[Q] Cannot change File Permissions (solved) - AT&T LG G3

AT&T D850
Stock, rooted, Bump'd TWRP recovery installed
I noticed today that when viewing a files' properties in Solidexplorer, the Change Permissions button was missing.
I made sure the latest busybox was installed and noticed there that "chmod", "chown", and "chcon "are NOT re-linked to "busybox" but left linked to "toolbox". I didn't want to change the symlink without explicitly trying the chmod command (via toolbox and busybox) first to see if it worked.
I opened Terminial Emulator, su'd to root, then navigated to an mp3 file I have on my external sdcard, and issued both
Code:
chmod 777 "file"
busybox chmod 777 "file"
and nothing happened.
No error, but no change in the permission either (it is 770).
Anyone have a clue as to what's wrong?
UPDATE:
The problem appears to be caused by me not being thorough, not SELinux.
In summary, the SDcard is formatted as exFat which doesn't retain Linux file permissions, therefore, issuing a chmod yields no result, but no error. Solidexplorer is "smart enough" to know that fact and so there is not button to change permissions available.

Related

Stock 2.1 rom rooted ROM Manager won't FIX Permissions

I searched and got on IRC and can't get a fix for this. WHen i try to use the Fix permissions option in ROM Manager Premium i get the following error.
"error occurred while attempting to run privelaged commands"
I checked superuser and ROM Manager is in there so i selected "forget" then rebooted and tried "fix permissions" again. I got the promp to allow SU and then the error.
Any idea how i can fix this? Is this a bug or a isolated problem?
Not sure if it is related or not but I had to same problem until I bought the full version off of the market.
Maybe it's part of the extended functionality?
As I noted I have "Rom Manager Premium" I don't think it's related anyway.
Just found the answer to this (as I too was having this problem). See the link below:
http://androidforums.com/899973-post26.html
It has to do with busybox not installed in the correct place.
One more thing: Make sure that busbox is set to "755" so that it can execute.
Thanks
sw99 said:
Just found the answer to this (as I too was having this problem). See the link below:
http://androidforums.com/899973-post26.html
It has to do with busybox not installed in the correct place.
One more thing: Make sure that busbox is set to "755" so that it can execute.
Click to expand...
Click to collapse
Thanks for the link to the fix!
I am unable to get the busybox file to copy from the /data.... directory into the /system/bin/ directory. Any ideas?
jtoole1 said:
I am unable to get the busybox file to copy from the /data.... directory into the /system/bin/ directory. Any ideas?
Click to expand...
Click to collapse
did you mount the system partition prior to trying this?
I'm also having an issue moving the file using root explorer. Any other ideas?
the_grobe said:
I'm also having an issue moving the file using root explorer. Any other ideas?
Click to expand...
Click to collapse
Yeah, same here. My problem is that I've never used Root Explorer before. At the top it says mounted as r/w (in the /system/bin directory) , but it won't copy the file using the Root Explorer program. When I click [Paste] it doesn't give me an error, but when I go and check the directory, the file is not there. I even tried refresh. Any ideas?
UPDATE: I have not solved the problem yet, but I did notice that the /system/bin directory that I am trying to copy to says "0K bytes available," which is probably why it won't copy. So I guess my (no copy) problem is due to my lack of understanding of the file structure of the DI.
UPDATE: I finally got it working. Here is what I did.
1. Boot phone into recovery
2. Push busybox from /sdk/tools folder to sdcard
Code:
adb push busybox /sdcard/busybox
adb shell
3. Installed busybox to /system/xbin
Code:
$ su
#export PATH=$PATH:/system/bin
#cd /system/xbin
# cat /sdcard/busybox > busybox
# chmod 06755 busybox
# busybox --install -s /system/xbin
# rm /sdcard/busybox
# exit
$ exit
4. Booted up phone, and ROM manager fixed permissions as per request.
Hope that helps.
Thanks. I appreciate your feedback. But it looks like I wasted my money again on a useless program like "Root Explorer." I was hoping that I wouldn't have to do all of that command line crap anymore after having rooted.
Does anyone know if there is a file manager out there that will push/pull files via cut/paste rather than using a seperate computer with a command line interface?
I don't think that there is going to be a program like that until we've got full NAND unlock.
the_grobe said:
I don't think that there is going to be a program like that until we've got full NAND unlock.
Click to expand...
Click to collapse
Is someone working on that? I believe the facts are, that the Unrevoked team knows how to do it...but they won't give us the means to do it. Probably because they think we'll shoot ourselves in the foot...and blame them...and they're probably right!
I can not do the cat command it tels me Cant create busybox, read only file system.
Any ideas????????????????
when i was modding widget locker i was using linda file manager free to cut and paste out of the system folder im gonna try it right now to fix this problem ill let u know if it works

Can't manage to modify the /system folder

I've been trying for a couple of days now to try and modify the /system folder because I want to edit the host file and delete standard .apk's. However I just can't get it to work and I don't understand why.
I got a rooted 2.2 legend with modaco stock htc sense rom.
Things I tried:
Root explorer: For some reason I can't write files to the folder. It always says there is not enough free space while there is something like 6mb available. Also, deleting files doesn't actually seem to work. Root exploreres says the files are deleted but after a reboot they are there again!
Also root explorer makes my phone reboot.
ADB: Basically the same thing. Also I don't get adb to work when i'm in recovery mode (red traingle screen, I used to have clockwork but even after trying to reflash the clockwork recovery that just doesn't show up anymore and gone fubar out of the blue....) and want to enter the /system folder.
Terminal app: Same thing as above.
All 3 make my phone reboot.
What am I doing wrong?
I don't use the same phone as you, but I think that /system is usually mounted as read only (ro). Some file managers can mount /system as read/write (rw). Or I think you can chmod /system to 777 in your terminal as su with the command chmod 777 /system. Also I think CWM has an option to mount /system as rw, but I may be wrong. If you chmod, remember to set it back. You'll need to know shell commands and how to read permissions from an ls -a -l command and reset them. Hope this helps.
Sent from my SAMSUNG-SGH-I897 using XDA App

[Q] Mysterious Superuser/root problem

Ok, so this is the problem:
I have a TF101, rooted since 3.2. I have been able to do OTA updates without problems so far, keeping my root with OTA Rootkeeper.
Last week, I tried figuring out how to automatically mount cifs-shares through Tasker. Whatever I tried, the share would not mount through Tasker. It mounted without problems through command line in Terminal Emulator.
Eventually, i narrowed it down to a root acces problem in Tasker, or the Locale Execute plugin, or the secure settings plugin. I noticed that neither of those had ever asked for SU-acces and there were no logs of it in the Superuser app. When downloading other root-needing apps (e.g. rootchecker), I had the same problem: whenever a new app would normally ask for root acces, instead of the usual Superuser-prompt, the app stalled for a few seconds and then gave an error message or just plain nothing. There was no log of this in the superuser app.
When setting the superuser app to 'always grant root', the situation stayed the same: new apps didn't get root, older apps still had root without problems.
While searching for similar occurences on the internet, I saw a suggestion somewhere to clear the cache and data for the superuser app, so I did.
Now superuser still doesn't prompt and NONE of my apps have root. Apparently even the superuser app itself has no root acces anymore, since it fails to get root acces when updating the su-binary.
My guess was that completely removing su and the superuser app and subsequently re-rooting the whole thing would fix this.
I tried unrooting/rerooting through various methods (Brk, Vipermod, this one, and the new Wolf's thingy), but to no avail.
Brk tells me eveything worked fine, but changes nothing, except it gave me an even older version of the su-binary.
Vipermod hangs on "daemon started succesfully" but apparently does nothing even after 10 minutes.
The Asus Backup Utility method changed absolutely nothing
The Wolf's method looked promising, but installing the "Superuser-3.0.7-efghi-signed.zip" failed. (maybe because I did this from CWM recovery instead of his recoveryblob recovery? Dunno.)
So far I can't seem to remove root, as OTA Rootkeeper assures me the superuser app is installed and the device is rooted, even if the root acces is not granted to it (or any other app).
Any ideas?
Update: tried installing SuperSU from CWM recovery to replace Superuser app, but it gave the same 'installation aborted' message. Is this because CWM has no root acces also?
update2: I have root acces through adb shell apparently. I looked here and here for a way to replace the superuser app. I managed to remount /system, delete Superuser.apk and push the Superuser.apk and su from "Superuser-3.0.7-efghi-signed.zip" onto the device.
No apparent change, not even in the su binary version number reported by Superuser app.
I downloaded the standalone su-binary from here too, and replaced /system/bin/su with that one, too, but after reboot the Superuser app still indicated su binary version 2.3.2-efgh.
I don't know exactly when this problem started, but it could have been caused by the recent update from 9.2.1.17 to 9.2.1.21? Is it possible to revert to the previous version? If so, how? Would I lose data/apps?
Type the following in terminal:
ls -l /system/*/su
My guess is that you have two binaries and one or both of them is not superuser with permission rwsr.xr.x
Ensuring CWM working properly, you just try do backup using CWM then, if it worked then it's has nothing to do with being root access problem. And flashing wolf's root zip via CWM is all it takes to regain root after the 9.2.1.21 update.
Mine was similar root access messed after flashing the 9.2.1.21 update. Tried rectified this by copying su from system/bin to system/xbin but still nothing, but my CWM work though and use it to flash wolf's root zip to correct the su missing in the system. Now it work great..
Sent from my awesome rooted Defy: 2.3.6
@gee one
ls -l /system/*/su gives me this:
-rw-rw-rw- root root 22364 2008-02-29 02:33 su
-rwsr-sr-x root shell 26324 2008-02-29 03:33 su
So you're on to sth. Top one is located in /system/bin, lower one is in /system/xbin.
Now what do I do with this? Copy one over the other? chmod? chown?
@farsight73
As said in the OP, I tried flashing wolf's root zip in CWM, but got an error and it aborted. I did the following:
put zip on removable sd
reboot to CWM
choose update from zip
select the right zip
confirm
I also tried this with /system mounted, but same result.
I don't have acces to pc now, I will try more tonight.a
[SOLVED]
Thanks for the replies, you got me in the right direction in that I was replacing the wrong su in the wrong way.
Since Brk Toolkit managed to get me an older su, I thought it could as well give me the right one second time.
I replaced the su and superuser.apk in the /adb folder of the Brk rootkit with the one from wolf's root zip, and then used Brk Toolkit to install su and superuser.
Upon reboot, the problem was solved.
Thanks a bunch!
For future reference, I think you could just elevate to the superuser by typing in terminal "/system/xbin/su" Then you could fix system/bin/su with "chmod 06775/system/bin/su"
Then " exit" should drop you to a normal shell, and "su" will promote you in the usual way.
The issue here is that xbin and bin are both in your path, and bin is probably first, so the non-super version is "found" first. "echo $PATH" will reveal your path variable.
sent from my transformer
gee one said:
For future reference, I think you could just elevate to the superuser by typing in terminal "/system/xbin/su" Then you could fix system/bin/su with "chmod 06775/system/bin/su"
Then " exit" should drop you to a normal shell, and "su" will promote you in the usual way.
The issue here is that xbin and bin are both in your path, and bin is probably first, so the non-super version is "found" first. "echo $PATH" will reveal your path variable.
sent from my transformer
Click to expand...
Click to collapse
HEY MY FRIED I HAVE EXACTLY THE SAME PROBLEM
chmod 06775 /system/bin/su results"unable to chmod /system/bin/su: readonly filesystem "
echo $PATH RESULTS /system/bin/su: /system/Xbin/su
COULD U HELP ME WITH ZIS MY FRIEND
10Q
From adb or the terminal, type in "/system/xbin/su" to elevate to the superuser. Then mount system to read-write and delete the /system/bin/su version. Remount system as read only.
This will work if you have two versions of su and one of them is not really super.
sent while running with scissors

[MOD] Enable Stock Hotspot on Verizon

I have gotten the built-in wireless tether to work. I know there's been some discussion about getting Wireless tether without FoxFi and similar.
Since we cannot use the recovery method directly, you can still use the tools and everything from it.
So to begin:
Obviously, you must have root for this to work.
1) Download the patch.zip from the original thread. [here: http://forum.xda-developers.com/showthread.php?t=2768837 ]
2) extract the zip to somewhere on sdcard. I extracted mine to the Download folder. You may need to edit the script below to reflect your locations.
3) okay, this part gets a little weird, but bear with me...
Save this code as run.sh in Download folder or wherever you extracted. You can over-write the old run.sh if you save it in toggle folder where original was located-- BE SURE TO EDIT AS REQUIRED
Code:
#!/sbin/sh
cp /mnt/sdcard/Download/toggle/sqlite3 /data/local/tmp/sqlite3
chmod 0777 /data/local/tmp/sqlite3
mount -o remount,rw /dev/block/mmcblk0p23 /system
cp /system/framework/framework-res.apk /system/framework/framework-res.apk.bak
cp /mnt/sdcard/Download/system/framework/framework-res.apk /system/framework/framework-res.apk
/data/local/tmp/sqlite3 /data/data/com.android.providers.settings/databases/settings.db < /mnt/sdcard/Download/toggle/toggles.sql
4) now open up adb on pc (preferred!!! So you can still see progress and if necesary you can undo/alter/fix things) or terminal emulator (untested but should work, may be weird since you have to reboot phone while it's interface is locked up)
Run:
adb shell
su
sh /mnt/sdcard/Download/toggle/run.sh [or where ever you saved it]
5) Your phone will probably lock up now because you've just replaced the framework-res.apk while the system was running.
adb reboot or reboot by other methods.
6) Profit ;]
I DO NOT WARRANTY OR GUARANTEE THIS METHOD. USE AT YOUR OWN RISK
I believe the sqlite edits serve the purpose of showing the icon in the quick settings pull down. Otherwise, just replacing the framework-res.apk with the correct changes is enough: See this thread for the changes needed:
http://forum.xda-developers.com/showthread.php?t=2759119
Incidentally, I was attempting to make the changes on my own and recompile the framework-res.apk, and I must've done something not quite right because the phone hung at the verizon logo. Thankfully adb was up so I was able to remount system as rw to replace the edited framework-res.apk from the original thread OP linked. Interestingly enough, as soon as I finished copying the edited file, the phone continued booting just fine, and I'm posting from the native tethered connection now.
Edit: I was able to do the changes on the framework-res.apk extracted/decompiled from my phone after all. I'm guessing that the phone didn't like deflate method as opposed to store method (no compression) on the resources.arsc file in the apk file. Had to use the 7zip command line tool to save the modified resources.arsc file without compression to the original apk:
7z u -mx0 framework-res.apk.zip resources.arsc
where -mx0 means no compression (copy)
Got it enabled by just replacing the framework-res.apk, and noticed speeds were really slow. I get 1.88mbps on LTE at home (so-so coverage), but only .15mbps on my iPad connected to my phone via Wi-Fi.
I did this: http://forum.xda-developers.com/showpost.php?p=53431713&postcount=9
SO MUCH EASIER than what you guys were doing. :good:
Droid_Evo_8 said:
I did this: http://forum.xda-developers.com/showpost.php?p=53431713&postcount=9
SO MUCH EASIER than what you guys were doing. :good:
Click to expand...
Click to collapse
It's a manner of preference. In terms of overhead, this native method should technically be quicker to enable, as it does not have to wait for the exposed module to intercept the call and return an empty array of apps to execute for the provision check. That being said, we're probably talking miliseconds at most. While I use xposed for other modules sometimes, others might prefer not to, and this native method does not require it.
vacaloca said:
It's a manner of preference. In terms of overhead, this native method should technically be quicker to enable, as it does not have to wait for the exposed module to intercept the call and return an empty array of apps to execute for the provision check. That being said, we're probably talking miliseconds at most. While I use xposed for other modules sometimes, others might prefer not to, and this native method does not require it.
Click to expand...
Click to collapse
I don't know much about adb or terminal emulator so I'm fine with it. :good:
Here's to hoping for an easy tethering mod!
fillyo said:
Here's to hoping for an easy tethering mod!
Click to expand...
Click to collapse
I'm not sure how easier it can get than installing xposed framework + X Tether mod and rebooting, or replacing the framework-res.apk file on your phone with the one listed in the OP... either will work. This of course assumes you have the Verizon model. Replacing the premade framework-res.apk on any other S5 model would probably cause issues and wouldn't solve anything .
I just made it 'harder' on myself by deciding to copy the original framework-res.apk from my phone, and using the latest apktool and aapt to extract the apk, make the modifications, rebuild it, and replace it on my phone (after renaming the original to .bak). I mostly did this to refresh my memory on how to do it as I had done the process with another phone a while back to do the same mod. As I mentioned earlier, the sqlite stuff is only necessary if you want a toggle in the quick settings bar... otherwise you can just go into settings menu and enable it that way.
vacaloca said:
I'm not sure how easier it can get than installing xposed framework + X Tether mod and rebooting, or replacing the framework-res.apk file on your phone with the one listed in the OP... either will work.
Click to expand...
Click to collapse
I don't see the framework-res.apk file in OP, am I missing something? I have no idea how to decompile mine to make changes.
fillyo said:
I don't see the framework-res.apk file in OP, am I missing something? I have no idea how to decompile mine to make changes.
Click to expand...
Click to collapse
It's linked to in step (1). It's inside the zip file that's meant to be flashed in a recovery... however, because our bootloader is still locked, we cannot flash a recovery, so the way to do it is by replacing the framework-res.apk file as the filesystem is live, which as the OP mentions, will trigger a soft reboot as this file is used extensively by Android apps.
vacaloca said:
It's linked to in step (1). It's inside the zip file that's meant to be flashed in a recovery... however, because our bootloader is still locked, we cannot flash a recovery, so the way to do it is by replacing the framework-res.apk file as the filesystem is live, which as the OP mentions, will trigger a soft reboot as this file is used extensively by Android apps.
Click to expand...
Click to collapse
I got the framework-res apk from the zip package, I guess I am a little nervous since this is from a dev edition, correct? Anyone else successfully just replace framework-res from the zip package on their retail Verizon GS5?
fillyo said:
I got the framework-res apk from the zip package, I guess I am a little nervous since this is from a dev edition, correct? Anyone else successfully just replace framework-res from the zip package on their retail Verizon GS5?
Click to expand...
Click to collapse
The OP (presumably), user in post #3, and myself before I did the changes manually.
SO I followed these instructions and this is what i get both from adb and Term Em.
mount: No such file or directory
: Read-Only file systemramework-res.apk.bak
: Read-Only file systemramework-res.apk
/mnt/sdcard/download/toggle/run.sh[8]: /mnt/sdcard/download/toggle/sqlite3: can't execute: permission denied
I use the same folder structure you did, created a download folder and extracted the zip...
Thoughts?
tangoboyz said:
SO I followed these instructions and this is what i get both from adb and Term Em.
mount: No such file or directory
: Read-Only file systemramework-res.apk.bak
: Read-Only file systemramework-res.apk
/mnt/sdcard/download/toggle/run.sh[8]: /mnt/sdcard/download/toggle/sqlite3: can't execute: permission denied
I use the same folder structure you did, created a download folder and extracted the zip...
Thoughts?
Click to expand...
Click to collapse
Seems at least like 2 errors... the mount command can't find the input or output directories, thus you attempt to copy the files and get read-only file system, and it looks like sqlite3 needs to be changed to executable... chmod +x sqlite3
Also make sure you're running as root, obviously.
I saw a similar post int the android development subforum, and they seem to believe you will bootloop if you try to overwrite your framework-res. I chickened out and just did the xposed and x tether mod.
vacaloca said:
Seems at least like 2 errors... the mount command can't find the input or output directories, thus you attempt to copy the files and get read-only file system, and it looks like sqlite3 needs to be changed to executable... chmod +x sqlite3
Also make sure you're running as root, obviously.
Click to expand...
Click to collapse
I am rooted. Here's what i had in my run.sh:
#!/sbin/sh
cp /mnt/sdcard/Download/toggle/sqlite3 /data/local/tmp/sqlite3
chmod 0777 /data/local/tmp/sqlite3
mount -o remount,rw /dev/block/mmcblk0p23 /system
cp /system/framework/framework-res.apk /system/framework/framework-res.apk.bak
cp /mnt/sdcard/Download/system/framework/framework-res.apk /system/framework/framework-res.apk
/mnt/sdcard/Download/toggle/sqlite3 /data/data/com.android.providers.settings/databases/settings.db < /mnt/sdcard/Download/toggle/toggles.sql
NOW does this look right??
#!/sbin/sh
cp /mnt/sdcard/Download/toggle/sqlite3 /data/local/tmp/sqlite3
chmod +x 0777 /data/local/tmp/sqlite3
mount -o remount,rw /dev/block/mmcblk0p23 /system
cp /system/framework/framework-res.apk /system/framework/framework-res.apk.bak
cp /mnt/sdcard/Download/system/framework/framework-res.apk /system/framework/framework-res.apk
/mnt/sdcard/Download/toggle/sqlite3 /data/data/com.android.providers.settings/databases/settings.db < /mnt/sdcard/Download/toggle/toggles.sql
I'm sorry as I'm very new to this.
tangoboyz said:
I am rooted. Here's what i had in my run.sh:
#!/sbin/sh
cp /mnt/sdcard/Download/toggle/sqlite3 /data/local/tmp/sqlite3
chmod 0777 /data/local/tmp/sqlite3
mount -o remount,rw /dev/block/mmcblk0p23 /system
cp /system/framework/framework-res.apk /system/framework/framework-res.apk.bak
cp /mnt/sdcard/Download/system/framework/framework-res.apk /system/framework/framework-res.apk
/mnt/sdcard/Download/toggle/sqlite3 /data/data/com.android.providers.settings/databases/settings.db < /mnt/sdcard/Download/toggle/toggles.sql
NOW does this look right??
#!/sbin/sh
cp /mnt/sdcard/Download/toggle/sqlite3 /data/local/tmp/sqlite3
chmod +x 0777 /data/local/tmp/sqlite3
mount -o remount,rw /dev/block/mmcblk0p23 /system
cp /system/framework/framework-res.apk /system/framework/framework-res.apk.bak
cp /mnt/sdcard/Download/system/framework/framework-res.apk /system/framework/framework-res.apk
/mnt/sdcard/Download/toggle/sqlite3 /data/data/com.android.providers.settings/databases/settings.db < /mnt/sdcard/Download/toggle/toggles.sql
I'm sorry as I'm very new to this.
Click to expand...
Click to collapse
The original script should work assuming the files are in the right path... when I mentioned make sure you are running as root meant, make sure you run the 'su' command and get the # prompt before you run the script, otherwise the script won't run with root permissions and will fail.
For the third line, you (and the OP) can replace the mount command with:
Code:
mount -o,remount rw /system
----
As an aside, the chmod 0777 part in the original script already does mark the file as executable... chmod works with generic +rwx (read,write,execute) distinctions or the regular numbering permissions (777 means rwx for everyone)
Edit: the last line of the script should start with: /data/local/tmp/sqlite3
because that's the one that you set the permissions to rwx, not the one in your sdcard
vacaloca said:
The original script should work assuming the files are in the right path... when I mentioned make sure you are running as root meant, make sure you run the 'su' command and get the # prompt before you run the script, otherwise the script won't run with root permissions and will fail.
For the third line, you (and the OP) can replace the mount command with:
Code:
mount -o,remount rw /system
----
As an aside, the chmod 0777 part in the original script already does mark the file as executable... chmod works with generic +rwx (read,write,execute) distinctions or the regular numbering permissions (777 means rwx for everyone)
Edit: the last line of the script should start with: /data/local/tmp/sqlite3
because that's the one that you set the permissions to rwx, not the one in your sdcard
Click to expand...
Click to collapse
Hmm still no dice... Something isn't working right. Really I wanted the Hotspot in the pull down menu. I am currently paying for hotspot anyway....
Just found that wanam xposed has an option to skip provisioning check. Anyone tried this yet? Seems to enable native tethering but doesn't give a quick settings button.
dlscott1111 said:
Just found that wanam xposed has an option to skip provisioning check. Anyone tried this yet? Seems to enable native tethering but doesn't give a quick settings button.
Click to expand...
Click to collapse
Yes, we have tried it and it works. The quick settings button, as I have mentioned earlier in this thread, is what the sqlite3 executable and the file commands it takes in (just a simple text file of DB commands) take care of. You could also just get sqlite editor ($3 from the play store, IIRC) and do them manually if you don't like command line tools. it's basically adding "WiFiHotspot" to system -> notification_panel_active_app_list_for_reset and notification_panel_default_active_app_list in the settings.db file in /data/data/com.android.providers.settings/databases/
Or you could just do it the free with the command line sqlite3 using the tools already at your disposal

Unable to change folder access permission, even with root

I have found that my LG G5 /sdcard/DCIM has access permission of 0x770. I suspect this is the reason that video files are not visible when I connect it to my PC using MTP mode.
So I tried to change it. First, tried ES File Manager with root turned on and / mounted rw. However, properties of the folder does not have any way to change access permission.
So I installed Terminal Emulator and su to root. chomd 777 does not work -- it reports no error but the result is 771. chmod a+rwx or chmod o+rwx does not work either.
How could I change the permission?
Thanks

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