Hey,
let me shortly explain what I am trying to achieve.
For development purposes, I want to perform quick iteration during my app
development. So instead of doing:
* Change some native code
* Compile library
* Package apk
* Install apk
* Run apk
I want to do:
* Change some native code
* Compile library
* Send .so file to the device
* Restart the app
After doing initial apk installation, I push only single .so file to the
device (/data/data/com.Tomas.MyApplication/cache/) and instruct the app to
check that location first, if it finds a library there it will try to load
that library instead of the one from /data/app folder.
I am loading the library like this -
dlopen("/data/data/com.Tomas.MyApplication/files/libmylibrary.so",
RTLD_NOW);
And it works fine on Android 6.0, but doesn't work on Android 8.0, dlopen
returns 0.
The error is:
09-25 10:11:04.395 23925 23925 W Main: type=1400 audit(0.0:49): avc: denied
{ open } for path="/data/data/com.Tomas.MyApplication/cache/libmylibrary.so"
dev="dm-0" ino=112773 scontext=u:r:untrusted_app:s0:c512,c768
tcontext=u:object_r:app_data_file:s0 tclass=file permissive=0
I assume this is somehow related to this -
https://developer.android.com/about/versions/nougat/android-7.0-changes#ndk-errors
Is there any way to workaround this? Like I said this is strictly for
development purposes to speed up iteration time.
P.S I also tried putting libmylibrary.so file to
/storage/emulated/0/Android/data/com.Tomas.MyApplication/cache//libmylibrary
.so" , and tried using dlopen, but that fails both on Android 6.0 and
Android 8.0
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