Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
From: ericblake AT comcast DOT net (Eric Blake)
To: cygwin AT cygwin DOT com
Subject: Re: Please test 2005-Apr-12 snapshot
Date: Tue, 12 Apr 2005 23:22:00 +0000
Message-Id: <041220052322.20346.425C5818000A08C200004F7A22058891160A050E040D0C079D0A@comcast.net>

> I'd like to ask people to test the latest snapshot as of today.  It contains
> two patches, one of them with some impact on how timestamps are used.
> 
> The first patch is less important, it should just stop floppy access when
> sync is called on Win2K boxes.

Doesn't seem to be any problem with this on my Win2k box at work (I still need to test XP and 98 when I get home)

> 
> The second patch is this:
> 
> In 1.5.13 and 1.5.14 we introduced touching the CreationTime stamp in
> a way, which simulates a POSIX ctime using the CreationTime stamp.
> This resulted in some complaints, the most important one that native
> Windows applications might misbehave because of strange CreationTimes.
> 
> The snapshot now contains a patch which changes the ctime handling as
> follows:
> 
> - Windows NT supports a fourth timestamp which is inaccessible from the
>   Win32 API.  The NTFS filesystem actually implements it.  It behaves
>   as a ctime in a POSIX-like fashion.  Cygwin's st_ctime stat member now
>   contains this ChangeTime, if it's available.
> 
> - Any other file system, which doesn't support the ChangeTime stamp
>   uses the LastWriteTime stamp as ctime.  This comes relatively close
>   to the way ctime behaves in POSIX.
> 
> - The CreationTime stamp is neither read nor changed programatically by
>   Cygwin now.  This should solve the aforementioned problems for native 
>   Win32 applications.
> 
> Please download from http://www.cygwin.com/snapshots/ and test.
> 
> 

The second patch caused a regression in the coreutils test suite:

$ touch -c none
touch: setting times of `none': Permission denied
$ echo $?
1

This used to work in 1.5.14, and POSIX requires that it is a nop with exit status 0.

--
Eric Blake


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/