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Message-ID:	<01d101c16973$a2a655d0$0200a8c0@lifelesswks>
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-apps AT cygwin DOT com>
Cc:	<cygwin-apps AT cygwin DOT com>
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Subject:	Re: setup.exe suggestion [ptsekov AT syntrex DOT com: Re: sshd dies]
Date:	Sat, 10 Nov 2001 10:09:50 +1100
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----- Original Message -----
From: "Christopher Faylor" <cgf AT redhat DOT com>
To: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>

> Maybe we can force this by changing how the files are written?  If we
use
> the right sharing, maybe even Windows 9x will complain on overwriting
a
> file.

That might work. The current scenario to solve is:

User selects upgrade/uninstall package foo.
Setup deletes n files from foo, then finds a .dll it cannot delete.
Setup reports an error and the user is left with package foo broken.

What we need to do is check we can delete *all* files in the package in
advance. This includes .dll's, .exe's, and shared data files.

If we can find a shared mode such as you suggest, we could move all the
files 1 by 1 to file.setup.backup in the same dir (prevent cross disk
copying). And if that succeeds, then delete them all, if not rollback
the activity.

Rob

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