Linux kernel boot process

最新推荐文章于 2024-06-10 15:41:09 发布

原创最新推荐文章于 2024-06-10 15:41:09 发布 · 506 阅读

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本文详细介绍了Linux内核的启动过程，包括挂载根文件系统、启动初始化进程/sbin/init、读取配置文件/etc/inittab、执行/sbin/rc脚本以及启动核心服务如syslogd和telnetd等。

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Linux kernel boot process

    Linux kernel mounts the root filesystem.
    The kernel starts the first user process /sbin/init provided by Busybox.
    /sbin/init reads /etc/inittab (From the SDK: linux/embedded_rootfs/etc-files/inittab).
    /etc/inittab starts the shell script /sbin/rc (From the SDK: linux/embedded_rootfs/etc-files/rc).
    /sbin/rc mounts the kernel pseudo filesystems /proc, /dev/shm, and /dev/pts.
    /sbin/rc brings up the loopback network device with the IP address 127.0.0.1.
    /sbin/rc starts syslogd provided by Busybox.
    /sbin/rc starts telnetd provided by Busybox.
    /sbin/rc exits returning control in /sbin/init.
    /etc/inittab tells /sbin/init to spawn an interactive shell.
    The user interactive shell prompt appears.