untarring symlinks with ../ fails randomly, silghtly OT

Mon Jul 4 10:47:00 GMT 2011

On Jul 4 11:15, Wolf Geldmacher wrote:
> As an aside:
> 	I also used to have some trouble with "rm -rf" of a directory
> 	hierarchy failing more or less reproducibly (like: 80% of the
> 	time) because files were presumably still "in use". Repeating
> 	the command several times would succeed, though.
>> 	Downgrading from cygwin1.dll/1.7.9.1 to cygwin1.dll/1.7.8.1
> 	seems to have solved that issue as well - still have to see
> 	the first "retry to delete".
>> This may or may not be related to the original report, as it also reeks
> of a race condition during file/directory operations.

I can neither reproduce the tar problem, nor can I reprocude the rm
problem. I tried this under 2008R2 which is basically the same as your
W7-64 bit. I used local and remote drives to test the issue but to no
avail.
Are you sure this isn't a BLODA problem which is triggered by the
changes in 1.7.9?
I just took a look through the changes between 1.7.8 and 1.7.9, and
the list of changes which affect filesystem access is pretty small:
2011年03月14日 Corinna Vinschen <...>
 * fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Only use
 file id as inode number if it masters the isgood_inode check.
2011年03月08日 Corinna Vinschen <...>
 * fhandler.cc (fhandler_base::open): When creating a file on a
 filesystem supporting ACLs, create the file with WRITE_DAC access.
 Explain why.
 * fhandler_disk_file.cc (fhandler_disk_file::mkdir): Ditto for
 directories.
 * fhandler_socket.cc (fhandler_socket::bind): Ditto for sockets.
 * path.cc (symlink_worker): Ditto for symlinks.
 * security.cc (get_file_sd): Always call GetSecurityInfo for directories
 on XP and Server 2003. Improve comment to explain why.
So, is it possible that the request for WRITE_DAC access in the call to
NtCreateFile triggers some hiccup of your virus checker? It could easily
explain both effects.
Corinna
-- 
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple