Yes, maybe by using that way, the 'system uid' app could list out those files on SD card from the another app, but it's possible for the former to go further to open them for reading? Even though, the former could get the file descriptor opened in the later, but due to the permission limit, the former could reading data via such FD? thanks.
david 2010/2/2 Dianne Hackborn <[email protected]> > If you want the system process to do work on the SD card, you will need a > helper app running as another uid that does this for it. The system user is > not allowed to touch the SD card so that the system does not get killed if > the card is removed or unmounted. > > On Sun, Jan 31, 2010 at 8:13 PM, david 1 <[email protected]> wrote: > >> >> Anybody know the reason for this issue? How to resolve it? Workaround is >> OK, too. >> >> >> I have a Java-JNI-App which must run in 'system' user mode, but once >> switch to that, my App then cannot access /sdcard. Confused. >> >> >> Any hint is appreciated. Thanks. >> >> >> >> david >> >> -- >> unsubscribe: >> [email protected]<android-porting%[email protected]> >> website: http://groups.google.com/group/android-porting >> > > > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > 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. > > > -- > unsubscribe: > [email protected]<android-porting%[email protected]> > website: http://groups.google.com/group/android-porting > -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
