From fbfd70a51a94724ad4712465ddd7a90cf7b8a0d2 Mon Sep 17 00:00:00 2001
From: Peter Wu <lekensteyn@gmail.com>
Date: Tue, 6 Aug 2013 15:55:25 +0200
Subject: usbmon-setperms: add helper for usbmon permissions

For unprivileged use of usbmon.
---
 usbmon-setperms | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100755 usbmon-setperms

(limited to 'usbmon-setperms')

diff --git a/usbmon-setperms b/usbmon-setperms
new file mode 100755
index 0000000..d2cc893
--- /dev/null
+++ b/usbmon-setperms
@@ -0,0 +1,28 @@
+#!/bin/sh
+# helper for allowing the developer to read usbmon as non-root.
+
+if [ "$USER" = "root" ]; then
+	echo "Please run as regular user or set USER"
+	exit 1
+fi
+
+if [ ! -e /dev/usbmon0 ]; then
+	echo "Attempting to modprobe usbmon..."
+	sudo modprobe -v usbmon
+	if [ ! -e /dev/usbmon0 ]; then
+		echo "Cannot locate 'usbmon' kernel module"
+		exit 1
+	fi
+fi
+
+usbmons=$(lsusb -d046d: | cut -c7 | sed 's,^,/dev/usbmon,')
+
+echo Found devices: $usbmons
+
+if [ -n "$usbmons" ]; then
+	echo "Attempting to change permissions..."
+	sudo chgrp -v $USER $usbmons
+	sudo chmod -v g+rw $usbmons
+else
+	echo "No devices found"
+fi
-- 
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