/etc/group, /etc/passwd usage by cygwin layer ?

Corinna Vinschen corinna-cygwin@cygwin.com
Mon Jan 13 03:30:00 GMT 2003


On Thu, Jan 09, 2003 at 11:28:04AM +0100, jurgen.defurne@philips.com wrote:
> Hello,
> 
> Are the /etc/group and /etc/passwd files referenced much by cygwin while
> executing programs or doing file accesses ?

Yes, the content of both files is read into memory.  Cygwin needs the
information, especially name, u/gid and SID.

> The only thing I changed yesterday, was copying a new group file, created
> by mkgroup -d. This file is 1669895 bytes large (yes, that is 1.59 Mb), it
> contains 22080 group entries.

*gasp*

> Do you think this should be filed as a bug ?

It doesn't count as a bug but it's a well known problem since... well...
3 years or so.  It's way faster than it was back then but we still don't
have an optimal solution.

Workaround:  Don't use such big files.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.



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