boot to bash
Tomas M
parent
0ad779c66a
commit
bfcf2bdef4
11
.config
11
.config
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@ -5,7 +5,7 @@
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# Live Kit Name. Defaults to 'mylinux';
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# For example, Slax changes it to 'slax'
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# Must not contain any spaces.
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LIVEKITNAME="mylinux"
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LIVEKITNAME="slax"
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# Kernel version. Change it to "3.2.28" for example, if you are building
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# Live Kit with a different kernel than the one you are actually running
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@ -19,17 +19,12 @@ MKMOD="bin etc home lib lib64 opt root sbin srv usr var"
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# List of files and directories you'd like to exclude from your Live Kit
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EXCLUDE="/etc/fstab /etc/mtab"
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# Temporary directory to store compressed directories
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# (the whole folder will be erased and recreated during build!)
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TMPDATA=/tmp/live_data_$$
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# Temporary directory to store livekit filesystem
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LIVEKITDATA=/tmp/livekit-data-$$
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# Bundle extension, for example 'sb' for .sb extension
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BEXT=sb
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# Change this variable if you installed your distro to some directory.
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# for example ROOT=/tmp/newdir. You may leave it empty, then it defaults to /
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ROOT=
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# Directory with kernel .ko modules, can be different in some distros
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LMK="lib/modules/$KERNEL"
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25
build
25
build
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@ -20,13 +20,26 @@ if [ "$(mksquashfs 2>&1 | grep "Xdict-size")" = "" ]; then
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fi
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# build initramfs image
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cd initramfs
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INITRAMFS=$(./initramfs_create "$LIVEKITNAME")
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cd ..
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# create live kit filesystem
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rm -Rf "$LIVEKITDATA"
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BOOT="$LIVEKITDATA"/"$LIVEKITNAME"/boot
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mkdir -p "$BOOT"
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cp bootfiles/isolinux.bin $BOOT
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cp bootfiles/vesamenu.c32 $BOOT
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mv "$INITRAMFS" $BOOT/initfs.img
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cat bootfiles/isolinux.cfg | sed -r "s:/boot/:/$LIVEKITNAME/boot/:" > $BOOT/isolinux.cfg
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cp /boot/vmlinuz $BOOT/
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# create compressed bundles
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# ...
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# create ISO for CD image (so I can test it)
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cd "$LIVEKITDATA"
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mkisofs -o "/tmp/iso.iso" -v -J -R -D -A "$LIVEKITNAME" -V "$LIVEKITNAME" \
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-no-emul-boot -boot-info-table -boot-load-size 4 \
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-b "$LIVEKITNAME"/boot/isolinux.bin -c "$LIVEKITNAME"/boot/isolinux.boot . \
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>/dev/null 2>/dev/null
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@ -1 +1,78 @@
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#!/bin/bash
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. ../.config
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# Automatically determine the architecture we're building on:
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if [ -z "$MYARCH" ]; then
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case "$( uname -m )" in
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i?86) export MYARCH=i486 ;;
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arm*) export MYARCH=arm ;;
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# Unless $MYARCH is already set, use uname -m for all other archs:
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*) export MYARCH=$( uname -m ) ;;
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esac
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fi
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INITRAMFS=/tmp/livekit-initramfs-$MYARCH-$$
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# copy file to initramfs tree, including
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# all library dependencies (as shown by ldd)
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# $1 = file to copy (full path)
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copy_including_deps()
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{
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# if source doesn't exist or target exists, do nothing
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if [ ! -e "$1" -o -e "$INITRAMFS"/"$1" ]; then
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return
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fi
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cp -R --parents "$1" "$INITRAMFS"
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if [ -L "$1" ]; then
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DIR="$(dirname "$1")"
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LNK="$(readlink "$1")"
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copy_including_deps "$(cd "$DIR"; realpath "$LNK")"
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fi
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ldd "$1" 2>/dev/null | sed -r "s/.*=>|[(].*//g" | sed -r "s/^\\s+|\\s+\$//" \
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| while read LIB; do
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copy_including_deps "$LIB"
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done
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shift
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if [ "$1" != "" ]; then
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copy_including_deps "$@"
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fi
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}
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rm -Rf $INITRAMFS
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mkdir -p $INITRAMFS/{bin,dev,etc,lib,lib64,mnt,proc,root,run,sbin,sys,tmp,usr,var/log}
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modprobe zram
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copy_including_deps /dev/zram0
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copy_including_deps /dev/console /dev/null /dev/fb0 /dev/zero
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copy_including_deps /dev/ram /dev/systty /dev/fuse
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copy_including_deps /dev/tty /dev/tty?
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copy_including_deps /bin/bash /bin/mount
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copy_including_deps /bin/ln /bin/cat /bin/ls /bin/free
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copy_including_deps /sbin/blkid /sbin/swapon /sbin/mkswap /sbin/modprobe
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copy_including_deps /bin/grep /bin/egrep /bin/cut /bin/tr
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copy_including_deps /sbin/lsmod
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copy_including_deps /sbin/fdisk
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#copy_including_deps /usr/bin/vi
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#copy_including_deps /usr/bin/strace
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copy_including_deps /$LMK/kernel/fs
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copy_including_deps /$LMK/kernel/drivers/staging/zram
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copy_including_deps /$LMK/modules.*
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depmod -b $INITRAMFS
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echo "root::0:0::/root:/bin/bash" >$INITRAMFS/etc/passwd
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touch $INITRAMFS/etc/{m,fs}tab
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cp init $INITRAMFS/
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chmod a+x $INITRAMFS/init
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cd $INITRAMFS
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find . -print | cpio -o -H newc 2>/dev/null | gzip -f --best >$INITRAMFS.img
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echo $INITRAMFS.img
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