SuperUser not working with Android 4.3

[realJoshByrnes]

Model number: Nexus 4
Android version: 4.3
Baseband version: M9615A-CEFWMAZM-2.0.1700.84
Kernel version: 4.3.0-perf-gf43c3d9 android-build@vpbs1.mtv.corp.googe.com #1 Mon Jun 17 16:55:05 PDT 2013
Build number: JWR66V

I'm sure you're already aware, but I couldn't see an issue logged so I thought it might be an idea to add it.

What works:

• adb shell is able to obtain root access using the 'su' binary
• Superuser.apk is able to install itself if an insecure 'su' binary is installed.

What doesn't work:

• Any app trying to obtain root access, including Superuser.apk.

Other info:
The changes appear to be identical to the ones in the leaked GE images. I can confirm that SuperSU v1.41 (by Chainfire) which I believe was designed for GE Devices works successfully on a clean install Nexus 4, Nexus 7 (2012) and Nexus 10 (despite some users claiming it doesn't)

[ogr3]

Confirmed not working on Samsung Galaxy Nexus either after update to 4.3.

[laurentdinclaux]

Confirmed on Nexus 4 too. Definitely a 4.3 related issue.

[koush]

setuid is disabled /system now. Looking into it.

[laurentdinclaux]

It seems like Chainfire's solution is to run it has a daemon ... (https://plus.google.com/+Chainfire/posts/WqS2E9kkN1L)

[koush]

Yeah, I posted this on Google+. Not ideal. Looking into other possibilities.

[laurentdinclaux]

Yeah, I saw your post after posting that here ... Good luck, that seems tricky to solve.

[rowntreerob]

4.3 gnexus adb shell
Su
Ls -l /data/data

FAils on permissions altho su looks like its running.

[ogr3]

@rowntreerob Since /system is mounted nosuid you will not be able to do that. Reboot the device into clockworkmod and it will work.

[tavianator]

@rowntreerob Use "su system", somehow 4.3 is applying the permissions from /data even to root.

[koush]

@rowntreerob I fixed this bug in the CM tree. I'll be pushing all my changes to this main repo soon.

[koush]

Fixed

[rowntreerob]

thanks. ill clone it and build just the 'su' binary and put that in /system/xbin.

[rowntreerob]

?? still have the symptom and dont know if it is some new , usb , config thing with 4.3 and ubuntu. But , i cant use 'su' on the CLI in 'adb session'...

rob@ armeabi$ sudo /usr/local/src/android-sdk-linux/platform-tools/adb shell
shell@maguro:/ $ su system
255|shell@maguro:/ $ ls -l /cache
opendir failed, Permission denied
1|shell@maguro:/ $ ls -l /data
opendir failed, Permission denied