From ab121f379a3cff458c90e6f480ba4bb68c8733dd Mon Sep 17 00:00:00 2001
From: Javier Martinez Canillas <martinez.javier@gmail.com>
Date: Sat, 27 Nov 2010 07:49:17 +0100
Subject: Linux Device Drivers 3 examples

---
 scullv/scullv_load | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 scullv/scullv_load

(limited to 'scullv/scullv_load')

diff --git a/scullv/scullv_load b/scullv/scullv_load
new file mode 100644
index 0000000..9b26276
--- /dev/null
+++ b/scullv/scullv_load
@@ -0,0 +1,30 @@
+#!/bin/sh
+module="scullv"
+device="scullv"
+mode="664"
+
+# Group: since distributions do it differently, look for wheel or use staff
+if grep '^staff:' /etc/group > /dev/null; then
+    group="staff"
+else
+    group="wheel"
+fi
+
+# remove stale nodes
+rm -f /dev/${device}? 
+
+# invoke insmod with all arguments we got
+# and use a pathname, as newer modutils don't look in . by default
+/sbin/insmod -f ./$module.ko $* || exit 1
+
+major=`cat /proc/devices | awk "\\$2==\"$module\" {print \\$1}"`
+
+mknod /dev/${device}0 c $major 0
+mknod /dev/${device}1 c $major 1
+mknod /dev/${device}2 c $major 2
+mknod /dev/${device}3 c $major 3
+ln -sf ${device}0  /dev/${device}
+
+# give appropriate group/permissions
+chgrp $group /dev/${device}[0-3]
+chmod $mode  /dev/${device}[0-3]
-- 
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