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Date: Tue, 4 Jul 2017 15:26:52 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: scandirat return dirents of parent dir
Message-ID: <20170704132652.GA7642@calimero.vinschen.de>
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On Jul  4 19:09, comic fans wrote:
> Hello:
>      I've found this problem when compile
> casync(https://github.com/systemd/casync.git) in cygwin,workflow to
> trigger this :
>     rootfd=3Dopen(".",O_CLOEXEC|O_RDONLY|O_NOCTTY);
>     scandirat(rootfd,".", firstLevelDirEnts......);
>     foreach dirent in firstLevelDirEnts:
>          if dirent is dir:
>              subdirfd=3Dopenat(rootfd,
>                   dirent->d_name,O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
>              scandirat(subdirfd,".",  secondLevelDirEnts......);
>=20
>      at this time, secondLevelDirEnts should be files in subdir, but
> in cygwin, secondLevelDirEnts is just same as firstLevelDirEnts.
>=20
>       This problem didn't happen in linux , nor win10 WSL,  but
> happens in both cygwin/msys2.

First I thought you stumbled over the problem that the first two entries
returned by scandirat are "." and "..", but on closer investigation I
saw the problem.

I pushed a fix to the git repo and uploaded new developer snapshots
to https://cygwin.com/snapshots/  Please try.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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