独钓寒江雪

debootstrap

说明

用来生成 rootfs

步骤

准备

debian

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sudo apt install qemu-user-static debootstrap binfmt-support

manjaro

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sudo pacman -S qemu-user-static debootstrap qemu-user-static-binfmt

创建

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# 用 https 的源
sudo debootstrap --arch armhf --foreign --no-check-gpg bookworm deb_fs https://mirrors.ustc.edu.cn/debian

基础配置

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sudo cp /usr/bin/qemu-arm-static ./deb_fs/usr/bin/

# chroot 需要手动 mount 一大堆
sudo systemd-nspawn -D ./deb_fs

或者

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sudo bwrap \
  --bind ./deb_fs / \
  --dev /dev \
  --dev-bind /dev/pts /dev/pts \
  --dev-bind /dev/null /dev/null \
  --dev-bind /dev/zero /dev/zero \
  --dev-bind /dev/random /dev/random \
  --dev-bind /dev/urandom /dev/urandom \
  --proc /proc \
  --ro-bind /sys /sys \
  --tmpfs /tmp \
  --setenv HOME /root \
  --setenv PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
  /bin/bash
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/debootstrap/debootstrap --second-stage
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apt install -y neovim

profile

/etc/profile.d/path.sh

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export PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

/etc/profile.d/ls.sh

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alias ll='ls -la --color=auto' 2>/dev/null
alias l.='ls --color=auto -d .*' 2>/dev/null
alias ls='ls --color=auto' 2>/dev/null

/etc/profile.d/proxy.sh

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alias pon="export HTTP_PROXY=http://127.0.0.1:8118 HTTPS_PROXY=http://127.0.0.1:8118 ALL_PROXY=socks5://127.0.0.1:1080 NO_PROXY=localhost,127.0.0.1,10.0.2.1"
alias poff="unset HTTP_PROXY HTTPS_PROXY ALL_PROXY NO_PROXY"

/etc/profile.d/python.sh

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export PYTHONPYCACHEPREFIX=/dev/null
export UV_INDEX="https://mirrors.aliyun.com/pypi/simple"

~/.bashrc

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[[ -f /etc/profile ]] && source /etc/profile

必备工具

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source /etc/profile
apt install -y iputils-ping net-tools ncat file

测试

制作镜像

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# dd if=/dev/zero of=rootfs.ext4 bs=1M count=512
dd if=/dev/zero of=rootfs.ext4 bs=1G count=1
sudo mkfs.ext4 rootfs.ext4

mkdir mnt_fs
sudo mount -o loop rootfs.ext4 mnt_fs

sudo cp -rf ./deb_fs/* ./mnt_fs/

sudo umount mnt_fs
rm -rf mnt_fs

qemu

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qemu-system-arm \
  -M vexpress-a9 \
  -m 512M \
  -kernel ~/downloads/linux-5.10.191/output/arch/arm/boot/zImage \
  -dtb ~/downloads/linux-5.10.191/output/arch/arm/boot/dts/vexpress-v2p-ca9.dtb \
  -nographic \
  -append "root=/dev/mmcblk0 rw console=ttyAMA0" \
  -sd ~/downloads/rootfs.ext4
linuxkernel