first working Live Kit
Tomas M
parent
528d3ea214
commit
1b585a9212
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@ -1,6 +1,7 @@
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UI /boot/vesamenu.c32
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TIMEOUT 140
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MENU ROWS 4
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MENU CLEAR
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MENU BACKGROUND /boot/bootlogo.png
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@ -1,4 +1,14 @@
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#!/bin/bash
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# we're using precompiled busybox i486 binary, which runs on 64bit systems as well!
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wget -O ./busybox http://busybox.net/downloads/binaries/latest/busybox-i486
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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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wget -O ./busybox http://busybox.net/downloads/binaries/latest/busybox-$MYARCH
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chmod a+x ./busybox
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@ -4,12 +4,16 @@
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MEMORYDIR=/memory
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UNIONDIR=/union
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DATADIR=/mnt/data
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BUNDLESDIR=/mnt/bundles
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export PATH=.:/:/usr/sbin:/usr/bin:/sbin:/bin
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. /.config
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. /livekitlib
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header "Starting $LIVEKITNAME ..."
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init_proc
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init_devs
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init_aufs
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@ -17,21 +21,18 @@ init_zram
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init_union $MEMORYDIR $UNIONDIR
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# find data dir with filesystem bundles
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DATA="$(find_data $LIVEKITNAME)"
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DATA="$(find_data $LIVEKITNAME $DATADIR)"
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# copy to RAM if needed
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# add data to union
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union_append_bundles "$DATA"
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union_append_bundles "$DATA" "$BUNDLESDIR" "$UNIONDIR"
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# create empty fstab
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fstab_create "$UNIONDIR"
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mkdir /m
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mount /dev/sr0 /m
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modprobe squashfs
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mkdir /s
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mount -o loop -t squashfs /m/mylinux/core.sb /s
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# possibly switch root
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header "Live Kit phase ends, starting $LIVEKITNAME"
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change_root "$UNIONDIR"
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# testing message
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echo "If you see this message, then something went terribly wrong. Sorry!"
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header "!!ERROR!!"
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/bin/sh
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105
livekitlib
105
livekitlib
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@ -9,7 +9,7 @@
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# =================================================================
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# global variable
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DEBUG_IS_ENABLED=$(cat /proc/cmdline 2>/dev/null | grep debug)
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DEBUG_IS_ENABLED="$(cat /proc/cmdline 2>/dev/null | grep debug)"
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debug_log()
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{
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@ -59,7 +59,7 @@ debug_shell()
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{
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if [ "$DEBUG_IS_ENABLED" ]; then
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show_debug_banner
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bash < /dev/console
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sh < /dev/console
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echo
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fi
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}
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@ -71,7 +71,7 @@ fatal()
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echolog "Something went wrong and we can't continue. This should never happen."
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echolog "Please reboot your computer with Ctrl+Alt+Delete ..."
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echolog
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bash < /dev/console
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sh < /dev/console
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}
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@ -115,9 +115,9 @@ init_devs()
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{
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echo /sbin/mdev > /proc/sys/kernel/hotplug
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mdev -s
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modprobe zram
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modprobe loop
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modprobe squashfs
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modprobe zram 2>/dev/null
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modprobe loop 2>/dev/null
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modprobe squashfs 2>/dev/null
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}
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# Activate zram (auto-compression of RAM)
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@ -157,33 +157,98 @@ init_union()
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mount -t aufs -o xino=$1/xino,br=$1 none "$2"
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}
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# Make sure to mount FAT12/16/32 using vfat
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# in order to support long filenames
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# $1 = device
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#
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device_bestfs()
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{
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debug_log "device_bestfs"
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local PEEK
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PEEK="$(dd if="$1" bs=1k count=1 2>/dev/null | strings)"
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if [ "$(echo "$PEEK" | egrep -i "FAT[13][26]")" != "" ]; then
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echo "-t vfat"
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# TODO: this will work only with fuse
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# else if [ "$(echo "$PEEK" | egrep -i 'NTFS')" != "" ]; then
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# echo "-t ntfs-3g"
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fi
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}
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# Find LIVEKIT data by mounting all devices
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# If found, retain mounted disk
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# $1 = data directory to mount
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#
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find_data()
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{
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debug_log "find_data"
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local DEVICE FS MNT
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MNT=/mnt
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blkid -o device | while read DEVICE; do
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FS=$(blkid -s TYPE -o value $DEVICE)
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# TODO: if fs = ntfs then mount ntfs-3g, if fs=dos then mount vfat
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mount -o ro "$DEVICE" $MNT -t "$FS" 2>/dev/null
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if [ -d "$MNT/$LIVEKITNAME" ]; then
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echo $MNT
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mkdir -p "$1"
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blkid | sort | cut -d: -f 1 | while read DEVICE; do
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FS="$(device_bestfs "$DEVICE")"
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mount -r "$DEVICE" "$1" $FS
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if [ -d "$1/$LIVEKITNAME" ]; then
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echo "$1/$LIVEKITNAME"
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return
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fi
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umount $MNT 2>/dev/null
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umount "$1" 2>/dev/null
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done
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}
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mount_device()
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{
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echo "A"
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}
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# Mount squashfs filesystem bundles
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# and add them to union
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# $1 = directory where to search for bundles
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# $2 = directory where to mount bundles
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# $3 = directory where union is mounted
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#
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union_append_bundles()
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{
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echo "B"
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ls -1 "$1" | grep '.sb$' | sort | while read BUNDLE; do
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mkdir -p "$2/$BUNDLE"
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mount -o loop -t squashfs "$1/$BUNDLE" "$2/$BUNDLE"
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mount -o remount,add:1:"$2/$BUNDLE" none "$3"
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done
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}
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# Create empty fstab properly
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# $1 = root directory
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#
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fstab_create()
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{
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local FSTAB
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FSTAB="$1/etc/fstab"
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echo aufs / aufs defaults 0 0 > $FSTAB
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echo proc /proc proc defaults 0 0 >> $FSTAB
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echo sysfs /sys sysfs defaults 0 0 >> $FSTAB
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echo devpts /dev/pts devpts gid=5,mode=620 0 0 >> $FSTAB
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echo tmpfs /dev/shm tmpfs defaults 0 0 >> $FSTAB
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}
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# Change root and execute init
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# $1 = where to change root
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#
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change_root()
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{
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cd "$1"
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# make sure important devices are in union
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if [ ! -e dev/console ]; then mknod dev/console c 5 1; fi
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if [ ! -e dev/null ]; then mknod dev/null c 1 3; fi
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# find chroot and init
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if [ -x bin/chroot ]; then CHROOT=bin/chroot; fi
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if [ -x sbin/chroot ]; then CHROOT=sbin/chroot; fi
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if [ -x usr/bin/chroot ]; then CHROOT=usr/bin/chroot; fi
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if [ -x usr/sbin/chroot ]; then CHROOT=usr/sbin/chroot; fi
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if [ "$CHROOT" = "" ]; then fatal "Can't find executable chroot command"; fi
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if [ -x bin/init ]; then INIT=bin/init; fi
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if [ -x sbin/init ]; then INIT=sbin/init; fi
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if [ "$INIT" = "" ]; then fatal "Can't find executable init command"; fi
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mount -n -o remount,ro aufs .
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exec $CHROOT . $INIT <dev/console >dev/console 2>&1
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}
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