Linux:重走LFS之路:(七) 基础系统编译准备
June 1, 2015
(题图来自: techradar.com)
Table of Contents
准备虚拟内核文件系统
建立系统挂载目录
mkdir -pv $LFS/{dev,proc,sys,run}
创建初始设备节点
sudo mknod -m 600 $LFS/dev/console c 5 1 sudo mknod -m 666 $LFS/dev/null c 1 3
挂载并填充设备目录
sudo mount -v –bind /dev $LFS/dev
挂载虚拟内核文件系统
mount -vt devpts devpts $LFS/dev/pts -o gid=5,mode=620 mount -vt proc proc $LFS/proc mount -vt sysfs sysfs $LFS/sys mount -vt tmpfs tmpfs $LFS/run
建立一个符号链接
if [ -h $LFS/dev/shm ]; then mkdir -pv $LFS/$(readlink $LFS/dev/shm) fi
这时候就可以chroot到lfs的工具环境里面来进行基础系统的编译,但是在这之前需要先在$LFS中建立root目录,然后再chroot进去编译。
进入chroot环境
sudo chroot “$LFS” /tools/bin/env -i HOME=/root TERM=”$TERM” PS1=’${debian_chroot:+($debian_chroot)}[33[01;31m][A][33[01;33m]u[33[00m]@[33[01;32m]h:[33[01;34m]w[33[00m]$ ‘ PATH=/bin:/usr/bin:/sbin:/usr/sbin:/tools/bin /tools/bin/bash –login +h
建立必要目录、符号链接与文件
mkdir -pv /{bin,boot,etc/{opt,sysconfig},home,lib/firmware,mnt,opt} mkdir -pv /{media/{floppy,cdrom},sbin,srv,var} install -dv -m 0750 /root install -dv -m 1777 /tmp /var/tmp mkdir -pv /usr/{,local/}{bin,include,lib,sbin,src} mkdir -pv /usr/{,local/}share/{color,dict,doc,info,locale,man} mkdir -v /usr/{,local/}share/{misc,terminfo,zoneinfo} mkdir -v /usr/libexec mkdir -pv /usr/{,local/}share/man/man{1..8} case $(uname -m) in x86_64) ln -sv lib /lib64 ln -sv lib /usr/lib64 ln -sv lib /usr/local/lib64 ;; esac mkdir -v /var/{log,mail,spool} ln -sv /run /var/run ln -sv /run/lock /var/lock mkdir -pv /var/{opt,cache,lib/{color,misc,locate},local}
建立基本文件和符号链接
ln -sv /tools/bin/{bash,cat,echo,pwd,stty} /bin ln -sv /tools/bin/perl /usr/bin ln -sv /tools/lib/libgcc_s.so{,.1} /usr/lib ln -sv /tools/lib/libstdc++.so{,.6} /usr/lib sed ‘s/tools/usr/’ /tools/lib/libstdc++.la > /usr/lib/libstdc++.la ln -sv bash /bin/sh ln -sv /proc/self/mounts /etc/mtab
创建用户存储文件passwd
cat > /etc/passwd << “EOF” root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/dev/null:/bin/false daemon:x:6:6:Daemon User:/dev/null:/bin/false messagebus:x:18:18:D-Bus Message Daemon User:/var/run/dbus:/bin/false nobody:x:99:99:Unprivileged User:/dev/null:/bin/false EOF
创建用户组文件group
cat > /etc/group << “EOF” root:x:0: bin:x:1:daemon sys:x:2: kmem:x:3: tape:x:4: tty:x:5: daemon:x:6: floppy:x:7: disk:x:8: lp:x:9: dialout:x:10: audio:x:11: video:x:12: utmp:x:13: usb:x:14: cdrom:x:15: adm:x:16: messagebus:x:18: systemd-journal:x:23: input:x:24: mail:x:34: nogroup:x:99: users:x:999: EOF
这时候可以把用户名位置那讨厌的“I have no name!”去掉了
exec /tools/bin/bash –login +h
用户名成功变身root
再建立一些必要的日志文件,就可以进行系统编译啦
touch /var/log/{btmp,lastlog,wtmp} chgrp -v utmp /var/log/lastlog chmod -v 664 /var/log/lastlog chmod -v 600 /var/log/btmp
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