X-Recipient: archive-cygwin AT delorie DOT com
X-Spam-Check-By: sourceware.org
To: cygwin AT cygwin DOT com
From: MP <ajaxsupremo AT yahoo DOT com>
Subject:  Re: Trouble with cygwin git
Date: Wed, 2 Jan 2008 19:35:11 +0000 (UTC)
Lines: 50
Message-ID:  <loom.20080102T190832-291@post.gmane.org>
References:  <376007 DOT 24556 DOT qm AT web45909 DOT mail DOT sp1 DOT yahoo DOT com>
Mime-Version:  1.0
Content-Type:  text/plain; charset=us-ascii
Content-Transfer-Encoding:  7bit
User-Agent: Loom/3.14 (http://gmane.org/)
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

> I'm having the problem cloning a git repository using
> Cygwin git 1.5.3.5:
> 
> [...]
> 
> fatal: failed to unpack tree object HEAD
> 

I dug into this, and found that the failure happens here:

    res = fh->link (newpath);

in the link() function of file src/winsup/cygwin/syscalls.cc.  res is -1, and 
errno == EEXIST at this point.

In the call above, newpath is:
/cygdrive/c/git/git/.git/objects/pack/pack-
d629a7029e3a941884c4bea2b33cc27e32f55779.pack

Digging further, this line fails:

    if (CreateHardLinkA (newpc, pc, NULL))
      goto success;

in function fhandler_disk_file::link(), fhandler_disk_file.cc.  CreateHardLinkA
() returns 0, and GetLastError() returns 183 (ERROR_ALREADY_EXISTS: Cannot 
create a file when that file already exists).

In the CreateHardLinkA() call above, newpc.get_win32() yields:
c:\git\git\.git\objects\pack\pack-d629a7029e3a941884c4bea2b33cc27e32f55779.pack

pc.get_win32() yields:
c:\git\git\.git\objects\tmp_pack_btsO9s

I know that the destination file (newpc) does not exist; so I am perplexed why 
CreateHardLinkA() is failing.  In the CreateHardLink() documentation on MSDN, 
I see this comment:

"if you open a file that does not allow sharing, another application cannot 
share the file by creating a new hard link to the file"

However, I see that all calls to CreateFile() in XP Cygwin happen with:

FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE

Any ideas why CreateHardLinkA() could still be failing?


Thanks,
MP


--
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/