[openbeos] Re: struct stat st_mode bits
- From: "François Revol" <revol@xxxxxxx>
- To: openbeos@xxxxxxxxxxxxx
- Date: Tue, 30 Nov 2004 18:56:28 +0100 CET
> "François Revol" <revol@xxxxxxx> wrote:
> > > BFS could use this internally, and although the original one
> > > doesn't,
> > > my implementation actually does. It's not really needed though,
> > > so
> > > we
> > > could think about removing it.
> > Doesn't tell me what it does...
>
> Ah, okay. I should have said if the directory/container in question
> supports duplicate entries or not. For indices this is generally
> true,
> for other types, it's not :)
gotcha.
>
> > > > Also I'd reconsider using S_FOO_INDEX in favor of S_INDEX,
> > > > since
> > > > it's not very scalable... we have only 2 bits left in that
> > > > field.
> > > I don't understand what you're trying to say here.
> > Are the different bits really needed or could we use just one to
> > say
> > S_INDEX without type distinction ?
>
> They are actually used by BFS to maintain the index type. Although it
> also duplicates this information in the B+tree header, we now also
> use
> it to report the types when calling stat() on an index.
well it's a stripped down dupped info from fs_index.h:index_info::type.
François.
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