[Devel] Re: Per-instance devpts

[H. Peter Anvin]

Kyle Moffett wrote:
> 
> Here's my suggestion:
> 
> By default, without any mount options, use the current "legacy"
> behavior.  The devpts filesystem would point to a "global" instance on
> the whole box, controlled by the traditional /dev/ptmx device node.
> There would *NOT* be a /dev/pts/ptmx node.
> 
> If the devpts filesystem is mounted with a special option ("permount"?
> "noglobal"?), then it will create a new devpts instance associated
> with the filesystem.  A devpts mounted that way *WILL* have a magic
> /dev/pts/ptmx node.
> 
> If the kernel is built with CONFIG_DEVPTS_FORCE_PERMOUNT then the
> traditional /dev/ptmx device node will be neutered (IE: always return
> -ENODEV) and the "permount" option will be forced for all devpts
> mounts.  This will also remove the static global devpts instance.
> 

Hm.  This might work if we can get the mount behaviour to work right. 
I'll think about it.  It definitely seems like a reasonable way to get 
from A to B.

	-hpa
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