Ubuntu目前有個項目叫Ubuntu for Android(http://www.ubuntu.com/devices/android),看起來非常cool:
它的原理在http://www.ubuntu.com/devices/android並無介紹。但是我們猜測可以用chroot配合實現一個最簡單的Ubuntu for Android。
我們爲Andriod編寫一個腳本Ubuntu.sh,在該腳本中啓動Ubuntu的文件系統,透過chroot進行:
#!/system/bin/sh if [ `id -u` != "0" ] then echo -e "\033[33m Becoming root \033[0m" su -c bu exit 1 fi echo -e "\033[33m Setting some stuff up..\033[0m " export bin=/system/bin export mnt=/data/local/ubuntu export PATH=$bin:/usr/bin:/usr/sbin:/bin:$PATH export TERM=linux export HOME=/root if [ ! -d $mnt ] then mkdir $mnt fi echo -e "\033[33m Mounting the Linux Image \033[0m" #replace /dev/block/mmcblk1p2 by the partition Ubuntu p_w_picpath is replaced #it might be a loop p_w_picpath busybox mount -t ext4 -o noatime,nodiratime /dev/block/mmcblk1p2 $mnt busybox mount -t devpts devpts $mnt/dev/pts busybox mount -t proc proc $mnt/proc busybox mount -t sysfs sysfs $mnt/sys echo -e "\033[33m Setting Up Networking\033[0m" sysctl -w net.ipv4.ip_forward=1 echo "nameserver 8.8.8.8" >> $mnt/etc/resolv.conf echo "nameserver 8.8.4.4" >> $mnt/etc/resolv.conf echo "127.0.0.1 localhost" > $mnt/etc/hosts echo -e "\033[33m Mounting sdcard in /mnt/sdcard\033[0m" if [ ! -d $mnt/mnt/sdcard ] then mkdir $mnt/mnt/sdcard fi busybox mount --bind /mnt/sdcard/ $mnt/mnt/sdcard echo -e "\033[33m Entering CHROOT \033[0m" echo " " chroot $mnt /bin/bash echo " " echo -e "\033[33m Shutting down CHROOT\033[0m" echo -e "\033[33m umount $mnt/mnt/sdcard\033[0m" busybox umount $mnt/mnt/sdcard sysctl -w net.ipv4.ip_forward=0 echo -e "\033[33m umount $mnt/dev/pts\033[0m" busybox umount $mnt/dev/pts echo -e "\033[33m umount $mnt/proc\033[0m" busybox umount $mnt/proc echo -e "\033[33m umount $mnt/sys\033[0m" busybox umount $mnt/sys echo -e "\033[33m umount $mnt\033[0m" busybox fuser -k $mnt busybox umount $mnt
其中的一行:
busybox mount -t ext4 -o noatime,nodiratime /dev/block/mmcblk1p2 $mnt
是爲了mount Ubuntu的rootfs,我們的實驗中Ubuntu的rootfs存放在/dev/block/mmcblk1p2。該文件系統通過rootstack得到:
sudo rootstock -f ubuntu -l <yourname> -p <yourpassword> -i 1G --seed linux-p_w_picpath-omap,build-essential,tightvncserver, lxde
將得到的tgz包解壓到我們sd卡的分區2。
運行Ubuntu.sh,進入到了Ubuntu的根文件系統,並執行了bash,之後我們開一個vncserver:
export USER=root vncserver -geometry 800x480
在Android端,通過VNCClient軟件連接到127.0.0.1:5901即可。