1 files changed, 35 insertions, 0 deletions
diff --git a/tools/hotplug/libusbscanner b/tools/hotplug/libusbscanner
new file mode 100755
index 0000000..bf613a5
--- /dev/null
+++ b/tools/hotplug/libusbscanner
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# This file is part of sane-backends.
+#
+# This script changes the permissions and ownership of a USB device under
+# /proc/bus/usb to grant access to this device to users in the scanner group.
+#
+# Ownership is set to root:scanner, permissions are set to 0660.
+#
+# Arguments :
+# -----------
+# ACTION=[add|remove]
+# DEVICE=/proc/bus/usb/BBB/DDD
+# TYPE=usb
+
+# latest hotplug doesn't set DEVICE on 2.6.x kernels
+if [ -z "$DEVICE" ] ; then
+  IF=`echo $DEVPATH | sed 's/\(bus\/usb\/devices\/\)\(.*\)-\(.*\)/\2/'`
+  DEV=$(cat /sys/${DEVPATH}/devnum)
+  DEVICE=`printf '/proc/bus/usb/%.03d/%.03d' $IF $DEV`
+fi
+
+if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
+  chown root:scanner "$DEVICE"
+  chmod 0660 "$DEVICE"
+fi
+
+
+# That's an insecure but simple alternative
+# Everyone has access to the scanner
+
+# if [ "$ACTION" = "add" -a "$TYPE" = "usb" ]; then
+#  chmod 0666 "$DEVICE"
+# fi
+