shell root permissions (run executable c++ from shell)

[Lukas Adamec]

Hello,
I need to run executable c++ code (compiled with crystax NDK ndk-build
tool) from shell on device. Is there any possibility to do it? There
is no problem to run application on emulator, but on device I probably
don't have sufficient permissions. Is there any way to delegate
permissions or other possibility to run executable file from shell?

Thanks a lot.

Lukas

[Chris Stratton]

It can be done, as long as what the executable wants to do does not
require root permissions.

You need to find a location that is not mounted noexec, and to which
you can adb push it. If this is a temporary experiment many have used
the /sqlite_stmt_journals directory, which is a ramdisk of sorts.

A more "supported" approach would be to compile your executable as a
jni library - which could be as simple as tacking the hello-jni
example code onto the end of it and adding a call to your main() into
the example's jni function.

[Lukas Adamec]

Thanks for advise, it's work good.

[Dianne Hackborn]

Please don't do this in production code -- /sqlite_stmt_journals is not part of the so not guaranteed to exist, and I believe that you can have security issues using this approach.

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Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails.  All such questions should be posted on public forums, where I and others can see and answer them.