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Re: Proposal: check and read /etc/{passwd,group} less frequently.


On Fri, Sep 14, 2001 at 09:25:05PM +0900, Kazuhiro Fujieda wrote:
> >>> On 14 Sep 2001 16:33:05 +0900
> >>> Kazuhiro Fujieda <fujieda@jaist.ac.jp> said:
> 
> > > How often is internal_getlogin called relative to get(p|g)w*?
> > 
> > It is in set{g,u}id and uinfo_init. At the user's point of view, 
> > the cache is updated only when they execute another command.
> 
> Oops, I've told a lie. it's a nonsense that internal_getlogin
> invokes read_etc{passwd,group}. I tested it and found it
> couldn't work as I intended. 
> 
> I'd like to change the proposal. Checking and reading
> /etc/{passwd,group} should be held in uinfo_init.

What about a long running server process e.g. started from cygrunsrv?
It runs uinfo_init() just once at the beginning.  It would never get
the changes to /etc/passwd and /etc/group since it needs that info
_before_ changing the user context (which would call internal_getlogin()
directly from seteuid(), btw. -- no uinfo_init() at all).

Corinna

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


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