showtaints: display flags that taints the kernel

Created at 2012-11-12.

1 files changed, 17 insertions, 0 deletions

diff --git a/showtaints b/showtaints
new file mode 100755
index 0000000..5df7ca4
--- /dev/null
+++ b/showtaints
@@ -0,0 +1,17 @@
+#!/bin/bash
+for headers in /usr/src/linux-$(uname -r)/include/linux/kernel.h \
+	/usr/src/linux-*/include/linux/kernel.h; do
+	if [ -s "$headers" ]; then
+		KERNELH="$headers"
+		break
+	fi
+done
+read taints < /proc/sys/kernel/tainted
+bit=0
+while [ $((taints >> bit)) -ne 0 ]; do
+	if [ $((taints & (1 << bit))) -ne 0 ]; then
+		taint="$(awk "/#define TAINT_/{if(\$3 == $bit){print \$2}}" <"$KERNELH")"
+		echo "${taint-"Taint bit $bit is set"}"
+	fi
+	((bit++))
+done