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DockerでLinux、QEMU、Busyboxのソースコードをビルドし、QEMUでLinuxを起動する
tommy34Linux、QEMU、Busyboxのバージョンはスクラップ作成日時点（2024/02/15）での最新のバージョンを使用する
- Linux v6.7
- QEMU v8.2.1
- BusyBox v1.36.1
tommy34Dockerfile
FROM ubuntu:24.04
ENV TZ=Asia/Tokyo
ENV LINUX_VERSION=6.7
ENV BUSYBOX_VERSION=1.36.1
ENV QEMU_VERSION=8.2.1
RUN ln -snf /usr/share/zoneinfo/${TZ} /etc/localtime && echo ${TZ} > /etc/timezone && \
sed -i 's@archive.ubuntu.com@ftp.jaist.ac.jp/pub/Linux@g' /etc/apt/sources.list && \
echo "bind 'set bell-style none'" >> .bashrc && \
apt-get update && \
apt-get install -y --no-install-recommends build-essential libncurses-dev bison \
flex libssl-dev libelf-dev bc cpio git ca-certificates python3 python3-venv \
ninja-build pkg-config libglib2.0-dev libpixman-1-dev wget cloc && \
apt-get clean && \
rm -rf /var/lib/apt/lists/* && \
wget -q --no-check-certificate https://github.com/torvalds/linux/archive/refs/tags/v${LINUX_VERSION}.tar.gz && \
tar xf v${LINUX_VERSION}.tar.gz && \
wget -q --no-check-certificate https://busybox.net/downloads/busybox-${BUSYBOX_VERSION}.tar.bz2 && \
tar xf busybox-${BUSYBOX_VERSION}.tar.bz2 && \
wget -q --no-check-certificate https://github.com/qemu/qemu/archive/refs/tags/v${QEMU_VERSION}.tar.gz && \
tar xf v${QEMU_VERSION}.tar.gz
WORKDIR /linux-${LINUX_VERSION}
RUN make defconfig && make -j$(nproc)
WORKDIR /busybox-${BUSYBOX_VERSION}
RUN make defconfig && \
sed -i.bak 's/^#.*CONFIG_STATIC.*/CONFIG_STATIC=y/' .config && \
make -j$(nproc) && \
make install && \
cd _install && \
mkdir proc sys dev run etc etc/init.d \
mknod -m 600 console c 5 1 && \
mknod -m 666 null c 1 3 && \
mknod -m 666 tty c 5 0 && \
mknod ram b 1 0 && \
echo "#!/bin/sh\n\
mount -v --bind /dev /dev\n\
mount -v --bind /dev/pts /dev/pts\n\
mount -vt proc proc /proc\n\
mount -vt sysfs sysfs /sys\n\
mount -vt tmpfs tmpfs /run\n\
/sbin/mdev -s\n" > etc/init.d/rcS && \
chmod +x etc/init.d/rcS && \
find . | cpio -o -H newc | gzip > ../rootfs.img
WORKDIR /qemu-${QEMU_VERSION}
RUN ./configure --target-list=x86_64-softmmu && \
make -j$(nproc)
WORKDIR /
$ docker --version
Docker version 24.0.5, build ced0996
$ uname -a
Linux MyComputer 5.15.133.1-microsoft-standard-WSL2 #1 SMP Thu Oct 5 21:02:42 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
コンテナのビルド
$ docker build -t qemu_linux .
[+] Building 2.5s (12/12) FINISHED docker:default
=> [internal] load .dockerignore 0.5s
=> => transferring context: 2B 0.0s
=> [internal] load build definition from Dockerfile 0.4s
=> => transferring dockerfile: 2.51kB 0.1s
=> [internal] load metadata for docker.io/library/ubuntu:24.04 0.0s
=> [1/9] FROM docker.io/library/ubuntu:24.04 0.0s
=> CACHED [2/9] RUN ln -snf /usr/share/zoneinfo/Asia/Tokyo /etc/localtime && echo Asi 0.0s
=> CACHED [3/9] WORKDIR /linux-6.7 0.0s
=> CACHED [4/9] RUN make defconfig && make -j$(nproc) 0.0s
=> CACHED [5/9] WORKDIR /busybox-1.36.1 0.0s
=> CACHED [6/9] RUN make defconfig && sed -i.bak 's/^#.*CONFIG_STATIC.*/CONFIG_STAT 0.0s
=> CACHED [7/9] WORKDIR /qemu-8.2.1 0.0s
=> CACHED [8/9] RUN ./configure --target-list=x86_64-softmmu && make -j$(nproc) 0.0s
=> exporting to image 0.2s
=> => exporting layers 0.0s
=> => writing image sha256:443d0e0f7f403bbec46b15684044aabb3168f16438bd5f5be883258828 0.1s
=> => naming to docker.io/library/qemu_linux 0.1s
What's Next?
View summary of image vulnerabilities and recommendations → docker scout quickview
$ docker run -it --rm --name qemu_linux_container qemu_linux bash
root@193ac5e6a27f:/# qemu-8.2.1/build/qemu-system-x86_64 --version
QEMU emulator version 8.2.1
Copyright (c) 2003-2023 Fabrice Bellard and the QEMU Project developers
root@193ac5e6a27f:/# qemu-8.2.1/build/qemu-system-x86_64 \
-m 128M \
-kernel linux-6.7/arch/x86/boot/bzImage \
-initrd busybox-1.36.1/rootfs.img \
--append "root=/dev/ram rw console=ttyS0 rdinit=/sbin/init init=/sbin/init" \
-chardev stdio,id=char0,mux=on,logfile=linux.log,signal=off \
-serial chardev:char0 \
-mon chardev=char0
VNC server running on 127.0.0.1:5900
[ 0.000000] Linux version 6.7.0 (root@buildkitsandbox) (gcc (Ubuntu 13.2.0-13ubuntu1) 13.2.0, GNU ld (GNU Binutils for Ubuntu) 2.42) #1 SMP PREEMPT_DYNAMIC Thu Feb 15 21:30:02 JST 2024
[ 0.000000] Command line: root=/dev/ram rw console=ttyS0 rdinit=/sbin/init init=/sbin/init
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x0000000007fdffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000007fe0000-0x0000000007ffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x000000fd00000000-0x000000ffffffffff] reserved
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] APIC: Static calls initialized
[ 0.000000] SMBIOS 3.0.0 present.
[ 0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 0.000000] tsc: Fast TSC calibration using PIT
[ 0.000000] tsc: Detected 3191.947 MHz processor
[ 0.016644] last_pfn = 0x7fe0 max_arch_pfn = 0x400000000
[ 0.017362] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs
...
[ 3.126874] Freeing unused kernel image (initmem) memory: 2648K
[ 3.129105] Write protecting the kernel read-only data: 26624k
[ 3.133544] Freeing unused kernel image (rodata/data gap) memory: 1640K
[ 3.445518] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[ 3.447824] Run /sbin/init as init process
mount: mounting /dev/pts on /dev/pts failed: No such file or directory
[ 3.654216] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3
[ 3.673279] mdev (54) used greatest stack depth: 14032 bytes left
Please press Enter to activate this console.
~ # pwd
/
~ # ls
1 c etc null root sys
5 console linuxrc proc run tty
bin dev mknod ram sbin usr
~ # echo Hello
Hello
~ # uname -a
Linux (none) 6.7.0 #1 SMP PREEMPT_DYNAMIC Thu Feb 15 21:30:02 JST 2024 x86_64 GNU/Linux
~ # ps
PID USER TIME COMMAND
1 0 0:01 init
2 0 0:00 [kthreadd]
3 0 0:00 [pool_workqueue_]
4 0 0:00 [kworker/R-rcu_g]
5 0 0:00 [kworker/R-rcu_p]
6 0 0:00 [kworker/R-slub_]
7 0 0:00 [kworker/R-netns]
8 0 0:00 [kworker/0:0-eve]
9 0 0:00 [kworker/0:0H-ev]
10 0 0:00 [kworker/0:1-mm_]
11 0 0:00 [kworker/u2:0-ev]
12 0 0:00 [kworker/R-mm_pe]
13 0 0:00 [rcu_tasks_kthre]
14 0 0:00 [ksoftirqd/0]
15 0 0:00 [rcu_preempt]
16 0 0:00 [migration/0]
17 0 0:00 [cpuhp/0]
18 0 0:00 [kdevtmpfs]
19 0 0:00 [kworker/R-inet_]
20 0 0:00 [kauditd]
21 0 0:00 [kworker/u2:1-ev]
22 0 0:00 [oom_reaper]
23 0 0:00 [kworker/R-write]
24 0 0:00 [kcompactd0]
25 0 0:00 [kworker/R-kbloc]
26 0 0:00 [kworker/R-ata_s]
27 0 0:00 [kworker/R-md]
28 0 0:00 [kworker/R-md_bi]
29 0 0:00 [kworker/u2:2-ev]
30 0 0:00 [kworker/0:1H-kb]
31 0 0:00 [kworker/R-rpcio]
32 0 0:00 [kworker/R-xprti]
33 0 0:00 [kworker/R-cfg80]
34 0 0:00 [kworker/u2:3]
35 0 0:00 [kswapd0]
36 0 0:00 [kworker/R-nfsio]
37 0 0:00 [kworker/R-acpi_]
38 0 0:00 [scsi_eh_0]
39 0 0:00 [kworker/R-scsi_]
40 0 0:00 [scsi_eh_1]
41 0 0:00 [kworker/R-scsi_]
42 0 0:00 [kworker/0:2]
43 0 0:00 [kworker/R-mld]
44 0 0:00 [kworker/R-ipv6_]
55 0 0:00 -/bin/sh
56 0 0:00 init
57 0 0:00 init
58 0 0:00 init
62 0 0:00 ps
~ #
~ # ls /usr/bin
[ du less pkill sort unexpand
[[ dumpleases logger pmap split uniq
ascii eject logname printf ssl_client unix2dos
awk env lpq pscan strings unlink
basename envdir lpr pstree sum unlzma
bc envuidgid lsof pwdx sv unshare
beep expand lspci readlink svc unxz
blkdiscard expr lsscsi realpath svok unzip
bunzip2 factor lsusb renice tac uptime
bzcat fallocate lzcat reset tail users
bzip2 fgconsole lzma resize taskset uudecode
cal find man rpm2cpio tcpsvd uuencode
chpst flock md5sum runsv tee vlock
chrt fold mesg runsvdir telnet volname
chvt free microcom rx test w
cksum ftpget mkfifo script tftp wall
clear ftpput mkpasswd seq time wc
cmp fuser nc setfattr timeout wget
comm groups nl setkeycodes top which
crc32 hd nmeter setsid tr who
crontab head nohup setuidgid traceroute whoami
cryptpw hexdump nproc sha1sum traceroute6 whois
cut hexedit nsenter sha256sum tree xargs
dc hostid nslookup sha3sum truncate xxd
deallocvt id od sha512sum ts xz
diff install openvt showkey tsort xzcat
dirname ipcrm passwd shred tty yes
dos2unix ipcs paste shuf ttysize
dpkg killall patch smemcap udhcpc6
dpkg-deb last pgrep softlimit udpsvd
~ #
Linuxのソースコードの行数は約2780万行
BusyBoxは約26万行
QEMUは約320万行
root@193ac5e6a27f:/# cloc linux-6.7
87623 text files.
74198 unique files.
16422 files ignored.
github.com/AlDanial/cloc v 1.98 T=480.52 s (154.4 files/s, 76211.7 lines/s)
---------------------------------------------------------------------------------------
Language files blank comment code
---------------------------------------------------------------------------------------
C 33241 3399886 2644658 17563162
C/C++ Header 24065 724066 1404120 7359984
Assembly 1323 48367 98578 1232963
reStructuredText 3420 169724 70233 463015
JSON 597 2 0 403264
YAML 3803 70159 17549 332571
Text 1769 27249 0 123969
Bourne Shell 994 31286 21278 122533
make 2932 11277 12153 52405
Python 197 9774 8453 48486
SVG 74 90 1171 48159
Perl 69 7577 5184 37721
Rust 61 1456 9387 8838
DOS Batch 1465 103 0 5350
yacc 10 710 413 4946
PO File 6 948 1088 3733
lex 10 360 312 2202
C++ 7 336 127 1800
Bourne Again Shell 57 395 311 1633
awk 12 195 118 1076
D 10 0 0 722
CSV 10 74 0 660
Glade 1 58 0 603
NAnt script 2 152 0 542
Cucumber 1 34 58 198
TeX 1 6 74 156
TNSDL 2 33 0 140
CSS 3 41 60 136
Linker Script 4 23 11 115
Windows Module Definition 2 15 0 113
m4 1 15 1 95
Clojure 33 0 0 75
XSLT 5 13 26 61
Umka 2 17 0 45
MATLAB 1 17 37 35
Markdown 1 9 0 27
vim script 1 3 12 27
Ruby 1 4 0 25
INI 2 2 0 11
HTML 1 1 5 10
sed 1 2 5 5
TOML 1 1 9 2
---------------------------------------------------------------------------------------
SUM: 74198 4504480 4295431 27821613
---------------------------------------------------------------------------------------
root@193ac5e6a27f:/# cloc busybox-1.36.1
4609 text files.
2179 unique files.
3460 files ignored.
github.com/AlDanial/cloc v 1.98 T=17.06 s (127.8 files/s, 21461.0 lines/s)
--------------------------------------------------------------------------------
Language files blank comment code
--------------------------------------------------------------------------------
C 685 28569 62131 186278
C/C++ Header 1153 1363 2729 33738
Text 73 2793 0 13461
Bourne Shell 188 1732 1687 9778
HTML 10 2062 32 7962
DOS Batch 36 18 0 2404
Assembly 5 153 479 1897
C++ 1 166 62 1197
make 7 306 466 909
Glade 1 56 0 592
yacc 1 93 20 570
Perl 3 100 185 337
lex 1 40 12 303
NAnt script 1 84 0 260
diff 4 42 85 241
Bourne Again Shell 5 51 94 238
Python 1 12 15 113
IDL 1 0 0 33
awk 1 2 8 30
D 1 3 0 29
bc 1 10 0 25
--------------------------------------------------------------------------------
SUM: 2179 37655 68005 260395
--------------------------------------------------------------------------------
root@193ac5e6a27f:/# cloc qemu-8.2.1/
14488 text files.
12637 unique files.
5518 files ignored.
github.com/AlDanial/cloc v 1.98 T=86.80 s (145.6 files/s, 50241.2 lines/s)
---------------------------------------------------------------------------------------
Language files blank comment code
---------------------------------------------------------------------------------------
C 4607 269051 230125 1680988
D 2206 0 0 518251
C/C++ Header 2842 67975 102278 412201
Python 1266 58735 75688 280913
Pascal 64 35271 257190 107593
JSON 282 1314 0 44020
reStructuredText 253 12173 4885 31031
Text 72 3009 0 23109
Bourne Again Shell 249 5549 7962 18403
Assembly 237 2969 3099 15343
Meson 220 1050 658 10394
Bourne Shell 83 1111 1513 10081
Haxe 5 1518 13 7374
Perl 7 1088 864 6175
make 37 666 777 6124
Windows Module Definition 12 1403 0 5559
CSV 3 0 0 5266
HTML 14 821 1 5208
YAML 41 301 369 3166
Objective-C 4 446 412 2484
XML 51 495 1383 2332
SVG 2 2 2 1982
C++ 6 289 160 1444
yacc 2 114 95 1282
Windows Resource File 3 141 0 1023
lex 3 111 40 856
SWIG 1 258 28 832
Linker Script 21 115 239 738
TeX 2 82 1 557
PO File 9 172 40 465
WiX source 1 6 0 176
Markdown 6 97 47 171
CMake 2 30 29 125
TNSDL 2 24 0 121
PowerShell 2 50 95 119
CSS 1 33 29 99
INI 4 16 0 84
DenizenScript 1 12 14 43
Fish Shell 1 13 14 42
Dockerfile 1 4 6 24
Rust 1 6 0 22
GLSL 3 6 0 21
IDL 1 1 0 19
TOML 2 5 23 15
C Shell 1 9 5 12
Windows Message File 1 1 0 8
JavaScript 1 1 1 7
Lisp 1 0 0 2
DOS Batch 1 0 0 1
---------------------------------------------------------------------------------------
SUM: 12637 466543 688085 3206305
---------------------------------------------------------------------------------------
root@193ac5e6a27f:/#