简单搭建内核调试环境--4 fsroot

跳转到目录　点这里　
cd /kernel-debug
wget https://busybox.net/downloads/busybox-1.3.0.tar.bz2
tar -zvxf busybox-1.32.0.tar.gz
cd busybox-1.32.0

跳转到目录　点这里　

编译和安装busybox 

make ARCH=x86_64 menuconfig
 Settings  --->  Build Options -[ ] Build static binary (no shared libs) (NEW) 
make ARCH=x86_64
make install　

创建根文件目录　fsroot

mkdir -p /kernel-debug/fsroot/

写一个脚本来人创建必要的目录
install.sh

mkdir -p /kernel-debug/fsroot/lib
mkdir -p /kernel-debug/fsroot/mnt
mkdir -p /kernel-debug/fsroot/home
mkdir -p /kernel-debug/fsroot/proc
mkdir -p /kernel-debug/fsroot/root
mkdir -p /kernel-debug/fsroot/sys
mkdir -p /kernel-debug/fsroot/tmp
mkdir -p /kernel-debug/fsroot/dev
mkdir -p /kernel-debug/fsroot/var/lock
mkdir -p /kernel-debug/fsroot/var/log
mkdir -p /kernel-debug/fsroot/var/run
mkdir -p /kernel-debug/fsroot/var/tmp
mkdir -p /kernel-debug/fsroot/etc/init.d/
touch /kernel-debug/fsroot/etc/inittab
touch /kernel-debug/fsroot/etc/init.d/rcS
touch /kernel-debug/fsroot/etc/fstab
touch /kernel-debug/fsroot/etc/profile
touch /kernel-debug/fsroot/etc/init.d/ifconfig-all
chmod 755 /kernel-debug/fsroot/etc/inittab
chmod 755 /kernel-debug/fsroot/etc/init.d/rcS
chmod 755 /kernel-debug/fsroot/etc/fstab
chmod 755 /kernel-debug/fsroot/etc/profile
chmod 755 /kernel-debug/fsroot/etc/init.d/ifconfig-all

sh install.sh

[hun-hh fsroot]# sh /kernel-debug/fsroot/install.sh

看一下目录结构
[hun-hh fsroot]# tree　

├── dev
├── etc
│   ├── eth0-setting
│   ├── eth1-setting
│   ├── fstab
│   ├── init.d
│   │   ├── ifconfig-all
│   │   ├── ifconfig-eth0
│   │   ├── ifconfig-eth1
│   │   └── rcS
│   ├── inittab
│   └── profile
├── home
├── install.sh
├── lib
├── mnt
├── proc
├── root
├── sys
├── tmp
└── var
    ├── lock
    ├── log
    ├── run
    └── tmp

复制到  busybox 到自己根文件目录

cp -a /kernel-debug/busybox-1.32.0/_install/* /kernel-debug/fsroot

配置一些基本的配置文件

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/inittab

#this is run first except when booting in single-user mode.
::sysinit:/etc/init.d/rcS
# /bin/sh invocations on selected ttys
::respawn:-/bin/sh
# Start an "askfirst" shell on the console (whatever that may be)
::askfirst:-/bin/sh
# Stuff to do when restarting the init process
::restart:/sbin/init
# Stuff to do before rebooting
::ctrlaltdel:/sbin/reboot
::shutdown:/sbin/swapoff -a

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/init.d/rcS

#!/bin/sh
#This is the first script called by init process
/bin/mount -a
echo /sbin/mdev>/proc/sys/kernel/hotplug
mdev -s

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/fstab

#device     mount-point     type         options       dump     fsck order
proc        /proc           proc         defaults        0        0
tmpfs       /tmp            tmpfs    　　 defaults        0        0
sysfs       /sys            sysfs        defaults        0        0
tmpfs       /dev            tmpfs        defaults        0        0

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/profile

#!/bin/sh
export HOSTNAME=farsight
export USER=root
export HOME=root
export PS1="[$USER@$HOSTNAME W]# "
#export PS1="[[33[01;32m]$USER@[33[00m][33[01;34m]$HOSTNAME[33[00m W]$ "
PATH=/bin:/sbin:/usr/bin:/usr/sbin
LD_LIBRARY_PATH=/lib:/usr/lib:$LD_LIBRARY_PATH
export PATH LD_LIBRARY_PATH
./bin/sh /etc/init.d/ifconfig-all

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/eth0-setting

IP=192.168.100.103
Mask=255.255.255.0
Gateway=192.168.100.1
DNS=8.8.8.8
MAC=00:0C:29:EE:66:18

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/eth1-setting

IP=192.168.43.230
Mask=255.255.255.0
Gateway=192.168.43.1
DNS=8.8.8.8
MAC=00:0c:29:ee:66:22

[hun-hh fsroot]# vi /kernel-debug/fsroot/etc/init.d/ifconfig-all

#!/bin/sh
if [ -f /etc/eth0-setting ] ; then
source /etc/eth0-setting
ifconfig eth1 down
ifconfig eth1 hw ether $MAC
ifconfig eth1 $IP netmask $Mask up
route add default gw $Gateway
fi
if [ -f /etc/eth1-setting ] ; then
source /etc/eth1-setting
ifconfig eth1 down
ifconfig eth1 hw ether $MAC
ifconfig eth1 $IP netmask $Mask up
route add default gw $Gateway
fi
echo Done > /dev/ttySAC2