Fix: update writeback instrumentation for kernel 4.14

[lttng-modules.git] / abi-debian-version.sh

#!/bin/sh

# First argument is the path to the kernel headers.
KPATH=$1

if [ ! -f ${KPATH}/include/generated/package.h ]; then
	echo 0
	exit 0
fi

# Debian snippet courtesy of Ben Hutchings

# Assuming KPATH is the target kernel headers directory
DEB_PACKAGE_VERSION=$(sed -rn 's/^#define LINUX_PACKAGE_ID " Debian (.*)"/\1/p' ${KPATH}/include/generated/package.h)
# Ignore backports part
DEB_PACKAGE_VERSION=$(echo ${DEB_PACKAGE_VERSION} | sed -r 's/~(bpo|deb).*//')
# Get -ckt update number, if present
KERNEL_CKT_UPDATE=$(echo ${DEB_PACKAGE_VERSION} | sed -rn 's/^[0-9]+\.[0-9]+\.[0-9]+-ckt([0-9]+).*/\1/p')

# Only care about the rest if it is a -ckt kernel, making sure we do not
# clash with older Debian kernels (e.g. Debian 3.2.65-1+deb7u2).
if [ -z "${KERNEL_CKT_UPDATE}" ]; then
	echo 0
	exit 0
fi

# Get package revision
DEB_PACKAGE_REVISION=$(echo ${DEB_PACKAGE_VERSION} | sed -r 's/.*-([^-]+)$/\1/')
# Get non-sec update number
DEB_PACKAGE_REVISION_BASE=$(echo ${DEB_PACKAGE_REVISION} | sed -r 's/^([0-9]+).*/\1/')
# Get security update number, if present
DEB_PACKAGE_REVISION_SECURITY=$(echo ${DEB_PACKAGE_REVISION} | sed -rn 's/.*\+(squeeze|deb[0-9])+u([0-9]+)$/\1/p')
test -n "${DEB_PACKAGE_REVISION_SECURITY}" || DEB_PACKAGE_REVISION_SECURITY=0
# Combine all update numbers into one
DEB_API_VERSION=$((KERNEL_CKT_UPDATE * 10000 + DEB_PACKAGE_REVISION_BASE * 100 + DEB_PACKAGE_REVISION_SECURITY))

echo ${DEB_API_VERSION}