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Subject: Re: dirent.d_type is not working on Cygwin symbolic links.
To: cygwin AT cygwin DOT com
References: <b431ce093f2949901c68c3c93fe0693c AT xs4all DOT nl>
From: Christian Franke <Christian DOT Franke AT t-online DOT de>
Message-ID: <639803f1-432c-005d-98c2-db982618c0e2@t-online.de>
Date: Sun, 29 Jan 2017 12:15:00 +0100
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waterlan wrote:
> The dirent.d_type value for Cygwin symbolic links is 0 (DT_UNKNOWN). 
> The value is 10 (DT_LNK) for Windows native symbolic links. I think 
> d_type should be 10 for Cygwin symbolic links too.
>

Sorry, no.

The actual type should only be returned in dirent.d_type if the info is 
available at very low cost. This is not the case for Cygwin symbolic links.

If DT_UNKNOWN is returned, lstat() must be called if type info is required.

Quote from Linux man page readdir(3):
"All applications must properly handle a return of DT_UNKNOWN."
(https://linux.die.net/man/3/readdir)

See also thread starting at:
https://sourceware.org/ml/cygwin-patches/2008-q4/msg00000.html

Regards,
Christian


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