Database Users

need write to /system or something EXEC path

I was the first person I know on the internet to compile nmap for android and this guy ( http://wjholden.com/nmap/ ) took it to the next level got a new phone ( CM6 with OC ) nbow it does not work
* can't write to /system even with rw remount
* if I boot recovery I can' write to /systm but its just a temp fs so failsause ...
* can't ADB shell (read below ) to find out where system is really mounted OR mount the real /system my self ..
* remouted / but anything I add gets wipped on reboot ...
* onlything that works is remount / , copy nmap and then add PATH hackery to EXEC nmap ... on EVERY reboot ...
NOTES BELOW:
Code:
http://forum.xda-developers.com/showthread.php?t=701589&page=4
I think its because /system is protected in CM5+ ? even with remount
command... ?
let me know what I need to copy where in recovery mode to /system to
get yours to run properly :/
you could also have your installer check for this and have notes etc ..
# uname -a
Linux localhost 2.6.29.6-cyanogenmod #1 PREEMPT Fri Sep 17 16:05:39
PDT 2010 arm v6l GNU/Linux
# ls
ls
NMAP FOR ANDROID CROSS COMPILE ARM.html
NMAP.zip
nmap
nmap-4.01-1.spec
nmap-mac-prefixes
nmap-os-fingerprints
nmap-protocols
nmap-rpc
nmap-service-probes
nmap-services
# cp * /system/bin
cp * /system/bin
cp: can't create '/system/bin/NMAP FOR ANDROID CROSS COMPILE ARM.html': Out of m
emory
cp: can't create '/system/bin/NMAP.zip': Out of memory
cp: can't create '/system/bin/nmap': Out of memory
cp: can't create '/system/bin/nmap-4.01-1.spec': Out of memory
cp: can't create '/system/bin/nmap-mac-prefixes': Out of memory
cp: can't create '/system/bin/nmap-os-fingerprints': Out of memory
cp: can't create '/system/bin/nmap-protocols': Out of memory
cp: can't create '/system/bin/nmap-rpc': Out of memory
cp: can't create '/system/bin/nmap-service-probes': Out of memory
cp: can't create '/system/bin/nmap-services': Out of memory
# df /system
df /system
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/block/mtdblock3 245760 240824 4936 98% /system
# mount
mount
...
/dev/block/mtdblock3 on /system type yaffs2 (rw)
Code:
mount -o rw,remount -t yaffs2 /
rm -Rf /nmap
mkdir /nmap
echo 'export PATH=$PATH:/nmap' > path
cd /nmap
wget http://rmccurdy.com/stuff/G1/BINS/NMAP/NMAP.zip
unzip NMAP.zip
chmod 777 /nmap/*
export PATH=$PATH:/nmap
echo run /nmap/path before you start nmap
nmap -vvv 127.0.0.1
rmccurdy.com/nmap.sh (tested on CM6 / mytouch slide )
in normal mode ..
Code:
bash
localhost / # mount -o rw,remount -t yaffs2 /system
mount -o rw,remount -t yaffs2 /system
localhost / # cd /system
cd /system
localhost system # for i in `ls` ;do mkdir $i\\nmap ;done
for i in `ls` ;do mkdir $i\\nmap ;done
mkdir: can't create directory 'app\nmap': Out of memory
mkdir: can't create directory 'bin\nmap': Out of memory
mkdir: can't create directory 'build.prop\nmap': Out of memory
mkdir: can't create directory 'etc\nmap': Out of memory
mkdir: can't create directory 'fonts\nmap': Out of memory
mkdir: can't create directory 'framework\nmap': Out of memory
mkdir: can't create directory 'lib\nmap': Out of memory
mkdir: can't create directory 'lost+found\nmap': Out of memory
mkdir: can't create directory 'media\nmap': Out of memory
mkdir: can't create directory 'usr\nmap': Out of memory
mkdir: can't create directory 'xbin\nmap': Out of memory
in "Android system recovery (2e)" :
( note: /system is also a vfs I think .. I adb push to it and reboot and the file is gone ... )
Code:
C:\Documents and Settings\Administrator\nmap>adb shell
- exec '/system/bin/sh' failed: No such file or directory (2) -
C:\Documents and Settings\Administrator\nmap>

You can't write in /system in normal boot mode as security is on (s-on), remounting rw does you no good.
In recovery you will need to mount /system from clockwork before you can do anything.

I do have Clockwork Recovery 2.5.0.1 but I am not sure how to get to a shell and or find /system mount path as I can't adb shell ( read above ) so I can't remount or mount /system
rmccurdy.com/nmap.sh * this is what I am using for nmap as of now ..
Usage:
bash -x /sdcard/nmap.sh localhost
etc ...

There's an option in clockwork under partitions to allow you to mount the system. I'm not sure why but a lot of people have an issue getting into su with adb when they are in recovery, the constant /system/bin/sh error is annoying. Also, if I remember right, yaffs2 is not what you use to mount the system when using that command. It's mtdblock3 or something like that if I'm thinking along the correct lines here.
Maybe you should try putting it in a zip file as a script and running it that way since you use a different command (and much easier) to mount the system and write to it. Then again, I'm not sure what you're trying to so so I could just be talking out of my a$$

I can't do anything usefull in recovery ... reboot and apply update.zip but I dont how how nor do I really want to make a .zip / script to mount system etc .. do you know a zip I can work from as an example

rmccurdy said:
I can't do anything usefull in recovery ... reboot and apply update.zip but I dont how how nor do I really want to make a .zip / script to mount system etc .. do you know a zip I can work from as an example
Click to expand...
Click to collapse
The slide doesn't have S-Off, most HTC phones have them now...So you have to wait for Alpharev 2.0 to be released.

Ace42 said:
The slide doesn't have S-Off, most HTC phones have them now...So you have to wait for Alpharev 2.0 to be released.
Click to expand...
Click to collapse
Yes, but in recovery we can mount the system and write to it. Phones with s-off can do that while booted normally because the NAND is unlocked and the system is no longer protected.
You can do it one of two ways. This one is easiest if you know linux commands but are unfamiliar with update-script format. Make an update script and put this in there:
Code:
show_progress 0.5 0
run_program PACKAGE:example.sh
show_progress 0.5 10
You don't have to use the show_progress line, it's just for aesthetics.
Make a .sh script, name it whatever you want and put the linux commands you want to execute in the script. For example:
Code:
#!/sbin/sh
#
##############################################
mount /system;
rm -rf /nmap
mkdir /nmap
echo 'export PATH=$PATH:/nmap' > path
cd /nmap
wget http://rmccurdy.com/stuff/G1/BINS/NMAP/NMAP.zip
unzip NMAP.zip
chmod 777 /nmap/*
export PATH=$PATH:/nmap
echo run /nmap/path before you start nmap
nmap -vvv 127.0.0.1
exit 0;
Or what ever you're trying to get done. I'll upload an example file of all this since hands on is always better. Looking at this though, you may want to have the files in the zip (in the directories they will be installed to) because wget probably wont work since the radio is off while in recovery.

interesting thanks ! ... do you have to resign it and all or can you just edit and rezip it ?

rmccurdy said:
interesting thanks ! ... do you have to resign it and all or can you just edit and rezip it ?
Click to expand...
Click to collapse
As long as you're using clockwork you just edit and zip. Might be easier to use an archive explorer to open (without uzipping it) then drag and drop, but do what's easiest for you.

Terminal command help remount help

I have an Atrix on AT&T. Which means there's a bootloader encryption, and the carrier prevents non-market apk installations, which I have resolved since my phone is rooted and I have changed the boot animation already.
In order to do these things, I found Ghost Commander that would let me chmod my system directories...which is fine, but I feel kind of gimped that I can't do it on terminal.
Basically, what I want to be able to do is remount /system as rw using terminal.
This method doesn't work on both terminal and emulator on my phone. I have done:
Terminal:
Code:
sudo su
cd [sdk directory]
./adb devices
./adb shell
su
mount -o remount,rw -t ext3 /dev/block/mmcblk0p12 /system
and this is where I get stuck because I just get an Invalid argument error.
Here is some info about my sytem -
Usage: mount [-r] [-w] [-o options] [-t type] device directory
/dev/block/mmcblk0p12 /system ext3 ro,noatime,nodiratime, data=ordered 0 0
Been searching for the answers for a while now, and now I'm here. What am I doing wrong? Thanks

there
Code:
mount -o remount,rw /dev/mmcblk0p12 /system
back
Code:
mount -o remount,ro /dev/mmcblk0p12 /system

Hmm, well at least I didn't get any errors this time.
I didn't get a confirmation or that it did anything at all. Is that normal?

Run mount with no parameters and look for the line with that device name, should see rw in that line instead of ro.
Sent from my MB860 using XDA App

Thanks guys, but I resorted to busybox chmod command instead lol

I tried this and got no errors, and using cat /proc/mounts/ I see the path as rw. But when I try to copy I still get the read only file system error.
**Lol, I had the phone in usb storage mode and had to switch it to Windows Media Sync**

[Q] Mount system in adb to read and write on Nexus 7?

Hi guys,
For the Nexus 7, is there a command I can execute in adb shell root to mount the /system/ to enable reading and writing?
For example for the Galaxy Nexus it was...
mount -o rw,remount -t ext4 /dev/block/platform/omap/omap_hsmmc.0/by- name/system /system
What is it for the Nexus 7?
Thanks!

mdrdroid said:
Hi guys,
For the Nexus 7, is there a command I can execute in adb shell root to mount the /system/ to enable reading and writing?
For example for the Galaxy Nexus it was...
mount -o rw,remount -t ext4 /dev/block/platform/omap/omap_hsmmc.0/by- name/system /system
What is it for the Nexus 7?
Thanks!
Click to expand...
Click to collapse
Shot in the dark:
Code:
adb shell
su
mount -o remount rw /system
then, for example, you should be able to do:
Code:
cp /system/build.prop [destination]
cp [source] /system/

cwoggon said:
Shot in the dark:
Code:
adb shell
su
mount -o remount rw /system
then, for example, you should be able to do:
Code:
cp /system/build.prop [destination]
cp [source] /system/
Click to expand...
Click to collapse
Thank you for replying!
I did try your shot in the dark, however when I tried to do a mkdir test for example I still got:
[email protected]:/ # mkdir test
mkdir failed for test, Read-only file system
I believe the format is like:
Usage: mount [-r] [-w] [-o options] [-t type] device directory
But I don't know the specifics. Any thoughts is appreciated!

What I posted above works on my GNex, was /system your active directory when you tried to mkdir?
I would try on my N7, but its ready to be RMA'd...
Code:
[email protected]:/system # mount -o remount rw /system
mount -o remount rw /system
[email protected]:/system # mkdir test
mkdir test
[email protected]:/system # ls
ls
app
bin
build.prop
etc
fonts
framework
lib
media
test
usr
vendor
xbin
[email protected]:/system # rmdir test
rmdir test
[email protected]:/system # ls
ls
app
bin
build.prop
etc
fonts
framework
lib
media
usr
vendor
xbin
[email protected]:/system #

cwoggon said:
What I posted above works on my GNex, was /system your active directory when you tried to mkdir?
I would try on my N7, but its ready to be RMA'd...
Code:
[email protected]:/system # mount -o remount rw /system
mount -o remount rw /system
[email protected]:/system # mkdir test
mkdir test
[email protected]:/system # ls
ls
app
bin
build.prop
etc
fonts
framework
lib
media
test
usr
vendor
xbin
[email protected]:/system # rmdir test
rmdir test
[email protected]:/system # ls
ls
app
bin
build.prop
etc
fonts
framework
lib
media
usr
vendor
xbin
[email protected]:/system #
Click to expand...
Click to collapse
Your advice worked, I over complicated it. I just did this again on my N7 and worked perfectly. Thank you very much!!!

Need help on userinit script.

I want a script that will rename a /system/app on boot in userinit (.d or.sh) in /data/local. This is my first script and was thrilled when I was able to get it to work in SManager. I copied the script to /data/local and renamed to userinit.d. Rebooted, checked the file, not renamed. More research, tried various ways, which also work in SManager, but not as a userinit script. I have included the three ways I have tried with attempt counts and used # on two of them. I didn't use these all at once but included them so you could see what I've tried including a delay o allow time for the "mount" to work. This doesn't work in SManager in boot mode. And returns that it cannot rename because it is ro.
Code:
#!/system/bin/sh
#
#Renames DSPManager.apk to DSPManager.apk.bak
#export PATH=${PATH};/system/bin;/system/xbin
FN=/system/app/DSPManager.apk
if (FN.exists())
then
# attempt one
#busybox mount -o remount,ro -t ext4 /dev/block/mmcblk0p5 /system
# attempt two
#busybox mount -o remount,rw / 2>/dev/null
#busybox mount -o remount,rw rootfs 2>/dev/null
#busybox mount -o remount,rw /system 2>/dev/null
# attempt three
busybox mount -o remount,rw /system
#thread.wait(3000)
mv $FN $FN.bak
busybox mount -o remount,ro /system
#thread.wait(3000)
#
#busybox mount -o remount,ro -t ext4 /dev/block/mmcblk0p5 /system
#
#busybox mount -o remount,ro / 2>/dev/null
#busybox mount -o remount,ro rootfs 2>/dev/null
#busybox mount -o remount,ro /system 2>/dev/null
fi
Maybe I'm trying more than the userinit is supposed to do. I want this to survive and do its thing after Nightly updates. I use Speaker boost for volume and don't want DSPmanager taking extra memory.

Two things, first make sure you are using a root file manager and have set the directory to rw. Second, if you want the file to execute in /data/local you must name it userinit.sh and set the permissions of the file for execute. Or you can create a folder named userinit.d in /data/local and put multiple script files in that folder. Each script file must have its permission set to execute. To understand this, look at the contents of /etc/init.d/90userint.
Sent from my BN NookHD+ using XDA Premium HD app

leapinlar said:
Two things, first make sure you are using a root file manager and have set the directory to rw. Second, if you want the file to execute in /data/local you must name it userinit.sh and set the permissions of the file for execute. Or you can create a folder named userinit.d in /data/local and put multiple script files in that folder. Each script file must have its permission set to execute. To understand this, look at the contents of /etc/init.d/90userint.
Sent from my BN NookHD+ using XDA Premium HD app
Click to expand...
Click to collapse
I have the file permissions set to rwxr-xr-x (755) as well as the folder userinit.d set to the same. I have been using either Speed software's Root explorer (prefered) or Jrummy's Root Browser. I have named the script in the userinit.d folder "90RnamDSP". Again I can run the script in the root browser as a script and it renames the file. After set the file name back to the .apk I reboot, check in the /system/app and the file is not renamed. I have given the specific script I am using in the userinit.d folder.
Code:
#!/system/bin/sh
#
#Renames DSPManager.apk to DSPManager.apk.bak
path=/system/bin:/system/xbin;
FN=/system/app/DSPManager.apk;
if [ -e $fn];
then
busybox mount -o remount,rw -t /dev/block/mmcblk0p5 /system;
sleep 5;
mv $FN $FN.bak;
busybox mount -o remount,ro -t /dev/block/mmcblk0p5 /system;
fi;

You have the mount commands wrong for a userinit script. It should be:
mount -o remount,rw /system
and
mount -o remount,ro /system
And you don't need the path statement. You don't need the busybox in front of mount either. And shouldn't $fn be capitalized in the if statement?
Sent from my BN NookHD+ using XDA Premium HD app

Yippee, Yahoo, it works
leapinlar said:
You have the mount commands wrong for a userinit script. It should be:
mount -o remount,rw /system
and
mount -o remount,ro /system
And you don't need the path statement. You don't need the busybox in front of mount either. And shouldn't $fn be capitalized in the if statement?
Sent from my BN NookHD+ using XDA Premium HD app
Click to expand...
Click to collapse
Thanks for your help and patience. Didn't need the sleep either. I will be posting this on my help post noted in my signature below. I will give you thanks there as well. Couple of final questions.
Can you recommend a how to script reference ie: init script for dummies?
Can you recommend a how to make an install zip and install script, (again for the untrained)?
I have included the final code to maybe help someone trying to do something similar.
Code:
#!/system/bin/sh
#
#Renames DSPManager.apk to DSPManager.apk.bak
FN=/system/app/DSPManager.apk;
if [ -e $FN ];
then
mount -o remount,rw /system;
mv $FN $FN.bak;
mount -o remount,ro /system;
fi;

pastordl said:
Thanks for your help and patience. Didn't need the sleep either. I will be posting this on my help post noted in my signature below. I will give you thanks there as well. Couple of final questions.
Can you recommend a how to script reference ie: init script for dummies?
Can you recommend a how to make an install zip and install script, (again for the untrained)?
I have included the final code to maybe help someone trying to do something similar.
Code:
#!/system/bin/sh
#
#Renames DSPManager.apk to DSPManager.apk.bak
FN=/system/app/DSPManager.apk;
if [ -e $FN ];
then
mount -o remount,rw /system;
mv $FN $FN.bak;
mount -o remount,ro /system;
fi;
Click to expand...
Click to collapse
I don't know of any how-to's for those topics. I learned by studying examples of how others did them.
Sent from my SCH-i705 using Tapatalk

leapinlar said:
I don't know of any how-to's for those topics. I learned by studying examples of how others did them.
Sent from my SCH-i705 using Tapatalk
Click to expand...
Click to collapse
Thank you again. This script and a second one that adds the folder and the script are available at this post.
http://forum.xda-developers.com/showpost.php?p=50795653&postcount=6
I was able to make and debug the installer in a couple of hours. I thanked you in the post also.
The post is part of the help/info/reference post that I asked your permission to list your help files on.

[Q] Mounting & Changing Permissions Using Terminal Emulator on Android Phone

How to properly MOUNT the system so I can change its permission? (USING TERMINAL EMULATOR)
I know the first command for it (mount) (I dont know what command follows)
Because I need to first mount the system before changing permissions.
How to change permissions for a system app (for example SystemUI.apk)? After doing some changes into my SystemUI.apk, I push it into my system and it has different permissions.
I want to change its permission into rw-r--r

In the emulator:
Code:
$ su
# mount -o remount,rw /system
# chmod 0644 /system/app/SystemUI.apk
or:
Code:
$ su
# cd system/app
# mount -o remount,rw /system
# chmod 0644 SystemUI.apk

- What does the "0" in 0644 stands for?
Can you elaborate how that mount works so I can properly use it.
mount -o (what this for) remount (and this) ,rw (this also) /system(its the directory, the one I understand)

klmiciano said:
- What does the "0" in 0644 stands for?
Can you elaborate how that mount works so I can properly use it.
mount -o (what this for) remount (and this) ,rw (this also) /system(its the directory, the one I understand)
Click to expand...
Click to collapse
Permissions for system files go beyond simply rw-r-r. Since Android is essentially Linux, Linux permissions do exist in Android. Alongside the Owner, Group and Other permissions, of which you set rw, r and r respectively, special permissions which are the Sticky bit, GID and UID exist as well. However, since these special permissions are not required for the functioning of Android, the 0 in 0644 is to disable all three of them.
-o in mount is essentially a flag. Flags are options to obtain different outcomes for each command. For example,
Code:
ls -s
not only lists the files in the current directory, but also lists the files' sizes in kB. I am not sure about -o in this case, however.
Remounting is required as your system is already a mounted filesystem, but as read-only (ro). Hence you have to remount it as read-write (rw), in order to change the properties of its files.

This is some good stuff. I need to learn more.
The last time I use the chmod command. I didn't include the '0'. I've only type
chmod 644 (blahblah)
Btw, Thank you for teaching me this stuff.
More power.:laugh:

NightRaven49 said:
Permissions for system files go beyond simply rw-r-r. Since Android is essentially Linux, Linux permissions do exist in Android. Alongside the Owner, Group and Other permissions, of which you set rw, r and r respectively, special permissions which are the Sticky bit, GID and UID exist as well. However, since these special permissions are not required for the functioning of Android, the 0 in 0644 is to disable all three of them.
-o in mount is essentially a flag. Flags are options to obtain different outcomes for each command. For example,
Code:
ls -s
not only lists the files in the current directory, but also lists the files' sizes in kB. I am not sure about -o in this case, however.
Remounting is required as your system is already a mounted filesystem, but as read-only (ro). Hence you have to remount it as read-write (rw), in order to change the properties of its files.
Click to expand...
Click to collapse
This guide probably helped me as well