驱动如何区分出次设备号。 read/write接口函数要能够获得字符设备结构体变量地址。 什么是文件描述符？ Linux 中一切都可以看作文件，包括普通文件、链接文件、Socket 以及设备驱动等，对其进行相关操作时，都可能会创建对应的文件描述符。文件描述符（file ...

Linux操作系统秉承“一切皆文件”的设计思想，将所有的设备页看作文件来进行处理。目前的Linux版本中，当内核发现一个块设备时，用户空间会利用udev这一数据结构以及相关的操作来为块设备创建其所需的块设备文件。 关于块设备文件，可以从两方面来进行理解 ...

The ls command is probably one of the first commands that anyone using Unix learns, but it only shows a small portion of the information that is available with the stat command. The stat command pulls ...

It doesn’t take very much time working on a Unix system before your attention is drawn to the mysteries of the inode, especially these days with the concept of metadata getting so much public ...

A lot of information is available about individual files on a Unix system. For example, the ls -l command will display the permissions matrix and ls -i will display a file’s inode. But, if we want to ...

I am currently writing a version of File Tree Walk for my systems programming class for the UNIX operating system. I was wondering if there was a verion of the stat function that takes an inode number ...

i am currently taking an OS course and have run across this problem.<BR><BR>Assume a Unix System V FS where each inode has 10 direct blocks , 1 indirect block and 1 double indirect block.<BR>Disk ...