Linux filesystem configuration infrastructure

[greg@kroah.com (Greg KH)]

On Mon, Aug 04, 2014 at 10:20:35AM +0530, Sankar P wrote:
> Hi,
> 
> I have a simple filesystem that I did for learning purpose
> https://github.com/psankar/simplefs
> 
> Now, I would like to add a few settings to my filesystem (such as the
> number of blocks that should be allocated in an extent by default,
> maximum fragmentation score after which defrag should be automatically
> handled etc.) I would like to have the ability to not just set these
> settings, but export them to a file and restore these settings later.
> Is there some kind of a settings infrastructure code that is available
> in the linux kernel

configfs, but usually a filesystem doesn't need anything so complex,
just use the "normal" mount option way and you should be fine.

> I would also like to have some kind of validation system also as part
> of the settings interface. For example: If a setting can accept only
> ints, trying to set a string to that should be disabled, min and max
> values (range) for values of settings, etc.

Again, configfs is good for "complex" configurations.

Good luck,

greg k-h