Linux/ACPICA divergence script: Add error checking.

Add some checks for input, etc.

1 files changed, 17 insertions, 5 deletions

diff --git a/generate/linux/divergence.sh b/generate/linux/divergence.sh
index 444c3e4c2..377836c3f 100755
--- a/generate/linux/divergence.sh
+++ b/generate/linux/divergence.sh
@@ -9,22 +9,34 @@
 #
 # Usage: ./divergence.sh <Path to root of linux source code>
 #
-
 if [ -z $1 ] ; then
 	echo "Usage: $0 <Linux>"
 	echo "  Linux: Path of Linux source"
 	exit 1
 fi
-
-# Get the root of the ACPICA source tree
-ACPICA=`readlink -f ../..`
+if [ ! -e $1 ] ; then
+	echo "$1, Linux source directory does not exist"
+	exit 1
+fi
+if [ ! -d $1 ] ; then
+	echo "$1, Not a directory"
+	exit 1
+fi
 
 LINUX=$1
-LINDENT=$ACPICA/generate/linux/patches/lindent.sh
 ACPICA_TMP=acpica_tmp
 LINUX_ACPICA=linux-acpica
 ACPICA_LINUXIZED=acpica-linuxized
 
+# Get the root of the ACPICA source tree
+ACPICA=`readlink -f ../..`
+
+LINDENT=$ACPICA/generate/linux/patches/lindent.sh
+if [ ! -e $LINDENT ] ; then
+	echo "Could not find lindent.sh script"
+	exit 1
+fi
+
 #
 # Build the AcpiSrc utility if necessary
 #