mdev mtp fix

 https://github.com/slashbeast/mdev-like-a-boss/blob/master/helpers/dev-bus-usb

 https://raw.githubusercontent.com/slashbeast/mdev-like-a-boss/master/mdev.conf

 

nano /etc/mdev.conf

# Populate /dev/bus/usb.

 

SUBSYSTEM=usb;DEVTYPE=usb_device;.* root:root 660 */opt/mdev/dev-bus-usb

 

# Don't create old usbdev* devices.

 usbdev[0-9].[0-9]* root:root 660 !

# comment these lines

# load drivers for usb devices
#usb[0-9]+    root:root 0660 */lib/mdev/usbdev

 cat /opt/mdev/dev-bus-usb

---------------------------------------------------------------------------------------------------------

#!/bin/sh

# Takes care of /dev/bus/usb devices.
#
# The mdev.conf gives us limited options on how to handle ownership, so a fix has come as script.
#
# Features:
# - Support smartcard devices. Adjust device group to one that let pcscd open them.
# - If Android device is plugged in, make it possible for users in plugdev group to open them (mtp, fastboot, adb etc)
# - Old mdev+kernel used to keep USB devices in root of /dev, relocate them into a place where they are expected..

umask 022

sys_path="/sys/${DEVPATH}"
plugdev_group="kai"
smartcard_group="pcscd"

case "${ACTION}" in
    'add')
        [ "${BUSNUM}" ] || return 1
        [ "${DEVNUM}" ] || return 1
        [ "${MAJOR}" ] || return 1
        [ "${MINOR}" ] || return 1
        mkdir -p "/dev/bus/usb/${BUSNUM}"

        # $MDEV will be exported when running `mdev -s`
        # $DEVNAME and $DEVPATH will be when we poke uevent files with add in init script.

        if [ "/dev/${MDEV}" != "/dev/bus/usb/${BUSNUM}/${DEVNUM}" ]; then
            mv "/dev/${MDEV}" "/dev/bus/usb/${BUSNUM}/${DEVNUM}"
        fi

        if ! [ "${DEVPATH}" ]; then
            return 1
        fi

        if [ -f "${sys_path}/product" ]; then
            idVendor="$(cat ${sys_path}/idVendor)"
            case "${idVendor}" in
                # Smartcards (yubikey etc).
                '1050')
                    # The tricky part here is that we may run into race conditon with pcscd not picking usb devices if the ownership is wrong.
                    # the `pcscd --hotplug` does not poke USB devices sadly. We better be fast!
                    chgrp "${smartcard_group}" "/dev/bus/usb/${BUSNUM}/${DEVNUM}" 2>/dev/null && chmod 660 "/dev/bus/usb/${BUSNUM}/${DEVNUM}"
                ;;
                # Android devices.
                '0bb4'|'18d1'|'22d9'|'22b8'|'0fce'|'19d2'|'04e8'|'2717'|'05c6')
                chgrp "${plugdev_group}" "/dev/bus/usb/${BUSNUM}/${DEVNUM}" 2>/dev/null && chmod 660 "/dev/bus/usb/${BUSNUM}/${DEVNUM}"
            ;;
            esac
        fi
    ;;
    'remove')
        [ "${BUSNUM}" ] || return 1
        [ "${DEVNUM}" ] || return 1
        [ "${MAJOR}" ] || return 1
        [ "${MINOR}" ] || return 1
        rm "/dev/bus/usb/${BUSNUM}/${DEVNUM}"
        rmdir "/dev/bus/usb/${BUSNUM}" 2>/dev/null
        rmdir "/dev/bus/usb" 2>/dev/null
    ;;
esac

--------------------------------------------------------------------------------------------------------------------------

doas apk add simple-mtpfs

simple-mtpfs    --device   1 /home/kai/mnt/android/

simple-mtpfs  -o allow_other    --device   1 /home/kai/mnt/android/