我的应用程序没有存储权限，然而，我可以在/data/user/0/com.myapp/files中读取/写入文件。
当仿真器时作为root连接我可以将文件推到该目录，但是该应用程序无法读取它。
在我欺骗我的应用程序的UID之后：GID它仍然无法读取/写入它。
如果我做<代码> run-as com.myapp touch newfile 然后用作root cat pushedfile >> newfile ，然后我的应用程序可以读取 newfile 。
那是什么样的黑魔法？为什么常规UNIX文件权限似乎没有工作，以及哪些机制可以阻止应用程序读取<代码> ABCDEFGHIJKLMNABCDEFGHIJKLMN3即使是<代码> ABCDEFGHIJKLMNABCDEFGHIJKLMN4 ED？
我尝试读取docsâ¢似乎没有澄清任何东西。
My app doesn't have storage permissions, yet I can read/write files in /data/user/0/com.myapp/files .
When on emulator connected as root I can push a file to this directory, but then the app cannot read it.
After I chown it to my app's uid:gid it still cannot read/write to it.
If I do run-as com.myapp touch newfile and then as root cat pushedfile >> newfile, then my app can read newfile.
What kind of dark magic is that? Why regular unix file permissions don't seem to work, and what mechanism prevents the app to read pushedfile even after it was chowned?
I tried reading the docsxe2x84xa2 but they don't seem to clarify anything.
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