Re: [PATCH] DevFS support for /dev/cpu/X/(cpuid|msr)

H. Peter Anvin
2002-01-09T03:47:46Z

Richard Gooch wrote:

>>>
>>So you chown an entry, then a module is unloaded and reloaded, now
>>what happens?
>>
>>It's the old "virtual filesystem which really wants persistence"
>>issue again...
>>
>
> Works beautifully with devfs+devfsd :-)
>
> Permissions get saved elsewhere in the namespace (perhaps even to the
> underlying /dev) as you chown(2)/chmod(2)/mknod(2), and are restored
> when entries are (re)created and/or at startup.
>
> My /dev has persistence behaviour which looks like a FS with backing
> store.
>

Yes, after quite a few years it finally got in there. This is a Good
Thing[TM]. Now apply the same problem to /proc.

-hpa