From 752e15af2d20a6fcf0f610a4d8e5e1e008adf5f9 Mon Sep 17 00:00:00 2001
From: David Schleef <ds@schleef.org>
Date: Mon, 13 Aug 2001 11:08:05 +0000
Subject: [PATCH] Add check on .o file for symbol leakage

---
 comedi/drivers/check_driver | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/comedi/drivers/check_driver b/comedi/drivers/check_driver
index 0c81315a..a6b7b1b2 100755
--- a/comedi/drivers/check_driver
+++ b/comedi/drivers/check_driver
@@ -32,7 +32,7 @@ esac
 
 
 # check to see if it is a driver
-if grep '^comedi_driver' ${driver} &>/dev/null;then
+if grep '^\(static \)*comedi_driver' ${driver} &>/dev/null;then
 	echo "appears to be a driver"
 else
 	echo "not a driver file"
@@ -286,3 +286,14 @@ if grep '
' ${driver} &>/dev/null;then
 	echo "E: driver has ^M characters"
 fi
 
+if [ -f "${basedriver}.o" ];then
+	# .o checks
+	n_syms=$(nm ${basedriver}.o |grep -c ' [TDC] ')
+	echo "number of global symbols: $n_syms"
+	n_xsyms=$(nm ${basedriver}.o |grep -c ' __ksymtab')
+	echo "number of exported symbols: $n_xsyms"
+	if [ $(($n_syms-$n_xsyms)) -gt 3 ];then
+		echo "W: driver leaks symbols"
+	fi
+fi
+
-- 
2.26.2