> YAMAMOTO Takashi wrote:
> 
> > how about something like the attached patch?
> 
> this looks okay. what I dislike is that it's a bit more complicated than
> I wanted (create + open, use, unuse, close+ destroy).

i separated diskuser_create() from disk_use(), so that you can call
diskuser_add_some_more_info() in the middle of them.

> > "query" part is not yet, but it shouldn't be too hard.
> 
> I'd like to see this implemented first, and how it should be used.

i'm thinking something like this:

	disk_userlist_t *list;
	error = diskuserlist_query(vp, &list);
	...
	diskuserlist_foreach(iterator, list) {
		if (diskuser_is_a(iterator, "swap")) {
			/* the partition is used as swap */
			...
		}
	}
	...
	diskuserlist_done(list);

> also: do you think we could use this interface to solve another problem
> I mentioned a while ago? see comment in:
> 
> http://nxr.netbsd.org/source/xref/sys/kern/kern_verifiedexec.c#835
> 
> -e.

i don't understand the comment.  can you explain?

YAMAMOTO Takashi