Re: why mknod() ??

[Sri Ram Vemulpali <sri.ram.gmu06@xxxxxxxxx>]

mknod is also used by unified device management system for dynamic creation of special device files in /dev. Whenever new device is attached to system the plug and play framework calls this program to create device interface.

On Tue, Sep 21, 2010 at 3:52 PM, Manish Katiyar <mkatiyar@xxxxxxxxx> wrote:

On Tue, Sep 21, 2010 at 8:06 AM, mohit verma <mohit89mlnc@xxxxxxxxx> wrote:
> hey guys,
> i have a question silly question :
>
> as we can create the simple files with open,creat and for directories there
> is mkdir  system calls.
> so what is the need of mknod() to create special files and as well as "
> ordinary files" ?
> why can't  we wrap the special file building code in one of  open,creat or
> mkdir system calls?
>

Because they are special files and some of the commands/operations
(eg.. truncate) may not be available for them. If you look at the
implementation if is kind of a wrapper over regular create.



--
Thanks -
Manish
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Regards,

Sri.