Android x86 connect Android phone，usb mass storage and mtp ，porting mtp tools to Android x86，possible ?

[youling 257]

in fact，i want to my tablet as host use otg connect Android phone，porting mtp tools 

[youling 257]

Android x86 as host，isn't Android phone as host .

on Ubuntu，my tablet as host connect Android phone，Android phone mtp ，Ubuntu can read Android phone files . 

porting libmtp to Android x86 .

[Jon West]

A third party option for this is to use StickMount or an app like it

[youling 257]

do you understand my means ? you can google search Ubuntu mtp 

在 2016年11月24日星期四 UTC+8上午4:43:51，Jon West写道：

[youling 257]

you say Android phone usb mass storage，my tablet Android x86 here will has /dev/block/sdb or sdc…… ，busybox mount /dev/block/sdc /data/1，data/1 is Android phone files .

在 2016年11月24日星期四 UTC+8上午4:43:51，Jon West写道：

A third party option for this is to use StickMount or an app like it

[Evan Langlois]

First, your Android x86 machine would not use OTG for this, nor would your Android phone.  The Android-x86 machine is a host, the phone is the device.  OTG is to make your phone into a host, so you can attach a "device", such as USB Mass Storage.   You can then copy or move files between devices using a number of means.

Second, the two most common ways to do this are MTP and USB Mass Storage.  These two methods are otherwise completely unrelated.  One has nothing to do with the other.  USB Mass Storage exports the device file system to the host as a raw device, like a hard drive partition.  The host must have file system drivers.  Because the host accesses the raw device beneath the file system, you can not allow the device to access the file system at the same time.  You'll find the SD Card unmounted when the host attaches and you often can't mount "internal storage".   MTP works more like FTP.  Complete files are transferred from one device to another using a service on the device.  This means the device can use file systems that the host doesn't know about and the two can share filesystems.

Due to pressure from Microsoft and limitations of the FAT filesystem, Google is moving away from USB Storage. 

There are other ways to transfer files as well, such as using USB or Wifi networking and a host file sharing protocol such as FTP.  Personally, I like the web-based add-on to FX File Manager.  This gives a relatively complete file manager you can access with a standard web browser.  I also have MTP working on my Linux devices, but on my Remix host, I just use FX or one of the many other built-in network tools (sshfs, samba, etc).