How do you create special files like named pipes and device files?

Question

Hello
How do you create special files like named pipes and device files?
please reply me. i am waiting for your reply.
Thanx

Answer 1

The system call mknod creates special files in the following sequence.
1. kernel assigns new inode,
2. sets the file type to indicate that the file is a pipe, directory or special file,
3. If it is a device file, it makes the other entries like major, minor device numbers.
For example:
If the device is a disk, major device number refers to the disk controller and minor device number is the disk.