understanding of sysfs.
madhu.sk89 at gmail.com
Mon May 29 01:28:09 EDT 2017
On Tue, May 23, 2017 at 2:53 PM, Greg KH <greg at kroah.com> wrote:
> On Tue, May 23, 2017 at 12:58:07PM +0530, Madhu K wrote:
> > Hi Greg,
> > Thanks for your response.
> > On Tue, May 23, 2017 at 12:04 PM, Greg KH <greg at kroah.com> wrote:
> > On Tue, May 23, 2017 at 11:58:31AM +0530, Madhu K wrote:
> > > Hi All,
> > >
> > > why there is no character device entry present in /sys/class?
> where as
> > block
> > > and net device entries are present.
> > I see character devices there, but not the device nodes. I don't see
> > block device nodes there either.
> > If I am wrong please correct me, there is a folder called block in
> > is block not containing block device nodes?
> Nope, look closer :)
I checked the block folder, the entries which are present in
/sys/class/block are softlink to /sys/devices nodes. what i understand from
this is, all block net and char node entries are present in /sys/devices.
Am i correct?
> > > Not only in /sys/class, for that matter why there is no character
> > > entries present in /sys file system.
> > What do you exactly mean by "character device entries"?
> > like block and net why there is no char folder
> Again, look closer please.
> > > please help me to understand for what purpose char devices are
> kept away
> > from /
> > > sys file system.
> > Have you read the driver model chapter in the Linux Device drivers
> > or the in-kernel sysfs documentation?
> Again, please read all of the copious documentation that we have written
> already about this topic. If after that, you still have questions, I
> will be more than glad to help answer them.
> greg k-h
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Kernelnewbies