Android :: How Could An App Get System Permission?

Aug 5, 2010

I wrote a test to check what kind of permissions are allowed to an application. A test run in the emulator shows the following error: However, a search of SDK doc revealed that only the following permissions are reversed to the system: Code...
This brings up 2 questions: (1) Why did the emulator deny other permissions in addition to those 4 system ones? (2) How could an app get the system permission? If this can only be done by building a custom Android like an OEM build, where in the Android platform does it check for system-level permission?

Android :: How could an app get system permission?


Android :: System Permission For Shared User ID?

Aug 24, 2010

I have a application. I write android:sharedUserId="android.uid.system" in AndroidManifest.xml. I want to get system permission. I install to HTC mobile phone. But install fail.error info: Package has no signatures that match those in shared user android.uid.system. In application I need android.uid.system, don't remove.

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General :: What Are Permission For Folder Present Inside System

Apr 23, 2014

what are the permission for app,bin,etc,init.d etc etc.

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General :: How To Change Permission Of System File Without Initializing V4.0

Jul 19, 2012

My device is Chinese and has no brand. (with Android 4.0)

I changed some things in framework-res.apk, but not set the permission to 755 before saving in /system/framework/ so now the phone keeps resetting!

How do I change the permission of this file without the device to start??

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Android :: Write To System Directory Like /system/media/audio/alarms

Feb 9, 2009

Is it possible to write data or create folder in system directory like /system/media/audio/alarms. i.e other than our respective package.

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Android :: Loading Native Libraries - System Load - Dlopen - Nexus One After FRG83 System Update

Nov 17, 2010

I am an Android app developer, and I have purchased a Nexus One device which I use to continuously test my developed Android applications.

Background: ----------------- One of the applications I developed uses a native shared library (e.g. myNativeLib.so). Only my application loads & uses this native library. I had developed this app before Android NDK came out. I pack my native library into my apk's 'assets' folder, and during my application start- up, I extract this native library from my package's assets folder to my app private directory (i.e. <assets> -> /data/data/<myappprocess>/ myNativeLib.so). Then I use System.load() API in my application to dynamically load this native library.

Problem: ------------ This application was developed during Android 1.5 (i.e. cupcake) days {I didn't have the Nexus One then}. The above procedure has been working without any problems right from Android 1.5 to Android 2.2 (i.e. Froyo). I have also tested the same on my Nexus One for Android 2.1 (i.e. Eclair) and Android 2.2.

The problem began the moment I recently upgraded my Nexus One to Android 2.2.1 via the FRG83 system update. Now, whenever I try to load my native library, I get the following error:

D/dalvikvm( 3653): Trying to load lib /data/data/<myappprocess>/ <mynativelib>.so <some address> I/dalvikvm( 3653): Unable to dlopen(/data/data/<myappprocess>/ <mynativelib>.so): Cannot load library: link_image[1995]: failed to link <mynativelib>.so

What I have Tried: -------------------------- 1. I tried my application using Android 2.2 SDK (emulator)...it works, no issues. 2. I checked out the latest froyo & android2.2.1 source code from Android open-source, built & tested my application + native lib using the latest froyo source...it built & ran, no issues. This should've taken care of any changes in the native code dependencies between Android 2.2 & Android 2.2.1 3. I even checked Android 2.2.1 source code for dalvik (java System & Runtime classes) + bionic (linker & dlopen sources) between Android 2.2 & Android 2.2.1 (using source checked out from Android open-source), but couldn't find anything consequential 4. I am unable to return my Nexus One to Android 2.2.

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Samsung Galaxy S : Recovery Boot Error - Can Not Access To /system/csc/VOD/system

Sep 4, 2010

Phone: UK Galaxy S Issue: Recovery boot error message in red writing

Multicsc : can not access to / system/csc/VOD/system/

Background: I have been trying to root my phone from information found in a youtube video. All went well and the little ninja bloke with the sniper rifle was in the app list. Tried installing busybox and was told that the phone was not rooted�..

I think I ran the root application again and at some point I started getting this error message when in recovery. I have since run the one click root method to unroot the phone and the little nija dude is no longer there. Since I rooted the phone it will no longer connect to my wireless network, it finds the network and attempts to obtain an ip address. After a few min it times out and tries again. When I load the phone recovery the error message is still present.

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HTC Incredible :: System Unlocked - Can We Modify The System While Booted

Jun 23, 2010

Can we modify the system while the phone is booted now that we have the unrevoked recovery flash tool? is this what NAND unlock means?

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General :: Restore System From Unlocked Bootloader System?

Jul 11, 2012

What will the cwm backup?

if I backup a system with locked bootloader,will the bootloader relock after I restore the system from an unlocked bootloader system?

Which content will cwm backup?(include kernel?)

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Android :: System.setProperty - Cannot Change System Property In Android

Sep 23, 2009

I use Java API "System.setProperty()" to set a system property. After invoke "System.setProperty()", API "System.getProperty()" can return the value just I set. However, when I use command "adb shell getprop" to verify, it shows that this property is not set at all. Do I wrongly understand API "System.setProperty()" ?

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Android :: Android System - System Context - Replace Classes

Oct 12, 2010

I'm engineer but more from a chip/assembler x86 level. I'm new to Android. Still figuring some general things out. I have written some apps, but have a general question. If I were to write an improved version of - let's say - TextView. Is it possible to make all app's on the system using this class, basically replace TextView? How are the java classes on the Android system, are they compiled, can I replace the library? Is this protected?

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Android :: G1 - Getting Permission When Using ADB

Feb 15, 2009

XX@XX-T23:/opt/android-sdk-linux_x86-1.0_r2/tools$ adb shell $ ls sqlite_stmt_journals cache sdcard etc init default.prop logo.rle init.trout.rc system data sys proc init.goldfish.rc init.rc sbin root dev //
It works normally $ cd data $ ls opendir failed, Permission denied
//have no permission $ cd cache cd: can't cd to cache ........//
Maybe the same reason above $. Does it mean I should get the G1's root permission?

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Android :: Why I Get Permission Alert?

Apr 7, 2010

I compiled my app in Eclipse and export it as signed application package, when I install it on my G1, I got "phone calls" and "storage" permission alert, "phone calls" permission said: "read phone state and identity", "storage" permission said :"modify/delete SD card contents". but in my AndroidManifest.xml file, I never define these two permission, and my application never need the two permissions. Does anybody know why I get the permission alert? I use ADT 0.9.6. is that possible ADT compiler or signed tools inject the two permission into my app?

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Android :: Su Permission Denied

Apr 14, 2009

Any idea why I get permission denied when I run su in adb shell? I've seen multiple posts here claiming all you have to do is run su, but it never works for me. Why?

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Android :: Testing Uses Permission

Jun 24, 2009

I'm prepping my first app for publishing and am a bit confused about how to properly test my <uses-permission> tags.. if i don't specify any permissions my app runs with no complaints on my G1. I tried installing it via "adb install" as well as with the eoeAppInstaller (as somebody had recommended). Also, the app is signed with my own certificate (not the debug cert). given that it works fine with no permissions (btw, it accesses camera and sd card), how will I know if I've set all of the proper <uses- permission> tags?

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Android :: Need To Send Sms That Allow Permission

Oct 19, 2010

How can I send SMS from Emulator A to Emulator B such that when Emulator B receive a Text message (After the Permission is Granted to emulator B) then Emulator B gets its GPS Coordinates and send it As a SMS in Respond to Emulator A.

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Android :: Reducing Permission

Oct 29, 2010

Reduce the number of permissions? What exactly do you mean by that?

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Android :: How To Get Applications Permission?

May 29, 2009

How do I access another package's permissions? Somehow with PackageManager?

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Android : How To Add Permission In Framework?

Sep 13, 2010

How can I add some permission in framework , is it any way to do this ??

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Android :: Using Permission That Doesn't Exist

Feb 10, 2010

I saw on http://developer.android.com/guide/topics/security/security.html that my app can declare a permission:

.....................

However, what if com.me.app.myapp is not yet installed on the device?

[a] I tested with "adb install", and Foo was installed on the device without incident. The only thing I see is "W/PackageManager( 62): Unknown permission com.me.app.myapp.permission.DEADLY_ACTIVITY in package com.foo.Foo"

[b] if I upload Foo into Android Market, but the user has not yet installed "myapp", will he be able to see Foo in market?

[c] if the answer to [b] is yes (I really hope so, or else it will be a major bummer ...) what message will the user see regarding com.me.app.myapp.permission.DEADLY_ACTIVITY? Since the description of this permission is declared only in "myapp", without "myapp" installed, will the user just see the name of the permission, which probably doesn't mean much?

If [c] is true, would this be a weakness to the Android permission system/Android Market? As long as I can fool the user to install my app first, I would be able to gain permissions that the user would not have otherwise granted me (had he known the true nature of such permissions).

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Android :: Bypass Permission Checking

May 6, 2009

I am doing an experimental project and want to send key events from one application to another. I know android doesn't allow applications to interfere each other in this way due to security concern. Is there any way i could bypass the security check? I've looked into the WindowManagerService class and made some modifications but it seems not working for me.

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Android :: How To Set Permission In Content Providers?

Sep 21, 2010

I have a doubt regarding content provider.My doubt is I create a app1 that creates Content Provider and in second application(app2) i am using app1's content provider methods(like insert, update etc). It's working fine but i want to set some permissions in app1, so that if any other app wants to use that provider it must have to get this permissions(<uses- permissions) then only it should be able to use providers.

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Android :: Tcpdump Permission Denied

Mar 4, 2010

I rooted my Motorola Cliq successfully in order to start using tcpdump. I copied tcpdump inti /system/bin. And I am logged in as root. When I try to run tcpdump I get Permission denied I am really blocked. I was trying to root my phone for 2 days just to be able to use tcpdump.

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Android :: Permission Denied For Using Go To Sleep

Jan 29, 2009

I wanted to use the funcion goToSleep() in PowerManager Class to force the device to sleep. But I'm getting an exception and the application crashes when I call this function. I already have added the DEVICE_POWER permission in Androidmanifest.xml. When I checked the logs I could see below error "E/AndroidRuntime( 2158): Caused by: java.lang.SecurityException: Neither user 10 020 nor current process has android.permission. DEVICE_POWER." Has anyone faced this issue before. Does application have DEVICE_POWER permission. or is it disabled.

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Android :: Understanding Permission Group Tag

May 14, 2009

I need some help to understand the use of permission-group tag in AndroidManifest files. Is there any need of using permission-group and what benefit offers this grouping? Is there a plus security using it? Does anyone know an example when to use it?

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Android :: Permission To Write On SD Card

Oct 13, 2010

EDIT: Problem solved, FileOutputStream defined uncorrectly, change to: fos = new FileOutputStream( root + "/" + saveFileName );

I have a problem writing to the SD card, here is the code: (Sorry about the layout of the code, just copy pased it )

public class SaveAndReadManager {
private String result;
private String saveFileName = "eventlist_savefile";
public String writeToFile( ArrayList<Event> arrlEvents ){
FileOutputStream fos = null;
ObjectOutputStream out = null;...............................

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Android :: Permission To Write To The SD Card

Jan 23, 2010

I would like my app to archive the application DB to the SD card. In my code I check if the directory can Write(), and if not then throw an IOException. In this perticular instance, I am trying to copy the db file to the root directory on the SD card, but its throwing an IOException. How can I change the permission on a folder/file to be able to write to it

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Android :: Cannot Install App If Permission Is Granted

May 8, 2009

I am sure that the permission is granted as I declare this in my manifest. Hence the app wouldn't be installed if the user didn't grant the permission.

(a) My guess is that it's a rooted phone where the app is started from an SD card (or similar) whereby the original user id has changed after the install. (b) This could be a Cupcake "feature". Acquiring wake locks has gone down a similar path as turning GPS on?

I am trying to track down (a) with my users, but this takes some time. I meanwhile now that at least one user uses a JF image. Anybody else has experience with that issue? if (b) might be valid? The app works on my 1.5 emulator and on > 400 phones with Cupcake, at least it is installed on them and users don't submit bug reports. So I guess (b) is not the case, but who knows?

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Android :: Root Permission For Application

Jun 11, 2010

Shall we give root permissions for android application? My requirement is I want to execute a c program using jni. That contains some functions like unmount etc. I tried in the following way static { System.loadLibrary("myjni"); }

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Android :: How To Know What Permission Required In Application?

Jun 2, 2010

I have a problem with an application, that refuses to start, and I think it may be because of missing permission(s). Is there any way to tell which permissions are required by an application in order to run?

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