Moving Tor Browser onto SD Card breaks app on Android

We received a report that the app breaks when it is moved onto an external SD Card (or additional storage partition).

 - Einstellungen im Tor-Dienst werden aktualisiert
 - updating torrc custom configuration...
 - success.
 - checking binary version: 0.3.5.8-rc-openssl1.0.2p
 - Orbot startet ...
 - Unable to start Tor: java.io.IOException: Cannot run program
 "/mnt/sdcard/org.torproject.torbrowser-1/lib/arm64/libTor.so" (in
 directory
 "/data/user/0/org.torproject.torbrowser/app_torservice"):
 error=13, Permission denied

It seems like tor-android-service is expecting a relative path for libTor.so within the app's local storage, but it is receiving an absolute path somewhere else.

Moving Fennec onto an sdcard works, so we can see how geckoview loads libxul.

added component::applications/tor browser in Legacy / Trac owner::tbb-team in Legacy / Trac priority::medium in Legacy / Trac severity::normal in Legacy / Trac status::new in Legacy / Trac tbb-mobile in Legacy / Trac type::defect in Legacy / Trac labels

hello,

To give a little more, being one of the people who reported the problem (from the frontdesk), what I can say for my part is that it only concerns the loading of TOR. Whether it is Firefox Focus or FF Nigtly, moving the browser to the memory card does not affect its operation

Now not being a developer, I do not know how to help more in the finding of loading. Unless I have a little help concerning the tools to use.

Trac:
Username: ha_demontpellier@proximus.be

I suspect that this problem is caused since Android platform is moving the libraries to a protected area as part of app install. In the past, we were manually copying the native libraries around from within the app.

I'll need to do a little more research.

moved from legacy/trac#31814 (moved)

added Bug label and removed 1 deleted label

added Android label and removed 1 deleted label

mentioned in issue tpo/web/manual#42 (closed)

added 1 deleted label

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added First Contribution Roadmap::Future labels

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@dan @clairehurst could one of you test this and see if this is still broken after our myriad tor integration changes over the past few years?

lol neither of my phones (pixel 6, galaxy s22 ultra) take sd cards sadly. fwiw this seems to be a feature most phones are moving away from having (baffellingly to me, maybe like getting rid of phone jacks, performatively in the name of thinness and possibly more in the name of lock down and control? and just offering less features?)

added Apps::Type::Bug label

added Apps::Impact::Minimal label