Linux根文件系统制作脚本

Linux根文件系统制作脚本

 

mkroot: 产生根文件系统目录结构及相关文件

#! /bin/bash

 

### User Configuration ###

 

# Busybox top-directory

BUSYBOX_DIR=../busybox-1.15.0

 

# Shared library directory and files

LIB_DIR=/usr/local/arm/4.3.2/arm-none-linux-gnueabi/libc/armv4t/lib

LIBS="ld-linux.so.3  ld-2.8.so  libc.so.6  libc-2.8.so"

 

# Support mdev? 1 : yes 0 : no

MDEV_ENALBE=1

 

# Prompt

PROMPT='"[AT9260]# "'

 

# Network configuration

IP_CFG='192.168.12.34 netmask 255.255.255.0'

HOST='AT9260'

 

### User Configuration End ###

 

echo  'Clean...'

if [ -d rootdir ]; then

rm -rf  rootdir

fi

 

echo  'Create root directory...'

mkdir rootdir

 

echo  'Copy busybox files...'

cp  -rd  $BUSYBOX_DIR/_install/*   rootdir/

 

cd  rootdir

echo  'Make sub directory...'

mkdir  -p  dev  etc  etc/init.d  sys proc  lib  var tmp  usr/lib  usr/etc

 

echo  'Copy shared library...'

for LIB  in   $LIBS

do

cp -d  $LIB_DIR/$LIB  lib/

done

 

echo  'Make device node...'

cd  dev

 

# The following 2 lines must present

mknod -m 755  console c  5 1 

mknod -m 755  ram0     b 1 0 

 

if  [ $MDEV_ENALBE -ne 1 ]; then

# The following lines can be removed if support "mdev"(MDEV_ENALBE=1)

mknod -m 755  tty        c 5 0  

mknod -m 755  tty0      c 4 0

mknod -m 755  tty1      c 4 1

mknod -m 755  ttyS0    c 4 64

mknod -m 755  ttyS1    c 4 65

mknod -m 755  null        c 1 3

mknod -m 755  zero      c 1 5

fi

 

echo  'Make configutation files...'

cd  ../etc

 

# /etc/ inittab

touch    inittab

chmod  644  inittab

echo  '# System initialization' >> inittab

echo  '::sysinit:/etc/init.d/rcS' >> inittab

echo   '' >> inittab

 

echo  '# Shell' >> inittab

echo  '::respawn:-/bin/sh' >> inittab

echo   '' >> inittab

 

echo  '# Shutdown' >> inittab

echo  '::shutdown:/bin/umount -a -r' >> inittab

echo   '' >> inittab

 

echo  '# Restart' >> inittab

echo  '::ctrlaltdel:/sbin/reboot' >> inittab

echo   '' >> inittab

 

# /etc/fstab

touch    fstab

chmod  644 fstab

echo  'proc       /proc        proc     defaults  0 0' >> fstab

echo  'sysfs      /sys           sysfs     defaults  0 0' >> fstab

 

# /etc/profile

touch    profile

chmod  755  profile

echo  '#! /bin/sh' >> profile

echo  'USER=root' >> profile

echo  'LOGNAME=$USER' >> profile

echo  "HOSTNAME=$HOST" >> profile

echo  "PS1=$PROMPT" >> profile

echo   'PATH=/bin:/sbin:/usr/bin:/usr/sbin' >> profile

echo   '' >> profile

echo   'export   USER  LOGNAME  HOSTNAME  PS1  PATH' >> profile

echo   '' >> profile

 

# /etc/init.d/rcS

cd  init.d

touch    rcS

chmod  755  rcS

echo  '# Mount all file system...' >> rcS

echo  '/bin/mount -a' >> rcS

echo  '' >> rcS

echo  '# Configure network interface' >> rcS

echo  '/sbin/ifconfig  lo  127.0.0.1 netmask 255.0.0.0' >> rcS

echo  '/sbin/ifconfig  eth0  down' >> rcS

echo "/sbin/ifconfig  eth0  $IP_CFG" >> rcS

echo  '/sbin/ifconfig  eth0  up' >> rcS

echo  '' >> rcS

 

# Add "mdev" support

if  [ $MDEV_ENALBE -eq 1 ]; then

echo  '# Add mdev support' >> rcS

echo  '/bin/mount  -t tmpfs mdev  /dev' >> rcS

echo  '/bin/echo /sbin/mdev > /proc/sys/kernel/hotplug ' >> rcS

echo  '/sbin/mdev -s' >> rcS

fi

echo  '' >> rcS

 

echo  'Root file system crete OK! '

echo  'Please run ./mkrd to make and install ramdisk image.'

 

mkrd：生成根文件系统镜像(适合于ramdisk)

#! /bin/bash

DEST_DIR=/tftpboot

 

echo  "Make ramdisk and mount it..."

dd if=/dev/zero of=ramdisk bs=1024 count=8192

mke2fs -m 0 -F ramdisk

 

if [ ! -d  mnt ]; then

mkdir mnt

fi

 

mount -o loop ramdisk mnt

 

echo  "Copy files.."

cp -rd  rootdir/*  mnt/

umount mnt

 

echo  "Make and install ramdisk image.."

cat ramdisk | gzip -9 > ramdisk.gz

cp -f ramdisk.gz  $DEST_DIR/ramdisk.bin

ls -l  $DEST_DIR/ramdisk.bin

rm -f  ramdisk ramdisk.gz

 

echo  "OK!"