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Re: [RFC] DT_WHT
- From: Carlos O'Donell <carlos at redhat dot com>
- To: Rical Jasan <ricaljasan at pacific dot net>, libc-alpha <libc-alpha at sourceware dot org>
- Date: Wed, 21 Feb 2018 22:52:24 -0800
- Subject: Re: [RFC] DT_WHT
- Authentication-results: sourceware.org; auth=none
- References: <firstname.lastname@example.org>
On 02/21/2018 02:16 AM, Rical Jasan wrote:
> There is one undocumented DT_* macro in manual/filesys.texi: DT_WHT. It
> is defined in dirent/dirent.h and appears to be used once in io/fts.c:
> #if defined FTS_WHITEOUT && 0
> if (dp->d_type == DT_WHT)
> p->fts_flags |= FTS_ISW;
> For an entry in the manual, I was thinking something along the lines of:
> "This macro is obsolete and has no effect. It was used to..."
> but I'm not sure what to say about what it was used for.
> Alternatively, could/should it be removed? It looks like that might
> extend beyond just DT_WHT, as FTS_WHITEOUT also appears to be a NOOP:
> $ grep -rFn FTS_WHITEOUT .
> ./io/fts.h:75:#define FTS_WHITEOUT 0x0080 /* return whiteout information */
> ./io/fts.c:628:#if defined FTS_WHITEOUT && 0
> ./io/fts.c:629: if (ISSET(FTS_WHITEOUT))
> ./io/fts.c:772:#if defined FTS_WHITEOUT && 0
> ./io/fts.c:881:#if defined FTS_WHITEOUT && 0
> Lastly, I can't find a reference to it in any of the standards I've
> managed to obtain so far (not to say that's exhaustive at all). Is this
> also BSD?
Does this help?
I think it should be entirely removed, along with the removal