Hi everyone, I recently installed this ROM here http://forum.xda-developers.com/showthread.php?t=2205516&page=73&nocache=1 (unfortunately I can't post questions on that thread yet). Superuser access works fine from apps and terminal emulator, but if I try to connect from adb with "adb shell su" I get "Permission denied" on my command prompt and a "Superuser denied to shell" toast on the phone.
I can't find a way to change this, apparently the shell user can't su. I tried from the terminal emulator too and here's what happens:
Code:
[email protected]: / $ whoami
u0_a14
[email protected]:/ $ su
[email protected]:/ # whoami
root
[email protected]:/ # su - shell
[email protected]:/ $ whoami
shell
[email protected]:/ $ su
Permission denied
1|[email protected]:/ $
Any help pwetty please?
Related
I used clockworkmod recovery and the cwm-root-gtab2.zip package to root my Tab 2. su appears to be installed ok, and I can get root permissions by running it from an adb shell:
~ $ adb shell
[email protected]:/ $ id
uid=2000(shell) gid=2000(shell) groups=1003(graphics),1004(input),1007(log),1009(mount),1011(adb),1015(sdcard_rw),1028(sdcard_r),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats)
[email protected]:/ $ su
[email protected]:/ # id
uid=0(root) gid=0(root) groups=1003(graphics),1004(input),1007(log),1009(mount),1011(adb),1015(sdcard_rw),1028(sdcard_r),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats)
[email protected]:/ # ls -la /system/bin/su
-rwsr-sr-x root shell 22364 2008-08-01 12:00 su
[email protected]:/ #
So the su binary is present and has setuid bit set on its permissions. But if I run it from a SSH session, or via a terminal emulator on the Tab itself, I get permission error:
[email protected]:/ $ su
Permission denied
1|[email protected]:/ $
Various root checking apps report similar problems. What am I doing wrong? Other threads suggest steps to recreate the su binary with the correct 6755 permissions, but as far as I can see, everything is already as it should be permissions-wise.
Thanks.
Wrong section. This here is only for Tab 1.
same problem
hanspampel said:
Wrong section. This here is only for Tab 1.
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I cannot find a better match for my situation than this. Any luck? Please link if your post was moved elsewhere.
jphilli85 said:
I cannot find a better match for my situation than this. Any luck? Please link if your post was moved elsewhere.
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Well, given the description (even though the OP was for the Gtab 2), I'd try the full path to the su binary.
If "ls -l /system/bin/su shows
-rwsr-sr-x root shell 22364 2008-08-01 12:00 su
then I would try
$ /system/bin/su
and see if it works - there may be another "su" on your $PATH.
If that's not it, then check that your user account has execute permissions to /system and /system/bin
Hi,
Holding in my hands this Chinese pretty well made and fast thing (maybe just border plastic looks little bit loose).
But in this post I will not tell about quality of this tablet, writing this just for other people who "googled" to solve problems :cyclops:
Device spec:
Freelander PD80 Shangpin
Exynos quadcore
Android 4.0.4
So nothing new here just flow what you need to perform.
Really this article not about rooting actually it's how to get root work here.
I'm using linux so everything below aligned to linux but with some modification you can perform everything under windows.
This flow can be applicable to any device with such problem.
And as usual - Whatever you do with your device, you do that at your own risk.
Description:
1. Executing "su" in connectbot or android terminal emulator return next:
Code:
$ su
su: uid xxxxx not allowed to su
2. By executing "su" from adb shell I'm getting the root rights:
Code:
linux$ ./adb shell
android$ su
android#
Conclusion:
So device is rooted problem just with "wrong" su binary (even busybox inside).
Let's solve it if it's really your problem.
Steps to solve:
1. Download "chainsdd superuser" (site http://androidsu.com/superuser/ direct link http://downloads.noshufou.netdna-cdn.com/superuser/Superuser-3.1.3-arm-signed.zip)
2. extract archive and find inside Superuser.apk and su
3. Put Superuser.apk and su into folder with adb
4. Upload them to android device sdcard by executing from PC:
Code:
# ./adb push ./su_free /sdcard/su_free
Code:
# ./adb push ./Superuser.apk /sdcard/superuser.apk
5. Now we need to move them into system
Launch adb shell:
Code:
$ ./adb shell
$ su
#
6. Make sure that system partition writable (it was my case):
Code:
# mount|grep system
As result you will see:
Code:
/dev/block/mmcblk0p2 /system ext4 rw,relatime,barrier=1,data=ordered 0 0
In our case we don't need that. But if you see "ro" instead of "rw", you need to simply remount it:
Code:
# mount -o remount,rw /system
7. Back up old su binary by executing
Code:
# cp /system/xbin/su /system/xbin/su_ori
8. Copy su binary from sdcard to system
Code:
# cp /sdcard/su /system/xbin/su
Fix permissions:
Code:
# chmod 6755 /system/xbin/su
Check permissions:
Code:
# ls -l /system/xbin/|grep su
You'll see something like this:
Code:
-rwsr-sr-x root root 380532 2013-11-17 01:02 su
-rwsr-sr-x root root 64412 2013-11-17 01:18 su_ori
and link it
Code:
# ln -s /system/xbin/su /system/bin/su
9. Copy superuser.apk to system applications:
Code:
# cp /sdcard/Superuser.apk /system/app/superuser.apk
Fix permissions:
Code:
# chmod 644 /system/app/superuser.apk
Check permissions:
Code:
# ls -l /system/app|grep superuser.apk
You'll see something like this:
Code:
-rw-r--r-- root root 1468798 2013-11-17 01:10 superuser.apk
10. Reboot. And try to execute su from connectbot or android terminal emulator.
You'll be asked about granting permission.
That's all now we can do everything.
Good luck.
hi i tried to run ubuntu on my android tablet and it doesnt work
Heres the code from the terminal emulator
[email protected]:/ $
[email protected]:/ $ cd /sdcard/ubuntu
[email protected]:/sdcard/ubuntu $ su
/system/bin/sh: su: not found
127|[email protected]:/sdcard/ubuntu $ sh /data/data/com.zpwebsites.linuxonandroid/files/bootscript.sh /sdcard/ubuntu/ubuntu.img
sh: /data/data/com.zpwebsites.linuxonandroid/files/bootscript.sh: Permission denied
127|[email protected]:/sdcard/ubuntu $
Click to expand...
Click to collapse
I assume you are rooted, maybe try asking for superuser permissions before changing directories to SD card. From what I see is the issue is not having elevated permissions
ComboTer said:
hi i tried to run ubuntu on my android tablet and it doesnt work
Heres the code from the terminal emulator
Click to expand...
Click to collapse
Code:
[email protected]:/sdcard/ubuntu $ su
/system/bin/sh: su: not found
do you rooted you device ?
it seems that the ' su ' command not found .
or do you allow the root access of terminal emulator ?
Got root, then su binary installed need some help backtracking a few things. If someone is up for it?
I guess the first thing first is. The first time I adb shell'd I got promted with root user: ( does this happen right off the bat for anyone else? I did a few things before this with modstrings and busybox. But, didn't try adb till after)
Code:
adb shell
[email protected]:/ #
Once I noticed I had root on shell I simply found the system mount at /dev/ubui0_0 and I mounted it rw.
Code:
[email protected]:/ # mount -o remount, /dev/ubi0_0
moved the su binary over to the sdcard. wrote it to system/xbin link named to /system/bin. gave permisions.
Code:
adb push su /sdcard/
[email protected]:/ # cat /sdcard/su > /system/xbin/su
[email protected]:/ # ln -s /system/xbin/su
[email protected]:/ # chmod 6755 /system/xbin/su
[email protected]:/ # su
[email protected]:/ # :D
Off I went. I need to update the binary, but as of right now Superuser shows root as 'allow', SuperSU deny (think it old binary).
If you guys are not getting root after adb shell on this device, I think I can backtrack the modstrings and other stuff I did.
I really don't know where this device sits on getting rooted. It seems like some windows programs did it before an update that happened at some point, but not anymore? I don't have access to windows so I don't keep up with those methods.
Thanks! Hope someone can help me out.
Hi there,
The device is
- rooted
- bootloader unlocked.
Super privilege was granted after "adb shell su".
Code:
adb shell
cat /proc/partitions
showed the list of partitions.
But
Code:
adb shell ls -l /dev/block/by-name
It returns
Code:
/dev/block/by-name: Permission denied
And
Code:
adb shell
ls -l /dev/block/platform/msm_sdcc.1/by-name/
It returned the same result.
Code:
/dev/block/platform/msm_sdcc.1/by-name/: Permission denied
How to solve it?
Thanks.
Cheers,
Wen