Hi Ravi, I think you need to have the native app create the file and pass the open file descriptor to the media server. This is how rights are conferred from one process to another in the Android security model.
Dave On Dec 24, 12:58 am, rktb <[email protected]> wrote: > Hi, > > Need some pointers about file access permissions: > > Here is what I have tried: > > From the Java app., I can create a file in /data/data/ > <my_package_name>/files/ using the API openFileOutput(). The > permissions of the file is as follows: > -rw-rw---- app_10 app_10 0 2008-12-23 09:17 testFile1.txt > > The files folder itself has the permissions: > drwxrwx--x app_10 app_10 2008-12-23 09:17 files > > When I create a file using native code on /sdcard, the permissions are > as follows: > ----rw-rw- system system 0 2008-12-23 09:17 > fromNativeCode.txt > Is it right to say that native code process has "system" rights? > > Now, when I create a file using the Java layer, I can open the same > file for "reading" through native code. But, I cannot open a file in > the same place using the native code with "writing" capability. The > permissions of the "files" folder is "app_10", which is the userID of > the app. Right? Doesn't "system" trump "app_10" in terms of > permissions? > > In other words, the objective that I am trying to achieve is to create > a file inside native code at a place other than sdcard. Preferably, > application specific location. > > Any document that anybody could point that would detail more about > security and permissions? I have already > readhttp://code.google.com/android/devel/security.html. But, it does not > deal with native code details. > > Thanks, > Ravi --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "android-framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-framework?hl=en -~----------~----~----~----~------~----~------~--~---
