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Date:	Sat, 10 May 2003 13:16:29 -0400
From:	Christopher Faylor <cgf AT redhat DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: cygipc (and PostgreSQL) XP problem resolved!
Message-ID:	<20030510171629.GB11448@redhat.com>
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On Sat, May 10, 2003 at 01:06:01PM -0400, Charles Wilson wrote:
>Corinna Vinschen wrote:
>
>>
>>Is there actually a need to convert key_t to 64 bit?
>>
>>Corinna
>>
>
>with old 32bit key_t, cygipc uses this to create a key for a given 
>filepath and id#:
>
>  key = ((st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16)
>         | ((id & 0xff) << 24));
>
>Given the sizes of the various fields of st, there are obvious problems 
>with aliasing here.

But, be advised that I'm in the process of changing the inode field to
a long long so I'm not sure that we wouldn't be just pushing this off
a little further.

cgf

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