Re: how to change the permission of /dev/ node from kernel mode.

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On Mon, 2008-11-24 at 22:35 -0800, Greg KH wrote:
> On Mon, Nov 24, 2008 at 05:02:58PM +0530, Mohamed Thalib .H wrote:
> > Hi All,
> > 
> > 	I have created a /dev/ node using class_create() and
> > class_device_create() APIs,
> > 
> > by default the created node is having root only permisson as below
> > 
> > crw-rw---- 1 root root 251, 0 2008-11-24 16:56 /dev/sp
> > 
> > how can I give acces permission so every one can access that node
> 
> You can't do that from the kernel, you must write a udev rule.
> 
> > I dont want to use chmod in user space intead it should be done in the
> > kernel mode itsel .Is the any way to this stuff.
> 
> No, it can not be done in the kernel, as the kernel did not create the
> device node in the first place, udev did.
> 
> thanks,
> 
> greg k-h
> 
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But i am using a kernel api to create a node then why cant i specify the
mode for. 

I dont want to do it in userspace.

-- 
Regards,
Mohamed Thalib .H


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