92 lines
2.5 KiB
Bash
92 lines
2.5 KiB
Bash
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#!/bin/sh
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CONFIGFS=/sys/kernel/config/usb_gadget/g1
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USB_VENDORID="0x1D6B" # Linux Foundation
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USB_PRODUCTID="0x0104" # Multifunction composite gadget
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USB_MANUF="Manjaro"
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USB_PRODUCT="Manjaro"
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USB_SERIAL=`cat /etc/machine-id`
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setup() {
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# Don't do anything if the USB gadget already exists
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[ -d $CONFIGFS ] && exit 0
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# Required to make a composite gadget
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modprobe libcomposite
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# Create all required directories
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echo "Creating the USB gadget..."
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mkdir -p $CONFIGFS
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mkdir -p $CONFIGFS/strings/0x409
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mkdir -p $CONFIGFS/configs/c.1
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mkdir -p $CONFIGFS/configs/c.1/strings/0x409
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# Setup IDs and strings
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echo "Setting up gadget strings..."
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echo $USB_VENDORID > $CONFIGFS/idVendor
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echo $USB_PRODUCTID > $CONFIGFS/idProduct
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echo $USB_MANUF > $CONFIGFS/strings/0x409/manufacturer
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echo $USB_PRODUCT > $CONFIGFS/strings/0x409/product
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echo $USB_SERIAL > $CONFIGFS/strings/0x409/serialnumber
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# Create ECM (ethernet) function
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echo "Adding ECM function..."
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mkdir $CONFIGFS/functions/ecm.usb0
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# TODO: create RNDIS function for Windows compatibility
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# Create MTP using FunctionFS
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echo "Adding MTP function using FunctionFS..."
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mkdir $CONFIGFS/functions/ffs.mtp
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# Create configuration
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echo "Creating gadget configuration..."
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echo "Ethernet + MTP" > $CONFIGFS/configs/c.1/strings/0x409/configuration
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ln -s $CONFIGFS/functions/ecm.usb0 $CONFIGFS/configs/c.1
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ln -s $CONFIGFS/functions/ffs.mtp $CONFIGFS/configs/c.1
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# Mount the MTP FunctionFS
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echo "Mounting FunctionFS..."
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mkdir -p /dev/ffs-mtp
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mount -t functionfs mtp /dev/ffs-mtp
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}
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start() {
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echo "Enabling the USB gadget..."
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sleep 1
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UDC=`ls /sys/class/udc`
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echo "$UDC" > $CONFIGFS/UDC
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}
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reset() {
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echo "Removing the USB gadget..."
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# Remove USB gadget
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if [ -d $CONFIGFS ]; then
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echo "Removing gadget configuration..."
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rm $CONFIGFS/configs/c.1/ffs.mtp
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rm $CONFIGFS/configs/c.1/ecm.usb0
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rmdir $CONFIGFS/configs/c.1/strings/0x409/
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rmdir $CONFIGFS/configs/c.1/
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rmdir $CONFIGFS/functions/ffs.mtp
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rmdir $CONFIGFS/functions/ecm.usb0
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rmdir $CONFIGFS/strings/0x409/
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rmdir $CONFIGFS
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fi
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# Unmount FunctionFS and delete its mount point
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if [ -d /dev/ffs-mtp ]; then
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echo "Unmounting FunctionFS..."
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umount /dev/ffs-mtp
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rmdir /dev/ffs-mtp
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fi
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}
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case "$1" in
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reset) reset ;;
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setup) setup ;;
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start) start ;;
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*) ;;
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esac
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