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

[Kazuhiro Fujieda]

>>> On Fri, 14 Sep 2001 16:40:43 +1000
>>> "Robert Collins" <robert.collins@itdomain.com.au> 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.

> I don't see how they would no longer need thread protection.
> internal_getlogin could be updating the cache while a user thread calls
> getpwuid.

It is nonsense or impossible that a user thread calls get{p,g}w*
in set{g,u}id and uinfo_init.
____
  | AIST      Kazuhiro Fujieda <fujieda@jaist.ac.jp>
  | HOKURIKU  Center for Information Science
o_/ 1990      Japan Advanced Institute of Science and Technology