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Date: Fri, 13 May 2016 10:19:36 +0300
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From: "Eli Zaretskii (eliz AT gnu DOT org) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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Subject: Re: Fwd: A few DJGPP libc.a bugs
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> From: "Wiktor S. (wswiktorSP AT Mpoczta DOT fm) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
> Date: Fri, 13 May 2016 00:31:27 +0200
> 
> > E.g., I'm not sure exFAT support SFN as we expect.
> 
> exFAT does not keep 8.3 names on-disk at all.

That makes sense, thanks.

> I knew this, but I always assumed that the OS would simply generate short 
> file names on the fly.

That's what happens with FAT32 and NTFS volumes, AFAIR.

> I just checked that and it appears that this is not the case.
> 
> Non-LFN-aware programs cannot access long file names on exFAT partitions *at 
> all*.
> 
> The files are not listed. Only files that fit in 8.3 scheme are accessible 
> by SFN API.

So we'd need some way of telling that the file's volume is exFAT.  Are
there any DOS calls available for that?