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Re: mmap semantics (kernel/975)

From: Tobias Oberstein (tobias.obersteingmx.de)
Date: Mon Feb 02 2004 - 07:11:26 CST

> That is, the second mmap "shall" replace the first, and thus the
> changes "shall" show up. OK. I'm puzzled what they mean by "shall";)
> Does it actually mean "must"? If not, what's the difference between
> they speaking of "shall" and "left unspecified". Puh.

i "shall" have read their intro;)

"For the purposes of IEEE Std 1003.1-2001, the following terminology
definitions apply:

...
shall

For an implementation that conforms to IEEE Std 1003.1-2001, describes
a feature or behavior that is mandatory. An application can rely on the
existence of the feature or behavior.

For an application or user, describes a behavior that is mandatory."

http://www.opengroup.org/onlinepubs/007904975/functions/xsh_chap01.html