Hi,
I am checking on permissive and Enforcing mechanism of selinux(SE Linux) in
Android 5.0. I have placed .so file in
/data/data/packageName/files/libtestcalc.so.
when the device is in permissive mode,
System.load("/data/data/packageName/files/libtestcalc.so"); - works fine
and I am able to access the methods of .so file with out any exceptions.
The same, System.load("/data/data/packageName/files/libtestcalc.so"); is
not working when the device is in Enforcing mode and I am getting exception
as follows.
java.lang.UnsatisfiedLinkError: dlopen failed: couldn't map
"/data/data/packageName/files/libtestcalc.so" segment 1: Permission denied
I guess in both the modes, same call flow will occur. I mean
System.load(..)->Runtime.getRuntime().load(..)->Runtime.getRuntime(..).doload(..)->Runtime.getRuntime().nativeLoad(..)
@Runtime.java->doLoad(..) documentation mentioned as "nativeLoad should be
synchronized so there's only one LD_LIBRARY_PATH in use regardless..."
When this LD_LIBRARY_PATH will get updated?
How android is differentiating the load files by modes? Want to know other
ways to load .so file from "/data/data/packageName/files/".
Regards,
Skore
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