SEAndroid: Labels of files in /data/data/APPDIR/lib directory

["Michal Mašek" <michal.masek@circletech.net>]

Hi,

I am trying to make our application operational under
SEAndroid. Currently the application produces "open" and "execute"
denials when it is loading its dynamic libraries from
/data/data/APPDIR/lib directory:

<5>[ 3913.711395] type=1400 audit(1341923463.083:9): avc:  denied  {
open } for  pid=1832 comm="t.circletech.cc" name="libsdl-1.2.so"
dev=mmcblk0p12 ino=578446 scontext=u:r:untrusted_app:s0:c38
tcontext=u:object_r:system_data_file:s0 tclass=file

<5>[ 3913.711730] type=1400 audit(1341923463.083:10): avc:  denied  {
execute } for  pid=1832 comm="t.circletech.cc"
path="/data/data/net.circletech.cc/lib/libsdl-1.2.so" dev=mmcblk0p12
ino=578446 scontext=u:r:untrusted_app:s0:c38
tcontext=u:object_r:system_data_file:s0 tclass=file


My guess is that these libraries should have a different label. Such
that the application is allowed to load them. But which one? And how to
change it? I tried to change the policy (file_contexts), but it had no
effect (it seems that files in the lib directory are relabeled during
installation).

Thank you,
Michal Mašek



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