Develop Bugs

hosts file and /system related

So I decided to fumble around a bit with my incredible, I read about the hosts file for blocking ads here and noticed that I would get permission denied errors, then when i had the phone with the screen on, did adb shell from a command prompt I got the super user permissions screen on my device.
now I was able to run the mount commands successfully, and as far as testing I was able to do mv /etc/hosts /etc/oldmaid and it took. however when I try to mv the other hosts file i get an error about a cross linked device. so i try doing a cat /sdcard/hosts.for.mobile.txt > /etc/hosts and get an error about the device not having sufficient space.
Anyone have any input on this? I know a cooked rom will already have this hosts file in it, but i'm trying to see if i can't get it going now.
Thanks!

I do not have one yet but what commands are available? Can you "locate hosts" or "find / -name hosts"
nm try this file "/system/etc/hosts" <-- stated in xda forums 3772987&postcount=5 Hope this is what you were looking for.

You are getting that error due to the fact that nand protection is still enabled. We need to flash a boot image with ro.secure=0 to be able to write to everything in /system.

ihtfp69 said:
You are getting that error due to the fact that nand protection is still enabled. We need to flash a boot image with ro.secure=0 to be able to write to everything in /system.
Click to expand...
Click to collapse
Ah, that would explain it. Thanks for the info!

[HOW-TO] [GSM & CDMA] Root without Unlocking Bootloader via exploit (for 4.0.1/4.0.2)

[HOW-TO] [GSM & CDMA] Root without Unlocking Bootloader via exploit (for 4.0.1/4.0.2)
Edit: This does not works on anything newer than ICL53F (i.e., 4.0.2). It works fine on ITL41D (4.0.1), ITL41F (4.0.1) and ICL53F (4.0.2)
Once you have got root, you can now use segv11's BootUnlocker app to unlock your bootloader without wiping anything. Easy as pie!
Disclaimer: I take no credit for this exploit or the implementation of it (but I will take credit for the step-by step ). Thanks to kendong2 for pointing it out to me here.
So, it looks like zx2c4 has found a local privilege escalation exploit. See source here, and saurik has managed to package it together for Android. See here. Although this may be old news to some, I hadn't seen it before.
So what does this all mean:
If you are running a 2.6.39 kernel (or above), which all Galaxy Nexus' are, you can now root your device without having to unlock your bootloader (and without losing your data).
Moreover, you should now be able to root your device even if your hardware buttons are not working.
Additionally, this allows those who have not received an OTA update and want to apply it without having an unlocked bootloader or root to do so by copying the OTA update to /cache from /sdcard.
Notes:
1) This assumes that you have USB Debugging enable on your device (Settings > Developer Options > Enable USB Debugging) and the drivers for your device installed on your computer. For the drivers, I would recommend you remove all old drivers and install these. If you don't know how to install them, or are having issues, look here.
2) This needs to be done over ADB, as a terminal emulator on-device does not have the appropriate access. If you do not have ADB, I've attached it in the zip. Unzip all files.
3) Some users indicate that, once finished the procedure, they needed to open the Superuser app.
Step-by-step:
1) Download the attached files to your computer and unzip them in the same directory as your adb.exe file;
2) Open a command prompt in the same directory;
3) Copy the files to your device:
adb push mempodroid /data/local/tmp/mempodroid
adb push su /data/local/tmp/su
adb push Superuser.apk /data/local/tmp/Superuser.apk
4) Open a shell: adb shell
5) Change permission on mempodroid to allow it to run: chmod 777 /data/local/tmp/mempodroid
6) Run the exploit: ./data/local/tmp/mempodroid 0xd7f4 0xad4b sh
Note: Once you do step 6, your prompt should change from $ to #. If not, it did not work.
7) Mount the system partition as rw: mount -o remount,rw -t ext4 /dev/block/mmcblk0p1 /system
8) Copy su to /system: cat /data/local/tmp/su > /system/bin/su
9) Change permissions on su: chmod 06755 /system/bin/su
10) Copy Superuser.apk: cat /data/local/tmp/Superuser.apk > /system/app/Superuser.apk
11) Change permissions on Superuser.apk: chmod 0644 /system/app/Superuser.apk
12) Mount the system partition as r/o: mount -o remount,ro -t ext4 /dev/block/mmcblk0p1 /system
13) Rescind root: exit
14) Exit the ADB shell: exit
15) Done. You now should have root without having to unlock your bootloader.

Reserved

Reserved

This is the same as https://github.com/saurik/mempodroid
saurik ftw.

times_infinity said:
This is the same as https://github.com/saurik/mempodroid
saurik ftw.
Click to expand...
Click to collapse
Not sure what you are getting at? I mentioned saurik in the first post, and the link you posted is in the first post. And I mentioned that this may be old news, but I haven't seen it anywhere before today in the GN forums.

Yikes! This exploit works on any kernel from 2.6.39 and >. This could become a common root method for many devices. Linus Torvalds himself posted the fix commit! Nice work by zx2c4!

Sleuth255 said:
Yikes! This exploit works on any kernel from 2.6.39 and >. This could become a common root method for many devices. Linus Torvalds himself posted the fix commit! Nice work by zx2c4!
Click to expand...
Click to collapse
You need ics to have a vulnerable kernel version, so given the number of devices which currently have ics officially, I doubt it will be common. I'd also expect Google and vendors to correct this in next release.
Also many custom kernels don't have this flaw as they are at or over 3.0.18 or have patched it. This prevents gaining unnoticed root.
Sent from my Galaxy Nexus

Hmmm I thought 2.6.39 was found in GB builds. This exploit is almost a root fix for the Moto DX 4.5.621 fiasco. Unfortunately the kernel for that build is 2.6.32.9.
Sent from my Galaxy Nexus using xda premium

This was huge in the headlines a few weeks back. It's nice to see someone putting it to a good use!
Sent from my Galaxy Nexus using xda premium

Hi, been lurking awhile, registered to clear up somethings.
I did some research while attempting to access the /data/local/ -folder with terminal emulator and I found that it would be impossible to write or to find it while being unrooted. Rooting a phone through using an unrooted access root seems impossible.
Did I miss something or is there any other way to copy mempodroid to the data- folder? I sure would like to keep all my files.

Huxleysäl said:
Hi, been lurking awhile, registered to clear up somethings.
I did some research while attempting to access the /data/local/ -folder with terminal emulator and I found that it would be impossible to write or to find it while being unrooted. Rooting a phone through using an unrooted access root seems impossible.
Did I miss something or is there any other way to copy mempodroid to the data- folder? I sure would like to keep all my files.
Click to expand...
Click to collapse
I think you are mistaken. In a terminal emulator type: cd /data/local/tmp
Edit: Fixed a mistake made by auto correct...
Sent from my Galaxy Nexus using Tapatalk

efrant said:
I think you are mistaken. In a terminal emulator type: cd /data/local/temp
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Just did. It says "No such file or directory."
Not the best source, but if you google it, people state what I state. Sorry, can't post links

try /data/local/tmp

Huxleysäl said:
Just did. It says "No such file or directory."
Not the best source, but if you google it, people state what I state. Sorry, can't post links
Click to expand...
Click to collapse
Sorry, damn auto correct. It should be: cd /data/local/tmp
Not "temp".
It works fine.
Edit: Sleuth255 beat me to it!
Sent from my Galaxy Nexus using Tapatalk

efrant said:
Sorry, damn auto correct. It should be: cd /data/local/tmp
Not "temp".
It works fine.
Edit: Sleuth255 beat me to it!
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Sure, OK, it worked. But as I'm trying to replicate his instructions, copying mempodroid to data/local/tmp doesn't compute. I tried extracting the files, puting mempodroid in a new folder in ./sdcard/ (which I named Nex), and it still couldn't find it.
Wait, just had an idea. Brb

Huxleysäl said:
Sure, OK, it worked. But as I'm trying to replicate his instructions, copying mempodroid to data/local/tmp doesn't compute. I tried extracting the files, puting mempodroid in a new folder in ./sdcard/ (which I named Nex), and it still couldn't find it.
Wait, just had an idea. Brb
Click to expand...
Click to collapse
Hmm. Looks like you may be correct. In GB, we had write access to that directory, but it looks like we don't in ICS. I'll have another look tomorrow and try to figure something out.
Sent from my Galaxy Nexus using Tapatalk

OK, this is exactly what I did:
I downloaded the files, extracted them into the ./sdcard folder of my android. I opened the console, wrote exactly as stated. Reaction? Cannot create /data/local/tmp/mempodroid: Permission denied
So, what I'm thinking is this: I tried the cd ./sdcard/mempodroid, found it. So, logically, that should mean that since the permission is dennied, the problem lies not in where I put the mempodroid, but with my authority over my phone. So, here we are again. Could anybody smarter then me clarify?
efrant said:
Hmm. Looks like you may be correct. In GB, we had write access to that directory, but it looks like we don't in ICS. I'll have another look tomorrow and try to figure something out.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
****, I was hoping I was wrong. I originally thought that the exploit was this. But alas.
Try finding an alternative write route to the /data/local/- folder. That should solve all problems, I guess. Big words, ey? This is for the simpletons like me, who stupidly forgot to bootload.

Might want to expand on the steps.
Like what program to use to copy the file.
How do you change permission.
How do you run the exploit.
How to mount rw.
How to copy su.

convolution said:
Might want to expand on the steps.
Like what program to use to copy the file.
How do you change permission.
How do you run the exploit.
How to mount rw.
How to copy su.
Click to expand...
Click to collapse
I hade my initial problems with that too. But as if this moment it doesn't really matter. Read above posts. Anyhow, to answer your question: you need to download a console emulator
Just search for it in the market. Also the commands go in this console
For example: cat /directory/filename > /newdirectory/samefilename means to copy or move from one place. To change permission you just write that line of code ending with 777 instead of cat and then the filename etc and etc.
I didn't know any of this 'till yesterday, so it is quite understandable.
cheers

Huxleysäl said:
F***, I was hoping I was wrong. I originally thought that the exploit was this. But alas.
Try finding an alternative write route to the /data/local/- folder. That should solve all problems, I guess. Big words, ey? This is for the simpletons like me, who stupidly forgot to bootload.
Click to expand...
Click to collapse
I've updated the first post. Give that a go and let me know how it turns out. (The guide may need some minor tweaking, but I am here to help you through it.)
It seems that ADB has rw access to /data/local/tmp but a terminal emulator on-device does not. So for now, you need to be plugged into your computer.
It may be possible to do this with ADB-over-Wi-Fi, but I haven't gotten there yet.

[Q] HELP!!! Lcd Density Problem !!

Hi everybody,
Sorry for my bad english, i'm italian,
I've a problem with my a100 with stock ics. yesterday i've rooted it and i've installed lcd density modder. now, i've do a mistake and saved the dpi instead of temp apply. after the reboot the home won't start cause it freeze. i can only have access to settings i can't access the lcd density app. i've tried to reset to factory but it's still the same. Can anyone help me ?
thanks

Use adb to pull build.prop from /system use some text editor to open it and find this line ro.sf.lcd_density= and change it to ro.sf.lcd_density=160 then reboot.
The exact commands are :
Code:
adb pull /system/build.prop build.prop
adb push build.prop /system/build.prop
adb shell reboot

thank you so much, resolved

can you explain how to pull it up into the text editor i'm afraid i have the same problem and found this thread i enter the pull command and recieve this in cmd prompt:
C:\Users\Owner>adb pull /system/build.prop build.prop
224 KB/s (1841 bytes in 0.008s)
and now i'm lost.....

ilovemywife269 said:
can you explain how to pull it up into the text editor i'm afraid i have the same problem and found this thread i enter the pull command and recieve this in cmd prompt:
C:\Users\Owner>adb pull /system/build.prop build.prop
224 KB/s (1841 bytes in 0.008s)
and now i'm lost.....
Click to expand...
Click to collapse
Open your editor and then open build.prop in it.
Or name it build.txt then edit it then save as build.prop.
Tapatalked from my Galaxy S II.

pio_masaki said:
Open your editor and then open build.prop in it.
Or name it build.txt then edit it then save as build.prop.
Tapatalked from my Galaxy S II.
Click to expand...
Click to collapse
i'm a noob here i need more details on how exactly i should go about getting it opened

ilovemywife269 said:
i'm a noob here i need more details on how exactly i should go about getting it opened
Click to expand...
Click to collapse
Open whatever editor you want, then click on help for how to open documents in that program.
Otherwise, file>open>whereveryousavedit/build.prop
Then file>save.
Edit: for windows I suggest notepad++
Tapatalked from my Galaxy S II.

pio_masaki said:
Open whatever editor you want, then click on help for how to open documents in that program.
Otherwise, file>open>whereveryousavedit/build.prop
Then file>save.
Edit: for windows I suggest notepad++
Tapatalked from my Galaxy S II.
Click to expand...
Click to collapse
ok i didn't save it anywhere how do i save it?

ilovemywife269 said:
ok i didn't save it anywhere how do i save it?
Click to expand...
Click to collapse
C:\Users\owner\build.prop from what you posted before.
Tapatalked from my Galaxy S II.

pio_masaki said:
C:\Users\owner\build.prop from what you posted before.
Tapatalked from my Galaxy S II.
Click to expand...
Click to collapse
ok now i get:
C:Users\Owner>adb push build.prop /system/build.prop
failed to copy 'build.prop' to '/system/build.prop' : Read-only file system

what am i doing wrong shouldn't it be in a Read-Write system?

ilovemywife269 said:
what am i doing wrong shouldn't it be in a Read-Write system?
Click to expand...
Click to collapse
adb remount
adb push build.prop /system/build.prop
Edit: if that fails try this:
adb shell mount -o remount,rw -t ext4 /dev/block/mmcblk0p3 /system

mount: permission denied (are you root?)
i was rooted before i factory reset i went through the adb root method which is basicaly how i achieved root to begin with except i used a cmd prompt terminal app and did it all on my tablet and now i'm not sure i never had a "full" root idk how to explain that but it told me i was rooted and could run root apps and such but it still limited me on a few things if this helps i have
"bootloader 0.03.06-ics (unlocked)"
it came stock with gb or honeycomb i had to find a .zip file to get ics
now i've tried to adb root again and failed i'm not sure why...

ilovemywife269 said:
mount: permission denied (are you root?)
i was rooted before i factory reset i went through the adb root method which is basicaly how i achieved root to begin with except i used a cmd prompt terminal app and did it all on my tablet and now i'm not sure i never had a "full" root idk how to explain that but it told me i was rooted and could run root apps and such but it still limited me on a few things if this helps i have
"bootloader 0.03.06-ics (unlocked)"
it came stock with gb or honeycomb i had to find a .zip file to get ics
now i've tried to adb root again and failed i'm not sure why...
Click to expand...
Click to collapse
OK time for info then. What ROM are you on? What recovery? Why did you use a method other then one intended for the a100? Being rooted but limited is probably due to missing or bad busy box installation.
Tapatalked from my A100 - Kuroikaze B3

i used an update zip for what i believed to be a stock ics rom and i rooted with a method that was intended for the a100:
Download the su binary from here.
Hook your device to the computer via USB cable.
Copy the su binary file to /mnt/sdcard/ on your tablet.
Open a command prompt on your Windows computer.
Change directory to where ADB is located. (This is usually the /tools or /platform-tools directory inside the Android SDK installation directory.)
Type in the following commands at the terminal (press Enter after each command):
adb shell /system/bin/cmdclient ec_micswitch ‘`mount -o remount,rw /system`’
adb shell /system/bin/cmdclient ec_micswitch ‘`cat /mnt/sdcard/su >/system/xbin/su`’
adb shell /system/bin/cmdclient ec_micswitch ‘`chmod 6755 /system/xbin/su`’
Install the Superuser app from the Android Market.
i used this method but i used terminal emulator on my tablet i didn't use adb
here is the update zip i used for ics- this is the error i get trying to attach the zip file:
The connection was reset
The connection to the server was reset while the page was loading.
The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.

Use the script as intended. From the PC. If you go running them on the tab itself you may have missed one somewhere.
You can't attach a file that large to a post.
Tapatalked from my Galaxy S II.

when i enter the first shell command it denies me and asks me if i am root......

ilovemywife269 said:
when i enter the first shell command it denies me and asks me if i am root......
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=23285307
Use this method.
Tapatalked from my Galaxy S II.

i tried both ics rooting methods both of which told me they achieved root however i am still denied permission to remount

with my moto phones i've always been able to flash back to stock.....or flash back to life anyways is there a way to flash this tablet?

[MOD] Moddifed framework for bluetooth tethering and bypass check UAMDL

Hello everyone.
I have been able to modify the framework-res.apk file to enable bluetooth tethering for UAMDL from T-Mobile
While I was making the changes in there I also removed from it the call to tethering provisioning and changed the csc files needed too.
So this is for stock UAMDL T-Mobile rooted roms.
I have included the files below to install it if you want.
It does go without saying to backup everything first.
Download from Google Drive
Use the following ADB commands to successfully copy over to the framework folder. Does need to be done via ADB.
Copy new framework-res-mod.apk to root of internal sd card.
adb shell stop (this will cause the screen on your phone to go black that is fine)
adb shell mount -o remount,rw /system
adb shell cp /sdcard/framework-res-mod.apk /system/framework/framework-res.apk
adb shell chmod 644 /system/framework/framework-res.apk
adb shell start (screen will come back on and look like phone is booting again)
after that you can use your favorite root file brower to copy and replace the files customer.xml and feature.xml in the system/csc folder.
If after this you are having problems with getting google play to install apps you might need to master reset.
I want to thank elesbb for help with getting this thing to be able to be compiled and also with the adb instructions to get it copied to the phone without needing a custom recovery but just root.

Awesome man. One question though, so wireless tethering works or only bluetooth tethering?

Yes.
Wireless hotspot, bluetooth (my main goal) and wired tether are working.

Ooops I goofed in the customer.xml file with the APN used for tethering.
I used apn epc.tmobile.com when it should be epc.t-mobile.com
For the time being you can adjust that I will upload a fixed copy tomorrow when I can be at my computer again.

Actually was able to edit and reupload from phone.
It is fixed now.

Apk File not shared for download.

Sorry about that.
Should be fixed.
Give it a try again.

this is what I get
c:\windows-sdk\platform-tools>adb shell stop <<<< phone screen doesnt go black
c:\windows-sdk\platform-tools>adb shell mount -o remount,rw /system
mount: Operation not permitted
c:\windows-sdk\platform-tools>adb shell cp /sdcard/framework-res-mod.apk /system
/framework/framework-res.apk
cp: /system/framework/framework-res.apk: Read-only file system
c:\windows-sdk\platform-tools>adb shell chmod 644 /system/framework/framework-re
s.apk
Unable to chmod /system/framework/framework-res.apk: Read-only file system
am i missing something here?

Sounds like the kernel is not running in insecure mode.
Try installing and enabling insecure adbd with this app and try again
http://forum.xda-developers.com/showthread.php?t=1687590

TheArtiszan said:
Sounds like the kernel is not running in insecure mode.
Try installing and enabling insecure adbd with this app and try again
http://forum.xda-developers.com/showthread.php?t=1687590
Click to expand...
Click to collapse
Thanks man we'll give it a shot after I get off work tonight and let you know how it happens
Sent from my SGH-M919 using xda premium

So far I thought I had bluetooth working on this since it shows as a option in the tethering program but when go to pair with something it does not see or be able to use that profile for internet even though it is enabled on the phone.
Wasn't able to test at the time since I had to send in my tablet but have came to find out that this was not working.
I will continue to try and see what I missed or what I can find.
If anyone has a idea that would be helpful thank you.

Is it possible to implement mod on this Framework mate
http://www.mediafire.com/download/z98oy0q9axmcavv/framework-res.apk

Having trouble modifying /sys files

Hey Everyone,
Trying to modify /sys/module/msm_otg/parameters/usbhost_charge_mode from it's default value of 'Y' to '1' in order to enable usb charging + OTG while using ElementalX's kernel. No matter what I do, I get either access is denied, or when trying to commit a change with sysctl I get nothing as the changes aren't being saved. Been working on this for the past 6 hours and can't figure it out!!! I know there's an easy straight forward way to do this, just can't figure it out!
Please help!!
Thanks,
Noob

Youve mounted R/W right? Or should I say write? Ahah software puns.
Sent from my Nexus 7 using XDA Free mobile app

Mounted as r/w and rooted...
THEBANDIT420 said:
Youve mounted R/W right? Or should I say write? Ahah software puns.
Sent from my Nexus 7 using XDA Free mobile app
Click to expand...
Click to collapse
Yeah, meant to add that detail last night but forgot in my frustration. Mounted as R/W, also, did a chmod 777 on the file as well to verify perms were correct.
Tried doing all this work via terminal vi which didn't work, then tried doing an adb pull, update the file adb push, which resulted in a permissions failure. Everything leads me to believe that my root isn't a FULL root; however, I can't find another method of performing said root. Used WugFresh Nexus Root Toolkit v1.8.3 to perform root.
Thanks for your help man,
Noob

Anyone?
Can anyone help? This is driving me absolutely insane!

n00b5auc3 said:
Can anyone help? This is driving me absolutely insane!
Click to expand...
Click to collapse
Try to do that with Root Explorer

Here's what I've done so far
matcho13579 said:
Try to do that with Root Explorer
Click to expand...
Click to collapse
Just tried what you suggested, it appeared to save; however, upon verification, the file reverted from '1' back to 'Y'.
So far I've tried:
Using a chmod 777 on the file via su terminal, edit file with vi, attempt to save - result - failure..
Using ES File Explorer with root permissions and mount /system in RW enabled, nav to file and edit with ES text editor, save - result - failure...
Mount /system as RW using some app I can't remember, then navigate using ES File Explorer to location, edit using ES text editor, save - result - failure...
adb pull on the file, update, adb push back to location - result - failure
su attempt to delete, move, and rename file in an effort to replace it - result - failure....
I'm pretty sure whoever made that file had ninja training, because every time I try to touch it it totally evades me. -_- Anyways, thanks for the help in advance.
n00b

Anyone? Bueller.... Bueller?
Someone has to have ran into this problem before....