Re: How to access a file from kernel module

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On 9/16/05, Stephen Hemminger <shemminger@xxxxxxxx> wrote:
> On Fri, 16 Sep 2005 15:38:14 +0100 (BST)
> yenganti pradeep <pradeepls143@xxxxxxxxxxx> wrote:
> 
> >
> > Hi all,
> >        Is there any way to access a file from kernel
> > module??
> >
> > Thanx in advance,
> > Pradeep.
> 
> Almost always a bad idea. Among other problems:
>         * it ties your kernel module down to a particular file location.
>         * you end up tightly binding your kernel module and the file format
>         * the kernel namespace is not uniform and flat (given unionfs, bind
>           mount and chroot); a path name has no real guaranteed meaning!
> 
> The correct way to do it if you have to is pass the information
> down through some other channel.  If you need a file handle for I/O
> then pass the file handle, not the name.
> -

Yes you are right that its not good to access a file from the kernel
and information must be passed through some other ways like
sysfs/ioctls etc , but if any one need to do it to make things simpler
than it can be done through doing system call from with-in the kernel
.........


-- 
Fawad Lateef
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