CODEWITHSUNDEEP
androidandroid-ndkshared-libraries
Jakob Bjerre Jensen
Jakob Bjerre Jensen

Reputation: 429

How to obtain library information using Android NDK?

Using Android NDK is it possible (from native C-code) to get a list of loaded .so libraries? I am looking for an Android-version of the iOS functions _dyld_image_count()/_dyld_get_image_name().

Also is it possible to get the library name of the .so containing a specific function (on iOS this function is dladdr()).

Upvotes: 2

Views: 612

Answers (2)

Usman Kurd
Usman Kurd

Reputation: 7023

Yes you can Get this Here is Sample 

try {

 Set<String> libs = new HashSet<String>();

 String mapsFile = "/proc/" + android.os.Process.myPid() + "/maps";

  BufferedReader reader = new BufferedReader(new 

FileReader(mapsFile));

        String line;

        while ((line = reader.readLine()) != null) {

            if (line.endsWith(".so")) {

                int n = line.lastIndexOf(" ");

                libs.add(line.substring(n + 1));

            }

        }

        Log.d("Ldd", libs.size() + " libraries:");

        for (String lib : libs) {

            Log.d("Ldd", lib);

        }

    } catch (FileNotFoundException e) {

        // Do some error handling...

    } catch (IOException e) {

        // Do some error handling...

    }

try this This Might Help You

Upvotes: 1

auselen
auselen

Reputation: 28087

You can read and parse /proc/self/maps file. It contains which address each shared object loaded for your application. self will help your application to read its own info.

nm command line utiliy which is also available in Android NDK can show you which symbols are available from certain shared object files. You can look how it is implemented and try to utilize the same libraries, but it won't be trivial.

Upvotes: 1

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