Subject: Re: cygserver shmat
From: bertrand marquis <[email-masked]>
To: cygwin <[email-masked]>
Date: 12 Aug 2004 14:03:15 +0200

Le jeu 12/08/2004 à 12:44, Corinna Vinschen a écrit :
> On Aug 12 12:13, bertrand marquis wrote:
> > In fact i wasn't using the SHM_RNd flag.
> > 
> > In details here is what i do:
> > 
> > - get a shared segment of with size= SIZE (SIZE multiple of SHMLBA)
> > - attach the segment without specifying address and storing the result
> > in beginaddress
> > - attach the segment again specifying the address: endposition=
> > beginaddress + SIZE
> > 
> > without SHM_RND in the second shmat i've got the error : invalid
> > argument
> > 
> > now that i specifie SHM_RND in the flag i have the error: value to large
> > for defined type ....
> > 
> > any idea ?
> 
> Nope.  Not without knowing the actual values.  An strace output of
> the affected calls would be good.  Even better, create a simple testcase
> which allows to reproduce the behaviour.  Just the minimum of necessary
> code.
> 
> 
> Corinna

Ok,

i have made a minimum program showing the problem.
You can try specifying or not SHM_RND in the second shmat, without i
have INvalid argument error and with i have value too large for defined
data type.

thanks
bertrand
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