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Date: Thu, 15 Oct 2020 10:16:54 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: test -r or -x always return false on an NFS mount?
Message-ID: <20201015081654.GE26704@calimero.vinschen.de>
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On Oct 14 16:57, Mario Emmenlauer wrote:
> On 14.10.20 13:50, Corinna Vinschen wrote:
> > On Oct 14 11:06, Mario Emmenlauer wrote:
> >> On 14.10.20 10:28, Corinna Vinschen wrote:
> >>> Actually, not really.  It's weird in fact, given ls(1) shows the
> >>> desired result.  That would point to a bug in access(2), but there's
> >>> no special code in access(2) for NFS.  For filesystems not supporting
> >>> ACLs (FAT, NFS, etc), it calls stat(2) and checks the st_mode bits
> >>> against the requested access(2) mode based on the uid/gid of the
> >>> caller, simple as that.
> >>
> >> Hmm, now that you mention it, I just coincidentally found an issue
> >> with the `_stat` call in Microsoft Windows 2004 update. In the Apache
> > 
> > This is entirely unrelated.  We're talking about Cygwin stat(2),
> > not msvcrt.dll _stat().  Different source, different call.
> 
> Yes, but Cygwin stat is implemented based on the Win32 posix layer too,
> or not?

No, Cygwin is using the NT layer functions to access filesystems.


Corinna

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Corinna Vinschen
Cygwin Maintainer
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