出品 | OSC开源社区(ID:oschina2013)
《Exploring the internals of Linux v0.01》是一篇解读 Linux 内核第一版开源代码的文章。此文今天在 Reddit 和 Hacker News 都冲上了热门。
原文: https://seiya.me/blog/reading-linux-v0.01
文章介绍道,Linux 内核首个开源版本 (v0.01) 的体积非常小,仅包含 10,239 行代码。如果除去注释和空行,只剩下 8,670 行。正因它足够小,所以方便理解,是了解类 UNIX 操作系统内核内部结构的良好起点。
部分要点 & 有趣的冷知识:
v0.01 总共包含 66 个 system call,如下:
access acct alarm break brk chdir chmod
chown chroot close creat dup dup2 execve
exit fcntl fork fstat ftime getegid geteuid
getgid getpgrp setsid getpid getppid
getuid gtty ioctl kill link lock lseek
mkdir mknod mount mpx nice open pause
phys pipe prof ptrace read rename rmdir
setgid setpgid setuid setup signal stat
stime stty sync time times ulimit umask
umount uname unlink ustat utime waitpid write针对 i386 进行了深度硬编码
Linux 内核最初的名字为 "FREAX"
# Makefile for the FREAX-kernel.5 行代码实现 Kernel panic
volatile void panic(const char * s)
printk("Kernel panic: %s\n\r",s);
for(;;);Linus 当时没有 8MB RAM 的机器
* For those with more memory than 8 Mb - tough luck. I've
* not got it, why should you :-) The source is here. Change
* it. (Seriously - it shouldn't be too difficult. ...
Linux v0.01 源代码下载:https://cdn.kernel.org/pub/linux/kernel/Historic/linux-0.01.tar.gz
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