Database Users

Debian Lenny on Droid Eris [02/14/2010 - WORKING! mjgdroid completed!!]

EDIT [02/14/2010]: Please see mjgdroids FINISHED PORT HERE.Make sure to thank him and/or donate to mjgdroid.
EDIT: MAKE SURE YOUR ROM SUPPORTS PARTITIONS ON YOUR SD! YOU CAN USUALLY FIND THIS INFO IN YOUR ROMS FAQ.
I'm currently looking for a work-around. Mounting EXT3 still works in the rooted terminal, but that doesn't help Android see your FAT partition.
Here it is folks, working instructions to get Debian Lenny running on your Droid Eris! I say that it's 90% complete because I do not yet have fully functioning MeeGo, I hope to resolve the issue sometime this weekend. Otherwise, all is well. I'm releasing the instructions so that others in the community can contribute.
Thanks to ban_dover for a lot of initial work. For author credit, other contributions, and the original thread leading up to my fix, see http://forum.xda-developers.com/showthread.php?t=748094. If there is ANYONE else who needs to be credited here, PLEASE pm me and I'll edit this post.
Also, if you're wondering "Why Debian Lenny?" it was readily available and already set up for ARMv5 and up. There are also available MeeGo binaries for Lenny. WOOHOO! Everybody's life is easier.
EDIT: I've released what I consider to be an unstable/incomplete RAW image. I will not link to unstable images in this post, you can download it on page 2 of thread. This image can be used to skip both step 1 and converting the image from QCOW to RAW.
1. Create ARM image containing Debian Lenny
In Linux command line
- Download Debian ARM Installer
wget http://ftp.de.debian.org/debian/dis...el/current/images/versatile/netboot/initrd.gz
wget http://ftp.de.debian.org/debian/dis.../versatile/netboot/vmlinuz-2.6.26-2-versatile
- Create disk image
qemu-img create -f qcow deb-arm.img 4G
- Run QEMU VM to run Debian ARM Installer
qemu-system-arm -M versatilepb -kernel vmlinuz-2.6.26-2-versatile -hda deb-arm.img -initrd initrd.gz -append "root=/dev/ram" -m 256
- In Debian installer, follow prompts
I chose the following user access, root-pass:debian91, user:debian and pass:debian91
Install desired defaults. I initially went with desktop environment; core environment may be best for MeeGo
- Reboot VM ONCE to permit it to statisfy any changed dependencies
2. Create filesystem on phone and copy Lenny
In Linux SUPER-USER command line
- Backup SDCARD if necessary
- Enter superuser mode
"sudo sh" or "sudo bash"
- Partition SDCARD
Use partition editor of choice (I used GParted)
FAT must be first partition
Create second partition as ext3
- Mount EXT3 partition
mkdir sd
mount -t ext3 /dev/sdb2 sd
- Convert QCOW image to RAW image
qemu-img convert deb-arm.img -O raw deb-arm.raw
- Mount RAW image as loop
mkdir image
mount -t ext3 deb-arm.raw image -o loop,offset=32256
- Copy image contents to EXT3 partition on SDCARD
cp -r image/* sd
- Unmount both SDCARD and RAW image
- umount deb-arm.raw && umount /dev/sdb2
3. Bind necessary nodes and create chroot jail
In eiter ADB shell or in rooted phone command line (either method MUST BE SUPERUSER!!!)
- Enter superuser mode
"su" (make sure to accept and remember if asked on rooted phone; also not sure how to superuser in ADB shell)
(NOTE: The folowing commands should use "busybox" as a prefix if using ADB shell in terminal)
- Mount EXT3 partition (should be /dev/block/mmcblk0p2)
mkdir /data/local/debian
mount -t ext3 /dev/block/mmcblk0p2 /data/local/debian
- Bind the necessary nodes
mount --bind /dev/pts /data/local/debian/dev/pts
mount --bind /proc /data/local/debian/proc
mount --bind /sys /data/local/debian/sys
sysctl -w net.ipv4.ip_forward=1
- Enter into Debian system
chroot /data/local/debian /bin/bash
4. Installing MeeGo and opening an Xsession through VNC
- COMING SOON!! (like, over the weekend)
EDIT: MINOR SETBACK DUE TO FROYO NOT SUPPORTING PARTITIONED SDCARDS. WORKING WITH DEVS TO RESOLVE.
Connecting chroot to VNC
Running MeeGo environment
- Why Not Now
Finding the best way to get an xserver on Android... possibly without VNC
Seeing which is better, install MeeGo before copying to SDCARD, or after
- Possible future: adapting Lenny to favorite distro flavor
- This would take a lot more of my time, and those who want to convert it to ubuntu can google it more easily

Information Sources
This is a list of articles that I've gleaned my info from.
Debian Lenny ARM on Qemu
http://www.debian.org/releases/stable/installmanual
http://www.finalcog.com/howto-install-debian-lenny-arm-qemu-ubuntu-jaunty
http://kevin.deldycke.com/2007/04/how-to-grow-any-qemu-system-image/
Chrooting Troubleshooting
http://forum.xda-developers.com/showthread.php?t=748094
http://forums.dlink.com/index.php?topic=6073.0;wap2 (helpful in determining why nexus one and incredible images wouldn't chroot)
https://help.ubuntu.com/community/BasicChroot
http://forums.gentoo.org/viewtopic-t-470306-start-0.html
Inspiration
http://bayleshanks.com/wiki.pl?tips-computer-android-g1_debian_cyanogenMod
Most of the G1 development on XDA
http://androidforums.com/incredible-all-things-root/120622-how-run-ubuntu-droid-incredible.html

Very cool, good job.

very nice indeed!

Thanks guys.

I've always wanted to ask but thought it might offend someone. In any case, what will this enable us to do that we couldn't do already?
Sent from my FroyoEris using XDA App

xnatex21 said:
I've always wanted to ask but thought it might offend someone. In any case, what will this enable us to do that we couldn't do already?
Sent from my FroyoEris using XDA App
Click to expand...
Click to collapse
My thoughts exactly, I have no idea what's being said here.

Sweet! Nice work.

korben dallas said:
My thoughts exactly, I have no idea what's being said here.
Click to expand...
Click to collapse
Hmm... I sometimes fall on the answer that its obvious. Let me give a few reasons why I did it. Other than "it is fun for me."
1. Because we can, lol
2. It opens potentially the full gamut of available Linux software that wouldn't otherwise run (unless ported)
3. Broadened capability means wider choice
4. Unknown territory (at least for Eris users) provides new frontiers
I like these answers, three out of four also sum up why open source exists.

Very nice man. Got any screens?

Nikolai2.1 said:
Very nice man. Got any screens?
Click to expand...
Click to collapse
Right now, my camera is my eris. I'll get somebody to take either video or some pics this weekend so y'all can see it in action.

Could anybody create an image and upload it I just spent the last 4 hours waiting for debian to install inside qemu only for it to hang right before the end lol. Needless to say I just want to experiment with it but I don't really want to do that again or risk it hanging again.

Running X from Chroot
OK, so I was sitting around on break and it hit me that Debian Lenny has the Gnome Mobile desktop designed for touch interfaces in its repositories. The project is called Hildon and was the basis for Maemo before it became MeeGo. Voila, debian gui solved.
Then I remembered an article I'd read while in college on running X from within a chroot jail. I love google; I took a look around for it and found it: http://norman.walsh.name/2003/08/22/chroot. Bingo! We may not need VNC to get graphical output.
In short, my free time is going to consist of installing Hildon in Lenny and writing a script to bind the proper directories, descend into chroot and run X.
It's interesting to note a few things. I read on a few boards that android doesn't have it's own Xserver. Historically, chroot was used for testing purposes to ensure that a system could run on the existing kernel/hardware/etc. Well, in Debian Lenny we have an xserver and its dependencies compiled to run on ARMv5 and up. So technically if we can get X to run from chroot with the proper bindings, then we can get that SAME xserver to run directly on Android. Further, the ability to run Debian in chroot directly implies that the same software will run outside of chroot.
And one speculation: it would be an interesting experiment to see if these tools could be run side-by-side with the default Android rom. To any devs familiar with Android roms, does that sound overly ambitious?

AcidRoot said:
Could anybody create an image and upload it I just spent the last 4 hours waiting for debian to install inside qemu only for it to hang right before the end lol. Needless to say I just want to experiment with it but I don't really want to do that again or risk it hanging again.
Click to expand...
Click to collapse
Hey AcidRoot! I give no guarantees as I mentioned I'm still working out kinks, but I can upload my image. I'll compress it, upload it, and edit this post with a link to it.
My current image of Debian Lenny ARMv5 is available here. I'm not posting the link in the first post because this image does not constitute what I'd call stable and complete, just so you're forewarned.

composerdude said:
Hey AcidRoot! I give no guarantees as I mentioned I'm still working out kinks, but I can upload my image. I'll compress it, upload it, and edit this post with a link to it.
My current image of Debian Lenny ARMv5 is available here. I'm not posting the link in the first post because this image does not constitute what I'd call stable and complete, just so you're forewarned.
Click to expand...
Click to collapse
Thanks alot I know the risks I just want to experiment with it.

One of the kinks that would be immediately noticed is that paths to executable directories are not set. When chroot into /data/local/debian, make sure that one of the first things you do is change the path variable.
Code:
PATH=/usr:/bin/:usr/local/bin:.

oman def going to try this later on tonight... sounds GREAT

What is this exactly?

Awesome work man! I've been following this in ban_dovers thread. I just needed to comment here so it'll show up in my "participated" folder on my xda app.
I'll be lurking and waiting for something more stable and noob friendly. Keep up the great work.
Sent from my nonsensikal froyo using XDA App

@joshw0000: Thanks for the encouragement!
@EVERYBODY: I just discovered today after updating Tazz Froyo to the latest version that updates to CM6 have aparently broken support for partitioned SD cards. I am looking for a work-around before working out more kinks. My istructions still work, it's just that ANDROID sees a blank SD, even though partitions can still be mounted to run Debian. Anyone testing, check your FAQs to make sure partitions are supported. I'll keep you posted on my end.

Thread closed.

Thread closed.

Thread closed.

Yank555 said:
Hi,
REMEMBER
FIRST OF ALL, do a Nandroid backup, as well as a backup of your sd-card content !
You're doing this at your very own risk, I'm not to be held responsible if something goes wrong
Now that said, let's get going
In case somebody wants to check it out, here is the swap activation script I wrote (attached) as well as explanations on how to make it all work :
1) Partition your sd-card (Minitool Partition Wizard, 4ext, CWM...)
2) Boot your system with the partitionned sd-card
3) If necessary customize the 99swap script (attached to this post) and then put it onto your sd-card's root folder, you'll need it while executing the commands in step 4.
4) Open a terminal and type the following
NB: Change "mkswap /dev/block/mmcblk0p3" accordingly to point to the swap partition you've created in step 1.
5) Reboot your phone, start a terminal again and type free, you'll need to see something different than 0 in your swap line, look at the attached print-screen
Swappiness will be set to 50 by the script, which is a rather conservative swap use, made sense to me since SD-swap is slower than ram, better not to use it too agressively. Feel free to experiment with the swappiness variable in the script (values between 0 and 100, 0 meaning "try not to swap", 100 meaning "try to swap all the time")
If you want to try and have a question, just let me know !
JP.
PS: You can find the thread for hard swap for the htc Sensation / XE here.
Click to expand...
Click to collapse
Hi JP,
This is a gem of a post! Thanks alot for the script and the detailed breakdown. Before I get into it though, I must warn you that I am more of a beginner with no coding/scripting experience (I don't know how to use adb or anything)...
Here's what I'm trying to do: I'm trying to activate hard-swap on my hd2 (currently) running the ParanoidAndroid by Xylograph. I've created 3 partitions on my 16gb class 6 sd card: first, fat32 (32k cluster), next, 1GB ext2 (default), 500MB swap.
Procedure:
1. I extracted the script and copied it directly to system/etc/init.d folder of the Rom (I looked at the terminal commands you posted and the first few lines looked like copying the file from the sd root to the init.d folder (it was just a guess though), so I figured might as well put it into the rom before I flash it)
2. Flashed the rom
3. To activate it, I typed the following into the terminal:
su
mount -o remount,rw /system
mkswap /dev/block/mmcblk0p3
mount -o remount,ro /system
exit
after the mkswap command, I did get an activation notification that a certain amount was assigned to swap. But my celebrations were cut short after I rebooted and used the free command to check. The entire swap row still read 0.
I was wondering if you can point me in the right direction... thanks!
Also, is there a way to create a cwm flashable version?

bullcrapr said:
Hi JP,
This is a gem of a post! Thanks alot for the script and the detailed breakdown. Before I get into it though, I must warn you that I am more of a beginner with no coding/scripting experience (I don't know how to use adb or anything)...
Here's what I'm trying to do: I'm trying to activate hard-swap on my hd2 (currently) running the ParanoidAndroid by Xylograph. I've created 3 partitions on my 16gb class 6 sd card: first, fat32 (32k cluster), next, 1GB ext2 (default), 500MB swap.
Procedure:
1. I extracted the script and copied it directly to system/etc/init.d folder of the Rom (I looked at the terminal commands you posted and the first few lines looked like copying the file from the sd root to the init.d folder (it was just a guess though), so I figured might as well put it into the rom before I flash it)
2. Flashed the rom
3. To activate it, I typed the following into the terminal:
su
mount -o remount,rw /system
mkswap /dev/block/mmcblk0p3
mount -o remount,ro /system
exit
after the mkswap command, I did get an activation notification that a certain amount was assigned to swap. But my celebrations were cut short after I rebooted and used the free command to check. The entire swap row still read 0.
I was wondering if you can point me in the right direction... thanks!
Also, is there a way to create a cwm flashable version?
Click to expand...
Click to collapse
Thanx
In fact you understood correctly that is was about copying the file to init.d.
By the way, these commands do the following :
mount -o remount,rw /system - Mount system partition in read-write
mount -o remount,ro /system - Mount system partition in read-only
So to format the swap partition "mkswap /dev/block/mmcblk0p3" there was no need for it, but it didn't harm in any way, so you're fine there
I guess what is missing is the "chmod 755 /system/etc/init.d/99swap" command which will set the correct file access to the script so it can get executed at boot.
You might do the following in a terminal :
su
mount -o remount,rw /system
chmod 755 /system/etc/init.d/99swap
mount -o remount,ro /system
exit
It should be fine then.
Alternatively you could set the rights with your file explorer (in root explorer mode), they must be "rwxr-xr-x" (which is Read-Write-Execute, Read-Execute, Read-Execute), most file-manager will allow you to do that as well.
I've been working on the script variant for htc Sensation, it is more advanced, dynamic so it can find the swap partition by itself.
I'll make a CWM flashable as soon as I get to it that will handle everything except partitioning the SD card, obviously, for both devices.
As soon as I'm done I'll post the HD2 version here as well (very little change, between both devices, just the access path to the sd-card partitons to change (=1 line in the script).
JP.
Edit ------------------------------------------------
I just reread your post, if in fact you put it into the ROM zipfile, then file access should be correct !?
Could you post the following file (if it exists) :
/data/swap.0.log ?
JP.

Yank555 said:
Thanx
In fact you understood correctly that is was about copying the file to init.d.
By the way, these commands do the following :
mount -o remount,rw /system - Mount system partition in read-write
mount -o remount,ro /system - Mount system partition in read-only
So to format the swap partition "mkswap /dev/block/mmcblk0p3" there was no need for it, but it didn't harm in any way, so you're fine there
I guess what is missing is the "chmod 755 /system/etc/init.d/99swap" command which will set the correct file access to the script so it can get executed at boot.
You might do the following in a terminal :
su
mount -o remount,rw /system
chmod 755 /system/etc/init.d/99swap
mount -o remount,ro /system
exit
It should be fine then.
Alternatively you could set the rights with your file explorer (in root explorer mode), they must be "rwxr-xr-x" (which is Read-Write-Execute, Read-Execute, Read-Execute), most file-manager will allow you to do that as well.
I've been working on the script variant for htc Sensation, it is more advanced, dynamic so it can find the swap partition by itself.
I'll make a CWM flashable as soon as I get to it that will handle everything except partitioning the SD card, obviously, for both devices.
As soon as I'm done I'll post the HD2 version here as well (very little change, between both devices, just the access path to the sd-card partitons to change (=1 line in the script).
JP.
Edit ------------------------------------------------
I just reread your post, if in fact you put it into the ROM zipfile, then file access should be correct !?
Could you post the following file (if it exists) :
/data/swap.0.log ?
JP.
Click to expand...
Click to collapse
Hi JP
You are incredibly helpful and I appreciate it!
I finally got some time off and tried out what you mentioned... but to no avail. I applied the necessary permissions through the terminal (chmod 755) as well as through the root browser, but it was still the same. After that I even retried the terminal commands, and included the "chown 0:2000...", but that didn't work either...
... and then I saw your post update...
About that, i just typed it into the terminal, and I got "not found".
Was that what I was supposed to do?

bullcrapr said:
Hi JP
You are incredibly helpful and I appreciate it!
I finally got some time off and tried out what you mentioned... but to no avail. I applied the necessary permissions through the terminal (chmod 755) as well as through the root browser, but it was still the same. After that I even retried the terminal commands, and included the "chown 0:2000...", but that didn't work either...
... and then I saw your post update...
About that, i just typed it into the terminal, and I got "not found".
Was that what I was supposed to do?
Click to expand...
Click to collapse
Hi,
You're welcome
The file '/data/swap.0.log' is a text-file containing info on the execution of the script...
If it's not there, then the script didn't run at all...
I should have a little time later today, will try to make the CWM flashable solution for you, should be a no fuss solution, as long as the sd-card has a swap partition
How did you partition the card ? CWM ?
JP.
Sent from my Android Revolution HD 6.6.5 XE / faux kernel 007b3 powered htc Sensation XE using xda premium

I created a 256Gb partition...
Click to expand...
Click to collapse
man thats a helluva sd card ya have there! hehe.

samsamuel said:
man thats a helluva sd card ya have there! hehe.
Click to expand...
Click to collapse
Haha I noticed that too :') I want one of those now

Nigeldg said:
Haha I noticed that too :') I want one of those now
Click to expand...
Click to collapse
Thanx for pointing that out Mb of course, but in a few years that might be possible
My first hdd had 60Mb, and that's not soooo long ago
JP.
Sent from my Android Revolution HD 6.6.5 XE / faux kernel 007b3 powered htc Sensation XE using xda premium

heh, my first was a 20mb HDD mounted on a pcb card and plugged into an ISA slot, took up the full length of the PC, weighed LOADS, could have beaten burglars to death with it.

bullcrapr said:
Hi JP
You are incredibly helpful and I appreciate it!
I finally got some time off and tried out what you mentioned... but to no avail. I applied the necessary permissions through the terminal (chmod 755) as well as through the root browser, but it was still the same. After that I even retried the terminal commands, and included the "chown 0:2000...", but that didn't work either...
... and then I saw your post update...
About that, i just typed it into the terminal, and I got "not found".
Was that what I was supposed to do?
Click to expand...
Click to collapse
+1 with this (also on Paranoid Rom 1.1a) but I think that it's something with the ROM coz on earlier build v1 this method worked verry good I hope that Yank will find a solution coz it reallly helps wit our 576 ram

samsamuel said:
heh, my first was a 20mb HDD mounted on a pcb card and plugged into an ISA slot, took up the full length of the PC, weighed LOADS, could have beaten burglars to death with it.
Click to expand...
Click to collapse
Mine was huge at the time, was on of the first to have such a big one, even partitioned it into 3 since it was just too big And it was an external device, the size of a pizza-box (it was en Atari Megafile 60, I still have it !!).

triggaz said:
+1 with this (also on Paranoid Rom 1.1a) but I think that it's something with the ROM coz on earlier build v1 this method worked verry good I hope that Yank will find a solution coz it reallly helps wit our 576 ram
Click to expand...
Click to collapse
I'm working on the CWM flashable right now, should be done within 1-2 hours at most

Yank555 said:
Hi,
You're welcome
The file '/data/swap.0.log' is a text-file containing info on the execution of the script...
If it's not there, then the script didn't run at all...
I should have a little time later today, will try to make the CWM flashable solution for you, should be a no fuss solution, as long as the sd-card has a swap partition
How did you partition the card ? CWM ?
JP.
Sent from my Android Revolution HD 6.6.5 XE / faux kernel 007b3 powered htc Sensation XE using xda premium
Click to expand...
Click to collapse
Hi JP, once you told me it was the address to the file, i just navigated there using my explorer and lo and behold!, there it was (attached). If you must know, in my earlier post, the idiot in me just typed it in the terminal and the terminal replied not found.
I made my partition using freeware called Minitool partition wizard. Is 500mb too big for swap in your opinion? I was thinking of compensating for zram, and hence the size... thanks for your speedy responses...
edit...
and hey! whadya know? in the meantime, this place is coming alive!!

bullcrapr said:
Hi JP, once you told me it was the address to the file, i just navigated there using my explorer and lo and behold!, there it was (attached). If you must know, in my earlier post, the idiot in me just typed it in the terminal and the terminal replied not found.
I made my partition using freeware called Minitool partition wizard. Is 500mb too big for swap in your opinion? I was thinking of compensating for zram, and hence the size... thanks for your speedy responses...
edit...
and hey! whadya know? in the meantime, this place is coming alive!!
Click to expand...
Click to collapse
Hmm ... strange, the content of the file looks like a logcat ?! Not what I was expecting to see
Give me a little hour, and I think I should be done with the flashable hard-swap and we'll go from there
Minitool is excellent, but did you pay attention to only create "primary" partition ? If it is a logical partition it won't work...
Can you insert your SD card into your card reader, start Minitool an post a print screen of it ?
JP.
EDIT :
About size ... I believe 256Mb is enough, even read somewhere t shouldn't be more than 256, but I think there was no specific reason given.

Yank555 said:
Hmm ... strange, the content of the file looks like a logcat ?! Not what I was expecting to see
Give me a little hour, and I think I should be done with the flashable hard-swap and we'll go from there
Minitool is excellent, but did you pay attention to only create "primary" partition ? If it is a logical partition it won't work...
Can you insert your SD card into your card reader, start Minitool an post a print screen of it ?
JP.
EDIT :
About size ... I believe 256Mb is enough, even read somewhere t shouldn't be more than 256, but I think there was no specific reason given.
Click to expand...
Click to collapse
Here we go...
Minitool image attached... I typically pay attention to the partition type and made sure both of them were primary
About the logcat, I suspect you're right... I was trying to do one from my pc for the first time using adb and tried the only few commands I know (mkswap...), I think that's what you saw then...
Incidentally, do you feel if I reduce the swap size, the script has a better chance at surviving the boot?

bullcrapr said:
Here we go...
Minitool image attached... I typically pay attention to the partition type and made sure both of them were primary
About the logcat, I suspect you're right... I was trying to do one from my pc for the first time using adb and tried the only few commands I know (mkswap...), I think that's what you saw then...
Incidentally, do you feel if I reduce the swap size, the script has a better chance at surviving the boot?
Click to expand...
Click to collapse
Don't bother, I will test 500Mb and let you know if that is the issue
JP.

I have 512mb partition and it worked without problems as I mentioned earlier so I think that opposite to the "size does matter" in this case it doesn't plus I used it with zram from marc1706.

triggaz said:
I have 512mb partition and it worked without problems as I mentioned earlier so I think that opposite to the "size does matter" in this case it doesn't plus I used it with zram from marc1706.
Click to expand...
Click to collapse
Hi triggaz, are you using the built in zram on Para1.1a? Or have you applied a script from elsewhere? I enabled the built-in zram, but get a "not found" reply when i try zram_stats in the terminal. Can you tell me how you got zram working? thanks...

bullcrapr said:
Hi triggaz, are you using the built in zram on Para1.1a? Or have you applied a script from elsewhere? I enabled the built-in zram, but get a "not found" reply when i try zram_stats in the terminal. Can you tell me how you got zram working? thanks...
Click to expand...
Click to collapse
https://www.dropbox.com/s/xr3z102gxiw2f62/marc1706_zram_100MB.zip
all credits to Dorimanx for ZRAM mod and mark1706 for modifications
I flashed this and then used the compcashe options in Paranoid (set to 26%)

[Q] ROM porting

Edit: bootloop, partitions are not mounting.

nagato.fm said:
I'm trying to port an X5PRO rom to regular X5 and facing an issue of unworking wi-fi and USB mass-storage. All data I have: it's all right with IMEI, wi-fi and bluetoth MAC's are missing, serial number is missing, wi-fi toggle in settings is inactive (I mean it can't be turned on and if I try to turn it on directly from wi-fi settings it says "an error occured" and goes inactive again), when I'm connecting my phone to computer and trying to turn on storage I get message of dismounting SD card and the storage stays turned off.
I've already tried to change the kernel (this ROM is running 3.0.8 PRO kernel and I've used Dzo's v5.0u17 kernel) and it haven't fixed my problems. Changing of /system/libs/hw/ to the Aurora's resulted in non-bootable rom.
Have you any ideas of how to solve it? Or is there any threads about x5pro to non-pro porting I could miss? (I've tried to google anything about problems with my port and about porting from U8800PRO and found... nothing)
Click to expand...
Click to collapse
I have no ideal to give you because i'm not a DEV, but in the whole 4rum, you can easy find out the solution to help you.
http://forum.xda-developers.com/showthread.php?t=1941239

Those so called tutorials are pretty much useless, they will help you get the base on, but no more.
So, since U8800+ has a different Wi-Fi, you should first replace /system/lib/libhardware_legacy.so, /system/bin/wpa_supplicant with the dzo ones. Then copy over the /system/lib/modules directory, it contains Wi-Fi modules needed.
If it does not work out, try to modify the init.huawei.rc or init.rc and replace service wpa_supplicant and related configs with dzo ones. Note that you will have to modify boot.img, because it contains the init files. So use a boot.img unpacker, modify it, then repack it again.
Try to get me the logs too .

Blefish said:
Those so called tutorials are pretty much useless, they will help you get the base on, but no more.
So, since U8800+ has a different Wi-Fi, you should first replace /system/lib/libhardware_legacy.so, /system/bin/wpa_supplicant with the dzo ones. Then copy over the /system/lib/modules directory, it contains Wi-Fi modules needed.
If it does not work out, try to modify the init.huawei.rc or init.rc and replace service wpa_supplicant and related configs with dzo ones. Note that you will have to modify boot.img, because it contains the init files. So use a boot.img unpacker, modify it, then repack it again.
Try to get me the logs too .
Click to expand...
Click to collapse
The problem is that I've changed the kernel using abootimg package in Ubuntu because none of the scripts for unpacking/repacking boot.img found on this forum worked for me, also I couldn't unpack ramdisk so I think I can't modify init.rc at this moment. I'll try to get some logs and do all that you've mentioned.
Also there is another problem: no mobile network at all. When I turn on the phone the indicator goes gray and nothing seems working (can't phone someone and etc.). When trying to change mobile operator via settings I get a VERY strange menu asking me for PIN code (I actually don't have one - I've disabled it years ago).
Also I need to ask for some tutorials or knowledge bases about how android works and how core parts of android work (I mean EVERYTHING I can get) because I actually don't know ANYTHING about android and there's no noob-friendly tutorials or FAQ's over the internet. I've checked xda-university and it didn't helped either.
Anyway thanks for your help, Blefish!

After following your instructions system hangs on boot. When first flashed it started to "updating android:setting applications..." and then it rebooted. Then it said "updating... 1 of 1" and another reboot. Seems like framework-res isn't starting because it hangs on bootanimation and hardware buttons lights are constantly flashing. Installing SDK now, will try to get some logs.

Try to do it step-by-step so first replace one thing, reboot, then try another. That will help us understand what makes the phone hang.
For modifying kernel or init.rc I attatched boot.img unpacker-repacker with README, check it out. I am not sure if you need a Linux box for it, but I use that tool and it works well.

MIUI-XJ (my ROM) is a ported u800pro ROM. But it is a gingerbread ROM.
First of all,you need change all init files in /system. You can found this files in system/etc (example;init.qcom.wifi.sh).And I think the mass stroage problem causing by init.qcom.usb.rc (It can found in boot.img) but I'm not sure.
You should change gralloc files for a better GPU performance. It can found in systen/lib/hw. I think You don't need change other hw files.
u8800 needs system/bin/netd - system/lib/modules/*(anything in this folder) - system/bin/wpa_supplicant - system/lib/liboem_rapi.so - system/lib/libreference-ril.so - system/lib/libhardware_legacy.so - system/etc/init.qcom.wifi.sh - system/etc/firmware/wlan/*(anything in this folder) for turn on WiFi
and also u8800 needs system/etc/init.qcom.bt.sh - system/bin/hci_qcomm_init - system/bin/qmuxd (I'm not sure about this file) - system/bin/sdptool - system/bin/hciattach for turn on BT
And also,you need change init.rc and init.huawei.rc files in boot.img for turn on WiFi and BT.

forumber2 said:
MIUI-XJ (my ROM) is a ported u800pro ROM. But it is a gingerbread ROM.
First of all,you need change all init files in /system. You can found this files in system/etc (example;init.qcom.wifi.sh).And I think the mass stroage problem causing by init.qcom.usb.rc (It can found in boot.img) but I'm not sure.
You should change gralloc files for a better GPU performance. It can found in systen/lib/hw. I think You don't need change other hw files.
u8800 needs system/bin/netd - system/lib/modules/*(anything in this folder) - system/bin/wpa_supplicant - system/lib/liboem_rapi.so - system/lib/libreference-ril.so - system/lib/libhardware_legacy.so - system/etc/init.qcom.wifi.sh - system/etc/firmware/wlan/*(anything in this folder) for turn on WiFi
and also u8800 needs system/etc/init.qcom.bt.sh - system/bin/hci_qcomm_init - system/bin/qmuxd (I'm not sure about this file) - system/bin/sdptool - system/bin/hciattach for turn on BT
And also,you need change init.rc and init.huawei.rc files in boot.img for turn on WiFi and BT.
Click to expand...
Click to collapse
Thanks a lot! Will try it all now!

Okey, now it's a bootloop on splash screen.
Edit: a bootloop was caused by some error in boot.img repack. Will try to repack it again now.
How to enable ADB when booting? On Aurora I could get kernel messages via ADB using adb shell cat /proc/kmsg. And now I really miss this feature.

Okey, great news! Wi-fi turned on, but the phone will fastreboot if I turn it off (framework crash I think) and wont turn on again until a full reboot. Also it isn't really working: no networks found.
No changes at all except Aurora kernel + setprop persist.sys.wifimac mac_param in terminal. After that wi-fi turned on, but even with that prop I have no wi-fi mac.
From that I understand all my problems are from some RIL or hardware libs that don't load or load with mistakes. So I need to know what exactly it can be and what libs are for what. Also I think it can be because of unedited init.rc's in ramdisk so I need to know what to edit in them. I've tried to look through them but I don't understand anything in it.

nagato.fm said:
Okey, great news! Wi-fi turned on, but the phone will fastreboot if I turn it off (framework crash I think) and wont turn on again until a full reboot. Also it isn't really working: no networks found.
No changes at all except Aurora kernel + setprop persist.sys.wifimac mac_param in terminal. After that wi-fi turned on, but even with that prop I have no wi-fi mac.
From that I understand all my problems are from some RIL or hardware libs that don't load or load with mistakes. So I need to know what exactly it can be and what libs are for what. Also I think it can be because of unedited init.rc's in ramdisk so I need to know what to edit in them. I've tried to look through them but I don't understand anything in it.
Click to expand...
Click to collapse
Which ROM are you fixing? Isn't CM10?

Nope, it's some desire z jb rom.

Code:
[email protected]:~# adb shell dmesg
- exec '/system/bin/sh' failed: No such file or directory (2) -
That's what I'm getting now. Already tried to fix this issue with some methods from google, no results. Even tried to adb-push bash from 4pda to system/bin and make symlinks, no results. Phone is in bootloop. Any ideas?
P.S.: sh is actually in both xbin and bin, so the problem is somewhere in the boot.img, right?

Have tried all kind of sorcery, still bootloops and exec '/system/bin/sh' failed: No such file or directory (2). Don't know why this is happening. Either /system mounts on boot in some wrong poing or init.rc is completely messed up. But I've checked everything connected to mounting partitions in all init files (except binaries) and gained nothing. I really need some explanation of what are these files for and what they do and what they MUST do.
If someone can give me answers or advices, please, do it now. Because all my ideas are over and I simply don't know now what to do.
EDIT: with aurora boot.img (no changes at all) results are the same except the message in terminal is now "/system/bin/sh: no such tool"

The system/bin/sh error is caused by not mounting /system properly. Check the init.rc files, it could also be in init.emmc.rc if it's a CM rom.
Find out where the on emmc-fs trigger is; if you can't find it, add it into one of the init.rc files.
Code:
on emmc-fs
# mount mmc partitions
wait /dev/block/mmcblk0p12
mount ext4 /dev/block/mmcblk0p12 /system rw barrier=1
wait /dev/block/mmcblk0p13
exec /system/bin/e2fsck -p /dev/block/mmcblk0p13
mount ext4 /dev/block/mmcblk0p13 /data nosuid nodev barrier=1 noauto_da_alloc
mount ext4 /dev/block/mmcblk0p6 /cache nosuid nodev barrier=1

Not sure that I am following this thread properly. I am just starting out with android devel in Fedora. Have you recompiled the WLAN module?

eyeconic said:
Not sure that I am following this thread properly. I am just starting out with android devel in Fedora. Have you recompiled the WLAN module?
Click to expand...
Click to collapse
Nope, I have no proper skills for that, sorry.

I still need some information
Mostly completely rewrote init. files and still no results.
According to this: (http://forum.xda-developers.com/showpost.php?p=30458679&postcount=1)
The Android Boot Process
Bootloader – In HD2’s case, Magldr or cLK – loads the kernel based on how you have configured the phone.
Kernel – The kernel (zImage) is loaded into RAM along with an initial ramdisk (initrd.gz), which initializes various devices (IO, memory, GPU, etc.), interrupts, and mounts the root file system (/). After this, the first user-space process called init is started.
Init – this is a binary file that is contained within the initrd.gz. The init binary processes init.rc and init..rc , along with other .rc files that are called by these two .rc files. Some of the key functions (from this thread’s perspective) in the order of their initialization/ execution are:
The init process follows the instructions in the init.rc and init.xyz.rc files and creates empty directories including /data. It then mounts the storage devices (partitions in the internal NAND (MTD)) to these empty directories. The NAND partition for system is mounted to /system, followed by the partitions specified for data, cache, etc. The directories for dalvik-cache (/data/dalvik-cache) are also created by the init process after mounting the specified device to /data.
The init process then starts various services including adb, service manager, Volume Daemon (vold) for media like SD Card (FAT partition). Most importantly, the zygote service which initiates the Dalivk-Cache is loaded in this sequence.
As we all know, Android is based on Linux. The boot sequence described above is common for all Linux machines – until the zygote stage. Core Android file like core, framework, services, IME, policy, etc. are executed from the Dalvik-Cache and hence Initialization of the Dalvik Cache is pretty much where Android comes into the picture
The sysinit/ run-parts part, which runs scripts from the /system/etc/init.d later the Zygote stage. No matter how this is done, Android has already started loading by the time the boot process comes to executing scripts in /system/etc/init.d
Click to expand...
Click to collapse
Click to expand...
Click to collapse
the error is in mounting nand partitions, but how can it past to starting adb when it fails on mounting system partitions? I don't understand this.

[Q] Export / Import Apps-Data from / to data.img

Hello,
I would like to get some help with my SD-Build Android MccM MIUI.
First it started random crashes of the lockscreen. I could power on the display but it kept being black. I only could reset my HD2 and reboot my Android.
Now my Android doesn't boot anylonger. It opens the HTC-Boot-Animation und nothing happens. I waited about an hour.
I replaced the Android-folder on my SD-Card and Android booted again. But my contacts and the apps (their stored data) which I installed after the backup aren't available. With the old version, Android don't boot. If I only replace data.img with my backup, Android boots but without the apps.
My question ist, how do I get the apps-data (e.g savegames) exported from data.img and imported in my backup version?
Could please someone help me?
Greetings Marco
PS: Sorry, my English is a little bit rusty.

Kaschparl79 said:
I replaced the Android-folder on my SD-Card and Android booted again. But my contacts and the apps (their stored data) which I installed after the backup aren't available. With the old version, Android don't boot. If I only replace data.img with my backup, Android boots but without the apps.
My question ist, how do I get the apps-data (e.g savegames) exported from data.img and imported in my backup version?
Click to expand...
Click to collapse
I am a little confused. Did you overwrite your data.img file or do you still have the original one? If you still have it your apps and data should be contained in there.
You should be able to read/view the file in Linux if you have a bootable Linux CD.
If you only have Windows copy the original data.img file to your PC and download/install this old program and unzip it. It should allow you to view the content of your data.img and extract things from it.

NYLimited said:
I am a little confused. Did you overwrite your data.img file or do you still have the original one? If you still have it your apps and data should be contained in there.
You should be able to read/view the file in Linux if you have a bootable Linux CD.
If you only have Windows copy the original data.img file to your PC and download/install this old program and unzip it. It should allow you to view the content of your data.img and extract things from it.
Click to expand...
Click to collapse
I'm sorry about your confusion.
I backuped the data.img file before overwriting it with an older backup to get Andoid working again. So I still have the file which seem a little bit corrupt.
These were my thoughts that the apps should be stored in there. I think I'll try both suggestions. Thanks.
Edit: Thanks for your help. I already had ext2explorer on my PC. And I could open data.img. Now I have to find the place where the apps stored (savegames ) their data and my phonebook. Any suggestions where to look for the phonebook and maybe the game tribez?
Greetings from Germany

Kaschparl79 said:
I'm sorry about your confusion.
I backuped the data.img file before overwriting it with an older backup to get Andoid working again. So I still have the file which seem a little bit corrupt.
These were my thoughts that the apps should be stored in there. I think I'll try both suggestions. Thanks.
Edit: Thanks for your help. I already had ext2explorer on my PC. And I could open data.img. Now I have to find the place where the apps stored (savegames ) their data and my phonebook. Any suggestions where to look for the phonebook and maybe the game tribez?
Click to expand...
Click to collapse
That gets a little more complicated.. Generally, the contacts are stored in a SQLite database. The location can vary depending on the ROM that is installed.
The simplest attempt, without getting too technical and installing a SQLite CLI is to look for the contacts database. Try something like this in the terminal window:
Code:
su
find /system -iname '*.db' |grep ontact
Hopefully, you will see something like this as a result:
Code:
/dbdata/databases/com.android.providers.contacts/contacts.db
/data/data/com.android.providers.contacts/databases/contacts2.db
You can try copying the files and see if they help.
Good luck!

NYLimited said:
That gets a little more complicated.. Generally, the contacts are stored in a SQLite database. The location can vary depending on the ROM that is installed.
The simplest attempt, without getting too technical and installing a SQLite CLI is to look for the contacts database. Try something like this in the terminal window:
Code:
su
find /system -iname '*.db' |grep ontact
Hopefully, you will see something like this as a result:
Code:
/dbdata/databases/com.android.providers.contacts/contacts.db
/data/data/com.android.providers.contacts/databases/contacts2.db
You can try copying the files and see if they help.
Good luck!
Click to expand...
Click to collapse
Thanks again.
Found the contacts in data/... but copying it into the other data.img caused some shutdown of ...acore process/program. The same problem with the savegame. Process tribez is unsepected stopped...
Maybe I'm doing something wrong mounting the data.img. Do know the exact command for mounting the file correctly for writing data?

Kaschparl79 said:
Thanks again.
Found the contacts in data/... but copying it into the other data.img caused some shutdown of ...acore process/program. The same problem with the savegame. Process tribez is unsepected stopped...
Maybe I'm doing something wrong mounting the data.img. Do know the exact command for mounting the file correctly for writing data?
Click to expand...
Click to collapse
You are asking good questions but not easy ones to answer. The mount command is specific to your device and rom. I do not have any sd roms to look at.
Let's try a few things.
First, try to clear cache for the contact apps. You can use ROM Toolbox or the system's app manager. This may help.
Second, you can try to look in the ROM's system folder and see if you have something like init.rc (probably in root, if there) If you find it look at it with a text viewer and search for Mount. You may find the proper command line.
Last, and this one needs to be modified, you can try something like these in the terminal window. Keep in mind that your device names and file systems are most likely different!
Code:
mount yaffs2 [email protected] /mnt/cache nosuid nodev
mount ext4 /dev/block/mmcblk0p2 /NativeSD wait noatime nodiratime barrier=0
---
Duct tape is like the force. It has a light side and a dark side and it holds the universe together. (via Tapatalk)

Thanks, solved
NYLimited said:
You are asking good questions but not easy ones to answer. The mount command is specific to your device and rom. I do not have any sd roms to look at.
Let's try a few things.
First, try to clear cache for the contact apps. You can use ROM Toolbox or the system's app manager. This may help.
Second, you can try to look in the ROM's system folder and see if you have something like init.rc (probably in root, if there) If you find it look at it with a text viewer and search for Mount. You may find the proper command line.
Last, and this one needs to be modified, you can try something like these in the terminal window. Keep in mind that your device names and file systems are most likely different!
Code:
mount yaffs2 [email protected] /mnt/cache nosuid nodev
mount ext4 /dev/block/mmcblk0p2 /NativeSD wait noatime nodiratime barrier=0
Click to expand...
Click to collapse
Thanks for your help. I made it work.
As I use an older SD-Version of Android your last code I couldn't use.
For those who will have a similar problem:
With the programm file I checked the data.img and it is an ext4 image which I mounted in linux. I mounted the workung data.img file, too.
Next I deleted the folders which contained the contacts and of cause the savegame from the good data.img. Then I copied these folders from the faulty data.img into the good data.img. But I had to use the terminal and cp with option -a to preserve the ownerships of the files and folders.
After that I used fsck on the unmounted data.img and copied the file back on my sd card. Everything worked fine.
Thanks again and greetings from Germany

How to mount a NFS share?

Hello there!
I'm not sure wether this is the right Forum thread, nor if it's even possible.
English is not my first language, but i hope i can make myself clear and explain my problem.
As in the title mentioned I just want to mount a nfs share into my filesystem so that i can access my media through a vpn whereever I go.
I'm using a Synology Diskstation as NAS and created some NFS-shares (tried version 3 and 4) which are accessable in my Network. It's working flawless with my raspberry pi and with my debian system. I don't want to use smb (cfis).
I want to use my favorit musicplayer to listen to my music, mounted via fstab in the musicfolder for example.
Right now i'm using the yatse app, works fine - but it's just a workaround....
I tried FreedomOS(stock kernel and elementalx)+busybox and Resurrection Remix(stockkernel and lightningkernel)+ busybox. All i get is Invalid argument or error messages. I just can't get it to work. It's a linux system, why can't i use a simple nfs share?
Any help would be apreciated.
Thanks in advance!

I used to mount a nfs share with busybox so be sure to have that installed.
next be sure to have a working VPN connection to your home network.
One more thing to check is that VPN connections are allowed to access the nfs shares. Dont know if you need to set this up with synology or that it's enabled by default.

Thanks for the response.
I have all permissions set to get access to the nfs-share, tried it without vpn aswell. The vpn itself is working like a charm.
I have access to my NAS via webinterface and sftp, i can control and stream from my raspberry pi aswell. No problems with the vpn for sure.
I'm using busybox aswell. Can you post me your mount command or your fstab line for the mount?

the1weasel said:
Thanks for the response.
I have all permissions set to get access to the nfs-share, tried it without vpn aswell. The vpn itself is working like a charm.
I have access to my NAS via webinterface and sftp, i can control and stream from my raspberry pi aswell. No problems with the vpn for sure.
I'm using busybox aswell. Can you post me your mount command or your fstab line for the mount?
Click to expand...
Click to collapse
I used this i believe.
Your kernel needs to support it.
https://gist.github.com/aldur/4a3f90a111b71662f056

maikvitesse said:
I used this i believe.
Your kernel needs to support it.
https://gist.github.com/aldur/4a3f90a111b71662f056
Click to expand...
Click to collapse
Thats exactly what i was told over here https://forum.xda-developers.com/oneplus-5/development/kernel-elementalx-op3-1-00-t3626808/post73156290#post73156290
I will follow up on that, thanks for pointing me in the right direction aswell.

Ok, i was able to mount the share.
Now that it's getting a general question i will follow up here. I posted what i did over here aswell and got it solved to this state.
I can see the files in the Terminal, but not in any App (explorer, musicplayer etc.).
As i already wrote here: https://forum.xda-developers.com/showpost.php?p=73161675&postcount=437 I'm guessing it's because i mounted as root so normal users can't use it. Or at least thats what I'm thinking.
I searched the forum already and just found a thread with someone having the same problem without solution.
Is there a way that i can use the mounted share with any app I want?

Just for the roundup.
Here is whats working:
mount a nfs-share through an terminal app. => Files are visible/browsable
whats not working:
Use the mounted nfs-share systemwide with any other app.
What i tried (used Termux):
mount into /mnt/remotenfs => files show up in terminal, just there.
mount into /storage/emulated/0/Music/remote => files show up in terminal, just there.
mounted the share and then started an explorer (solidexplorer) from terminal - same result. No fileaccess through explorer.

the1weasel said:
Just for the roundup.
Here is whats working:
mount a nfs-share through an terminal app. => Files are visible/browsable
whats not working:
Use the mounted nfs-share systemwide with any other app.
What i tried (used Termux):
mount into /mnt/remotenfs => files show up in terminal, just there.
mount into /storage/emulated/0/Music/remote => files show up in terminal, just there.
mounted the share and then started an explorer (solidexplorer) from terminal - same result. No fileaccess through explorer.
Click to expand...
Click to collapse
I think I suggested something like this as a way to glean some information about this problem in the other thread, but don't recall for certain what the outcome if any was:
At least since V5 and above of Android OS, there's been some sort of thread insularity that keeps another thread from seeing what some of the first one sees. (moreso than before V5). I figured that since fstab.qcom (or whatever the name of the actual startup file where "mount -a" is pointed) must contain the mounted partitions that are visible to all. If that's the case, it's either the startup mount daemon, or it is in one of the columns of each "mount" entry in fstab.*.
I think I suggested adding a mount entry without the "automount at start" parameter for your remote music. Just curious if that was tried? Also, I thought the file where these were entries were kept in M & N (6 & 7) had "*vold*" in the title.
I'm also curious about this and will look around for some better answer because it seems very non-linux / android that only the thread performing the action can see the result (although that is how local actions / variables act).
After some poking around: I think this link explains some possible reasons for this behavior, not that there isn't some way around it. Probably there is no way around it without some compromise of whatever privacy additions android OS is after. It sounds a lot like an SELinux & /proc FS change. https://stackoverflow.com/questions/38590140/file-system-changes-in-android-nougat

hachamacha said:
I think I suggested something like this as a way to glean some information about this problem in the other thread, but don't recall for certain what the outcome if any was:
At least since V5 and above of Android OS, there's been some sort of thread insularity that keeps another thread from seeing what some of the first one sees. (moreso than before V5). I figured that since fstab.qcom (or whatever the name of the actual startup file where "mount -a" is pointed) must contain the mounted partitions that are visible to all. If that's the case, it's either the startup mount daemon, or it is in one of the columns of each "mount" entry in fstab.*.
I think I suggested adding a mount entry without the "automount at start" parameter for your remote music. Just curious if that was tried? Also, I thought the file where these were entries were kept in M & N (6 & 7) had "*vold*" in the title.
I'm also curious about this and will look around for some better answer because it seems very non-linux / android that only the thread performing the action can see the result (although that is how local actions / variables act).
After some poking around: I think this link explains some possible reasons for this behavior, not that there isn't some way around it. Probably there is no way around it without some compromise of whatever privacy additions android OS is after. It sounds a lot like an SELinux & /proc FS change. https://stackoverflow.com/questions/38590140/file-system-changes-in-android-nougat
Click to expand...
Click to collapse
Thanks for the response, looks like you are much more into that android thing....
I just added
"10.11.12.10:/volume1/Audio /storage/emulated/0/Music/remote nfs nolock,ro defaults"
to the fstab.qcom . Doesn't mount at startup.
I realized some inconsitency in the ssh thing, sometimes it works mounting via ssh, sometimes not....strange. (mount: applet not found)
To be sure i'm doing all that stuff without ssh.
Edit:
For everyone else reading this. It's not about music, the musicfolder is just a random folder to see if it's working.

the1weasel said:
Thanks for the response, looks like you are much more into that android thing....
I just added
"10.11.12.10:/volume1/Audio /storage/emulated/0/Music/remote nfs nolock,ro defaults"
to the fstab.qcom . Doesn't mount at startup.
I realized some inconsitency in the ssh thing, sometimes it works mounting via ssh, sometimes not....strange. (mount: applet not found)
To be sure i'm doing all that stuff without ssh.
Edit:
For everyone else reading this. It's not about music, the musicfolder is just a random folder to see if it's working.
Click to expand...
Click to collapse
To add to that: It doesn't seem like any surprise that just putting an entry in the fstab.qcom doesn't work the same as the others. As I search around for a way to do this it becomes apparent that even a Synology app designed to do this (DS File) (Mounts a NFS share on Synology box and allows file transfers) isn't able to allow others to see it's mounted share.
Before I mounted a Synology folder using Synology DS File, I created a tmp folder and cd there and then did a mount > mountbefore.log. After the mount of the share while still running DS File pointing to my Synology folder, I did a mount > ./mountafter.log. I then did a diff -urN (and just a diff) ./mountbefore.log ./mountafter.log that showed no differences. That seems telling.
Also, I did the same with /proc/mounts /proc/mountinfo /proc/mountstatus before and after, and nothing showed up as different. Also I did a ps | grep DS to see whether the ps output gave me any clue as to what local mount point was used, but though I could see the DS process, I couldn't see it's mountpoints.
I'm pretty sure there's an SELINUX (or many) entrie(s) for the mounted share that prevent the usual visibility. I recall reading that "fixing" the /proc exploits was a big priority with the advent of SElinux so I'll look at that angle too. I don't think that the fact that DLNA works is of much use in this problem. It's really a solution to a different and specific problem.

hachamacha said:
To add to that: It doesn't seem like any surprise that just putting an entry in the fstab.qcom doesn't work the same as the others. As I search around for a way to do this it becomes apparent that even a Synology app designed to do this (DS File) (Mounts a NFS share on Synology box and allows file transfers) isn't able to allow others to see it's mounted share.
Before I mounted a Synology folder using Synology DS File, I created a tmp folder and cd there and then did a mount > mountbefore.log. After the mount of the share while still running DS File pointing to my Synology folder, I did a mount > ./mountafter.log. I then did a diff -urN (and just a diff) ./mountbefore.log ./mountafter.log that showed no differences. That seems telling.
Also, I did the same with /proc/mounts /proc/mountinfo /proc/mountstatus before and after, and nothing showed up as different. Also I did a ps | grep DS to see whether the ps output gave me any clue as to what local mount point was used, but though I could see the DS process, I couldn't see it's mountpoints.
I'm pretty sure there's an SELINUX (or many) entrie(s) for the mounted share that prevent the usual visibility. I recall reading that "fixing" the /proc exploits was a big priority with the advent of SElinux so I'll look at that angle too. I don't think that the fact that DLNA works is of much use in this problem. It's really a solution to a different and specific problem.
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Hmm I just found this: https://forum.xda-developers.com/showthread.php?t=2106480 and will have a closer look into it later, I'm running out of time right now and have to leave.
But what I've read so far looks similar to the problem we are facing right now. Maye thats the way to go. I'll try it, as I said, later.
At this point i don't even care if it's smb or nfs as long as i can mount my stuff into the filesystem.

One other thing I noticed but haven't messed around with yet is that I was looking at the various mount commands for different implementations (not that any will just work like 2 versions ago), and noticed that only /system/xbin/mount is a soft link to /system/xbin/busybox (standard busybox link to allow using it various look-alike-to-linux commands.
But then I realized that /system/bin/mount is also there, also a soft-link to /system/bin/toybox (another busybox clone) and am wondering if it behaves any differently. Might be worth a look (but I doubt it). /system/bin/toybox is at least a different version of busybox and not linked to it.
Just looked at your last reply and realized that unfortunately the two links of interest are at the now nonexistant domain cyanogenmod.org. Maybe the diffs are worthwhile. Gotta work, Later.

hachamacha said:
One other thing I noticed but haven't messed around with yet is that I was looking at the various mount commands for different implementations (not that any will just work like 2 versions ago), and noticed that only /system/xbin/mount is a soft link to /system/xbin/busybox (standard busybox link to allow using it various look-alike-to-linux commands.
But then I realized that /system/bin/mount is also there, also a soft-link to /system/bin/toybox (another busybox clone) and am wondering if it behaves any differently. Might be worth a look (but I doubt it). /system/bin/toybox is at least a different version of busybox and not linked to it.
Just looked at your last reply and realized that unfortunately the two links of interest are at the now nonexistant domain cyanogenmod.org. Maybe the diffs are worthwhile. Gotta work, Later.
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I'm back home already a little late but enaugh time for more researches.
This link:
https://github.com/mkasick/android_...mmit/b358bf82c079a577f011c167da8b65faef73a06e
is working. And really worth reading it and explains the visibility problem.

mkasick said:
Android 4.2 breaks Dalvik-apps that mount file systems to be shared with other apps. This includes CifsManager, Mount Manager, essentially anything that mounts cifs shares, FUSE file sytems, etc. The symptom is that the mounted contents appear fine to app that peforms the mount operation (assuming the app itself provides the ability to browse the contents), but every other app only sees an empty directory at the mount point.
It turns out that this problem is a side-effect of the approach used to implement multi-user storage in Android 4.2. I've explained the problem in detail in the commit log for a Gerrit issue we're reviewing for CyanogenMod 10.1 that addresses the problem:
Ideally, any 4.2 ROM can provide support for CifsManager by applying a change to Dalvik, and a second change to the boot ramdisk's init.rc:
Dalvik change: Zygote: Restrict slave mountspace so Dalvik apps can mount system-wide volumes
init.rc change: init.rc: Create /storage mountpoint so Dalvik can mark as slave in zygotes
Alternatively, ROMs that can't/prefer not to use a source-build Dalvik (libdvm), I've also provided a kernel patch that implements a similar workaround within the kernel. It also requires the above init.rc modification:
Kernel commit: Restrict slave mountspace so Dalvik apps can mount system-wide volumes
init.rc change: init.rc: Create /storage mountpoint so Dalvik can mark as slave in zygotes
With either of the above two fixes, CifsManager et al. should work when using a mountpoint outside /storage (and /mnt/shell/emulated). I'd recommend using "/mnt/cifs" or something similar. Attempting to mount inside /storage retains the previous behavior where the mount can not be seen by other apps.
Note that ROMs only need one of the above two fixes, although they are compatible with each other and will function correctly if both are present. The Dalvik approach is preferred over the kernel workaround where feasible. Attached are the three patches referenced in the issues/commits.
Attachments: (sry for editing the quote)
dalvik.diff: https://forum.xda-developers.com/attachment.php?attachmentid=1656555&d=1358548352
nitrc.diff: https://forum.xda-developers.com/attachment.php?attachmentid=1656556&d=1358548352
kernel.diff: https://forum.xda-developers.com/attachment.php?attachmentid=1656557&d=1358548352
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Look at the attached files, the answer is in there, but i don't know what to do with it

Thanks. I've got to do some work from home before I go back to messing around with this. I read the zygote/Dalvik page. I'm sure I've read it before but had the impression that the information was obsolete, but maybe not!

I guess there a couple of problems for me with that information.
1) It is pretty old (2013 or so): I can't even find the pertinent file in my source tree anymore.
2) dalvik has undergone a lot of revisions since this was tried. I'm not at all sure the change looks very different from the way tmpfs is /storage mounted already.
(but I could try this one. I figure in real time, if it'd let me remount it with the changes, the worst it could do is lock me up).
3) the kernel I'm using doesn't appear to have that line in it, besides, I'd have to rebuild the kernel.
I guess I'd much rather find a userspace way around this problem if possible. I seems almost unthinkable that there'd be no other way (via the mount cmd for example and careful choice of mount folder) to mount something that could be seen by any process. I'll keep trying from that angle.
Regrouping: I was ssh'd into the synology server poking around when I noticed that the running nfs daemon (as shown by ps -ef | grep nfs) was nfs4. I didn't see that Android supported that so I decided to just move the entire exercise of mount.nfs4 over to Ubuntu 16.04 box.
I made sure I had all the NFS stuff installed and pretty much did these statement:
mount -t nfs -o ro x.x.x.x/share /mnt/remote # failed with bad argument
mount -t nfs4 -o ro x.x.x.x/share /mnt/remote # failed with bad argument
mount.nfs4 x.x.x.x/share /mnt/remote #failed with bad argument.
At that point I decided that android didn't matter if I couldn't figure out how to mount NFS shares from linux.
I then tried mount -t cifs -o ro,user=me,pass=pwd //server/share /mnt/remote
It mounted up immediately. I need to look up some working examples of someone using mount.nfs / 4 from anywhere to synology. While I'm sure I've used it before, I'm also pretty sure I don't recall how exactly the setup and syntax works.