Fix: Add granularity to RHEL kernel version checks

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

diff --git a/abi-rhel-version.sh b/abi-rhel-version.sh
new file mode 100755 (executable)
index 0000000..30f3c17
--- /dev/null
+++ b/abi-rhel-version.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+# First argument is the path to the kernel headers.
+KPATH=$1
+
+if [ ! -f ${KPATH}/include/generated/uapi/linux/version.h ]; then
+       echo 0
+       exit 0
+fi
+
+# Assuming KPATH is the target kernel headers directory
+RHEL_RELEASE=$(sed -rn 's/^#define RHEL_RELEASE "(.*)"/\1/p' ${KPATH}/include/generated/uapi/linux/version.h)
+
+RHEL_RELEASE_MAJOR=$(echo ${RHEL_RELEASE} | sed -r 's/^([0-9]+)\.([0-9]+)\.([0-9]+)/\1/')
+RHEL_RELEASE_MINOR=$(echo ${RHEL_RELEASE} | sed -r 's/^([0-9]+)\.([0-9]+)\.([0-9]+)/\2/')
+RHEL_RELEASE_PATCH=$(echo ${RHEL_RELEASE} | sed -r 's/^([0-9]+)\.([0-9]+)\.([0-9]+)/\3/')
+
+# Combine all update numbers into one
+RHEL_API_VERSION=$((RHEL_RELEASE_MAJOR * 10000 + RHEL_RELEASE_MINOR * 100 + RHEL_RELEASE_PATCH))
+
+echo ${RHEL_API_VERSION}