Android: Writing file on system partition and use chmod or chown

2013-10-19 00:16| 發佈者: woff| 查看: 1950| 評論: 0|原作者: woff

摘要: FileOutputStream out = openFileOutput(myfile.test, MODE_WORLD_READABLE); File f = getFileStreamPath(myfile.test); writeDataToOutputStream(out); out.close(); String filename = f.getAbsolutePath(); Runt ...

FileOutputStream out = openFileOutput("myfile.test", MODE_WORLD_READABLE);
File f = getFileStreamPath("myfile.test");
writeDataToOutputStream(out);
out.close();
String filename = f.getAbsolutePath();
Runtime r = Runtime.getRuntime();
Process suProcess = r.exec("su");
DataOutputStream dos = new DataOutputStream(suProcess.getOutputStream());
dos.writeBytes("chown 0.0 " + filename + "\n");
dos.flush();
dos.writeBytes("chmod 644 " + filename + "\n");
dos.flush();
dos.writeBytes("mv " + filename + " /system/myfile.test\n");
dos.flush();

復制代碼

The only thing left (not include din the code above) is to make /system writable. May be one additional command like mount -o rw,remount /system is sufficient - will test that.

在改變檔案權限時，請先r.exec("su");
就能正常執行下面語句

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Android: Writing file on system partition and use chmod or chown

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