename $file .ko)\""
echo "BUILT_MODULE_LOCATION[$module_number]=\"$MODULE_LOCATION\""
echo "DEST_MODULE_LOCATION[$module_number]=\"/kernel/dahdi/$(echo $MODULE_LOCATION | cut -d\/ -f 3-)\""
let "module_number=${module_number}+1" || true
done
if [ $module_number -eq 0 ]; then
echo "WARNING: You should build the modules before generating a config." >&2
exit 1
fi
}
add() {
GIT=$(which git)
VERSION="$(build_tools/make_version .)"
if [ $(id -u) != "0" ]; then
echo "You must run $0 as root."
exit 1
fi
echo "Building for version ${VERSION}"
make > /dev/null
echo "Copying to /usr/src/dahdi-linux-${VERSION}"
if [ ! -d /usr/src/dahdi-linux-${VERSION} ]; then
if [ -d .git ]; then
${GIT} checkout-index -a --prefix=/usr/src/dahdi-linux-${VERSION}/
else
cp -f -r * /usr/src/dahdi-linux-${VERSION}/
fi
fi
make -C /usr/src/dahdi-linux-${VERSION} install-firmware firmware-loaders
build_tools/dkms-helper generate_conf > /usr/src/dahdi-linux-${VERSION}/dkms.conf
echo $VERSION > /usr/src/dahdi-linux-${VERSION}/.version
${DKMS} add -m dahdi-linux -v ${VERSION}
${DKMS} build -m dahdi-linux -v ${VERSION}
${DKMS} install --force -m dahdi-linux -v ${VERSION}
}
remove() {
if [ $(id -u) != "0" ]; then
echo "You must run $0 as root."
exit 1
fi
REMOVE_ALL=false
shift
while getopts "a" opt; do
case $opt in
a) REMOVE_ALL=true ;;
*) echo "Unknown option to remove" ; exit 1;;
esac
done
if [ $REMOVE_ALL == true ]; then
# Remove all installed dahdi versions for all kernels.
for version in $(${DKMS} status -m dahdi-linux | cut -d, -f 2 | sed -e "s/^\s\+//"); do
echo "Removing version ${version}"
${DKMS} remove -m dahdi-linux -v ${version} --all
rm -f -r /usr/src/dahdi-linux-${version}
done
else
# Just remove the version for the current tree.
GIT=$(which git)
VERSION="$(build_tools/make_version .)"
${DKMS} remove -m dahdi-linux -v ${VERSION} --all
if [ -e /usr/src/dahdi-linux-${VERSION}/dkms.conf ]; then
rm -f -r /usr/src/dahdi-linux-${VERSION}
else
echo "/usr/src/dahdi-linux-${VERSION} not a dkms dir?"
exit 1
fi
fi
}
# Run the command...
shift $(($OPTIND-1))
COMMAND=$1
case $COMMAND in
add) add $*; exit $? ;;
remove) remove $* ; exit $? ;;
generate_conf) generate_configuration; exit $? ;;
*) echo "unknown command $0" ; usage; exit 1;;
esac
exit 0