Re: shmat problem

From: Alex Riesen (fork0@users.sourceforge.net)
Date: Mon Jan 06 2003 - 11:43:32 EST


Doug McNaught, Mon, Jan 06, 2003 17:36:39 +0100:
> > You have to add SHM_REMAP to shmat flags (see definitions of SHM_ flags).
> Hmm, the manpage (on RH7.3 at least) doesn't mention SHM_REMAP. Nice
> to know about it.

RH7.3 manpage is quiet old, btw.

Linux manpages-1.54 (Dec 30 2002):

   The (Linux-specific) SHM_REMAP flag may be asserted in shmflg to indi-
   cate that the mapping of the segment should replace any existing map-
   ping in the range starting at shmaddr and continuing for the size of
   the segment. (Normally an EINVAL error would result if a mapping
   already exists in this address range.) In this case, shmaddr must not
   be NULL.

-alex
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