Editing Debian LiveCD
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=Introduction= | =Introduction= | ||
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=Creating Initial System with debootstrap= | =Creating Initial System with debootstrap= | ||
<pre> | |||
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 | 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 | ||
# 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> | |||
=Creating Root Filesystem= | |||
<pre> | |||
< | |||
cd /root/livecd | cd /root/livecd | ||
mksquashfs * ../root.sfs | mksquashfs * ../root.sfs | ||
</ | </pre> | ||
=Modifying Root Filesystem= | =Modifying Root Filesystem= | ||
<pre> | |||
cd /root | cd /root | ||
unsquashfs root.sfs | unsquashfs root.sfs | ||
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mksquashfs * ../root-changed.sfs | mksquashfs * ../root-changed.sfs | ||
</ | </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. | ||
=Initramfs= | =Initramfs= | ||
<pre> | <pre> | ||
# Populate initramfs | # Populate initramfs | ||
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mkdir initramfs | mkdir initramfs | ||
cd initramfs | cd initramfs | ||
mkdir -p bin dev etc lib/modules/3. | mkdir -p bin dev etc lib/modules/3.4.9 mnt proc sbin sys usr | ||
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. | path=`find /home/glevand/linux-3.4.9-build/lib/modules/3.4.9 -name $mod.ko` | ||
cp $path lib/modules/3. | 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> | </pre> | ||
=Links= | =Links= | ||
* http://securityfocus.eu/?p=149 | * http://securityfocus.eu/?p=149 | ||