问题
If not, how does android determine whether a user belongs to a certain group?
回答1:
This thread discusses how that is done: http://groups.google.com/group/android-ndk/browse_thread/thread/adddb27c1a5438e9
It contains a broken link to a git repository though, you can find a list of name and IDs in https://android.googlesource.com/platform/system/core.git/+/master/include/private/android_filesystem_config.h.
来源：https://stackoverflow.com/questions/5144375/does-the-android-operating-system-have-files-like-etc-passwd-etc-shadow-and