understanding of sysfs.
greg at kroah.com
Mon May 29 01:43:09 EDT 2017
On Mon, May 29, 2017 at 10:58:09AM +0530, Madhu K wrote:
> 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
> > 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 /sys/
> > 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 do you exactly mean by "nodes"? /sys/class/block/ points to the
block device "class devices" in the kernel device hierarchy, just like
the other /sys/class/* entries point to other class devices.
> what i understand from this is, all block net and char node entries
> are present in /sys/devices. Am i correct?
Again, what do you mean by a "node"? Did you read the documentation
about sysfs and the driver model?
More information about the Kernelnewbies