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 ...

Some files on a Linux system can appear in more than one location. Follow these instructions to find and identify these "identical twins" and learn why hard links can be so advantageous. Identifying ...

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 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 ...