804563 - nsIFile's createUnique() with 'other' permissions doesn't work

Status: RESOLVED WONTFIX

(Core Graveyard :: Widget: Gonk, defect)

Description

[Malini Das [:mdas] - Away, not checking bugmail]

If you create a file using createUnique() within the chrome context of a root app like system, and you want to give access to other users, the permission bits don't actually get set. If you do:

Components.utils.import("resource://gre/modules/FileUtils.jsm");

var file = FileUtils.getFile("TmpD", ["suggestedName.tmp"]);

file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, parseInt("0777", 8));


the file only gets -rwxr-x--- permissions. To set the permissions correctly, you have to get the nsIFile and alter its permissions attribute.

If you have marionette enabled on your build (any 'eng' build in releases.mozilla.com/b2g has marionette enabled), you can test this by using the marionette client. In a terminal, do 'adb forward tcp:2828 tcp:2828' and then set up the python virtual environment (https://developer.mozilla.org/en-US/docs/Mozilla/Boot_to_Gecko/Setting_Up_Marionette_for_B2G#In_a_Virtual_Environment). Then in python:

from marionette import Marionette
m = Marionette()
m.start_session()
m.set_context("chrome")
m.execute_script('Components.utils.import("resource://gre/modules/FileUtils.jsm");var file = FileUtils.getFile("TmpD", ["suggestedName.tmp"]);file.createUnique(Components.interfaces.nsIFile.NORMAL_FILE_TYPE, parseInt("777", 8));return file.path;')


Then look at the permissions of the returned file.

Comment 1

[Sylvestre Ledru [:Sylvestre]]

Closing as we are not working on Firefox OS anymore.