Database Develop

Button remapping app

http://forum.xda-developers.com/showthread.php?t=850464
If you are a rooted user, please let us know if this works for remapping the volume buttons.

It does not work as it cannot get root and exits. I have lots of other programs working with root access but not this one so far.

Based on some of the posts in that thread, while getting this tool to work might not be possible, seems like it should be possible to modify the files and push to the device? IE, why use the tool at all?
As I don't use / don't care about sound on this device, I'd make vol+ / vol- both into menu buttons.
EDIT: so I pulled the contents of /system/usr/keylayout. At first glance, it looks like modifying TWL4030_Keypad.kl and potentially omap_twl4030keypad.kl is what's required (by replacing (for example) 'VOLUME_DOWN' with 'MENU'). But, can't push the files back to /system/usr/keylout - fs is ro, and adb remount tells me 'remount failed: No such file or directory' (what? Remount /system rw, like adb -h tells me it should! Ah, well).
Suspect that if I still had a spare microsd handy with nooter on it, I could do it that way - but, I don't.
EDIT2: Well, that was disappointing, and points out how little I know (or can guess). Going from 10equals2's sage words about mounting /system/app ('# cd /dev; mknod mmcblk1p6 b 179 14 ; mount -o rw mmcblk1p6 /mnt ', which worked before I installed the android sdk (IE, I didn't have adb handy), I figured, hey! That mounted /system as rw, yeah? Let's give it a go - well, it's not the same /system, IE, there's no usr/keylayout under it, and find / -name TWL4030_Keypad.kl returns null =( Foiled.

mount -o rw,remount -t ext2 /dev/block/mmcblk0p5 /system
This remounts for write access.

Then wish me luck, because I just pushed modified .kl's and did an adb reboot...
And result: Worked. I have a menu button.
I have a menu button!
edit: Documented at http://forum.xda-developers.com/showthread.php?t=859310

What would be a better implementation...
This does in fact work. What would be better would be figuring out the key value for "long press" is for the hardware keys and map *that* to menu.
See: droidforums 52854-how-make-script-run-using-hardware-keys for where I am going with this...
-K

Excellent contribution Shograt. Great thread documenting what you did. I have a question though, is it possible the linked app did not work because you did not mount -RW first?
If I followed correctly, your (awesome) ADB method did not work at first because you did not mount RW?

[Q] Removed apps come back - WHAT?

How do I avoid that built-in apps like Gallery re-appear after deletion??
When I try this on htc Hero with CM6 (and CM7) and my rooted Motorola Charm the removed apps don't re-appear - they nicely stay gone.
But in this case I run CM6.1 stable on my Wildfire and when remove apps Titanum says success but the apps still work and re-appear in Titanium after reboot. E.g. CMStats (CyanogenMod stats), Weather, Livewallpapers etc. My device is rooted but I simply can't get rid of any built-in app.
Titanum is in the SuperUser app and in Terminal su and id says I'm too allright. I've even tried
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3
chmod 777 /system
mount -o rw,remount -t rootfs /
chmod 777 /
But it still doesn't work even though filesystem says rw
Root Explorer says success when it deletes or renames APKs in /system/app - but the apps are still there later! VERY odd. But Root Explorer can't create dirs or copy files to system/app...
What am I missing here?

I got the same prob pal..both methods weren't working for me on CM 6.1 stable..try ADB it worked flawlessly..
Sent from my HTC Wildfire

read this thread will help u Creating your own Update Zip's
http://forum.xda-developers.com/showthread.php?t=917922

I think this is because wildfire doesn't have s-off. You could remove the apps from the rom before flashing, or remove using adb in recovery

boot into recovery
unmount /system (get r/w access )
adb shell rm /system/app/xxx.apk

ww231 said:
boot into recovery
unmount /system (get r/w access )
adb shell rm /system/app/xxx.apk
Click to expand...
Click to collapse
that takes for eva if u create a zip with all the files u wont gone u just flash and done no more apps very easy and simple no hazzle

[Q] ADB "No space left on device"

Hey guys
So I am currently running 2.3.3 on my N1. I manually flashed the update from Here. I used the "Modified GRI40".
So after update, I noticed that my adfree wasn't working. Running the app, it tells me my host file is up to date. However, no ads are being blocked. Same after uninstalling and re-installing the app. So then I decided to try to copy the host file over manually using adb.
I run adb and get root prompt. Then I mount /system as rw using
Code:
mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system
It appears to work. So then I try copying the host file to /system/etc using
Code:
cp hosts /system/etc
Then I get the following error.
"write error: No space left on device"
But i do, over 30mb of free space.
So I don't know what the issue is. Im thinking that maybe /system isn't being mounted as RW so it is giving the error??
Any help would be much appreciated.
Thanks!

Did you check the /system free space, or /data?

Try doing a df -h from the terminal to verify that you do, indeed, have free space on /system as well as /data, as Jack_R1 mentioned.

codesplice said:
Try doing a df -h from the terminal to verify that you do, indeed, have free space on /system as well as /data, as Jack_R1 mentioned.
Click to expand...
Click to collapse
Well looks like somehow I don't have any space left. I went to go download a terminal application from the market but it errored saying no space left.
So now I can't even install new apps.
However, under settings->storage it says I have 28MB of free space left.
Any ideas?
Sent from my Nexus One using XDA App

Reboot, wipe Dalvik cache.
Go to Manage Applications, clear browser cache.
If it restores you some space - great, proceed with what codesplice suggested above.
If it doesn't - backup, wipe and reflash.
If no backup installed - you're out of luck.

Since you seem to have adb functioning, you can run adb shell df -h to get a readout of your available space on your different file systems. This could help troubleshoot the issue.
Additionally, rather than doing a long manual "mount" command, you could simply do an adb remount to automagically remount all file systems in read/write mode.
The indication under Settings --> Storage indicates free space on /data, I believe, and gives no indication of /system (where you're trying to copy the hosts file).
Another thought (sorry this isn't really coherent at this point...): What if you were to remove your default hosts file and then push the new one?
Code:
> adb remount
Remount succeeded
> adb shell rm /system/etc/hosts
> adb push hosts /system/etc/hosts
> adb shell chmod 644 /system/etc/hosts

codesplice said:
Another thought (sorry this isn't really coherent at this point...): What if you were to remove your default hosts file and then push the new one?
Code:
> adb remount
Remount succeeded
> adb shell rm /system/etc/hosts
> adb push hosts /system/etc/hosts
> adb shell chmod 644 /system/etc/hosts
Click to expand...
Click to collapse
Well that's thing, that is why I started this thread because I was trying to use ADB to push a new hosts file but got the no space error. So I already tried that.
Sent from my Nexus One using XDA App

I was asking if you had specifically tried removing the old one and replacing it rather than just overwriting.

Oh I see what you mean. But no I have not, let me give it a shot.
**Nope didn't work. I still got the same error, no space left on device.

Have you had the opportunity to do adb shell df -h yet?

codesplice said:
Since you seem to have adb functioning, you can run adb shell df -h to get a readout of your available space on your different file systems. This could help troubleshoot the issue.
Additionally, rather than doing a long manual "mount" command, you could simply do an adb remount to automagically remount all file systems in read/write mode.
The indication under Settings --> Storage indicates free space on /data, I believe, and gives no indication of /system (where you're trying to copy the hosts file).
Another thought (sorry this isn't really coherent at this point...): What if you were to remove your default hosts file and then push the new one?
Code:
> adb remount
Remount succeeded
> adb shell rm /system/etc/hosts
> adb push hosts /system/etc/hosts
> adb shell chmod 644 /system/etc/hosts
Click to expand...
Click to collapse
No to hijack this thread, but I just wanted to ask, does "adb remount" require root?

Brownbay said:
No to hijack this thread, but I just wanted to ask, does "adb remount" require root?
Click to expand...
Click to collapse
yes, without root access to the filesystem, adb remount will fail.

So when I try adb shell df -h, I get:
"-h: No such filesystem or directory"

You don't have busybox. Try running "adb shell df", maybe it'll still give some info.

Ok when I ran adb shell df I got a listing of filesystems. /system says size 145M and used 145M. So apparently it is full.
How could that be though?

It could be that you have some bad blocks on your /system partition (you can generally only check by doing a wipe operation in recovery and then viewing the log). These bad blocks could take up space that would otherwise store your system data, and could push you over capacity.
Or you could just have some extra bloat related to that ROM. You could drive to remove some of the applications on /system that you don't have use for (the Amazon MP3 thing, for instance). I'd suggest using Titanium Backup to do this, but you can also do it by manually using the adb shell.
Alternatively, a full wipe and clean reinstall may help make sure you don't have anything left over taking up space.

I'm thinking about just flashing a new ROM altogether as I am also having issues with the battery. Under usage, Android OS now shows somewhere around 35% of the usage. This only started happening after updating to 2.3.3.
I've always ran stock ROMs, so I haven't played with any of the custom ROMs out there. Are there any ROMs you recommend for a first timer?
*Sidenote* So a nandroid backup is a complete backup of the system state correct?
So after flashing a ROM, I can just restore the nandroid backup and my phone will be exactly as it was with the old ROM and user data?

decoyjoe said:
I'm thinking about just flashing a new ROM altogether as I am also having issues with the battery. Under usage, Android OS now shows somewhere around 35% of the usage. This only started happening after updating to 2.3.3.
I've always ran stock ROMs, so I haven't played with any of the custom ROMs out there. Are there any ROMs you recommend for a first timer?
*Sidenote* So a nandroid backup is a complete backup of the system state correct?
So after flashing a ROM, I can just restore the nandroid backup and my phone will be exactly as it was with the old ROM and user data?
Click to expand...
Click to collapse
I've been really impressed with the Kang-o-rama ROMs. Basically prettied-up versions of Cyanogen. The latest release is a beta based on CM7, so still has a few issues. The prior release (KOR 1.1Final) is still quite solid.
And yes, a nandroid backup creates a copy of your current disk image, which can then be restored at any time to revert back to a previously-working configuration (great for when you break stuff!).

decoyjoe said:
I'm thinking about just flashing a new ROM altogether as I am also having issues with the battery. Under usage, Android OS now shows somewhere around 35% of the usage. This only started happening after updating to 2.3.3.
I've always ran stock ROMs, so I haven't played with any of the custom ROMs out there. Are there any ROMs you recommend for a first timer?
*Sidenote* So a nandroid backup is a complete backup of the system state correct?
So after flashing a ROM, I can just restore the nandroid backup and my phone will be exactly as it was with the old ROM and user data?
Click to expand...
Click to collapse
Exactly Remember to wipe before restoring

Oh and that brings up another thought.
So if before I flash a new ROM, I do a Titanium Backup and then flash the ROM...
Would I then be able to restore that Titanium Backup made on the previous stock ROM to restore all my apps and user data?

[Q] Unable to Chmod my galaxy tab. SGH-T849

Hi,
I get through this with my eye's closed but when I have to type in the chmod line,and hit enter, it says, "unable to chmod : / Read-Only file system / I've asked this on many different forms, and researched it and tried a lot of code to fix it, none of witch worked, so now I'm just asking strait out if anyone knows how I can fix this, It's done this on 2 separate computers so It's doubtful that it's a PC problem.
Thanks for reading this and perhaps helping me, I'm about to rip my hair out, lol,
Kn0t

Wait what?
So it's rooted tab yeah and your? Terminal or abd? Into the system. So you have super user rights huh? And the system files are mounted as read/write? If you said yes to these questioned which I assume you will as it sounds like you are savvy with permissions and how android mounts its system files from the "eyes closed" part then its a new one on me, I have never heard of this problem?
Oh and what kernel you running? is it gingerbread or froyo?
Sent from my GT-P1000

Don't forget to grant superuser its permissions. Check if the app is asking for it. Perform adb with tab on, superuser will pop up.
I felt for that couple of times.

Anyway use root explorer navigate into //system/ and there will be a button on the top to mount the system read/write. Then long press your file and select the permissions you want. Hit the same. Button as before to remount as read only and your away..
Sent from my GT-P1000

speldenaar said:
Don't forget to grant superuser its permissions. Check if the app is asking for it.
I felt for that couple of times.
Click to expand...
Click to collapse
No having super user rights doesn't mean you can write or change system files per say.. you first need the system mounted read/write which as a super user you do have the rights to....
So yes su is important but I suspect the issue here is the way the system is mounted...
Sent from my GT-P1000

And lastly I'm thinking this doesn't qualify to be in the development section bud .. its a little cause and general and should be in General section not Here.
Sorry but its out of control on these boards.... these threads shouldn't be in the development section unless you are developing something or are replying to a development thread about, well.... a development ... or finally, ahhhhh....ummm, bah... development... just had to say it one more time and couldn't get a third reason... I don't want to be harsh or you think I'm flaming you its just my 2 cents....
Sent from my GT-P1000

You're trying to write data to a partition mounted as read only.
To mount the system partition so you can write to it, simple issue this command:
mount -o remount,rw /dev/block/mtdblock3 /system
And of course to mount it back to read only again:
mount -o remount,ro /dev/block/mtdblock3 /system

i have a SGH-T849..
i want to carrier unlock it.. also i couldn't find the dialer & the messaging application in the phone.. so wanted to know how to make voice calls & send messages in it??
Sorry for the bad English & for being a noob

it's adb,, and I have super permissions, yes and it says it's a Read-only file system when I go to write my chmod. The "eye's closed" part of my post was just me being sarcastic about the amount of phones I've done this too and the amount of time I've done it with zero problems.. that's all.

Yup, I did that.. thanks a lot for the advice..!!

nobleskill said:
No having super user rights doesn't mean you can write or change system files per say.. you first need the system mounted read/write which as a super user you do have the rights to....
So yes su is important but I suspect the issue here is the way the system is mounted...
Sent from my GT-P1000
Click to expand...
Click to collapse
Yes I agree but I don't know how to fix it that way.. thanks for helping

Sorry man. It was supposed to be moved to Q and A some time ago and it just never happened. My fault, my mistake. sorry to all that this bothers, and thank you to all that are helping me out.
~k~

nobleskill said:
Anyway use root explorer navigate into //system/ and there will be a button on the top to mount the system read/write. Then long press your file and select the permissions you want. Hit the same. Button as before to remount as read only and your away..
Sent from my GT-P1000
Click to expand...
Click to collapse
Thanks a lot for this advice, I tried it and got a message that says, "System permissions cannot be changed because the file system is Read-only"
Thanks again, it was worth a try.
~K~

quick question....
When do I enter that into my command prompt? right before I try to chmod or right after????
thanks a lot
~K~

mchampeli said:
i have a SGH-T849..
i want to carrier unlock it.. also i couldn't find the dialer & the messaging application in the phone.. so wanted to know how to make voice calls & send messages in it??
Sorry for the bad English & for being a noob
Click to expand...
Click to collapse
I think you have to put on a new rom that does that. try http://theunlockr.com/2010/11/29/how-to-flash-a-custom-recovery-image-on-the-samsung-galaxy-tab/
good luck
~K~

GldRush98 said:
You're trying to write data to a partition mounted as read only.
To mount the system partition so you can write to it, simple issue this command:
mount -o remount,rw /dev/block/mtdblock3 /system
And of course to mount it back to read only again:
mount -o remount,ro /dev/block/mtdblock3 /system
Click to expand...
Click to collapse
I tried that. I tried it like this and this is what happened..
# mount -o remount,rw /dev/block/mtdblock3 /system
# chmod 755 / data/local/bin/flash_image
Unable to chmod /: Read-only file system
Did I do it wrong. Should I of put that code in a different spot?
either way thank you for trying to help me out..
~K~

Yea I tried that and it said "system permission cannot be changed becausethe file system is Read-Only" so I don' know. But I do really appriciate you trying to help me out.

knotrkr said:
I tried that. I tried it like this and this is what happened..
# mount -o remount,rw /dev/block/mtdblock3 /system
# chmod 755 / data/local/bin/flash_image
Unable to chmod /: Read-only file system
Did I do it wrong. Should I of put that code in a different spot?
either way thank you for trying to help me out..
~K~
Click to expand...
Click to collapse
Whoops, I thought the file you were chmod'ing was in the system partition.
The data partition is already mounted with read/write.
Your chmod command is incorrect... there is an extra space in there.
It should be:
chmod 755 /data/local/bin/flash_image
I don't think the data partition is mounted as read only (I could be wrong, but I didn't think it was)

ATTENTION: wifi modules path was changed in cm-9-0419

In the latest cm9 nightly build - update-cm-9-20120419-NIGHTLY, my wifi is not work with my own kernel.
So, I checked the catalog, and found this: wifi modules was changed.
http://review.cyanogenmod.com/#/c/14910/1/BoardConfigCommon.mk
old path: /system/modules/bcm4329.ko
new path: /system/lib/modules/bcm4329.ko
It will cause your wifi not work with custom kernel.
If your wifi is not work, just make a symbol link, type these command in the terminal:
su
mount -o remount,rw /system
ln -s /system/modules/bcm4329.ko /system/lib/modules/bcm4329.ko
#Thanks Paragon_X, I forgot to tell you to remount /.
mount -o remount,ro /system
Or, you are the kernel developer, your should put your kernel modules in both path, or link them.
Thanks

I confirm this change as well and the fix worked.

I have the wifi authentication problem. Do I flash the download link from the link you posted?

Paragon_X said:
I have the wifi authentication problem. Do I flash the download link from the link you posted?
Click to expand...
Click to collapse
That is not a download link, its a Git review...
Sent from my Nexus S using Tapatalk 2

DaXmax said:
That is not a download link, its a Git review...
Sent from my Nexus S using Tapatalk 2
Click to expand...
Click to collapse
Okay thanks so regarding the command written... is there spaces in there or am I seeing things?
ln -s /system/modules/bcm4329.ko /system/lib/modules/bcm4329.ko
I'm not familiar with typing in superuser so I have to ask

There are spaces.
If you are unfamiliar with the spaces, then you will be unfamiliar with the before and after commands around that command too:
mount -o remount,rw /system
and
mount -o remount,ro /system

Thanks for the fix!
Sent from my Nexus S using XDA

Thanks that will be handy for surprised users, if CM actually thought things through, they would link the dirs to allow a transition time where kernels work with modules in old location and new location.
Sent from my Galaxy Nexus

Hi,im kinda really noob at this stuff atm but do we type this in command prompt or terminal emulator (or any other program like that). And can someone confirm the code is:
su
mount -o remount,rw /system
ln -s /system/modules/bcm4329.ko /system/lib/modules/bcm4329.ko
#Thanks Paragon_X, I forgot to tell you to remount /.
mount -o remount,ro /system

the "fix" is included in the latest trinity kernels. wifi works with the newest cm9(nightlies and kangs), older cm9, and every other rom.

simms22 said:
the "fix" is included in the latest trinity kernels. wifi works with the newest cm9(nightlies and kangs), older cm9, and every other rom.
Click to expand...
Click to collapse
Im using matrix kernel v19 cfs and the latest CM9 v7. Trying to get the wifi working now and its hard.
Heres what i have done using terminal emulator
Typed in "su". Pressed enter. I granted super user permissions.
Typed in "mount -o remount,rw /system" . Pressed enter. Didnt say anything
Typed in "ln -s /system/modules/bcm4329.ko /system/lib/modules/bcm4329.ko". Pressed Enter
It showed up "link failed File exists"
now its changed to "255|[email protected]:/". Before it was "[email protected]:/"
I than typed in "mount -o remount,ro /system"
My wifi still doesnt work

I'll reply here to. The reason you can not link (ln) is that there is a file where you are trying to add a "shortcut" just remove the bcm*.ko file in /system/lib/modules and copy the module from /system/modules there. I used root explorer then it's just cut and paste
Sent from my Nexus S using Tapatalk 2

TigaTiger said:
Im using matrix kernel v19 cfs and the latest CM9 v7. Trying to get the wifi working now and its hard.
Heres what i have done using terminal emulator
Typed in "su". Pressed enter. I granted super user permissions.
Typed in "mount -o remount,rw /system" . Pressed enter. Didnt say anything
Typed in "ln -s /system/modules/bcm4329.ko /system/lib/modules/bcm4329.ko". Pressed Enter
It showed up "link failed File exists"
now its changed to "255|[email protected]:/". Before it was "[email protected]:/"
I than typed in "mount -o remount,ro /system"
My wifi still doesnt work
Click to expand...
Click to collapse
same problem here, also when i use any root explorer ( free ) i cant get permision to do this, and i have rooted my phone... anyone knows why ?

Sejmir said:
same problem here, also when i use any root explorer ( free ) i cant get permision to do this, and i have rooted my phone... anyone knows why ?
Click to expand...
Click to collapse
Mount /system as R/W (read-write) first.

kong said:
Mount /system as R/W (read-write) first.
Click to expand...
Click to collapse
didnt quite get you, but il google it tnx for the tip m8

Thanks! Wi-Fi now working. Very simple. Just copy & paste to new lib/modules location using root explorer.
Beamed from my Nexus S using Tapatalk 2

Sejmir said:
didnt understand you, mount /system in recovery then run emulator or root explorer or smthing else ?? sry im totaly new to androids, but never too late to learn new things
anywys have a lots of googling to do, coz il learn how to do this via adb shell...
Click to expand...
Click to collapse
root explorer has an option in the top of the screen, mount r/w. press it, it will now say mount r/o, thats what you want.

skitapa said:
I'll reply here to. The reason you can not link (ln) is that there is a file where you are trying to add a "shortcut" just remove the bcm*.ko file in /system/lib/modules and copy the module from /system/modules there. I used root explorer then it's just cut and paste
Sent from my Nexus S using Tapatalk 2
Click to expand...
Click to collapse
I still have no luck. Is the error everyone getting the authentication problem? and simply wifi indicator wont popup?

For all the people who dont get this too well, especielly me. Could an experienced, someone who knows this, write out the complete instructions and codes to do it. Preferably in detail because some of us have no idea what we are suppose to do. And suggest what type of programs we should be using. thanks in advance.

Ok. Let's take it from the start. When android boots it loads the kernel to handle all the drivers and inner workings of the OS. It also loads modules, that's optional drivers loaded on demand. Now CM9, used to load it's modules from /system/modules but has changed it's location to /system/lib/modules. This is new to the people making custom kernels which kernel installs it's modules in the wrong place. This makes the new kernel try to load the old module but fails because of different kernel source versions. Now, our task is to move the new module in /system/modules to /system/lib/modules overwriting the old one.
Start a terminal.
Type su and enter to become superuser which is the only user with rights to change system files.
Now if there is a box asking you to allow this, press allow.
Now type:
mount -o remount, rw /system
This will make the system folder and child folders writable.
type:
rm /system/lib/modules/bcm*
That will remove the old module.
Type:
cp /system/modules/bcm* /system/lib/modules
Reboot and it should work.
Sent from my Nexus S using Tapatalk 2