Editing Debian LiveCD

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[[Category:OtherOS]]
=Introduction=
=Introduction=


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=Creating Initial System with debootstrap=
=Creating Initial System with debootstrap=


 
<pre>
{{Keyboard|content=<syntaxhighlight lang="bash">
apt-get install debootstrap
apt-get install debootstrap


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tasksel install standard
tasksel install standard
aptitude install binutils gcc make git vim openssh-server sudo wireless-tools wpasupplicant libssl-dev libncurses5-dev
aptitude install binutils gcc make git vim openssh-server sudo wpasupplicant libssl-dev
aptitude  install gcc-spu g++-spu newlib-spu spu-tools
aptitude  install gcc-spu g++-spu newlib-spu spu-tools
aptitude  install parted kpartx cryptsetup libreadline-dev libaio-dev libdevmapper-dev libudev-dev


# Make SSH server start at boot so we could ssh to our LiveCD
# Make SSH server start at boot so we could ssh to our LiveCD
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aptitude clean
aptitude clean
</pre>


rm -f /etc/udev/rules.d/70-persistent-net.rules
=Creating Root Filesystem=


# exit chroot environment
<pre>
 
exit
 
# Unmount dev and proc
 
umount /root/livecd/dev/shm
umount /root/livecd/dev/pts
umount /root/livecd/dev
umount /root/livecd/proc
</syntaxhighlight>}}
 
=Creating Root Filesystem=
{{Keyboard|content=<syntaxhighlight lang="bash">
cd /root/livecd
cd /root/livecd
mksquashfs * ../root.sfs
mksquashfs * ../root.sfs
</syntaxhighlight>}}
</pre>


=Modifying Root Filesystem=
=Modifying Root Filesystem=
{{Keyboard|content=<syntaxhighlight lang="bash">
 
<pre>
cd /root
cd /root
unsquashfs root.sfs
unsquashfs root.sfs
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mksquashfs * ../root-changed.sfs
mksquashfs * ../root-changed.sfs
</syntaxhighlight>}}
</pre>


=Linux 3 Kernel=
=Linux 3 Kernel=


* We need a Linux 3 kernel with overlayfs support so we could create a tmpfs over our read-only base filesystem.
* We need a Linux 3 kernel with overlayfs support so we could create a tmpfs over our read-only base filesystem.
* At the moment overlayfs is not supported on Linux 3.5 so it leaves us with Linux 3.4 which doesn't really matter because all my Linux 3 drivers are supported on Linux 3.4 just fine.
* Furthermore, we want to compile PS3 HDD driver as module because in this case we can easily change HDD region flags.
* Furthermore, we want to compile PS3 HDD driver as module because in this case we can easily change HDD region flags.
See my GIT repos:
* http://gitorious.ps3dev.net/ps3linux/kernel-configs
* http://gitorious.ps3dev.net/ps3linux/kernel-patches-34
* http://gitorious.ps3dev.net/ps3linux/kernel-patches-35
* http://gitorious.ps3dev.net/ps3linux/kernel-patches-36
* http://gitorious.ps3dev.net/ps3linux/livecd


=Initramfs=
=Initramfs=
See my GIT repo: http://gitorious.ps3dev.net/ps3linux/livecd
==BusyBox==
* We need a couple of user-space applications to mount filesystems, load kernel modules and so on.
* And make sure you compile BusyBox without any library dependencies.
* I compiled my BusyBox executable on PS3 Linux but you could cross-compile it too but then you need a complete PowerPC toolchain with libc.


<pre>
<pre>
http://busybox.net/downloads/busybox-1.20.1.tar.bz2
tar xvjf busybox-1.20.1.tar.bz2
cd busybox-1.20.1
make menuconfig
make
</pre>
==Creating Image==
{{Keyboard|content=<syntaxhighlight lang="bash">


# Populate initramfs
# Populate initramfs
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mkdir initramfs
mkdir initramfs
cd initramfs
cd initramfs
mkdir -p bin dev etc lib/modules/3.6.4 mnt proc sbin sys usr/bin usr/sbin
mkdir -p bin dev etc lib/modules/3.4.9 mnt proc sbin sys usr
 
cp ~/busybox-1.20.1/busybox bin/
cd bin
ln -sf busybox sh
cd ..
 
echo 'sda.* 0:6 0660' >> etc/mdev.conf
echo 'sr[0-9] 0:6 0660 @ln -sf $MDEV cdrom' >> etc/mdev.conf
 
cat >etc/modules <<EOF
> fat
> vfat
> isofs
> crc-ccitt
> crc-itu-t
> lzo_compress
> udf
> squashfs
> overlayfs
> ps3_gelic
> ps3stor_lib
> sg
> ps3rom
> usb-common
> usbcore
> ehci-hcd
> ohci-hcd
> usb-storage
> EOF


for mod in fat vfat isofs crc-ccitt crc-itu-t lzo_compress udf squashfs overlayfs \
for mod in fat vfat isofs crc-ccitt crc-itu-t lzo_compress udf squashfs overlayfs \
           ps3_gelic ps3stor_lib sg ps3rom usb-common usbcore ehci-hcd ohci-hcd usb-storage; do
           ps3_gelic ps3stor_lib sg ps3rom usb-common usbcore ehci-hcd ohci-hcd usb-storage; do
     path=`find  /home/glevand/linux-3.6.4-build/lib/modules/3.6.4 -name $mod.ko`
     path=`find  /home/glevand/linux-3.4.9-build/lib/modules/3.4.9 -name $mod.ko`
     cp $path lib/modules/3.6.4/
     cp $path lib/modules/3.4.9/
done
done


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cd ..
cd ..
cat initramfs.cpio | gzip > initramfs.cpio.gz
cat initramfs.cpio | gzip > initramfs.cpio.gz
</pre>


# Make changes to initramfs
=Downloads=
 
gunzip initramfs.cpio.gz
mkdir initramfs
cd initramfs
cpio -i -d -H newc --no-absolute-filenames < ../initramfs.cpio
</syntaxhighlight>}}
=Images=


* vmlinux-3.6.4.xz: http://www.multiupload.nl/D0PYT6HGC0 (MD5 4b5fdb2995fde82e0f6817a7a86fca2c)
* vmlinux-3.4.9.xz: http://www.multiupload.nl/9C1XVAB3RU
* root.sfs: http://www.multiupload.nl/MWDSBR4OJZ (MD5 3ee12e2d351e0bbe1cd7818be23d8973)
* initramfs.cpio.gz: http://www.multiupload.nl/KROXJ799N6 (MD5 8da82022b1c2541dc419619e710a0a3f)
* Tools available on the root filesystem: gcc, spu-gcc, spuisofs, spuldrfs, ps3vuart-tools, ps3sed and all my other PS3 Linux drivers. Everything you need to compile and test various PS3 stuff.
* root.sfs: http://www.multiupload.nl/NERXNME3JJ (MD5 e2ed20d27092105961507de5d7b49ed3)
* In case someone still hasn't figured it out yet, password for root is root and password for glevand is glevand :)
* I enabled DHCP on Ethernet.
* You could use WLAN too but for that you have to modify the root filesystem and configure your SSID and PSK in /etc/network/interfaces.


==USB==
==USB==


* Your USB drive should be formatted with FAT32 filesystem.
* initramfs-usb.cpio.gz: http://www.multiupload.nl/Y084SCQBL3 (MD5 f94b6aec2e5fbbb26f7d466165071469)
* Create '''debianlive''' directory on your USB drive.
* Create '''debianlive''' directory on your USB drive.
* Put vmlinux-3.6.4 (extract xz archive), initramfs.cpio.gz and root.sfs into this directory.
* Put vmlinux-3.4.9 (extract xz archive), initramfs.cpio.gz and root.sfs into this directory.
 
{{Keyboard|content=<syntaxhighlight lang="bash">
$ ls -l /mnt/usb/debianlive/
total 257696
-rwxr-xr-x 1 root root  6746154 Aug 18 17:44 initramfs.cpio.gz
-rwxr-xr-x 1 root root 249835520 Aug 18 17:15 root.sfs
-rwxr-xr-x 1 root root  7288832 Aug 18 17:31 vmlinux-3.6.4
$ ls -l /mnt/usb/
-rwxr-xr-x  1 root root      188 Aug 18 17:30 kboot.conf
</syntaxhighlight>}}
 
* And create kboot.conf in the root directory of your USB drive with this content:
* And create kboot.conf in the root directory of your USB drive with this content:


<pre>
<pre>
debianlive=/debianlive/vmlinux-3.6.4 initrd=/debianlive/initramfs.cpio.gz
debianlive=/debianlive/vmlinux-3.4.9 initrd=/debianlive/initramfs.cpio.gz
</pre>
</pre>


==CDROM==
==CDROM==
(files seem missing)
* initramfs-cdrom.cpio.gz: http://www.multiupload.nl/SA9YK1HFK0 (MD5 f71f8667dc52540136f90a95d7111efc)
* debianlive.iso: http://www.multiupload.nl/TW41UIVAGV (MD5 eeba4fa3428c5d687bada3fd975ea9dd)
* https://www.sendspace.com/file/2negnt (added missing link to debianlive)
* https://mega.nz/#!k1sTXI4a!ANmRDBVYmEdaToauoePNSKvoDl7GXGw0ORNN9ZM0Tfo
* https://www.sendspace.com/file/f8wnpe
* http://uploaded.net/file/vdxmzopu
* https://disk.yandex.com/d/t7o60xrWTVlYqA
<!-- https://www.sendspace.com/file/a3bsty -->
{{Keyboard|content=<syntaxhighlight lang="bash">
mkdir -p iso/debianlive
cp root.sfs initramfs.cpio.gz vmlinux-3.6.4 iso/debianlive
echo "debianlive=/debianlive/vmlinux-3.6.4 initrd=/debianlive/initramfs.cpio.gz" > iso/kboot.conf
cd iso
mkisofs -R -J -l -o ../debianlive.iso .
cd ..
sudo cdrecord -v dev=/dev/sr0 blank=fast
sudo cdrecord -v dev=/dev/sr0 debianlive.iso
</syntaxhighlight>}}


=Links=
=Links=


* http://securityfocus.eu/?p=149
* http://securityfocus.eu/?p=149
{{Linux}}<noinclude>[[Category:Main]]</noinclude>
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