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Date: Fri, 13 Aug 2010 09:59:53 -0600
From: Eric Blake <eblake AT redhat DOT com>
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Subject: Re: cygwin 1.7: why there is a directory E/cygwin/dev in the tree   of  	cygwin ?
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[reviving an old thread, relevant to today's current bash postinstall
failures]

On 03/17/2010 12:28 PM, Corinna Vinschen wrote:
> On Mar 17 12:21, Eric Blake wrote:
>> On 03/17/2010 02:19 AM, rolandc wrote:
>>> I do not understand why the postinstall script bash.sh is so complex
>>>
>>>     DEVDIR=3D"$(cygpath -au "C:/$(cygpath -am /dev/)" | sed 's|/c/\(.\)=
:/|/\1/|')"
>>>     mkdir -p "$DEVDIR" || result=3D1
>>>
>>> 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
> Nothing of this should be necessary since the 000-cygwin-post-install.sh
> script from the base-cygwin package already creates /dev.

Interesting - cygwin 1.7 is much nicer in regards to letting 'mkdir
/dev' succeed without having to go through cygpath hoops.

I'm building a new bash package now that should fix all this mess, by
using the same means as 000-cygwin-post-install.sh to populate necessary
entries into /dev.

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


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