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Date:	Wed, 17 Mar 2010 12:21:43 -0600
From:	Eric Blake <eblake AT redhat DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: cygwin 1.7: why there is a directory E/cygwin/dev in the tree of cygwin ?
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On 03/17/2010 02:19 AM, rolandc wrote:
> I do not understand why the postinstall script bash.sh is so complex
>=20
>     DEVDIR=3D"$(cygpath -au "C:/$(cygpath -am /dev/)" | sed 's|/c/\(.\):/=
|/\1/|')"
>     mkdir -p "$DEVDIR" || result=3D1
>=20
> it would be simple (too simple?) to
>     mkdir -p /dev || result=3D1

Yes, it would be too simple.  /dev already exists, so the mkdir would
fail to do anything useful.  We REALLY want to create the underlying
Windows directory at the same location at where /dev would be mounted,
and to do that, we really do want to know the windows location (drive
letter and all) of /.  Then, by using mkdir of that fancy windows path
that happens to live at the same place as where /dev normally resolves
to, then we can guarantee that /dev/stdin gets created as an actual
symlink in the windows heirarchy (since it does NOT resolve via the /dev
magic mount point), and that tab-completion can see any contents placed
into the windows counterpart directory.

--=20
Eric Blake   eblake AT redhat DOT com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org


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