A critical look at sysfs attribute values

I would think that's an easy denial of service, unless you only allow root to take snapshots (which isn't very helpful). for example, just write a shell script that loops asking for as many snapshots as it can in as many sysfs directories as it can find.. chew up all the kernel memory.

it would probably be better to automatically provide a 'snapshot' file in every directory which can be read to get a consistent view of all files in the directory in some 'well known' format, eg 'key: value' per line like HTTP/SMTP etc.