Oh ok. Thanks freepine ! So, can we summarize that the mediaserver cannot really create a file in internal memory. And, the best way to provide a file access is to pass it through a file descriptor from the application to the mediaserver process.
-Ravi On Dec 25, 9:11 am, freepine <[email protected]> wrote: > I guess it's the java app you are using, i.e. com.android.music > > On Thu, Dec 25, 2008 at 9:57 AM, rktb <[email protected]> wrote: > > > Hi Dave, > > > Sorry...I did not understand completely. > > > What is the native app? > > > -Ravi > > > On Dec 25, 12:34 am, Dave Sparks <[email protected]> wrote: > > > 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 -~----------~----~----~----~------~----~------~--~---
