From ce66b4865d746fe88b36f452500013c4c7965703 Mon Sep 17 00:00:00 2001
From: Michael Jeanson <mjeanson@efficios.com>
Date: Wed, 7 Dec 2016 11:09:30 -0500
Subject: [PATCH] Add SUSE Linux Enterprise kernel version tests

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---
 Makefile.ABI.workarounds |  6 ++++++
 abi-sle-version.sh       | 42 ++++++++++++++++++++++++++++++++++++++++
 lttng-kernel-version.h   | 19 ++++++++++++++++++
 3 files changed, 67 insertions(+)
 create mode 100755 abi-sle-version.sh

diff --git a/Makefile.ABI.workarounds b/Makefile.ABI.workarounds
index 470bdef7..c3717f81 100644
--- a/Makefile.ABI.workarounds
+++ b/Makefile.ABI.workarounds
@@ -16,6 +16,12 @@ ifneq ($(RHEL_API_VERSION), 0)
   ccflags-y += -DRHEL_API_VERSION=$(RHEL_API_VERSION)
 endif
 
+SLE_API_VERSION:=$(shell $(TOP_LTTNG_MODULES_DIR)/abi-sle-version.sh $(CURDIR))
+
+ifneq ($(SLE_API_VERSION), 0)
+  ccflags-y += -DSLE_API_VERSION=$(SLE_API_VERSION)
+endif
+
 RT_PATCH_VERSION:=$(shell $(TOP_LTTNG_MODULES_DIR)/rt-patch-version.sh $(CURDIR))
 
 ifneq ($(RT_PATCH_VERSION), 0)
diff --git a/abi-sle-version.sh b/abi-sle-version.sh
new file mode 100755
index 00000000..0bd65b15
--- /dev/null
+++ b/abi-sle-version.sh
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+# First argument is the path to the kernel headers.
+KPATH=$1
+
+if [ ! -f "${KPATH}/include/generated/autoconf.h" ]; then
+	echo 0
+	exit 0
+fi
+
+# Check if we are building against a Suse kernel
+SUSE_KERNEL="$(sed -rn 's/^#define CONFIG_SUSE_KERNEL (.*)/\1/p' "${KPATH}/include/generated/autoconf.h")"
+
+if [ "$SUSE_KERNEL" != "1" ]; then
+	echo 0
+	exit 0
+fi
+
+
+if [ ! -f "${KPATH}/include/generated/utsrelease.h" ]; then
+	echo 0
+	exit 0
+fi
+
+SLE_RELEASE="$(sed -rn 's/^#define UTS_RELEASE "(.*)-([0-9\.]+)-(.*)"/\2/p' "${KPATH}/include/generated/utsrelease.h")"
+
+SLE_RELEASE_MAJOR="$(echo "${SLE_RELEASE}" | sed -rn 's/^([0-9]+)(.*)$/\1/p')"
+SLE_RELEASE_MINOR="$(echo "${SLE_RELEASE}" | sed -rn 's/^([0-9]+)\.([0-9]+)(.*)$/\2/p')"
+SLE_RELEASE_PATCH="$(echo "${SLE_RELEASE}" | sed -rn 's/^([0-9]+)\.([0-9]+)\.([0-9]+)(.*)$/\3/p')"
+
+# Minor and patch versions can be omitted
+if [ "x$SLE_RELEASE_MINOR" = "x" ]; then
+	SLE_RELEASE_MINOR=0
+fi
+if [ "x$SLE_RELEASE_PATCH" = "x" ]; then
+	SLE_RELEASE_PATCH=0
+fi
+
+# Combine all update numbers into one
+SLE_API_VERSION="$((SLE_RELEASE_MAJOR * 10000 + SLE_RELEASE_MINOR * 100 + SLE_RELEASE_PATCH))"
+
+echo ${SLE_API_VERSION}
diff --git a/lttng-kernel-version.h b/lttng-kernel-version.h
index d9a5f13c..387aa0ab 100644
--- a/lttng-kernel-version.h
+++ b/lttng-kernel-version.h
@@ -96,6 +96,25 @@
 		LTTNG_RHEL_VERSION_CODE < \
 		LTTNG_RHEL_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
 
+/* SUSE Linux enterprise */
+
+#define LTTNG_SLE_KERNEL_VERSION(a, b, c, d, e, f) \
+	(((((a) << 16) + ((b) << 8) + (c)) * 10000000ULL) + ((d) * 10000) + ((e) * 100) + (f))
+
+#ifdef SLE_API_VERSION
+#define LTTNG_SLE_VERSION_CODE \
+	((LINUX_VERSION_CODE * 10000000ULL) + SLE_API_VERSION)
+#else
+#define LTTNG_SLE_VERSION_CODE 	0
+#endif
+
+#define LTTNG_SLE_KERNEL_RANGE(a_low, b_low, c_low, d_low, e_low, f_low, \
+		a_high, b_high, c_high, d_high, e_high, f_high) \
+	(LTTNG_SLE_VERSION_CODE >= \
+		LTTNG_SLE_KERNEL_VERSION(a_low, b_low, c_low, d_low, e_low, f_low) && \
+		LTTNG_SLE_VERSION_CODE < \
+		LTTNG_SLE_KERNEL_VERSION(a_high, b_high, c_high, d_high, e_high, f_high))
+
 /* RT patch */
 
 #define LTTNG_RT_KERNEL_VERSION(a, b, c, d) \
-- 
2.34.1