Fix: discover Debian API

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

diff --git a/abi-debian-version.sh b/abi-debian-version.sh
new file mode 100755 (executable)
index 0000000..a864a21
--- /dev/null
+++ b/abi-debian-version.sh
@@ -0,0 +1,30 @@
+#!/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 ${DEB_PACKAGE_VERSION} | sed -rn 's/^[0-9]+\.[0-9]+\.[0-9]+-ckt([0-9]+).*/\1/p')
+test -n "${KERNEL_CKT_UPDATE}" || KERNEL_CKT_UPDATE=0
+# 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}